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Keywords = prefab electric Ondol system

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11 pages, 19852 KB  
Article
Thermal and Energy Performance Assessment of the Prefab Electric Ondol System for Floor Heating in a Residential Building
by Wongeun Lee, Taesub Lim and Daeung Danny Kim
Energies 2020, 13(21), 5723; https://doi.org/10.3390/en13215723 - 2 Nov 2020
Cited by 4 | Viewed by 5317
Abstract
In South Korea, radiant floor heating has been used from old housing to the recently constructed residential buildings, which is called “Ondol”. The Ondol system is generally a water-based system and it uses hot water as a heat medium provided by boilers fueled [...] Read more.
In South Korea, radiant floor heating has been used from old housing to the recently constructed residential buildings, which is called “Ondol”. The Ondol system is generally a water-based system and it uses hot water as a heat medium provided by boilers fueled by natural gas. With great effort to reduce greenhouse gas emissions, electric Ondol panels have been increasingly applied to the recent residential buildings for floor heating. While the prefab electric Ondol panels were developed with the demand for dry construction method, the information about the prefab electric Ondol system is not sufficient. For the present study, the thermal performance of the prefab electric Ondol panels was investigated through field measurement. In addition, the heating energy and economic performance of the electric panel were compared with the conventional Ondol system. As a result, a significant surface temperature difference was observed. Moreover, the heating cost for the prefab electric Ondol system was more expensive than the conventional system, even though a heat loss was observed by the operation of the conventional system. Full article
(This article belongs to the Special Issue Buildings Energy Efficiency and Innovative Energy Systems)
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