Experimental testing of cooling internal loads with a radiant wall

Joaquim Romaní, Luisa F. Cabeza, Gabriel Pérez, Anna Laura Pisello and Alvaro de Gracia

Renewable Energy, 2018, vol. 116, issue PA, 1-8

Abstract: Thermally activated building systems (TABS) consist of pipes or ducts embedded in the building structure. This is a well-known technology for its capability to reduce energy use for cooling buildings. Additionally, TABS help integrating renewable energies, such as free-cooling with ground heat exchangers (GHE). However, TABS cooling load is sensitive to the internal load, and the use of GHE for free-cooling is limited to low energy buildings. In a previously published research, a radiant wall cubicle without internal gains demonstrated to achieve significant energy savings. However, the current research showed that under domestic and office scheduled internal gains equivalent to 42 W m−2 the radiant cubicle increased its energy consumption for cooling more than the reference cubicle with air-to-air heat pumps. As a result, the radiant cubicle used around 20% more energy than the reference at air temperature set-point 24 °C but saved around 20% compared to the reference at 26 °C. Despite this, the radiant wall could still reduce the cooling cost through peak load shifting even though it showed to consume more energy than a conventional HP.

Keywords: Thermally activated building systems (TABS); Radiant walls; Radiant cooling; Internal loads; Ground heat exchanger (GHE); Energy efficiency in buildings (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:116:y:2018:i:pa:p:1-8

DOI: 10.1016/j.renene.2017.09.051

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