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Heating and Cooling
Published in Stan Harbuck, Donna Harbuck, Residential Energy Auditing and Improvement, 2021
In addition, the highly caustic condensate that high efficiency furnaces typically generate usually drains to the nearest floor drain and often disintegrates the concrete it flows over to get to the drain. Sometimes, especially on houses with no lower level floor drain, a condensate pump (usually not much bigger than a large matchbox or shoe box) is used to divert high efficiency furnace and/or air-conditioning condensate water to a sewer line.
Effects of decompression condition and temperature on drying rate in a hybrid heat pump decompression type dryer used for seafood drying
Published in Drying Technology, 2021
Mohamed Murshid Shamsuddeen, Dong-An Cha, Seon-Chang Kim, Jin-Hyuk Kim
The products to be dried are placed on 24 trays with 4 trays on a rack and 6 racks inside a rectangular inner enclosure. The hot air from the condenser outlet passes over the trays thereby carrying the moisture from the food substances placed on the trays. The moisture contained air is then returned to the evaporator through the duct formed between the inner enclosure and outer cylindrical chamber. Four recirculation fans placed at the evaporator inlet maintains the flow into the evaporator. The arrows inside the drying chamber show the hot airflow direction in Figure 1. In the evaporator, the refrigerant undergoes a 2-phase change from liquid to vapor to cool and dehumidify the moist air. Cooling the air below its dew point condenses the water from the air. The dehumidified air then absorbs the heat from the condenser for sensible heating to the desired temperature. The hot air cycle is repeated until the target moisture weight is achieved. The water from the evaporator-condenser unit is collected in a condensate tank and is pumped outside by the condensate pump.