A liquid desiccant system including a high desorber, a low desorber, and an absorber that are in fluid communication with a working solution, where the high desorber provides rejected water vapor from the working fluid for condensation in a condenser of the low desorber that provides heat for rejection of additional water from the working solution in the low desorber effectively multiplying the heat provided for desorption. The low desorber provided the concentrated working solution to the absorber where water from ambient air is condensed into the concentrated working solution to provide a dilute working solution within a working solution conduit of the absorber that is thermally coupled to an internal cooler of the absorber. In some embodiments, the working solution can be an aqueous solution of at least one ionic liquid.

A heat exchanger includes: a first heat transfer tube unit including first heat transfer tubes arranged in parallel along a first direction within a horizontal plane; and a second heat transfer tube unit including second heat transfer tubes arranged in parallel with one another along a second direction that intersects the first direction within the horizontal plane. Each of the first heat transfer tubes and the second heat transfer tubes includes: straight portions arranged in parallel in a vertical direction; and one or more curved portions that make end portions of the straight portions communicate with each other. The straight portions of the first heat transfer tube unit and the straight portions of the first heat transfer tube unit are stacked on each other alternately.

An absorber unit 1a includes a first absorber 13a and a second absorber 13b. The first absorber 13a includes a first heat transfer tube group 11a and a first dripper 12a. The second absorber 13b includes a second heat transfer tube group 11b and a second dripper 12b. The first heat transfer tube group 11a has a first end portion 11m, and the second heat transfer tube group 11b has a second end portion 11n. In the first end portion 11m and the second end portion 11n, a shortest distance D1 is larger than a shortest distance D2. The shortest distance D1 is a shortest distance, in a gravity direction, between the outer surfaces of a specific pair of heat transfer tubes 10 adjacent to each other in the first end portion 11m. The shortest distance D2 is a shortest distance, in the gravity direction, between the outer surfaces of a pair of heat transfer tubes 10 in the second end portion 11n that form rows corresponding to the specific pair of heat transfer tubes 10.

The invention relates to a method for operating a sorption system (1), the sorption system comprising the following: a cooling fluid circuit (8), which has a cooling fluid; a process medium circuit (6), which has a refrigerant and a solvent; an absorber (3), which is connected to the cooling fluid circuit (8) and to the process medium circuit (6); a condenser (5), which is connected to the cooling fluid circuit (8) and to the process medium circuit (6); and a control device. During operation of the sorption system (1), the cooling fluid is fed to the absorber (3) and to the condenser (5), and a feed of the cooling fluid to the absorber (3) and a feed of the cooling fluid to the condenser (5) are controlled differently from each other by means of the control device. The invention further relates to an arrangement for a sorption system (1) and to a sorpotion system (1).

The application pertains to, for example, novel processes and systems for heat transfer, refrigeration, energy storage, and various cooling and heating processes. Such processes may include cooling or mixing various liquid-liquid phase transition liquids to release and/or energy. Additionally or alternatively, such processes may include charging and/or discharging thermal storage reservoirs with layered liquids of various temperatures.

The application pertains to, for example, novel processes and systems for heat transfer, refrigeration, energy storage, and various cooling and heating processes. Such processes may include cooling or mixing various liquid-liquid phase transition liquids to release and/or energy. Additionally or alternatively, such processes may include charging and/or discharging thermal storage reservoirs with layered liquids of various temperatures.

A cooling system including a first cooling apparatus thermally exposed to a space to be cooled. The cooling system further includes a second cooling apparatus thermally exposed to the space to be cooled and thermally exposed to the first cooling apparatus. Heat discharged from the second cooling apparatus powers the first cooling apparatus.

Systems and methods are provided for data center cooling by vaporizing fuel using data center waste heat. The systems include, for instance, an electricity-generating assembly, a liquid fuel storage, and a heat transfer system. The electricity-generating assembly generates electricity from a fuel vapor for supply to the data center. The liquid fuel storage is coupled to supply the fuel vapor, and the heat transfer system is associated with the data center and the liquid fuel storage. In an operational mode, the heat transfer system transfers the data center waste heat to the liquid fuel storage to facilitate vaporization of liquid fuel to produce the fuel vapor for supply to the electricity-generating assembly. The system may be implemented with the liquid fuel storage and heat transfer system being the primary fuel vapor source, or a back-up fuel vapor source.

Systems and methods are provided for data center cooling by vaporizing fuel using data center waste heat. The systems include, for instance, an electricity-generating assembly, a liquid fuel storage, and a heat transfer system. The electricity-generating assembly generates electricity from a fuel vapor for supply to the data center. The liquid fuel storage is coupled to supply the fuel vapor, and the heat transfer system is associated with the data center and the liquid fuel storage. In an operational mode, the heat transfer system transfers the data center waste heat to the liquid fuel storage to facilitate vaporization of liquid fuel to produce the fuel vapor for supply to the electricity-generating assembly. The system may be implemented with the liquid fuel storage and heat transfer system being the primary fuel vapor source, or a back-up fuel vapor source.

The present invention relates to sorbants such as metal-organic frameworks (MOFs), covalent organic frameworks (COFs), porous aromatic frameworks (PAFs) or porous polymer networks (PPNs) for separations of gases or liquids, gas storage, cooling, and heating applications, including, but not limited to, adsorption chillers.