Vertical temperature gradients in apartments with hydronic radiator heating
Dahlblom, Mats LU ; Nordquist, Birgitta LU ; Wallentén, Petter LU
; Harderup, Lars-Erik
LU
and Jensen, Lars
LU
(2019)
Cold Climate HVAC 2018
p.575-585
- Abstract
- 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... (More)
- 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. (Less)
- Abstract (Swedish)
- 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... (More)
- 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. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/93dded9e-3cf5-4c2a-9379-f05ec3b21576
- author
- Dahlblom, Mats
LU
; Nordquist, Birgitta
LU
; Wallentén, Petter
LU
; Harderup, Lars-Erik
LU
and Jensen, Lars
LU
- organization
- alternative title
- Vertikala temperaturgradienter i lägenheter med vattenburen radiatorvärme
- publishing date
- 2019
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Cold Climate HVAC 2018 : Sustainable Buildings in Cold Climates - Sustainable Buildings in Cold Climates
- editor
- Johansson, Dennis ; Bagge, Hans and Wahlström, Åsa
- pages
- 11 pages
- publisher
- Springer
- conference name
- Cold Climate HVAC 2018
- conference location
- Kiruna, Sweden
- conference dates
- 2018-03-12 - 2018-03-15
- ISBN
- 978-3-030-00662-4
- 978-3-030-00661-7
- DOI
- 10.1007/978-3-030-00662-4_48
- language
- English
- LU publication?
- yes
- id
- 93dded9e-3cf5-4c2a-9379-f05ec3b21576
- date added to LUP
- 2019-11-05 13:35:48
- date last changed
- 2019-11-11 10:36:55
@inproceedings{93dded9e-3cf5-4c2a-9379-f05ec3b21576,
abstract = {{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.}},
author = {{Dahlblom, Mats and Nordquist, Birgitta and Wallentén, Petter and Harderup, Lars-Erik and Jensen, Lars}},
booktitle = {{Cold Climate HVAC 2018 : Sustainable Buildings in Cold Climates}},
editor = {{Johansson, Dennis and Bagge, Hans and Wahlström, Åsa}},
isbn = {{978-3-030-00662-4}},
language = {{eng}},
pages = {{575--585}},
publisher = {{Springer}},
title = {{Vertical temperature gradients in apartments with hydronic radiator heating}},
url = {{http://dx.doi.org/10.1007/978-3-030-00662-4_48}},
doi = {{10.1007/978-3-030-00662-4_48}},
year = {{2019}},
}