Innovative System for Providing Hyper Efficient HVAC
20210396404 · 2021-12-23
Inventors
Cpc classification
F24F11/77
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F24F2110/10
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F24F2006/008
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F24F8/10
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Y02B30/54
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
F24F2110/30
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F24F3/1417
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F24F2110/20
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F24F5/0035
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F24F6/14
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F24F11/63
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Y02B30/70
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
International classification
F24F3/14
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F24F11/63
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F24F11/77
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Abstract
An air conditioning system configured to reduce humidity and temperature. The air conditioning system includes a closed loop desiccant system, and a closed loop cooling fluid system. The air conditioning system comprises a dehumidification system, a distillation system, and a refrigeration system. The dehumidification system reduces the temperature and humidity of the air. The distillation system separates the depleted liquid desiccant. The refrigeration system maintains liquid desiccant and cooling fluid at an inlet temperature. A flow of air is passed through the desiccant to reduce humidity. The flow of air is passed through a cooling fluid spray to reduce, temperature. The desiccant circulated to a heat collector for regeneration. The cooling fluid is recirculated to a heat collector for regeneration.
Claims
1. An air conditioning system for conditioning a stream of air using a closed loop desiccant circulation and a closed loop cooling fluid circulation, comprising: a dehumidification system defining a flow path for the stream of air, the dehumidification system comprising at least one desiccant device in the flow path and a cooling device in the flow path, wherein: the at least ono desiccant device is configured to decrease a humidity in the stream of air by absorbing water with a fresh liquid desiccant, the fresh liquid desiccant having an inlet temperature, and wherein absorption of the water by the fresh liquid desiccant forms a depleted liquid desiccant; and the at least one cooling device is configured to decrease a temperature of the stream of air by absorbing heat with a fresh cooling fluid, the fresh cooling, fluid having the inlet temperature, and wherein absorption of the heat by the fresh cooling fluid forms a depleted cooling fluid; a distillation system having an inlet, a first outlet, and a second outlet, the inlet is fluidly connected to an outlet of the at least one desiccant device, wherein the distillation system is configured to separate the water from the depleted liquid desiccant; and a refrigeration system having a first inlet fluidly connected to the first outlet of the distillation system, a second inlet fluidly connected to the second outlet of the distillation system, a third inlet fluidly connected to an outlet of the at least one cooling device, a first outlet fluidly connected to an inlet of the at least one desiccant device, and a second outlet fluidly connected to an inlet of the at least one cooling device, wherein the refrigeration system is configured to: cool the depleted liquid desiccant to about the inlet temperature of the fresh liquid desiccant to reform the fresh liquid desiccant; combine and cool the water and the depleted cooling fluid to about the inlet temperature to reform the fresh cooling fluid; and circulate the fresh cooling fluid and the fresh liquid desiccant to the at least one cooling device and the at least one desiccant device.
2. The dehumidification system of claim 1 wherein: each of the at least one desiccant device comprises: an inert medium configured to increase a contact area between the fresh liquid desiccant and the stream of air; a control valve fluidly connected between the first outlet of the refrigeration system and each inlet of the at least one desiccant device, wherein the control valve is configured to adjust a flow rate of the fresh liquid desiccant; a spraying head fluidly connected to each inlet of the at least one desiccant device, wherein the spraying head is configured to spray the fresh liquid desiccant into the at least one desiccant device; and a collector fluidly connected to each outlet of the at least one desiccant device, wherein the collector is configured to collect the depleted liquid desiccant; each of the at least one cooling device comprises: an inert medium configured to increase a contact area between the fresh cooling fluid and the stream of air; a control valve fluidly connected between the second outlet of the refrigeration system and each inlet of the at least one cooling device, wherein the control valve is configured to adjust a flow rate of the fresh cooling fluid; a spraying head fluidly connected to each inlet of the at least one cooling device, wherein the spraying head is configured to spray the fresh cooling fluid into the at least one desiccant device; and a collector fluidly connected to each outlet of the at least one cooling device, wherein the collector is configured to collect the depleted cooling fluid.
3. The distillation system of claim 2, further Comprising a heat exchanger and a separator positioned in series, wherein the heat exchanger is configured to heat the depleted liquid desiccant, and wherein the separator is configured to separate the water from the depleted liquid desiccant.
