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KMID : 1024520120210050545
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Journal of the Environmental Sciences
2012 Volume.21 No. 5 p.545 ~ p.553
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Eco-efficiency of Energy Symbiosis for the Energy Network of Surplus Heat
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Shin Choon-Hwan
Kim Ji-Won
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Abstract
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Eco-efficiency considers both environmental impacts and economic values. It is a useful tool for communicating with
stakeholders for business decision making. This study evaluated the eco-efficiency factor (EEF) for the energy network of
a dyeing company that supplies surplus heat to a neighboring apartment during the night. This symbiosis network is one of the eco-industrial park (EIP) projects in Korea and aims to benefit local residents and the industrial complex by utilizing
surplus heat. In this study, two categories were annualized. The first quantified environmental burden based on CO2
emissions and quantified product value in terms of steam sales. The second used a variety of environmental factors, such
as fossil fuel, water and waste, to quantify environmental burden and used steam sales to quantify value. The EEF of the
symbiosis network was 1.6, using the global warming impact, and determined using the multiple variable, was 1.33. This
study shows that the EEF depends on variable details of environmental burden but the values of this project were very high
contrast to other business or EIP project.
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KEYWORD
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Eco-efficiency, Industrial symbiosis, Eco-industrial park, District heating, Multiple variables
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