TY - JOUR
T1 - Synthesis of energy efficient chilled and cooling water network by integrating waste heat recovery refrigeration system
AU - Chan, Wai Mun
AU - Leong, Yik Teeng
AU - Foo, Ji Jinn
AU - Chew, Irene Mei Leng
N1 - Funding Information:
The authors would like to acknowledge the financial support from Monash University Malaysia ( Higher Degree by Research Scholarships ).
Publisher Copyright:
© 2017 Elsevier Ltd
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017/12/15
Y1 - 2017/12/15
N2 - Vapor compression refrigeration system (VCRS) is the conventional technology that uses electricity to generate chilled water for process cooling and air conditioning. On the other hand, there are various alternative green technologies that use waste heat to drive refrigeration system. In current industrial practices, abundant amounts of waste heat in the form of steam, hot water and flue gas remain untapped and are wasted. Absorption refrigeration system (ARS) is the alternative green technology that could recover those waste heats to produce cooling utility. In previous works, the integration of chilled and cooling water network within an Eco-Industrial Park (EIP) has been proven to be more cost effective than individual plant. However, the network is configured with VCRS which is an energy intensive technology. In this paper, ARS is integrated with VCRS to synthesize an energy efficient chilled and cooling water network using superstructure optimization approach. To further enhance energy efficiency, secondary waste heat recovery is proposed. Results shown the proposed ARS-VCRS integrated network has reduced the CO2 emission and the overall costs by 53% and 21% compared to VCRS alone. The minimum cooling duty and waste heat in the EIP for ARS-VCRS installation are determined through sensitivity analysis.
AB - Vapor compression refrigeration system (VCRS) is the conventional technology that uses electricity to generate chilled water for process cooling and air conditioning. On the other hand, there are various alternative green technologies that use waste heat to drive refrigeration system. In current industrial practices, abundant amounts of waste heat in the form of steam, hot water and flue gas remain untapped and are wasted. Absorption refrigeration system (ARS) is the alternative green technology that could recover those waste heats to produce cooling utility. In previous works, the integration of chilled and cooling water network within an Eco-Industrial Park (EIP) has been proven to be more cost effective than individual plant. However, the network is configured with VCRS which is an energy intensive technology. In this paper, ARS is integrated with VCRS to synthesize an energy efficient chilled and cooling water network using superstructure optimization approach. To further enhance energy efficiency, secondary waste heat recovery is proposed. Results shown the proposed ARS-VCRS integrated network has reduced the CO2 emission and the overall costs by 53% and 21% compared to VCRS alone. The minimum cooling duty and waste heat in the EIP for ARS-VCRS installation are determined through sensitivity analysis.
KW - Absorption refrigeration
KW - Eco-industrial parks
KW - Heat integration
KW - Multiple waste heats
KW - Vapor compression refrigeration
UR - http://www.scopus.com/inward/record.url?scp=85035333293&partnerID=8YFLogxK
U2 - 10.1016/j.energy.2017.11.056
DO - 10.1016/j.energy.2017.11.056
M3 - Article
AN - SCOPUS:85035333293
VL - 141
SP - 1555
EP - 1568
JO - Energy
JF - Energy
SN - 0360-5442
ER -