4. The distillation system of claim 3, further comprising a first cooler fluidly connected to a first outlet of the separator and a second cooler fluidly connected to a second outlet of the separator, wherein the first and second coolers are configured to cool the water and the depleted liquid desiccant to the inlet temperature.
5. The refrigeration system of claim 3, further comprising a refrigerator fluidly connected to the heat exchanger, a fluid reservoir thermally connected to the refrigerator, a desiccant reservoir thermally connected to the refrigerator, a fluid pump fluidly connected between the fluid reservoir and the at least one cooling device, a desiccant pump connected between the desiccant reservoir and the at least one desiccant device, and a plurality of control valves, wherein: fluid flow through each inlet and outlet of the refrigerator, the desiccant reservoir, and the fluid reservoir is controlled by a respective control valve of the plurality of control valves; the refrigerator is configured to absorb heat from the fluid reservoir and desiccant reservoir with a working fluid circulating between the heat exchanger and the refrigerator, the working fluid transferring the absorbed heat to the depleted liquid desiccant; the fluid reservoir is configured to combine and cool the water and the depleted cooling fluid to the inlet temperature to reform the fresh cooling fluid; the desiccant reservoir is configured to cool the depleted liquid desiccant to the inlet temperature of the fresh liquid desiccant to reform the fresh liquid desiccant; and the fluid and desiccant pumps are configured to transfer the fresh cooling fluid to the at least one cooling device and the fresh liquid desiccant to the at least one desiccant device.
6. The dehumidification system of claim 5, further comprising a filter positioned at an inlet of the flow path and a fan positioned downstream from the filter, wherein the filter is configured to remove particles from the stream of air; and wherein the fan is configured to drive the stream of air through the dehumidification system.
7. The dehumidification system of claim 6, further comprising a plurality of air flow sensors positioned in series along a length of the flow path, wherein the plurality of air flow sensors are configured to measure temperature and humidity of the stream of air along the flow path.
8. The dehumidification system of claim 7, wherein: each of the at least one desiccant device consists of a first desiccant device and a second desiccant device; and wherein the at least one cooling device, the first desiccant device, and the second desiccant device are positioned in series, with the at least one cooling device positioned between the first and second desiccant devices; and the plurality of air flow sensors consists of: a first air flow sensor positioned between the filter and the fan, a second air flow sensor positioned between the fan and the first desiccant device, a third air flow sensor positioned between the first desiccant device and the at least one cooling device, a fourth air flow sensor positioned between the at least one cooling device and the second desiccant device, and a fifth air flow sensor positioned downstream from the second desiccant device.
9. The air conditioning system of claim 8, further comprising a computing platform, wherein: the dehumidification system comprises a microprocessor communicatively coupled to the plurality of air flow sensors, each of the control valves, and the fan; wherein the refrigeration system comprises a microprocessor communicatively coupled to each of the control valves and each of the pumps; and wherein the distillation system comprises a microprocessor communicatively coupled to each of the control valves, the heat exchanger, the separator, and each of the pumps; and the microprocessor of the dehumidification system is configured to adjust a flow rate of the fresh liquid desiccant and the fresh cooling fluid, and adjust a speed of the fan; wherein the microprocessor of the refrigeration system is configured to adjust a flow rate of: the working fluid, the water and the depleted liquid desiccant, and the fresh liquid desiccant and the fresh cooling fluid; and wherein the microprocessor of the distillation system is configured to adjust a flow rate of: the working fluid, the depleted liquid desiccant, and the water and the depleted liquid desiccant; and the computing platform is in communication with each of the microprocessors, and wherein the computing platform is configured to adjust operations of at least one of: the dehumidification system, the refrigeration system, and the distillation system, based on the measured temperature or humidity of any of the plurality of air flow sensors.
10. The distillation system of claim 1, further comprising an air heat exchanger having a first inlet, a first outlet, a second inlet, and a second outlet; wherein the air heat exchanger is fluidly connected to an inlet of the flow path, and wherein the air heat exchanger is configured to cool the stream of air flowing through the first inlet and outlet by recycling the stream of air exiting the flow path through the second inlet and outlet.
