SELF ADAPTIVE REFRIGERANT FLOW LOW TEMPERATURE DRIVEN DUAL LIFT ABSORPTION CYCLE

摘要

A dual lift water ammonia low temperature driven absorption cycle has been developed in which thernrefrigerant flow self adapts to the evaporator and absorber loads. A 3.4 kW air cooled chiller unit has beenrnfully simulated and a prototype built and tested. The unit was run with hot water at inlet temperatures fromrn70℃ to 95℃ and with air temperature ranging from 25℃ to 40℃ . On the entire range of testing conditionsrnthe chiller delivers cooling capacity and runs smooth in transient and stable in steady state. In the currentrnprototype setup ongoing test, at 35℃ outdoor ambient temperature, 7℃ outlet chilled water, 92℃ drivingrnhot water the chiller prototype has a cooling capacity of 3.4 Kw with a COP of 0.29 and 360 W powerrnconsumption for the fan and the solution pump. At 32℃ outdoor ambient temperature, 7℃ outlet chilledrnwater, 79℃ driving hot water the prototype has a cooling capacity of 2.5 Kw with a COP of 0.28 and 285 Wrnpower consumption for the fan and the solution pump.