Experimental study on a hybrid energy system with small- and medium-scale applications for mild climates

摘要: Abstract This paper presents the design and performance of a hybrid energy system. The system consists standard air-conditioning unit (i.e., split system), with an integrated boiler for heating water. entire is driven by small off-grid photovoltaic plant was tested at geographical location typical Mediterranean climate in summer. Three different working regimes were analyzed: daytime regime, nighttime intense regime. water consumption also simulated to investigate its effect on overall Experimental measurements work indicated that achieved COP c between 5.0 6.0. mean engaged electric power compressor ranged 500 700 W. temperature heated from 43.1 °C 51.0 °C, maximum recorded value 60.6 °C. research results demonstrate could be implemented small- or medium-scale residential touristic facilities countries mild climates, where heat pump systems can used achieve relatively high seasonal (coefficient performance) values.