11. The air conditioning system of claim 1, wherein the inlet temperature of the fresh liquid desiccant is between about 35° F. and about 60° F., wherein the inlet temperature of the fresh cooling fluid is between about 35° F. and about 60° F., and wherein the fresh cooling fluid comprises water, and wherein the fresh liquid desiccant comprises an ionized salt.
12. The distillation system of claim 4, wherein: the first cooler has a first inlet, a first outlet, a second inlet, and a second outlet, and wherein the first cooler is configured to cool the water flowing through a first inlet and outlet by recycling the stream of air exiting the flow path through a second inlet and outlet; and the second cooler has a first inlet, a first outlet, a second inlet, and a second outlet, and wherein the second cooler is configured to cool the depleted liquid desiccant by recycling the stream of air exiting the flow path through a second inlet and outlet.
13. A method for air conditioning using a dosed loop desiccant circulation and a closed loop cooling fluid circulation, comprising the steps of: circulating a fresh liquid desiccant and a fresh cooling fluid through a dehumidification system, wherein the fresh liquid desiccant and the fresh cooling fluid flow into the dehumidification system at an inlet temperature; flowing ambient air having an initial humidity and an initial temperature through the fresh liquid desiccant and the fresh cooling fluid; reducing the humidity of the ambient air with the fresh liquid desiccant, thereby forming a depleted liquid desiccant; reducing the temperature of the ambient air with the fresh cooling fluid, thereby forming a depleted cooling fluid; separating water from the depleted liquid desiccant combining the water and the depleted cooling fluid; cooling the combined water and depleted cooling fluid to about the inlet temperature, thereby reforming the fresh cooling fluid; cooling the depleted liquid desiccant to about the inlet temperature, thereby reforming the fresh liquid desiccant; and circulating the fresh liquid desiccant and the fresh cooling fluid to the dehumidification system.
14. The method of claim 13, wherein the step of separating the depleted liquid desiccant includes circulating the depleted liquid desiccant through a distillation system having a heat exchanger and a separator, wherein the heat exchanger heats the depleted liquid desiccant, and wherein the separator separates water from the depleted liquid desiccant.
15. The method of claim 14, further comprising after the step of circulating the depleted liquid desiccant through the distillation system, circulating the water, the depleted liquid desiccant, and the depleted cooling fluid into a refrigeration system, wherein: the step of separating the depleted liquid desiccant includes heating the depleted liquid desiccant with a working fluid circulating between the distillation system and the refrigeration system; the step of cooling the water and the depleted cooling fluid includes absorbing heat from the water and the depleted cooling fluid with the working fluid; and the step of cooling the depleted liquid desiccant includes absorbing heat from the depleted liquid desiccant with the working fluid.
16. The method of claim 13, wherein the step of circulating a fresh liquid desiccant and a fresh cooling fluid through the dehumidification system includes circulating the fresh liquid desiccant through a first and second desiccant device, and circulating the fresh cooling fluid through a cooling device.
17. The method of claim 16, wherein: the step of flowing ambient air includes measuring the humidity and temperature of the ambient air with a plurality of air flow sensors positioned along a length of the dehumidification system; and the step of circulating the fresh liquid desiccant and the fresh cooling fluid includes adjusting a flow rate of the fresh liquid desiccant and the fresh cooling fluid when at least one of the measured temperature and humidity from any of the plurality of air flow sensors is not within a threshold amount.
18. The method of claim 17, further comprising recycling a portion of ambient air exiting the dehumidification system to a refrigeration system to cool at least one of the water and the depleted liquid desiccant.
19. The method of claim 13, wherein the inlet temperature of the fresh liquid desiccant is between about 35° F. and about 60° F., wherein further the inlet temperature of the fresh cooling fluid is between about 35° F. and about 60° F., wherein further the fresh cooling fluid comprises water, and wherein the fresh liquid desiccant comprises an ionized salt.
