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Sol-air temperature and daylight illuminance profiles for the UKCP09 data sets.

Tham, Yieng Wei and Muneer, Tariq (2011) Sol-air temperature and daylight illuminance profiles for the UKCP09 data sets. Building and Environment, 46 (6). pp. 1243-1250.

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Abstract/Description

To provide information on climate change, the UK Climate Impacts Programme (UKCIP) provided the latest UKCP09data to a resolution of 5 km square grids for the UK. Those datasets were used in this study along with the historical measured data for two locations—Bracknell (London) and Edinburgh—to critically analyse the likely changes that may occur in the sol-airtemperature and daylightilluminance profiles. These parameters have an important bearing on the design and function of buildings and building services.

Drastic increment of sol-airtemperature was found for the projected datasets. An increase of as much as 20.1 °C of sol-airtemperature for dark-coloured surface was found for Edinburgh and 13.3 °C for Bracknell. These increments may be due to the compound effect of change in the constituent variables that are used to calculate sol-airtemperature, i.e. solar radiation, wind speed and dry bulb temperature. A sensitivity test was carried out to see the effect of each variable on sol-airtemperature.

An increasing trend of daylight was also found in the datasets. This is attributed to the changing clarity of the sky condition. The predictions indicate a radical change in the characteristics of solar climate, i.e. from the present diffuse fraction of total irradiation of 0.37 which indicates mild turbidity to a drop of 0.13 indicating clear skies with exceptionally low turbidity.

Item Type: Article
Electronic ISSN: 0360-1323
Uncontrolled Keywords: Sol-air temperature; Daylight illuminance; Solar radiation; Climate change;
University Divisions/Research Centres: Edinburgh Napier University, Transport Research Institute
Dewey Decimal Subjects: 600 Technology > 620 Engineering > 621 Electronic & mechanical engineering > 621.4 Heat engines > 621.47 Solar-energy enineering
Library of Congress Subjects: T Technology > TD Environmental technology. Sanitary engineering
Item ID: 5123
Depositing User: Computing Research
Date Deposited: 12 Apr 2012 15:44
Last Modified: 05 Dec 2012 15:49
URI: http://researchrepository.napier.ac.uk/id/eprint/5123

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