하천수 이용 열원시스템의 경제성 평가

Abstract

Abstract It has become very important for unused energy to be used for building air conditioning. Economic evaluation on energy system by using river water as a heat source, which is one of the unused energy, was carried out. The floor area of the building and the distance between heat source equipment and river was assumed 50,000m 2 and 200m. General heat source system using absorption chiller-heater was used for comparing to the energy saving system, and payback period method using initial cost and running cost of two systems, was used to perform economic evaluation. According to development of high capacity of water source heat pump which is appropriate for using river water, initial cost for the system has been reduced. Payback period was about 3.2 years, and this period might be shortened if nation's economic support enact. Key words: River water(하천수), Unused energy(미활용에너지), Economic evaluation(경제성 평가), Payback period(회수기간), Initial cost(초기투자비), Running cost(운전비) 1. 서 론 1) 선진국을 중심으로 시작된 신재생에너지 및 미활용에너지의 개발 및 적용의 활성화는 우리나라에서도 피할 수 없는 시대적 과제가 되었으며, 우