Abstract
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.
| Original language | English |
|---|---|
| Article number | 119904 |
| Journal | Energy |
| Volume | 223 |
| DOIs | |
| Publication status | Published - 15 May 2021 |
Bibliographical note
Publisher Copyright:© 2021 Elsevier Ltd
Funding
The authors acknowledge the support of the “HeatReFlex-Green and Flexible District Heating/Cooling” project ( www.heatreflex.et.aau.dk ) funded by the Danida Fellowship Centre and the Ministry of Foreign Affairs of Denmark to research in growth and transition countries under the grant no. 18-M06-AAU .
| Funders | Funder number |
|---|---|
| Danida Fellowship Centre | |
| Udenrigsministeriet | 18-M06-AAU |
Keywords
- Biogas
- District heating
- Sewage sludge
- Thermoeconomic analysis
- Wastewater treatment plant
