Annual performance analysis of heat emission in radiator and underfloor heating systems in the European reference room

Karl-Villem Võsa, Andrea Ferrantelli, Jarek Kurnitski

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

2 Citations (Scopus)
136 Downloads (Pure)


In this paper, we investigate the energy usage and emission efficiency of radiator and underfloor heating systems coupled with ON/OFF and PI controls, by performing annual simulations with the IDA ICE software package. Results from measurements carried out in early 2018 at the nZEB test facility near the Tallinn University of Technology are used to calibrate validated emitter and controller models. The calibrated models are then used to assess the energy performance of the systems in a simulation spanning the whole year, using climate data for Strasbourg in the European reference room. The annual simulation is conducted in a specific room with fixed geometry and boundary conditions.

As a novelty value of the present study, we impose a non-standard control strategy based on maintaining a specified operative temperature within the room. A single-valued performance indicator, in the form of an increased air temperature set-point, is accordingly obtained for each emitter configuration to be used in further calculations of hourly, monthly or annual heating energy usage. Such a temperature increment accounts for imperfect control, air stratification within the room and the additional temperature increase that is required for achieving a desired operative temperature.
Original languageEnglish
Title of host publicationClima 2019 Congress
Number of pages8
Publication statusPublished - 13 Aug 2019
MoE publication typeA4 Article in a conference publication
EventREHVA World Congress - Bucharest, Romania
Duration: 26 May 201929 May 2019
Conference number: 13

Publication series

NameE3S web of conferences
PublisherEDP Sciences
ISSN (Print)2555-0403
ISSN (Electronic)2267-1242


ConferenceREHVA World Congress
Abbreviated titleCLIMA

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