20. The method of claim 13, further comprising recycling a portion of ambient air exiting the dehumidification system to a heat exchanger fluidly coupled to the inlet of the dehumidification system to cool the ambient air flowing into the dehumidification system.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] For a fuller understanding of the advantages provided by the disclosure, reference should be made to the following detailed description together with the accompanying drawing wherein:
[0010]
[0011]
[0012]
[0013]
[0014]
[0015]
[0016]
[0017]
[0018]
[0019]
DETAILED DESCRIPTION
[0020] Referring to
[0021] As the flows of liquid desiccant 118A, 118B (collectively 118) and cooling fluid 116 exit the dehumidification system 102, each stream 116, 118 has become depleted because the liquid desiccant 118 has become water saturated and the cooling fluid 116 temperature has either increased or decreased. The distillation system 104 is configured to separate the flow of depleted liquid desiccant 118 into a water portion 122 and desiccant portion 120. In one embodiment, the distillation system 104 utilizes a heat source to separate the depleted liquid desiccant 118 into substantially pure or completely pure streams of liquid desiccant 120 and water 122. Substantially pure may be understood to be at least 70 percent pure.
[0022] With continued reference to
[0023] Referring to
[0024] In one embodiment, the dehumidification system 200A may comprise a first desiccant device 202, and a cooling device 204. Optionally, a second desiccant device 206 may be implemented, wherein the first desiccant device 202, the cooling device 204, and the second desiccant device 206 are positioned in series. Depending on the demands of the conditioned space, the dehumidification system 200A may have more desiccant and cooling devices. In one embodiment, the flow of air 268 passes through the first desiccant device 202 first, the cooling device 204 second, and the second desiccant device 206 third, before exiting into a conditioned space. A fresh liquid desiccant 226 flows through the first desiccant device 202 and the second desiccant device 206 at an inlet temperature. The liquid desiccant is fresh when the water content is below fifty percent. As the flow of air 268 flows through the first desiccant device 202 and the second desiccant device 206, the fresh liquid desiccant 226 absorbs the water particles in the flow of air 268, thereby reducing the humidity of the flow of air 268. Once the fresh liquid desiccant 226 flows through the first desiccant device 202 and the second desiccant device 206 and absorbs the water particles, the fresh liquid desiccant 226 becomes a depleted liquid desiccant 230A, 230B because the depleted liquid desiccant 230A, 230B is water saturated. The liquid desiccant is depleted when the water content is greater than fifty percent. Additionally, the process of dehumidifying, the flow of air 268 may increase the temperature of the flow of air 268. The depleted liquid desiccant 230A, 230B exits the desiccant units 202, 206 and flows into a desiccant reservoir 210. In some embodiments, the dehumidification system 200A may utilize multiple desiccant reservoirs to capture the depleted liquid desiccant 230A, 230B. The collected depleted liquid desiccant 234 may be transferred to a distillation system 2008 via a pump 256.
[0025] With continued reference to
[0026] The dehumidification unit 208 may be configured to include a filter 264 at the inlet of the dehumidifier 208. Additionally, a fan 266 may be implemented at the inlet of the dehumidifier 208. The filter 264 may be employed to remove particles from the incoming flow of air 268. The filter 264 may be any type of material used to filter air, such as, for example, an activated carbon filter or any other material known in the art. The fan 266 may be configured to drive the flow of air 268 through the dehumidification unit 208 and into the conditioned space. In some embodiments, the dehumidification unit 208 may include multiple fans to drive the flow of air 268, depending on the demand requirements for the conditioned space. Additionally, the dehumidification unit 208 may include multiple filters along the dehumidification unit 208.
[0027] The first desiccant device 202 may be configured to include a first inert medium 250A, a first control valve 262A at the inlet, a first spraying head 252A between the first inert medium 250A and the first control valve 262A, and a first collector 254A at the end of the first inert medium 250A opposite the first spraying head 252A. The cooling device 204 may be configured to comprise a second inert medium 250B, a second control valve 262B at the inlet, a second spraying head 252B between the second inert medium 250B and the second control valve 262B, and a second collector 254B at the end of the second inert medium 250B opposite the second spraying head 252B. The second desiccant device 206 may also be configured to comprise a third inert medium 250C, a third control valve 262C at the inlet, a third spraying head 252C between the third inert medium 250 and the third control valve 262C, and a third collector 254C at the end of the third inert medium 250C opposite the third spraying head 252C. The inert mediums may comprise a housing packed with high surface area objects. The high surface area objects increase contact between the flow of air 268 and the fresh liquid desiccant 226 and the fresh cooling fluid 228 as the flow of air 268 passes through the dehumidification unit 208, which increases the amount of water the fresh liquid desiccant 226 absorbs.
