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Trimming of a ground source heat pump system in Saltsjöbaden
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.
2014 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The real performance of ground source heat pumps systems are not precisely highlighted in most cases, especially when it comes to installations older than the contractors guarantee period of 5 years. This project analyses measured data, constructs durability diagrams and establishes an energy balance of a whole heating system located in Saltsjöbaden. The system, composed of 3 heat pumps with a total heating power of 270kW and an oil burner, is used to deliver comfort heat through radiators and ventilation as well as tap warm water production. The installation was originally designed with two oil burners now used as an auxiliary heat supplier. Two heat pumps were installed in 1999 and a third unit was added in 2009. However, the oil consumption has been higher than expected. An experiment with controlled oil burner operation confirmed the need of implementing a control strategy. Some weaknesses in the system are pointed out.

Place, publisher, year, edition, pages
2014. , 56 p.
Keyword [en]
Heat pump, ground source heat pump, Energy analysis, energy system, heating system
National Category
Energy Engineering
URN: urn:nbn:se:kth:diva-151419OAI: diva2:748622
Educational program
Master of Science - Sustainable Energy Engineering
2014-03-21, Brinellvägen 68, 100 44 Stockholm., Stockholm, 13:00 (English)
Available from: 2014-10-07 Created: 2014-09-20 Last updated: 2014-10-07Bibliographically approved

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Garnier Michel EGI-2014-036MSC(5279 kB)92 downloads
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Applied Thermodynamics and Refrigeration
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