2017-12-18

Feasibility of Developing Heat Exchange Network between Incineration Facilities and Industries in Cities: Case of Tokyo Metropolitan Area

Yi Dou, Satoshi Ohnishi, Minoru Fujii, Takuya Togawa,Tsuyoshi Fujita, Hiroki Tanikawa, Liang Dong

Information of Paper

Feasibility of Developing Heat Exchange Network between Incineration Facilities and Industries in Cities: Case of Tokyo Metropolitan Area

Author:Yi Dou1, 2, Satoshi Ohnishi3, Minoru Fujii1, Takuya Togawa4,Tsuyoshi Fujita1, Hiroki Tanikawa2, Liang Dong1, 5

1 Center for Social and Environmental Systems Research, National Institute for Environmental Studies (NIES)
2 Graduate School of Environmental Studies, Nagoya University
3 Faculty of Science and Engineering, Tokyo University of Science
4 Fukushima Branch, National Institute for Environmental Studies (NIES)
5 CML, Leiden University

Year:2018
Journal:Journal of Cleaner Production, Volume170

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Keywords

Waste heat recovery, Waste management, Energy efficiency, Land use, Tokyo Metropolitan Area

Abstract

Energy conservation is critical for promoting urban low-carbon and sustainable development. Because a large amount of heat energy is wasted during energy conversion and transportation, the recovery of waste heat and its cascading use would substantially save resources and reduce CO2 emissions. As a typical case of the Tokyo Metropolitan Area, direct extracting steam from incinerators for industrial use is considered more efficient than power generation, but hard to be popularized because of long distance heat transport. On the basis of the heat atlas, this study develops an integrated model to assess the feasibility of developing heat exchange network between incineration facilities and industries in city scale, and evaluates the impacts from land use on economic and environmental indices. The result reveals that maximum 45.2% of the incineration waste heat can be utilized to cover 13.8% of the heat consumption in industries, where annual net benefit and CO2 emission reduction could achieve 63 billion JPY (≈0.6 billion USD) and 2200 kt CO2/year, respectively. However, current geographic separation between incineration facilities and industries brings a dilemma between economic and environmental benefits which will obstruct the popularization of waste heat exchange. Given this result, a cluster map to classify involved incineration facilities is provided which helps in establishing a renewal strategy considering positive land use adjustment. These results are also referable in urban planning integrated with distributed energy system as well as provide a case for promoting Urban Symbiosis.

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Fig.1.Physically feasible heat exchange partners and routes in Tokyo Metropolitan Area
Fig.1.Physically feasible heat exchange partners and routes in Tokyo Metropolitan Area
Fig2.Changes of total investment and average investment cost of each route by pay-back period for CO2 emission reduction (1 USD ≈110 JPY)
Fig.2.Changes of total investment and average investment cost of each route by pay-back period for CO2 emission reduction (1 USD ≈110 JPY)

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