[0028] With continued reference to
[0029] Referring to
[0030] Referring to
[0031] With continued reference to
[0032] In an alternative embodiment, as shown in
[0033] The refrigeration system 200D may also be configured to utilize a pump 257 to drive the depleted cooling fluid 232 into the fluid reservoir 224 and a pump 258 to drive the fresh cooling fluid 228 from the fluid reservoir 224 to the cooling device 204. The refrigeration system 200D may be configured with control valves to regulate the flow of fluids within the refrigeration system 200D. In one example, control valves 261A, 261B may be positioned at the inlet and outlet of the refrigerator. Additionally, control valves 261B, 261C may be positioned at the inlet and outlet of the second desiccant reservoir 222. Additionally, control valves 261D, 261E, 261F may be positioned at the inlets and outlet of the fluid reservoir 224. Additionally, a control valve 263 may be positioned at the inlet of the heat exchanger 272.
[0034] The air conditioning system may be configured to recycle a portion of the conditioned air to assist in the cooling of various processes in the air conditioning system. In one embodiment, as shown in
[0035] In another embodiment, as shown in
[0036] The air conditioning system 100 is configured to handle any combination of 100% outdoor air and 0% indoor air all the way to 0% outdoor air and 100% indoor air. The air conditioning system 100 is also configured to effectively filter air because the air directly may interact with an ionized salt spray in the form of a liquid desiccant spray. Pathogens or allergens that are captured will be boiled repeatedly without a way to escape. An optional add on to the air conditioning system 100 is an ultraviolet light C wave. These addons increase the filtration and killing of particulates in the air up to 99.997%.
[0037] In some embodiments, the air conditioning system 100 is configured without compressors or toxic refrigerants. The mass flow rate and therefore thermal flow rate of both the water and liquid desiccant are significantly less than the total mass of their respective reservoirs. This allows the combination of mixing of liquids and the heat removed by the refrigeration system to keep the entire system from heating up over time. By having these three systems working in concert, this design will work in any environment and without the need for an outside water source. However, a makeup water line could be included for the circumstances when the output desired humidity is higher than the input.
[0038] Referring to
[0039] The dehumidification system 302 includes a computing device 310A, air flow sensors 312A, control valves 314A, heat exchangers 316A, pumps 318A, and fans 320. The computing device 310A may include a user device (e.g., a laptop computer, a desktop computer, etc.), a computing device, a server, a group of servers, and/or the like. The distillation system includes a computing device 310C, control valves 314C, heat exchangers 316C, pumps 318C, a separator 328, and cooling devices 330. The refrigeration system includes a computing device 310B, control valves 314B, pumps 318B, heat exchangers 316B, refrigerator 322, desiccant reservoir 324, and a cooling fluid reservoir 326.
[0040] In some embodiments, the computing devices 310A, 310B, 310C may be implemented in a cloud environment. For example, computing devices 310A, 310B, 310C may be implemented by one or more computer devices of a cloud computing environment or a data center.
[0041] The computing platform 308 includes one or more devices capable of receiving, generating, storing, processing, and/or providing information associated with determining compliance of products with regulations. For example, the computing platform 308 may include a server, a group of servers, and/or the like. In some embodiments, the computing platform 308 may be partially or entirely implemented in cloud computing environment.
[0042] A cloud computing environment includes an environment that delivers computing as a service, whereby shared resources, services, etc. may be provided to the computing devices 310A, 310B, 310C and/or computing platform 308. A cloud computing environment may provide computation, software, data access, storage, and/or other services that do not require end-user knowledge of a physical location and configuration of a system and/or a device that delivers the services.
[0043] The number and arrangement of devices and networks shown in
[0044] Referring to
[0045] Bus 410 includes a component that permits communication among the components of the device 400. Processor 420 is implemented in hardware, firmware, or a combination of hardware and software. The processor 420 is a central processing unit (CPU), a graphics processing unit (GPU), an accelerated processing unit (APU), a microprocessor, a microcontroller, a digital signal processor (DSP), a field-programmable gate array (FPGA), an application-specific integrated circuit (ASIC), or another type of processing component. In some embodiments, the processor 420 includes one or more processors capable of being programmed to perform a function. Memory 430 includes a random access memory (RAM), a read only memory (ROM), and/or another type of dynamic or static storage device (e.g., a flash memory, a magnetic memory, and/or an optical memory) that stores information and/or instructions for use by processor 420.
