Cooling load calculations by thermal response factor method

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Journal titleASHRAE Transactions
Pages17; # of pages: 7
Subjectair conditioning engineering; thermal movements; computers; surface temperature; ambient temperature; Indoor air
AbstractThe authors describe a method for using the computer in calculating the cooling load profile of an air-conditioned room and the temperatures of the room walls. This technique can also be used for calculating the temperature of the room air where the cooling load exceeds the capacity of the air- conditioning system. The building data and the data on ambient conditions are entirely separate, but they must be expressed as a time-series. The dynamic thermal characteristics of the building are expressed by the set of system response factors; the authors describe a method for determining the response factors of the system formed by a room in a companion paper. Data related to ambient conditions include the influence of the time of day, date, latitude and building orientation, as well as the heat transmission and absorption characteristics of the window glass. Calculation of the factors of the system response to ambient conditions requires only the multiplication of all the response factors by the appropriate time-series representing the environment. This operation is a digital method of converting the convolution between the transfer functions of the system and the excitation factors.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number9883
NPARC number20377142
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Record identifier0a164630-2bf0-42b9-a312-695f85ec8a49
Record created2012-07-24
Record modified2016-05-09
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