Performance analysis of hybrid photovoltaic thermal solar system in Iraq climate condition

Abstract

In this paper, the hybrid photovoltaic/thermal solar domestic hot water (PVT-SDHW) has been numerically investigated to determine its thermal and electrical performance of a house consists of 5 persons in Iraq climate environment. Detailed mathematical formulation of the PVT-SDHW system have been developed. To validate the feasibility of the developed numerical code, the present results have been compared with the experimental and numerical results and the comparison shows a good agreement between them. The PVT-SDHW system has been tested using the solar radiation data of Mosul city/Iraq that was estimated from ASHRAE Clear Sky Model. The auxiliary heater power, electrical power generation, storage tank water temperature, thermal solar fraction and demand electrical fraction have been analysed. The packing factor (rc) has been considered in this study as a key parameter. The results show that the minimum auxiliary heater power required and the maximum thermal solar fraction occurred when rc=0. Most importantly, the results also indicated that the electricity production has been increased by increment in rc. For rc=1, it has been found that the PVT-SDHW provides hot water between 61.7% and 83% and electricity generation between 24.5% and 43.9% needed by a family of five persons for various months.