[0046] Storage component 440 stores information and/or software related to the operation and use of device 400. For example, storage component 440 may include a hard disk (e.g., a magnetic disk, an optical disk, a magneto-optic disk, and/or a solid state disk), a compact disc (CD), a digital versatile disc (DVD), a floppy disk, a cartridge, a magnetic tape, and/or another type of non-transitory computer-readable medium, along with a corresponding drive.
[0047] Input component 450 includes a component that permits the device 400 to receive information, such as via user input (e.g., a touch screen display, a keyboard, a keypad, a mouse, a button, a switch, and/or a microphone). Additionally, or alternatively, input component 450 may include a sensor for sensing information (e.g., a global positioning system (GPS) component, an accelerometer, a gyroscope, and/or an actuator). Output component 460 includes a component that provides output information from device 400 (e.g., a display, a speaker, and/or one or more light-emitting diodes (LEDs)).
[0048] Communication interface 470 includes a transceiver-like component (e.g., a transceiver and/or a separate receiver and transmitter) that enables device 400 to communicate with other devices, such as via a wired connection, a wireless connection, or a combination of wired and wireless connections. Communication interface 470 may permit device 400 to receive information from another device and/or provide information to another device. For example, communication interface 470 may include an Ethernet interface, an optical interface, a coaxial interface, an infrared interface, a radio frequency (RF) interface, a universal serial bus (USB) interface, a Wi-Fi interface, a cellular network interface, or the like.
[0049] Device 400 may perform one or more processes described herein. Device 400 may perform these processes based on the processor 420 executing software instructions stored by a non-transitory computer-readable medium, such as memory 430 and/or storage component 440. A computer-readable medium is defined herein as a non transitory memory device. A memory device includes memory space within a single physical storage device or memory space spread across multiple physical storage devices.
[0050] Software instructions may he read into memory 430 and/or storage component 440 from another computer-readable medium or from another device via communication interface 470. When executed, software instructions stored in memory 430 and/or storage component 440 may cause processor 420 to perform one or more processes described herein. Additionally, or alternatively, hardwired circuitry may be used in place of or in combination with software instructions to perform one or more processes described herein. Thus, implementations described herein are not limited to any specific combination of hardware circuitry and software.
[0051] The number and arrangement of components shown in
[0052] Referring to
[0053] As shown in
[0054] The process 500 further includes flowing 506 the depleted liquid desiccant into a distillation system, wherein the depleted liquid desiccant is separated 508 into water and liquid desiccant. The water, the liquid desiccant, and the depleted cooling fluid are flowed 510 into a refrigeration system. The refrigeration system cools the liquid desiccant to the inlet temperature, thereby reforming 512 the fresh liquid desiccant for circulating 514 into the dehumidification system. The refrigeration system combines the depleted cooling fluid and the water into a combined depleted cooling fluid. The refrigeration system cools the combined depleted cooling fluid to the inlet temperature, thereby reforming 512 the fresh cooling fluid for circulating 514 into the dehumidification system.
[0055] In at least one embodiment, the dehumidification system comprises a first desiccant device, a cooling device, and a second desiccant device. The first desiccant device, the cooling device, and the second desiccant device are positioned in parallel in the dehumidification system. The fresh liquid desiccant flows through the first and second desiccant devices, and the fresh cooling fluid flows through the cooling device. The flow of ambient air passes through the first desiccant device, the cooling device, and the second desiccant device. The fresh liquid desiccant flowing through the first and second desiccant devices absorbs water from the ambient air and reduces the humidity of the ambient air, thereby converting the fresh liquid desiccant into a depleted liquid desiccant. The fresh cooling fluid flowing through the cooling device absorbs heat from the ambient air and reduces the temperature of the ambient air, thereby converting the fresh cooling fluid into a depleted cooling fluid.
