 Performance analysis of an integrated UFAD and radiant hydronic slab systemPaul Raftery, Kwang Ho Lee, Tom Webster and Fred Bauman Applied Energy, 2012, vol. 90, issue 1, 250-257 Abstract: In this paper, an EnergyPlus model was used to simulate the operation of a novel integrated HVAC system. This system combines an underfloor air distribution system with a cooled radiant ceiling slab. A cooling tower supplies water to pre-cool the structural slabs during the night and early morning period. The paper compares the performance of this system to both a typical overhead system and a typical UFAD system in the cooling season for the Sacramento, California climate. When compared to the overhead system, the integrated UFAD/Radiant system shows a 22–23% reduction in total energy consumption during the peak cooling months (June to August) and a 31% reduction in peak hourly electricity demand. When compared to the UFAD system, these reductions are 21–22% and 24% respectively. An investigation of the simulation results showed that the integrated UFAD/Radiant system also improves occupant thermal comfort and reduces thermal decay issues in the underfloor plenum. Keywords: Underfloor air distribution; Radiant cooling; Hydronic slab; Thermally activated building systems; Energy performance; EnergyPlus (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:90:y:2012:i:1:p:250-257 Ordering information: This journal article can be ordered from DOI: 10.1016/j.apenergy.2011.02.014 Access Statistics for this article Applied Energy is currently edited by J. Yan More articles in Applied Energy from Elsevier |
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