West Bank and Gaza strip suffer from huge shortage of conventional energy sources and at the same time own high potential of solar energy radiations. The solar radiation can mainly be utilized for electricity generation using PV technology and for water heating using solar water heaters technology. Solar water heaters (SWH) are one of the most important applications utilized in West Bank and Gaza strip. This paper assesses the environmental impact of implementation of collective SWH systems in health sector through a case study of a hospital located in Nablus/West Bank. A collective SWH system supplemented with auxiliary heater for a hospital is designed in this study. The hospital demand for hot water is about 5500 liters /day. Indirect closed loop forced SWH with water storage tanks are used. Auxiliary water heating is to be provided via diesel fueled boiler.
RETScreen® software solar water heating project model is utilized in this paper to perform simulations. The total collectors’ area is 77.52 m2 of evacuated type. The capacity of proposed system is about 47.6kW. The annual heating energy delivered by the SWH collector system is 62.2 MWh which corresponds to 61% solar fraction. The corresponding CO2 saving is about 72.5 tons on the basis that coal is the base case electricity system fuel type. The CO2 saving is about 27.9 tons if a diesel boiler provides the system with the required energy. The simple payback period of the project is 2.8 years and the equity payback is 2.2 years.