Frequency Distributions of Daily Ambient Temperatures Through Generalized Parameters

[+] Author and Article Information
V. V. Satyamurty, K. Sarath Babu

Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur-721302, India

J. Sol. Energy Eng 121(3), 176-183 (Aug 01, 1999) (8 pages) doi:10.1115/1.2888430 History: Received January 01, 1999; Revised August 01, 1999; Online February 14, 2008


Studies on frequency distributions of ambient temperature available in the literature are limited and are developed assuming that the distributions are symmetric about its average value. The present article examines the suitability of a new parameter, aˆ, and a variable, Taˆ to depict generalized distributions. aˆ is a normalized monthly average daily ambient temperature, while Taˆ is a normalized daily ambient temperature. They comprise maximum and minimum ambient temperatures (Ta,max and Ta,min ), in addition to monthly average daily ambient temperature, a , and daily ambient temperature, Ta . Correlations have been developed to predict Ta,max and Ta,min needed, in the absence of data. The distributions, developed in terms of Taˆ and aˆ have been suitably represented and tested over 269 locations, latitudes ranging from 8°N to 64°N. The daily ambient temperature values have been predicted within a %rms difference and standard deviations of 0.43% (when Ta ’s are in K) and 1.19 K with the expressions developed in the present study.

Copyright © 1999 by The American Society of Mechanical Engineers
Topics: Temperature
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