Energy-Efficient Operation of PV-T Solar Collectors with Heat Pump based Water Heaters Suitable for Domestic Applications

A photovoltaic-thermal (PV-T) hybrid collector evaporator was designed and developed to produce electrical energy extract thermal simultaneously from the panel using refrigerant circulated tubes. The absorbs heat photovoltaic panels during its phase change liquid vapour. PV-T evaporators deliver both electricity outputs. An R-32 refrigerant-based solar-assisted pump water heating system with a rated output of  4 kW tested performance for producing 150-200 litres hot at an average temperature 60oC. is selected because it does not have any ozone depletion potential (ODP), possess very low global warming (GWP). absorb 3.25 maintains below 30oC. PV 6 kWh, requirement 3.5 kWh. excess power 2.5 kWh has been supplied grid, coefficient (COP) 6.3. For life span 25 years, total equivalent impact analysis (TEWI) resulted in CO2 value 15,543 kg, which much lower than that conventional systems. economic performed reported, found be quite suitable domestic applications also economically feasible payback period years. Keywords: Solar Collectors, VFD Compressor, Domestic Water Heating.