Economic analysis of the solar assisted triple co-generation system on a Hotel in Tehran

Small-scale cogeneration systems, by using the micro-turbines, have provided required electricity and heat in Hotels and residential complexes over the years. Hotels with CCHP system has higher energy efficiency compared to other energy systems, since usescogeneration waste heat for heating and cooling applications. The main advantages of cogeneration systems are reduction in fuel consumption, lower greenhouse gas emissions and environmental pollutions. In this study, it was tried to further introduce these systems, their function and economic analysis at the national level, in order to extend their usage in different places such as office, industrial, commercial and residential complexes. One method is to use solar radiation to provide part of energy required for water heating. Energy consumption pattern in a large hotel over the years was considered and economic analysis was performed for different energy consumption scenarios. Payback period were computed of each scenario, in order to make a positive attitude towards the use of cogeneration systems utilizing solar energy.