The Effect of Hydronic Balancing on Room Temperature and Heat Pump Efficiency of a Building with Underfloor Heating

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

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The Effect of Hydronic Balancing on Room Temperature and Heat Pump Efficiency of a Building with Underfloor Heating. / Thalfeldt, Martin; Simson, Raimo; Kurnitski, Jarek.

SB16 Tallinn and Helsinki Conference: Build Green and Renovate Deep, 5-7 October 2016, Tallinn and Helsinki. Elsevier, 2016. p. 467-477 (ENERGY PROCEDIA; Vol. 96).

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

Harvard

Thalfeldt, M, Simson, R & Kurnitski, J 2016, The Effect of Hydronic Balancing on Room Temperature and Heat Pump Efficiency of a Building with Underfloor Heating. in SB16 Tallinn and Helsinki Conference: Build Green and Renovate Deep, 5-7 October 2016, Tallinn and Helsinki. ENERGY PROCEDIA, vol. 96, Elsevier, pp. 467-477, Sustainable Built Environment Tallinn and Helsinki Conference, Tallinn, Estonia, 05/10/2016. https://doi.org/10.1016/j.egypro.2016.09.178

APA

Thalfeldt, M., Simson, R., & Kurnitski, J. (2016). The Effect of Hydronic Balancing on Room Temperature and Heat Pump Efficiency of a Building with Underfloor Heating. In SB16 Tallinn and Helsinki Conference: Build Green and Renovate Deep, 5-7 October 2016, Tallinn and Helsinki (pp. 467-477). (ENERGY PROCEDIA; Vol. 96). Elsevier. https://doi.org/10.1016/j.egypro.2016.09.178

Vancouver

Thalfeldt M, Simson R, Kurnitski J. The Effect of Hydronic Balancing on Room Temperature and Heat Pump Efficiency of a Building with Underfloor Heating. In SB16 Tallinn and Helsinki Conference: Build Green and Renovate Deep, 5-7 October 2016, Tallinn and Helsinki. Elsevier. 2016. p. 467-477. (ENERGY PROCEDIA). https://doi.org/10.1016/j.egypro.2016.09.178

Author

Thalfeldt, Martin ; Simson, Raimo ; Kurnitski, Jarek. / The Effect of Hydronic Balancing on Room Temperature and Heat Pump Efficiency of a Building with Underfloor Heating. SB16 Tallinn and Helsinki Conference: Build Green and Renovate Deep, 5-7 October 2016, Tallinn and Helsinki. Elsevier, 2016. pp. 467-477 (ENERGY PROCEDIA).

Bibtex - Download

@inproceedings{09ea77c0624d4d8ca7f25f4c721a1df4,
title = "The Effect of Hydronic Balancing on Room Temperature and Heat Pump Efficiency of a Building with Underfloor Heating",
abstract = "Underfloor heating is a common solution in single-family houses and a suitable solution for nearly zero-energy buildings as a low temperature heating system. According to general practice, the underfloor heating systems should be balanced to assure stable room temperatures and avoid under heating in rooms with higher heat losses. The purpose of the presented study was to analyze the effect of hydronic balancing on the room temperature fluctuations and heat pump performance. The tests were performed at full-scale nearly zero-energy building test facility with under floor heating and an air-to-water heat pump. We measured room and floor temperatures and monitored the heat pump electricity use and heat output. The heat balance of rooms was disturbed with internal gains introduced to several rooms in cycles. The results showed that room temperature fluctuations slightly increased of an unbalanced system, however during all tests, the average temperature fluctuations during night time were below 0.2 °C, so both systems performed well. We identified a negative effect of balancing on the heat pump performance as higher COP was measured in case of an unbalanced system. The results allow to conclude that in the case of studied system with one manifold and relatively small loop length differences the balancing had negligible effect on system performance. However, the topic should be studied further in more unfavorable conditions.",
keywords = "heat pumps, hydronic balancing, indoor climate, underfloor heating",
author = "Martin Thalfeldt and Raimo Simson and Jarek Kurnitski",
year = "2016",
doi = "10.1016/j.egypro.2016.09.178",
language = "English",
series = "ENERGY PROCEDIA",
publisher = "Elsevier",
pages = "467--477",
booktitle = "SB16 Tallinn and Helsinki Conference",

}

RIS - Download

TY - GEN

T1 - The Effect of Hydronic Balancing on Room Temperature and Heat Pump Efficiency of a Building with Underfloor Heating

AU - Thalfeldt, Martin

AU - Simson, Raimo

AU - Kurnitski, Jarek

PY - 2016

Y1 - 2016

N2 - Underfloor heating is a common solution in single-family houses and a suitable solution for nearly zero-energy buildings as a low temperature heating system. According to general practice, the underfloor heating systems should be balanced to assure stable room temperatures and avoid under heating in rooms with higher heat losses. The purpose of the presented study was to analyze the effect of hydronic balancing on the room temperature fluctuations and heat pump performance. The tests were performed at full-scale nearly zero-energy building test facility with under floor heating and an air-to-water heat pump. We measured room and floor temperatures and monitored the heat pump electricity use and heat output. The heat balance of rooms was disturbed with internal gains introduced to several rooms in cycles. The results showed that room temperature fluctuations slightly increased of an unbalanced system, however during all tests, the average temperature fluctuations during night time were below 0.2 °C, so both systems performed well. We identified a negative effect of balancing on the heat pump performance as higher COP was measured in case of an unbalanced system. The results allow to conclude that in the case of studied system with one manifold and relatively small loop length differences the balancing had negligible effect on system performance. However, the topic should be studied further in more unfavorable conditions.

AB - Underfloor heating is a common solution in single-family houses and a suitable solution for nearly zero-energy buildings as a low temperature heating system. According to general practice, the underfloor heating systems should be balanced to assure stable room temperatures and avoid under heating in rooms with higher heat losses. The purpose of the presented study was to analyze the effect of hydronic balancing on the room temperature fluctuations and heat pump performance. The tests were performed at full-scale nearly zero-energy building test facility with under floor heating and an air-to-water heat pump. We measured room and floor temperatures and monitored the heat pump electricity use and heat output. The heat balance of rooms was disturbed with internal gains introduced to several rooms in cycles. The results showed that room temperature fluctuations slightly increased of an unbalanced system, however during all tests, the average temperature fluctuations during night time were below 0.2 °C, so both systems performed well. We identified a negative effect of balancing on the heat pump performance as higher COP was measured in case of an unbalanced system. The results allow to conclude that in the case of studied system with one manifold and relatively small loop length differences the balancing had negligible effect on system performance. However, the topic should be studied further in more unfavorable conditions.

KW - heat pumps

KW - hydronic balancing

KW - indoor climate

KW - underfloor heating

UR - http://www.scopus.com/inward/record.url?scp=85006340056&partnerID=8YFLogxK

U2 - 10.1016/j.egypro.2016.09.178

DO - 10.1016/j.egypro.2016.09.178

M3 - Conference contribution

T3 - ENERGY PROCEDIA

SP - 467

EP - 477

BT - SB16 Tallinn and Helsinki Conference

PB - Elsevier

ER -

ID: 12900442