57G Air conditioner technical manuals, inspection codes, videos, software, simulations of various brands... For details, click on the link: HVAC technical information, hot stuff, private message reply: information, for details. The economizer is a heat exchanger that absorbs heat

57G Various brands of air conditioning technical manuals, inspection codes, videos, software, simulations... For details, click on the link :

Economizers can be divided into shell and tube type, casing type, plate heat exchanger , these all belong to Economizer. The cooling capacity of economizer can be obtained by the difference between the cooling capacity with and without the economizer. The subcooled liquid temperature must be at least 10 K higher than the intermediate pressure saturation temperature. In order to prevent wet operation when the subcooler circuit is connected, it is recommended to use the expansion valve designed for liquid injection, with a superheat setting of about 10 K.

The economizer should be installed under the compressor to prevent refrigeration oil and liquid refrigerant from flowing back into the compressor during shutdown. When the compressor operating condition is unstable and the subcooling circuit is disconnected, the compressor may overflow some oil from the economizer injection port. Therefore, the injection pipe should be arranged as shown in the figure below. Since the economizer injection port leads directly to the rotor, it is recommended to install a fine filter (max. 25μm).