Vertical temperature gradients in apartments with hydronic radiator heating

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review


A vertical temperature stratification normally exists in rooms during the heat-ing season in cold climates. An expression of the gradient in apartments heated by hydronic radiator heating systems with exhaust ventilation has ear-lier been developed assuming a dependency of the outdoor temperature. The expression was used by a public real estate owner when re-calculating meas-ured indoor temperature at 2.1 m above floor to 1.2 m above floor represent-ing the occupancy zone and used for individual metering and billing of space heating cost. To validate the suggested expression temperature measurements have been made at four heights in living rooms in apartments built in the 70’s. The heights includes 0.0, 0.1, 1.1 and 1.7 m above floor. The theoreti-cal expression has been compared to the full-scale measurements and in general the expression overestimates the vertical temperature gradient. The measured gradients are generally very low. The thermal comfort in the aspect of vertical temperature gradient is good for the studied period.
Translated title of the contributionVertikala temperaturgradienter i lägenheter med vattenburen radiatorvärme
Original languageEnglish
Title of host publicationCold Climate HVAC 2018
Subtitle of host publicationSustainable Buildings in Cold Climates
EditorsDennis Johansson, Hans Bagge, Åsa Wahlström
Number of pages11
ISBN (Electronic)978-3-030-00662-4
ISBN (Print)978-3-030-00661-7
Publication statusPublished - 2019
EventCold Climate HVAC 2018: The 9th International Cold Climate Conference, Sustainable new and renovated buildings in cold climates - Kiruna, Sweden
Duration: 2018 Mar 122018 Mar 15


ConferenceCold Climate HVAC 2018
Abbreviated titleCold Climate HVAC 2018

Subject classification (UKÄ)

  • Building Technologies


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