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Development of an algorithm for the automatic adjustment of the heating curve of a heat pump heating system
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.
2018 (English)Independent thesis Advanced level (degree of Master (Two Years)), 5 HE creditsStudent thesis
Abstract [en]

This work deals with the problem of choosing the correct heating curve for a certain building package (envelope plus distribution system). This topic is particularly relevant in countries like Sweden where heating curve is the most common way to control heat pumps. The analysis, involving four building models with respective distribution systems (two have floor heating and two radiators) and a variable speed GSHP, shows how, for a fixed location, the proper heating curve changes considering different building envelopes and different emitters. It is highlighted, therefore, how the adoption of a generic heating curve for all the buildings can cause discomfort and energy inefficiency. An algorithm to adjust the curve is then presented, and the results are compared with the reference case. The algorithm manages to improve comfort considerably and, for the A-class building, also SPF increases a lot (12.5%). The whole study was performed by means of TRNSYS® neglecting the DHW demand.

Place, publisher, year, edition, pages
2018.
Series
TRITA-ITM-EX ; 2018:739
Keywords [en]
heating systems, heat pump, control strategy, heating curve
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:kth:diva-240070OAI: oai:DiVA.org:kth-240070DiVA, id: diva2:1269384
External cooperation
Politechnic University of Milan
Supervisors
Examiners
Projects
EffSys Expand P18: Smart Control Strategies for Heat Pump SystemsAvailable from: 2018-12-10 Created: 2018-12-10 Last updated: 2018-12-10Bibliographically approved

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Applied Thermodynamics and Refrigeration
Energy Systems

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf