Abstract
To improve the thermal efficiency of unglazed PV/T using flat heat pipe collector, many experiments were performed for estimating the thermal resistance in each part. The results shows 1) increasing the contact area at the condenser decreases the thermal resistance, 2) increasing the flow velocity decreases the heat resistance but it has a tendency to saturate at 0.1 K/W, 3) decreasing the flat heat pipe temperature increases the thermal resistance. Using these results and estimated influence of transmitted solar irradiance and infrared radiation from the PV/T, we proposed the optimized structure for FHP-PV/T and the thermal experiment were performed.
