Study on Low Carbon Energy Supply to the District Heating and Cooling Plants and Buildings with a Waste Heat Pipeline in Yokohama City

Toru Ichikawa
Tokyo Gas Co., Tokyo, Japan

Ryota Kuzuki
Tokyo Gas Co., Tokyo, Japan

Satoshi Yoshida
Yokohama National University, Yokohama, Japan

Satoru Sadohara
Yokohama National University, Yokohama, Japan

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp110573388

Ingår i: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:50, s. 3388-3395

Visa mer +

Publicerad: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


District heating and cooling (DHC) in Japan’s major cities are required to further lower their carbon emission. This study proposes to supply zero-carbon steam from a nearby waste incineration plant to the DHCs in the center of Yokohama; Japan’s second largest metropolis by constructing a pipeline between them. To maximize environmental effects of the project; efficient cogenerations will also be integrated extending low carbon heat supply to large buildings along the pipeline. Construction cost of five alternative pipeline routes; revenue from steam sales and the environmental value of reduced CO2 emission were estimated. Then the loan repayment period was calculated to figure out how to finance and manage the project. Because statistical data are used to calculate heat load; actual primary energy consumption and reduction of CO2 emission may differ. Also; without a detailed field survey; assumed construction cost may not correspond to the actual amount to be financed. From the study it became clear that steam pipeline with cogeneration will reduce 3.6 PJ of primary energy use and 300;000 tons of CO2 emission annually. The project will become feasible with loan repayment period of 8 and 10 years with and without subsidy by minimizing the construction cost.


District heating and cooling; low carbon; waste heat; CO<sub>2</sub> emission; steam pipeline


[1] Japan District Heating & Cooling Assication; District Heating Technology Guide (Rrevised Edition) ; 2002

[2] Tokyo’s 23 Wards Cleaning Association; Working Report of the Waste Incineration Plants in FY 2009; 2010

[3] The Japan Heat Service Utilities Association; Heat Supply Business Handbook; 2009

[4] Japan District Heating & Cooling Assication; Feasibility Studies of Exhaust Heat Utilization from Waste Incineration plants in Central Tokyo District; 2010

[5] Japan Environmental Systems Co.; Basic Research on the Improvement of Urban Thermal Environment by the Reduction of Anthropogenic Heat Disposal; 2009

[6] Japan District Heating & Cooling Association; Research on the Application of Untapped High-temperature Energy Sources in Japan’s Metropolis; 2010

Citeringar i Crossref