High efficiency H2O/LiBr double effect absorption cycles with multi-heat sources for tri-generation application
- Authors
- Yang, Mina; Lee, Seung Yeob; Chung, Jin Taek; Kang, Yong Tae
- Issue Date
- 1-2월-2017
- Publisher
- ELSEVIER SCI LTD
- Keywords
- COP; Generator arrangement; H2O/LiBr double effect; Multi-heat sources; Tri-generation
- Citation
- APPLIED ENERGY, v.187, pp.243 - 254
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED ENERGY
- Volume
- 187
- Start Page
- 243
- End Page
- 254
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/84488
- DOI
- 10.1016/j.apenergy.2016.11.067
- ISSN
- 0306-2619
- Abstract
- The objective of this study is to develop a high-efficiency double effect absorption cycle using multi-heat sources for tri-generation (trigen) application. The trigen system produces electricity, heating and cooling loads at the same time. The double-effect absorption refrigeration system consists of two generators, condensers, solution heat exchangers, expansion valves, an absorber and an evaporator. The cycle simulation is carried out for the H2O/LiBr double effect absorption cycle with multi-heat sources for parallel, serial, reverse, revised serial and revised reverse flow patterns. The absorption refrigeration system uses the high temperature steam and hot water as the multi-heat sources. A new high-efficiency cycle is selected depending on the arrangements of additional heat exchangers. This study recommends HX 2-2 cycle with two additional heat exchangers (SDHHX and DHX) as the best candidate for trigen application. It is concluded that T-Hotwater has much more significant effect on the COP and (Q) over dot(E) than T-steam, in the HX 2-2 cycle. It is also found that the most important UA to affect the COP is UA(LG) while that to affect (Q) over dot(E) is UA(A). (C) 2016 Elsevier Ltd. All rights reserved.
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