Microprocessor Based Control System for Heat Pumps
An electrically driven air to water heat pump, offering compressor speed control, motorised expansion valve and a variable speed air flow fan has been designed and tested.
The heat pump system has been fully instrumented and connected, for control and data logging purposes, to a microprocessor based control unit.
By means of suitable control algorithms it has been possible to accurately control the heat pump to optimum design conditions throughout a range of ambient and load energy levels.
Results show that such a control system can result in improved C.O.P.’s when compared to conventional systems.
KeywordsHeat Pump Heat Pump System Capacity Control Compressor Speed Expansion Valve
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- 1.The minimisation of the power consumption of a thermodynamic heat pump by a microprocessor based control system. D.R. Wilson et al., E.E.C. Contractors Conference on Heat Pumps, 27–28 September 1978.Google Scholar