Retrofit of a liquid desiccant and evaporative cooling-assisted 100% outdoor air system for enhancing energy saving potential
- Title
- Retrofit of a liquid desiccant and evaporative cooling-assisted 100% outdoor air system for enhancing energy saving potential
- Author
- 정재원
- Keywords
- Desiccant evaporative cooling; Liquid desiccant; Membrane enthalpy exchanger; System retrofit
- Issue Date
- 2016-03
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Citation
- APPLIED THERMAL ENGINEERING, v. 96, Page. 441-453
- Abstract
- The objective of this research is to retrofit a liquid desiccant (LD) and indirect/direct evaporative cooling assisted 100% outdoor air system (LD-IDECOAS) to enhance its operating energy saving potential. Two retrofit cases of existing LD-IDECOAS have been considered. The first case involves replacing the indirect and direct evaporative coolers with an M-cycle or a dew-point indirect evaporative cooler (i.e., Case 1), and the other one involves adding an enthalpy exchanger before the LD unit of the system in case 1 (i.e., Case 2). By conducting detailed energy simulations for each retrofit case, the improvements in operating energy saving and the coefficient of performance (COP) over the existing LD-IDECOAS were quantitatively evaluated. The results showed that case 1 might provide enhancement in cooling capacity and thermal COP; however, the heating energy consumption for regenerating the desiccant solution increased with the higher process airflow rate when compared to the existing LD-IDECOAS. It was also found that the cooling capacity, thermal COP, and primary COP could be improved by adding a membrane enthalpy exchanger, as done in case 2, without any significant increase in the heating energy consumption for regenerating the desiccant solution. (C) 2016 Elsevier Ltd. All rights reserved.
- URI
- http://www.sciencedirect.com/science/article/pii/S1359431115013344?via%3Dihubhttp://hdl.handle.net/20.500.11754/36266
- ISSN
- 1359-4311
- DOI
- 10.1016/j.applthermaleng.2015.11.088
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ARCHITECTURAL ENGINEERING(건축공학부) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML