488 results about "Condenser (heat transfer)" patented technology

Carrying out building block type alternant combination for multifunctional heat engineering integrative performance test unit, the method can be in use for carrying out following 8 items of relevant heat engineering experiment: mensurating performance coefficient of refrigeration cycle; available energy loss in heat transfer of temperature difference in heat exchanger; performance of cooling tower; intelligent controlling temperature of hot water tank; performance of condenser, performance of evaporating pipe, performance of cooling pipe, and performance of compressor. Full automatic computer test means are adopted in the invention so that dynamic changes of parameters to be tested can be observed visually. The method excitates students' interest in experiment to test parameters, process data, and accomplish whole procedure for measuring each performances.

An exemplary heat exchanger includes evaporator channels and condenser channels, connecting parts for providing fluid paths between evaporator channels and the condenser channels, a first heat transfer element for transferring a heat load to a fluid in said evaporator channels, and a second heat transfer element for transferring a heat load from a fluid in the condenser channels. In order to achieve a heat exchanger that can be used in any position, the evaporator channels and said condenser channels can have capillary dimensions. The connecting part arranged at a first end of heat exchanger can include a first fluid distribution element for conducting fluid from a predetermined condenser channel into a corresponding predetermined evaporator channel, and the connecting part arranged at a second end of the heat exchanger can include a second fluid distribution element for conducting fluid from a predetermined evaporator channel into a corresponding predetermined condenser channel.

The invention relates to an integral heat pipe composite air conditioner. A heat pipe device is a loop which is formed by sequentially connecting a heat pipe condenser and a heat pipe evaporator through pipelines, wherein the heat pipe condenser is arranged above the heat pipe evaporator; the heat pipe condenser and a condenser share a fan; the heat pipe evaporator and an evaporator share a centrifugal fan; a first temperature sensor is arranged at an air inlet of the condenser; a second temperature sensor is arranged at an air inlet of the evaporator; and the first temperature sensor, the second temperature sensor, a compressor, the fan and the centrifugal fan are respectively connected with a controller. The technical scheme shows that the integral heat pipe composite air conditioner combines a traditional steam compression refrigeration technology with a heat pipe technology, the air conditioner is used for refrigeration at a normal condition, when an indoor and outdoor temperature difference reaches a set temperature, the controller switches off signals of the compressor, at the moment, the compressor stops working, the heat pipe device begins working, the heat pipe is used for exchanging heat so as to realize the low temperature refrigeration and heat transfer and increase the function of the air conditioner under the condition that the appearance of the air conditioner is not changed.

A process comprising electrically activating a thermoelectric module (24) to provide a first module heated surface (26) and a module cooler surface (28); feeding the impure liquid to the first module heated (26) surface to produce vapour of the liquid; and transferring the vapour to the module cooler surface (28) to effect heath transfer to the module cooler surface (28), the improvement comprising (a) directing a first portion of the vapour adjacent to or onto the module cooler surface (28) to effect heat transfer to the module cooler surface to produce a first condensed liquid (b) directing a second portion of the vapour to condenser means (18) comprising a second cooler surface (46) remote from the module cooler surface (28) to effect heat transfer to the second cooler surface (46) to produce a second condensed liquid; and (c) collecting the first and second condensed liquids; wherein the condensation means is such as to accept the balance of the latent heat contained in the vapour produced by the first module heated surface (26) which latent heat cannot be pumped from the module cooler surface (28) through the module to the first module heated surface (26) in order to maintain the process under continuous vapour flow.

A device and method for heat distribution in a hybrid motor vehicle are provided. The device includes an engine cooling circuit; and a refrigerant circuit for a combined operation in a refrigeration heat pump mode and a reheating mode, includes an evaporator, a compressor, a heat exchanger to supply heat from the refrigerant to air being conditioned for a passenger compartment; and a heat exchanger to transfer heat between a refrigerant of the refrigerant circuit and coolant of the engine cooling circuit, wherein the heat exchanger operates as an evaporator for the heat transfer, and as a condenser for the heat transfer from the condensing refrigerant to the coolant. The engine cooling circuit is provided with a first engine and a second engine. The first engine is configured as an internal combustion engine, and the second engine is configured as a motor. The invention also relates to a method for operating a device for heat distribution of the motor vehicle.

The invention relates to a performance and efficacy testing platform of a heat exchanger. The platform comprises a heat source part, a vapor source part, first and second mixers, an air source part, a shell-and-tube heat exchanger, first and second separators, a shell-and-tube type double-tube heat exchanger testing assembly, a condensation heat exchanger, a boiling heat exchanger, first and second water cooling devices and a steam condenser. The platform can test heat transfer properties and fluid flowing resistances of the shell-and-tube type heat exchanger, the double-tube heat exchangers, the condensation heat exchanger and the boiling heat exchanger respectively, does not occupy much space, reduces the production cost, satisfies practical measurement requirements and has good application and development prospects, and test data is stable and reliable.

