期刊
ENERGY
卷 223, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2021.119904
关键词
District heating; Wastewater treatment plant; Sewage sludge; Biogas; Thermoeconomic analysis
资金
- Danida Fellowship Centre
- Ministry of Foreign Affairs of Denmark [18M06AAU]
This paper explores the district heating potentials of wastewater treatment plants based on their biogas, electricity, and heat productions, presenting two district heating scenarios. It is found that waste heat from cogeneration can effectively provide heating services, and the use of biogas can meet the energy needs of more households.
In this paper, district heating (DH) potentials of the wastewater treatment plants (WWTPs) based on their biogas, electricity, and heat productions are considered. Two district heating scenarios are developed: (i) DH Scenario I which is based on both excess biogas storage of the WWTP and exhaust gas of the cogeneration with the actual power output, (ii) DH Scenario II which is based on the exhaust gas of the cogeneration with the increased power output using all the biogas produced. In DH Scenario I, it is found that 458 dwellings can be heated via the DH system proposed considering only the waste heat of the cogeneration. In addition, the natural gas consumption of 1112 dwellings with the same annual heating load can also be met using the purified biogas. In DH Scenario II, the electricity production could be increased to 1643 kWh by burning all the biogas produced in the cogeneration plant. In this scenario, the annual heating load of 755 dwellings in Gaziantep province can be covered using the waste heat in the DH system. The payback period for the DH Scenario I is calculated as 2.5 years, while for the DH Scenario II, it is obtained as 2 years. (c) 2021 Elsevier Ltd. All rights reserved.
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