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Low-Temperature Baseboard Heaters in Built Environments

Technical Report:

Abstract

The European Union has adopted a plan to decrease 20 % of total energy consumption through improved energy efficiency by 2020. One way of achieving this challenging goal may be to use efficient water-based heating systems supplied by heat pumps or other sustainable systems. The goal of this research was to analyze and improve the thermal performance of water-based baseboard heaters at low-temperature water supply. Both numerical (CFD) and analytical simulations were used to investigate the heat efficiency of the system. An additional objective of this work was to ensure that the indoor thermal comfort was satisfied in spaces served by such a low-temperature heating system. Analyses showed that it was fully possible to cover both transmission and ventilation heat losses using baseboard heaters supplied by 45 deg C water flow. The conventional baseboards, however, showed problems in suppressing the cold air down-flow created by 2.0 m high glazing and an outdoor temperature of -12 deg C. The draught discomfort at ankle level was slightly above the upper limit recommended by international and national standards. On the other hand, thermal baseboards with integrated ventilation air supply showed better ability to neutralize cold downdraught at the same height and conditions. Calculations  More>>
Authors:
Publication Date:
Oct 15, 2010
Product Type:
Technical Report
Report Number:
TRITA-STH-2010-4
Resource Relation:
Other Information: Thesis or Dissertation; TH: Licentiate thesis (TeknL); 22 refs., 3 figs., 1 tab.
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; BASEBOARD HEATING; SPACE HEATING; THERMAL COMFORT; HEAT TRANSFER; FLUID MECHANICS; COMPUTERIZED SIMULATION; HEAT PUMPS
OSTI ID:
1005374
Research Organizations:
Royal Inst. of Technology, Stockholm (Sweden). School of Technology and Health, Div. of Fluid and Climate Technology
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Other: ISSN 1653-3836; ISBN 978-91-7415-744-4; TRN: SE1107036
Availability:
Available from URI: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-25725
Submitting Site:
SWD
Size:
17 p. pages
Announcement Date:
Feb 28, 2011

Technical Report:

Citation Formats

Ploskic, Adnan. Low-Temperature Baseboard Heaters in Built Environments. Sweden: N. p., 2010. Web.
Ploskic, Adnan. Low-Temperature Baseboard Heaters in Built Environments. Sweden.
Ploskic, Adnan. 2010. "Low-Temperature Baseboard Heaters in Built Environments." Sweden.
@misc{etde_1005374,
title = {Low-Temperature Baseboard Heaters in Built Environments}
author = {Ploskic, Adnan}
abstractNote = {The European Union has adopted a plan to decrease 20 % of total energy consumption through improved energy efficiency by 2020. One way of achieving this challenging goal may be to use efficient water-based heating systems supplied by heat pumps or other sustainable systems. The goal of this research was to analyze and improve the thermal performance of water-based baseboard heaters at low-temperature water supply. Both numerical (CFD) and analytical simulations were used to investigate the heat efficiency of the system. An additional objective of this work was to ensure that the indoor thermal comfort was satisfied in spaces served by such a low-temperature heating system. Analyses showed that it was fully possible to cover both transmission and ventilation heat losses using baseboard heaters supplied by 45 deg C water flow. The conventional baseboards, however, showed problems in suppressing the cold air down-flow created by 2.0 m high glazing and an outdoor temperature of -12 deg C. The draught discomfort at ankle level was slightly above the upper limit recommended by international and national standards. On the other hand, thermal baseboards with integrated ventilation air supply showed better ability to neutralize cold downdraught at the same height and conditions. Calculations also showed that the heat output from the integrated system with one ventilation inlet was approximately twice as high as that of the conventional one. The general conclusion from this work was that low temperature baseboards, especially with integrated ventilation air supply, are an efficient heating system and able to be combined with devices that utilize the low-quality sustainable energy sources such as heat pumps}
place = {Sweden}
year = {2010}
month = {Oct}
}