The invention provides an integrated micro heat exchanger which can complete drying filtering, throttling and phase-change heat transferring of a refrigerant in a single component and can be used as an evaporator and a condenser as well, and relates to an integrated micro heat exchanger component with drying filtering and throttling functions. The integrated micro heat exchanger component comprises a micro plate heat exchanger 1, a fluid connector 2, another fluid connector 3, a refrigerant connector 4, a drying filtering element 5, a micro throttling element 6, a refrigerant circulation hole 7, another refrigerant circulation hole 8 and a refrigerant connector 9. The micro plate heat exchanger 1 is an entity formed by arranging four plates, etched into flow passages of different shapes, according to a certain sequence prior to vacuum diffusion welding. The refrigerant circulation hole 7 and the refrigerant circulation hole 8 are formed by means of post processing in the side face direction after the micro plate heat exchanger 1 is welded together into the entity. The drying filtering element 5 and the micro throttling element 6 are mounted in the refrigerant circulation hole 7. The drying filtering element 5 is a molecular sieve filter formed by sintering, and the micro throttling element 6 is a short throttling pipe or a throttling orifice with micropores drilled in the middle.

The invention discloses a multi-effect evaporation concentration technology, a multi-effect evaporation crystallization technology and a multi-effect evaporation concentration device of a solution containing sulfuric acid and sulfate. The technologies and the device are characterized in that low-temperature-difference heat transfer flow evaporation is adopted; step-by-step secondary steam series preheating is adopted; an acid bath is led as an evaporation crystallization carrier; and last-effect or last-two-effect evaporation crystallization is adopted. The evaporation concentration and crystallization device mainly comprises (1-n)-effect evaporation crystallizers, (1-n)-effect circulating pumps, 1-(n-1)- or 1-(n-2)-stage preheaters, condensers and vacuum devices. According to the technologies and the device, a steam-water ratio of acid bath 5-7-effect evaporation crystallization reaches an advanced level of 0.17-0.19; a steam-water ratio of acid water and two-bath 6-8-effect evaporation crystallization reaches an advanced level of 0.13-0.15; a steam-water ratio of a low-concentration acid water 7-9-effect evaporation concentration device can further reach an advanced level of 0.09-0.11, but the state-of-the-art steam-water ratio of 16-stage flash evaporation crystallization is 0.255 in the current industry.

A condenser has heat exchange plates stacked between which the first and second gap portions are provided alternately. Each plate has a heat transfer section having grooves combined into a V-shape and a hole for discharging condensate. The section has tubular projections formed around the hole on the rear surface of the plate, and tongue-shaped projections formed around the hole on the front surface of the plate. The condenser has a continuous passage which passes linearly through the heat exchange plates in the stacking direction thereof. The passage enables condensate generated in the first gap portions to move in the stacking direction of the heat exchange plates.

A frozen product dispenser is characterized by at least two product freeze barrels for receiving product therein and for freezing the product for dispensing, and a refrigeration system for chilling the at least two barrels. The refrigeration system has at least two evaporators for and heat transfer coupled to each barrel, separate and controllable expansion valves each having an outlet coupled to an inlet to an inlet to an associated one of the evaporators, at least two compressors having outlets coupled to inlets to the expansion valves and inlets coupled to outlets from the evaporators, and at least one condenser in fluid circuit between outlets from the compressors and inlets to the expansion valves. The refrigeration system is controllable to selectively operate one or more of the compressors and one or more of the expansion valves in accordance with the cooling requirements of the barrels to provide an improved turndown ratio for improvements in efficiency of operation of the refrigeration system in response to changing cooling load requirements of the product barrels.

A server rack thermosiphon system (100) includes a plurality of evaporators (123), each evaporator including a thermal interface for one or more heat-generating server rack devices (124); at least onecondenser (115) mounted to an external structure of a server rack (105), the condenser including a fluid-cooled heat transfer module; a liquid conduit (119) that fluidly couples each of the evaporators to the condenser to deliver a liquid phase (107) of a working fluid from the condenser to the evaporators; and a vapor conduit (117) that fluidly couples each of the evaporators to the condenser todeliver a mixed phase (103) of the working fluid from the evaporators to the condenser.

A system and method for preparation of meat flavorants, and flavorants, having increased flavor and aromatic intensity and which more closely resemble the natural flavor and aroma of cooked meat. Preheated edible, food grade oils and fats are exposed to temperatures between 290° C. and 475° C. under vacuum, in the presence of oxygen. The developing flavor vapors are immediately and completely removed from the heated oils and fats. The mixture of air-purge/flavor-vapor is immediately carried away from the heat transfer surface of the edible oil or fat. An evaporator, preferably a spinning disc, spinning band or thin film evaporator, without a condenser is used as process equipment. The air-purged flavor-vapors are diffused and absorbed in an absorption device into suitable food-grade liquids.