Photovoltaic thermals Photovoltaic/thermal systems 4 Solar power generation 4 Flow rate 3 Control approach 2 Controllers 2 Cooling 2 Cooling fluids 2 Cost analysis 2 Cost benefit analysis 2 Cost reduction 2 Energy systems 2 Heat pump systems 2 Heat pumps 2 Operating cost analyse 2 Operating costs 2 PVT 2 Pumps 2 Reinforcement learning 2 Reinforcement learning approach 2 Solar assisted heat pump 2 Solar collectors 2 control approaches 2 operating cost analysis 2 reinforcement learning 2 solar-assisted heat pump 2 2-D steady state 1 Air 1 Asymmetric 1 Bi-fluid 1