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The Energy Efficiency and Economic Feasibility Analysis of the Distributed Absorption Cooling Combined With District Heating System

[+] Author Affiliations
Qunli Zhang, Lin Fu, Hongfa Di

Tsinghua University, Beijing, China

Lihua Li

Tsinghua Urban Planning and Designing Institute, Beijing, China

Paper No. ES2009-90070, pp. 49-55; 7 pages
doi:10.1115/ES2009-90070
From:
  • ASME 2009 3rd International Conference on Energy Sustainability collocated with the Heat Transfer and InterPACK09 Conferences
  • ASME 2009 3rd International Conference on Energy Sustainability, Volume 2
  • San Francisco, California, USA, July 19–23, 2009
  • Conference Sponsors: Advanced Energy Systems Division and Solar Energy Division
  • ISBN: 978-0-7918-4890-6 | eISBN: 978-0-7918-3851-8
  • Copyright © 2009 by ASME

abstract

The distributed absorption cooling based district heating system was investigated in order to utilizing the reject heat from the combined heat and power (CHP) plant in summer. Compared with the electric compressor cooling, the energy efficient and cost-effectiveness of the distributed absorption cooling were furthermore analyzed by the Fuel Energy Saving Ratio (FESR) method. The sensitivity of some variables, such as the average electric efficiency, heating and electric generation efficiency of the CHP system, and the coefficient of performance (COP) of the chiller, were analyzed. The marginal heating price of the distributed absorption cooling can be obtained. According to the evaluation results, the applicability of the distributed cooling with district heating system is limited by the lower energy efficiency and economical benefits. The approaches to increase the energy efficiency were suggested in this paper. The improved distributed absorption cooling combined with liquid desiccant dehumidification which has higher heating utilization efficiency was put forward and analyzed, and the energy efficiency evaluation results showed that the improved distributed cooling has higher energy efficiency and economical benefits, and great applicability.

Copyright © 2009 by ASME

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