China
Africa
Explore chapters and articles related to this topic
Heat Exchangers
Published in William S. Janna, Engineering Heat Transfer, 2018
Figure 9.19 shows how a crossflow exchanger, similar to those used as automobile radiators, is constructed. As indicated, a thin copper sheet is bent into a sine-wave cross-sectional shape and placed inside a brass piece that has a rectangular shape. A number of these assemblies are placed side by side, then the faces are dipped into a flux and next into molten solder. The edges of adjacent brass pieces are joined, and the copper pieces are also thus joined to the brass at points of contact. Tanks containing inlet and outlet fittings are next soldered to the ends. The size of the exchanger is controlled by the number of brass-copper assemblies used. The finished piece is known by a variety of names (such as a radiator or a heater core). Regardless of terminology, its function is to exchange heat.
*
Published in Adedeji B. Badiru, Sharon C. Bommer, Work Design A Systematic Approach, 2017
Adedeji B. Badiru, Sharon C. Bommer
In Table 8.3, “M” stands for the module, module 1 represents the radiator, module 2 represents the engine fan, module 3 represents the heater core, module 4 represents the heater hoses, module 5 represents the condenser, module 6 represents the compressor, module 7 represents the evaporator case, module 8 represents the evaporator core, module 9 represents the accumulator, module 10 represents the refrigerator controls, module 11 represents the air controls, module 12 represents the sensors, module 13 represents the command distribution, module 14 represents the actuator, module 15 represents the blower controller, and module 16 represents the blower motor.
Performance evaluation of an automotive air conditioning and heat pump system using R1234yf and R134a
Published in Science and Technology for the Built Environment, 2021
Mumin Celil Aral, Mukhamad Suhermanto, Murat Hosoz
While comfort cooling of vehicle passenger compartments is performed by an AC system relying on vapor-compression refrigeration, their comfort heating in conventional vehicles is conducted by a heater core through which the engine coolant passes as a heat source. However, some modern diesel engines cannot supply enough waste heat in a reasonable time period after starting up the engine due to high engine efficiency. Moreover, electric vehicles suffer from the lack of waste heat to be used for comfort heating due to the absence of an internal combustion engine. Therefore, these vehicles should employ other methods for this aim, one of which is to reverse the operation of the present AC system, thus operating it as a heat pump (HP).