Experimental study on heating characteristics and parameter optimization of transpired solar collectors

Dengjia Wang, Qian Gao, Yanfeng Liu, Yingying Wang, Yaowen Chen, Yuan Liu and Jiaping Liu

Applied Energy, 2019, vol. 238, issue C, 534-546

Abstract: It is necessary to improve indoor air quality while meeting the indoor thermal demand of buildings during winter. The transpired solar collector (TSC) is a solar energy integration technology in buildings, which usually consists of a heat collecting plate with infiltration holes, an air layer, an insulation wall, air outlet and other appurtenances. It not only provides preheated fresh air for the indoor environment, but also reduces the cold wind infiltration heat load in winter. In this paper, the heat transfer process of each component of the transpired solar collectors was analyzed comprehensively. Findings on, the heat collection efficiency, heat exchange efficiency indexes and optimized parameters of the transpired solar collectors are presented. Moreover, an integrated and detailed performance test platform for the transpired solar collectors heating characteristics and optimization parameters was developed. Additionally, a comprehensive and multi-condition experimental study was carried out. One important finding is that the non-uniform distribution of infiltration holes at the top and bottom of the transpired solar collectors significantly influence on the preheating effect of fresh air and the overall efficiency of the system. Moreover, an increase in the uniformity of the infiltration holes, increase the heat collection efficiency and heat exchange efficiency by 25% and 10% respectively. Furthermore, the heat collection gain per unit of heat collecting plate area increased by about 34.7 W, and the outlet temperature could be improved by about 15 °C. These findings provide a critical design reference for the high-performance application of the transpired solar collectors in buildings.

Keywords: Transpired solar collectors; Heating characteristics; Parameter optimization; Experimental study (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261919300042
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:238:y:2019:i:c:p:534-546

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2019.01.004

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().