| Title |
Economic Investigation of Small Scale Cogeneration System in a School Dormitory of Busan Region |
| Authors |
송재도(Jae-Do Song) ; 구본철(Bon-Cheol Ku) ; 강율호(Yul-Ho Kang) ; 박종규(Jong-Kyu Park) ; 이재근(Jae-Keun Lee) ; 안영철(Young-Chull Ahn) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2012.24.9.657 |
| Keywords |
흡수식냉동기 ; 열병합발전 ; 기숙사 ; 전기 히트펌프 ; 생애 주기 비용 Absorption chiller ; Cogeneration ; Dormitory ; EHP ; LCC |
| Abstract |
The cogeneration system can operate at efficiencies greater than those achieved when heat and power are produced in separate. The optimal system can be determined by selecting the auxiliary system combined with cogeneration system. In the present study, economic investigation has been conducted with the cogeneration electric heat pump(EHP) system and the cogeneration absorption chiller(AC) system to install in a school dormitory. To analyze life cycle cost(LCC), cost items such as initial investment costs, annual energy costs and maintenance costs of each system have been considered. The initial investment cost is referred to the basis of estimated costs, and annual energy costs such as the electric power and gas consumption are based on the data in a school dormitory. LCC is evaluated with the present worth method. Considering investigated results, the initial investment cost of the cogeneration EHP system is more profitable about 24% than that of the cogeneration AC system. The energy cost of the cogeneration EHP system is more profitable about 8% than the cogeneration AC system. The LCC shows that the cogeneration EHP system is the most effective system in the school dormitory. |