Introduction of new decentralised renewable heat supply in an existing district heating system

Miika Rämä, Mikko Wahlroos

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

The effects of new heat pump and solar collector capacity in an existing district heating system are studied using Helsinki district heating system as a case study. Existing heat supply consists of combined heat and power plants, boilers and large-scale heat pumps. Also, the significance of low distribution temperatures is evaluated. An outdoor temperature dependent supply temperatures between 80-110 °C and a constant supply temperature of 65 °C are considered for distribution.

EnergyPro modelling tool is utilised, providing information on optimal operation of heat supply. Changes in heat supply are studied with emissions and techno-economic performance of the new heat sources evaluated.

Results indicate that CHP based heat production is set the decrease 67-75 % by 2030. Heat pumps represented the most interesting option for heat supply with significantly better performance in all economic, emissions and energy efficiency point of views. Low temperature distribution further improved the system performance.
Original languageEnglish
Title of host publicationThe 12th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES
PublisherFaculty of Mechanical Engineering and Naval Architecture, Zagreb
Pages1-16
Number of pages16
Publication statusPublished - 2017
MoE publication typeA4 Article in a conference publication
EventConference on Sustainable Development of Energy, Water and Environment Systems - Dubrovnik, Croatia
Duration: 4 Oct 20178 Oct 2017
Conference number: 12

Publication series

NameBook of abstracts : Dubrovnik Conference on Sustainable Development of Energy, Water and Environment Systems
PublisherEnergetika marketing
ISSN (Print)1847-7186
ISSN (Electronic)1847-7178

Conference

ConferenceConference on Sustainable Development of Energy, Water and Environment Systems
Abbreviated titleSDEWES
CountryCroatia
CityDubrovnik
Period04/10/201708/10/2017

Keywords

  • District heating
  • Heat pumps
  • Solar collectors
  • Combined heat and power
  • Low temperature distribution
  • Energy system modelling

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