Energetic and Exergetic Analysis of Low and Medium Temperature District Heating Network Integration

Hongwei Li, Svend Svendsen

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Abstract

In this paper, energetic and exergetic approaches were applied to an exemplary low temperature district heating (LTDH) network with supply/return water temperature at 55oC/25 oC. The small LTDH network is annexed to a large medium temperature district heating (MTDH) network. The LTDH network can be supplied through upgrading the return water from the MTDH network with a small centralized heat pump. Alternatively, the supply and return water from the MTDH network can be mixed with a shunt at the junction point to supply the LTDH network. Comparing with the second approach, the heat pump system will reduce the amount of water supply from the MTDH network and improve the system energy conversion efficiency. Through the simulation, the system energetic and exergetic efficiencies based on the two network integration approaches were calculated and evaluated.
Original languageEnglish
Publication date2011
Publication statusPublished - 2011
Event2nd International Exergy, Life Cycle Assessment, and Sustainability Workshop and Symposium - Nisyros, Greece
Duration: 19 Jun 201121 Jun 2011
Conference number: 2
http://www.elcasnet.com/

Workshop

Workshop2nd International Exergy, Life Cycle Assessment, and Sustainability Workshop and Symposium
Number2
CountryGreece
CityNisyros
Period19/06/201121/06/2011
Internet address

Keywords

  • District Heating Heat Pump Exergy

Cite this

Li, H., & Svendsen, S. (2011). Energetic and Exergetic Analysis of Low and Medium Temperature District Heating Network Integration. Abstract from 2nd International Exergy, Life Cycle Assessment, and Sustainability Workshop and Symposium, Nisyros, Greece. http://www.elcasnet.com/