| Title |
Economic Analysis of Heat Pump System through Actual Operation |
| Authors |
김길태(Gil-Tae Kim) ; 정성일(Seong-Ir Cheong) ; 주호영(Ho-Young Joo) ; 안영철(Young-Chull Ahn) ; 이재근(Jae-Keun Lee) |
| Keywords |
교육용 건축물 ; 열펌프 ; 전기구동식 열펌프 ; 가스엔진구동식 열펌프 ; 생애 주기 비용 ; 현가 Educational building ; Heat pump ; Electric heat pump ; Gas engine driven heat pump ; Life cycle cost ; Present value ; |
| Abstract |
The present study has been conducted economic analysis through actual operation of electric heat pump (EHP) and gas engine driven heat pump (GHP) which are installed at the same building in the university. Cost items, such as initial cost, annual energy cost and maintenance cost of each system are considered to analyze life cycle cost (LCC) and economical efficiencies are compared. The initial cost is considered on the basis of actual cost, and annual energy cost is converted into the cost after measuring electricity and gas con-sumption a day. LCC applied present value method is used to assess economical profit of both of them. Variables used to LCC analysis are electricity cost escalation rate, natural gas cost escalation rate, interest rate, and service lives when each of them are 4%, 2%, 8%, and 20 years. The result shows that EHP (148,257,306won) is more profitable than GHP (161,239,296won) by 8.05% (12,981,990won). |