期刊
APPLIED ENERGY
卷 169, 期 -, 页码 469-480出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2016.02.031
关键词
SPD; Vacuum; Electrochromic; Smart window; Heat transfer coefficients; Test cell
资金
- Higher Education Authority, Ireland
A switchable suspended particle device (SPD) evacuated (vacuum) glazing has low inherent heat loss and can control solar heat gain by changing its transparency. The thermal performance of combined SPD-vacuum glazing has been investigated using a test cell. In this work two different combination of SPD-vacuum glazing was evaluated. In the first combination, SPD glazing was facing the outside ambient environment and vacuum glazing was facing the indoor test cell environment (SPD-vacuum). In the second combination, SPD glazing was facing the indoor test cell environment and vacuum glazing was facing the outdoor ambient environment (Vacuum-SPD). Variation of the SPD glazing position in a combined SPD-vacuum glazing had little impact on either the internal test cell temperature or the glazing surface temperature. This combined glazing system achieved a dynamic transmission range from 2% (opaque state) to 38% (transparent state). Low overall heat transfer coefficients between 1.00 W/m(2) K to 1.16 W/m(2) K were found for this combined glazing. Dynamic solar heat gain coefficient was possible using this glazing, which varied from 0.045 to 0.27. This type of combined glazing system is suitable for summer and winter both conditions. (C) 2016 Elsevier Ltd. All rights reserved.
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