The invention relates to a device (1) for transferring heat from a gaseous working medium (M2) to a heat-exchanger medium (M3) by compressing the gaseous working medium (M2), wherein the device (1) comprises: an operating line (AL), wherein the volume (V) enclosed by the operating line (AL) is divided into at least two sections, namely a first (AL-V1) and a second section (AL-V2), wherein the first section (AL-V1) is set up to hold a pressure-transfer medium (M1) and the second section (AL-V2) is set up to hold and discharge the gaseous working medium (M2), wherein at least one inlet and outlet valve (2) is provided for holding and discharging the gaseous working medium (M2), wherein a first volume delimited by the first section (AL-V1) is separated from a second volume delimited by the second section (AL-V2) by a first separating layer (T12) that can be displaced within the operating line (AL), wherein the first separating layer (T12) is arranged in such a way that pressure differences between the first (AL-V1) and second sections (AL-V2) of the operating line (AL) are equalized by a displacement of the first separating layer (T12) in the operating line (AL) and an accompanying change in the proportion between the first volume and the second volume is equalized, and comprising a heat-exchanger line (WL) to hold the heat-exchanger medium (M3), wherein the heat-exchanger line (WL) is coupled to the first section (AL-V1) of the operating line (AL) to bring about pressure equalization.

Provided is an integrated radiator assembly, and belongs to the field of vehicles. The integrated radiator assembly includes: multiple groups of refrigerant flat tubes, wherein multiple refrigerant flow channels are disposed in each group of the refrigerant flat tubes; a refrigerant collection tube, disposed at two ends of the multiple groups of refrigerant flat tubes and in communication with each of the refrigerant flow channels; multiple groups of cooling liquid flat tubes, wherein each of the refrigerant flat tubes is externally sleeved with each of the cooling liquid flat tubes, and multiple cooling liquid flow channels are formed between an outer surface of the cooling liquid flat tube and an outer surface of the refrigerant flat tube; and a cooling liquid collection tube, disposed at two ends of the multiple groups of cooling liquid flat tubes and in communication with each of the cooling liquid flow channels, wherein the cooling liquid collection tube is separated from the refrigerant collection tube, so that a refrigerant circulates in the refrigerant flat tubes and the refrigerant collection tube, and cooling liquid flows in the cooling liquid flat tubes and the cooling liquid collection tube. The integrated radiator assembly is capable of meeting heating use requirements of a heat pump system without air supplement and enthalpy increase.

An annular heat exchanger comprising at least two circumferentially enclosed tube profiles (1, 2) arranged inside each other for media flow and having a thermal conductive structure (3) arranged inside. The thermal conductive structure (3) comprises a helically tightly wound pair of bands (4, 5) lying on each other, the first band (4) being smooth, the other band (5) being corrugated transversally to the winding direction to create flow channels (6).

The present invention relates to the field of printed circuit heat exchangers, and in particular, to a modular square-circular composite channel printed circuit heat exchanger. The modular square-circular composite channel printed circuit heat exchanger comprises a shell, wherein the shell is divided into an inlet diverter section, a first parallel heat exchange section, a core heat exchange section, a second parallel heat exchange section, and an outlet combiner section from left to right, a plurality of square fin channels and circular micro-channels are uniformly arranged in the shell along a length direction of the shell. According to the present invention, a ratio of an average thermal resistance of a hot side to an average thermal resistance of a cold side is close to 1, which ensures the heat exchange efficiency while taking into the account structure safety and prevents the local over-temperature.

A fluid heating system for heating a production fluid using a thermal transfer fluid, the production fluid being contained in a vessel includes an electric blower configured to receive ambient air and electrical input power and to provide output source air, a combustion system configured to receive the source air from the electric blower and to receive fuel and to provide the thermal transfer fluid, a heat exchanger configured to receive the thermal transfer fluid from the combustion system and configured to provide heat exchange from the thermal transfer fluid to the production fluid, and to provide output exhaust gas, and wherein the electric fan provides a predetermined volume flow rate of the output source air at a predetermined blower efficiency such that the fluid heating system has a Bulk Heat Flux of at least about 14.7 kBTU/Hr/ft.sup.2 and a Pressure Drop of at least about 0.7 psi.

The present invention relates generally to an apparatus and method of rapidly and efficiently cooling a liquid, wherein flow is induced via gravitational feed from a reservoir, through a cooling chamber, further in connection to a refrigerant source wherein said liquid exits through an inferior actuatable outlet and said refrigerant is released through an exit valve. Specifically, the present invention allows for the rapid cooling of an alcoholic liquid through contactless exposure a carbon dioxide refrigerant source whereby said liquid and refrigerant occupy separate, non-communicating chambers.

Disclosed is a technology based upon the nesting of tubes to provide chemical reactors or chemical reactors with built in heat exchanger. As a chemical reactor, the technology provides the ability to manage the temperature within a process flow for improved performance, control the location of reactions for corrosion control, or implement multiple process steps within the same piece of equipment. As a chemical reactor with built in heat exchanger, the technology can provide large surface areas per unit volume and large heat transfer coefficients. The technology can recover the thermal energy from the product flow to heat the reactant flow to the reactant temperature, significantly reducing the energy needs for accomplishment of a process.

The present invention is a cross-flow evaporator adapted to generate vapor from the heat of the exhaust gases from an internal combustion engine. The evaporator is constituted, among other elements, by two plates spaced from one another which contain chambers. The heat exchange tubes alternately communicate the chambers of both plates, establishing a specific path for the fluid intended to change phase. The tubes extending between the chambers of the two plates are arranged transverse to the flow of the hot gas. This evaporator is suitable for heat recovery systems using a Rankine cycle, making use of the heat from the exhaust gases. The invention is characterized by a special configuration of the chambers by means of caps that allow the evacuation-of the gases generated during a brazing welding in the manufacturing process.

In one embodiment, a cooling system may include a thermosyphon cooler that cools a cooling fluid through dry cooling and a cooling tower that cools a cooling fluid through evaporative cooling. The thermosyphon cooler may use natural convection to circulate a refrigerant between a shell and tube evaporator and an air cooled condenser. The thermosyphon cooler may be located in the cooling system upstream of, and in series with, the cooling tower, and may be operated when the thermosyphon cooler is more economically and/or resource efficient to operate than the cooling tower. According to certain embodiments, factors, such as the ambient temperature, the cost of electricity, and the cost of water, among others, may be used to determine whether to operate the thermosyphon cooler, the cooling tower, or both.

Various embodiments of a waste heat recovery and conversion system are disclosed. In one exemplary embodiment, the waste heat recovery system may include a heat exchanger for transferring heat from a first fluid to a second fluid and a power conversion unit configured to convert the energy transferred from the first fluid to the second fluid into usable energy. The heat exchanger may include an outer duct defining an inlet and an outlet through which the first fluid flows in and out, respectively, of the outer duct. The heat exchanger may also include an inner duct disposed inside the outer duct and defining an inner channel inside the inner duct and an outer channel between an outer surface of the inner duct and an inner surface of the outer duct. The inner duct may define an internal flow channel through which the second fluid flows to exchange heat energy with the first fluid.