[0056] In another embodiment, the distillation system comprises a heat exchanger and a separator, the heat exchanger and the separator are in fluid communication. The heat exchanger heats the depleted liquid desiccant, thereby creating a multi-phase fluid comprising a liquid desiccant portion and a water portion. The separator separates the multi-phase fluid into the water and the liquid desiccant.
[0057] In another embodiment, the process includes circulating a working fluid through the refrigeration system and the heat exchanger. The refrigeration system comprises a refrigerator fluidly connected to the heat exchanger, a desiccant reservoir thermally connected to the refrigerator, and a fluid reservoir thermally connected to the refrigerator. The liquid desiccant flows into the desiccant reservoir, and the depleted cooling fluid and the water are combined in the fluid reservoir. The working fluid circulates through the refrigerator and the heat exchanger. The working fluid absorbs heat from the liquid desiccant and the combined depleted cooling fluid while circulating through the refrigerator. The working fluid transfers the absorbed heat to the depleted liquid desiccant while circulating through the heat exchanger.
[0058] In another embodiment, the process includes the dehumidification system having a plurality of air flow sensors positioned in series along a length of the dehumidification system. The plurality of air flow sensors are configured to measure temperature and humidity of the stream of air at the various positions in the dehumidification system. The dehumidification system further comprises a plurality of control valves fluidly connected to inlets and outlets of the first desiccant device, the cooling device, and the second desiccant device.
[0059] In another embodiment, the process includes adjusting a flow rate of the fresh liquid desiccant entering the first and second desiccant devices. The process further includes adjusting a flow rate of the fresh cooling fluid entering the cooling device. The adjustment is based on the measured temperature and humidity of any of the plurality of air flow sensors being within a threshold temperature and threshold humidity. For example, each air flow sensor may be assigned a threshold temperature and humidity. If the temperature or humidity exceeds the maximum of the threshold of one or more air flow sensors, the flow rates of the fresh liquid desiccant and fresh cooling fluid may be increased. Additionally, or alternatively, the temperature of the fresh liquid desiccant and fresh cooling fluid may be decreased. If the temperature or humidity exceeds the minimum of the threshold, the flow rates of the fresh liquid desiccant and fresh cooling fluid may be decreased. Additionally, or alternatively, the temperature of the fresh liquid desiccant and fresh cooling fluid may be increased.
[0060] In another embodiment, the inlet temperature of the fresh liquid desiccant and the fresh cooling fluid is between about 35° F. and about 60° F.
[0061] In another embodiment, the distillation system comprises an Air heat exchanger fluidly connected to an inlet of the dehumidification system. The air heat exchanger has a first inlet, a first outlet, a second inlet, and a second outlet. The stream of air flows through the first inlet and outlet before flowing through the dehumidification system. The portion of the stream of air exiting the dehumidification system is recycled through the second inlet and outlet, thereby cooling the stream of air flowing through the first inlet and outlet.
[0062] While various embodiments in accordance with the principles disclosed herein have been described above, it should be understood that they have been presented by way of example only and not limitation. Thus, this disclosure's breadth and scope should not be limited by any of the above-described exemplary embodiments but should be defined only in accordance with any claims and their equivalents issuing from this disclosure. Furthermore, the above advantages and features are provided in described embodiments but shall not limit the application of such issued claims to processes and structures accomplishing any or all of the above advantages.
[0063] Additionally, the section headings herein are provided for consistency with the suggestions under 37 C.F.R. 1.77 or otherwise to provide organizational cues. These headings shall not limit or characterize the invention(s) set out in any claims that may issue from this disclosure. Specifically, and by way of example, although the headings refer to a “Technical Field,” the claims should not be limited by the language chosen under this heading to describe the so-called field. Further, a description of a technology as background information is not to be construed as an admission that certain technology is prior art to any embodiment(s) in this disclosure. Neither is the “Brief Summary” to be considered as a characterization of the embodiment(s) set forth in issued claims. Furthermore, any reference in this disclosure to “invention” in the singular should not be used to argue that there is only a single point of novelty in this disclosure. Multiple embodiments may be set forth according to the limitations of the multiple claims issuing from this disclosure, and such claims accordingly define the embodiment(s), and their equivalents, that are protected thereby. In all instances, the scope of such claims shall be considered on their own merits in light of this disclosure but should not be constrained by the headings set forth herein.