상업용 건물을 대상으로 한 태양광열-지열 이용 Tri-generation 시스템의 성능분석

Abstract

It is necessary to introduce renewable energy systems for zero energy building realization. Recently, many individual renewable energy systems are introducing the commercial buildings. However, the individual renewable energy systems have many disadvantages such as imbalance between energy generation and use, and intermittent energy production dependent on weather conditions. To resolve these disadvantages, a Tri-generation system combined with a photovoltaic-thermal (PVT) and ground source heat pump (GSHP) is proposed. The Tri-generation system can overcome the disadvantages of the individual system and stably provide thermal and electrical energy to buildings. Many researchers are conducting a feasibility assessment of the introduction of the Tri-generation system for energy independence in residential buildings, but there are few studies on performance analysis of the Tri-generation system for commercial buildings. In this study, to promote the supply of the Tri-generation system for commercial buildings, performance analysis of the system was conducted through an energy simulation model. The annual thermal and electrical production of the Tri-generation system was analyzed and the coefficient of performance (COP) was compared between the Tri-generation system and the conventional GSHP system. As for the performance analysis results, the COP of the Tri-generation system was up by 50% compared to the conventional GSHP system.