The main components of the chiller, such as generators, […]
The main components of the chiller, such as generators, condensers, absorbers, evaporators, solution heat exchangers, etc., are heat exchange equipment. From the perspective of their heat transfer tube structure, they belong to shell-and-tube heat exchangers, Chillers only because they play different roles in the unit.
Absorption refrigeration working principle
Absorption refrigeration is a cooling method that uses thermal energy as a power. It also uses refrigerant vaporization heat absorption to achieve refrigeration. Therefore, it has similarities with vapor compression refrigeration. The difference is that the compensation methods used to transfer heat from low temperature to high temperature are different.
The mechanical compression of vapor compression refrigeration and the thermal energy of absorption refrigeration. To compensate. At the same time, the working principle diagram of the absorption type and vapor compression type refrigerator is given. The working fluid used in the absorption refrigerating machine is a binary mixture (solution) composed of two substances having different boiling points. The low boiling point substance is a refrigerant, and the high boiling point substance is an absorbent. There are two cycles in the absorption chiller - refrigerant cycle and solution cycle.
The working fluid of the absorption refrigeration cycle is the same as the refrigerant, and the working medium with Freon as the refrigerant mainly contains chlorodifluoromethane-dimethylformamide (R22-DMF) and chlorodifluoromethane-tetraethylene glycol dimethyl ether. (R22-E181), chlorodifluoromethane-dibutyl phthalate (R22-DBP), and the like. It is advantageous to use R22-DMF at high temperature and low condensation temperature. For lower temperature and higher condensation temperature, such as solar refrigeration system, R22-E181 is better.