Abstract

This research is carried out to utilize the opportunities to use the renewable energy i.e. solar energy for the research complex building at Allama Iqbal Open University, Islamabad, Pakistan. The main objective of the research is to save natural gas and utilize solar energy. The two geysers were installed, solar geyser hybrid with the natural gas geyser, another natural gas geyser (N.G) of the same load along with separated gas meter. Data has been collected from both hybrid and natural gas geysers for the period of one year i.e. Jan-Dec, 2013. The gas meter readings are then compared for both hybrid and natural gas geysers. The results show that, the behavior of linear increase and decrease is due to variation of load on the system as well as variation of solar insolation throughout the year. Load is maximum in winter and minimum in summer. The overall monthly average efficiency of the hybrid solar geyser is 62%. We conclude that a single family can save 62% of natural gas per year by using hybrid solar geyser. Furthermore solar geyser is very useful for the country. The Govt of Pakistan needs to aware the people.

Keywords: Geyser; Hybrid geyser; Thermal performance; Efficiency; Save natural gas