엑서지를 이용한 지역난방 열요금 제도 제안Suggestion for a New Exergy-Based Heat-Tariff Assessment for a District-Heating System
- Other Titles
- Suggestion for a New Exergy-Based Heat-Tariff Assessment for a District-Heating System
- Authors
- 문정환; 유호선; 이재헌; 문승재
- Issue Date
- Apr-2017
- Publisher
- 대한설비공학회
- Keywords
- District heating(지역난방); Heat tariff(열요금); Exergy(엑서지); Incentive(인센티브)
- Citation
- 설비공학 논문집, v.29, no.4, pp.202 - 211
- Journal Title
- 설비공학 논문집
- Volume
- 29
- Number
- 4
- Start Page
- 202
- End Page
- 211
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/6779
- DOI
- 10.6110/KJACR.2017.29.4.202
- ISSN
- 1229-6422
- Abstract
- In this study, the exergy that can be reflected in the energetic and economic values was used to assess the heat tariff of a district heating (DH) system instead of the enthalpy. It is difficult to directly apply the exergy to the current heat-charge system because of the complicated calculation; therefore, the difference between the supply and return temperatures was converted to the exergy-temperature difference for the ease of the heat-amount calculation. As a result of the exergy analysis for a DH substation, the exergy-temperature difference did not affect the surrounding temperature and pressure loss. The supply temperature and the maximum difference between the supply temperature and the return temperature exerted the main effect on the exergy-temperature difference. The new heat charge of a DH user was slightly reduced in winter compared with the previous charge, but the heat charges in the other seasons are almost the same. It is concluded from the assessment of the heat tariff for which the exergy is used that this tariff is more feasible for both DH suppliers and consumers compared with enthalpy.
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