All European Directives pleads for energy efficiency and, if it is possible, to implement Combined Heat and Power (CHP) high efficiency sources. The system composed by CHP and classical sources (as peak sources) needs to be studied, in order to respect the real scenario of the consumer functioning with optimum efficiency depending on fuel usage. According to this, a careful review and assessment of each potential application is needed. The small-scale CHP sources are suitable for industrial and commercial buildings, as well as for hotels, hospitals etc. Concerning residential consumers, it appears to be a considerable difference between winter and summer loads. The goal of the present article is to achieve reliable information for the assessment of performance capacity of CHP systems, as a key-point for the decision of using small-or micro-CHP. It might be useful for engineers in order to identify the most likely route for their particular duty. The investigation method will be based on the dynamic simulation of the performance of CHP system connected to a residential consumer, located in the city of Bucharest. The study will be performed using two specialized software, suitable for CHP sources and connections.
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