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A quick and accurate estimation of heat losses from a cow

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Main Authors: Khan, Zahid A., Irfan Anjum, Badruddin, Ghulam, Abdul Quadir, Prof. Dr., Seetharamu, Kankanhally N.
Other Authors: zakhanusm@yahoo.com
Format: Article
Language:English
Published: Elsevier Ltd. 2014
Subjects:
Heat convection
Iterative methods
Mass transfer
Mathematical models
Parameter estimation
Regression analysis
Online Access:http://dspace.unimap.edu.my:80/dspace/handle/123456789/33813
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spelling my.unimap-338132014-04-18T12:53:06Z A quick and accurate estimation of heat losses from a cow Khan, Zahid A. Irfan Anjum, Badruddin Ghulam, Abdul Quadir, Prof. Dr. Seetharamu, Kankanhally N. zakhanusm@yahoo.com gaquadir@unimap.edu.my Heat convection Iterative methods Mass transfer Mathematical models Parameter estimation Regression analysis Link to publisher's homepage at http://www.sciencedirect.com/ The mathematical model available in the literature to calculate the skin temperature required to determine the heat loss from the body of an average cow under different environmental and skin-wetness conditions is complex and iterative. This paper presents a simplified methodology, which can be used for quick and accurate estimation of the skin temperature as well as heat loss without a detailed understanding of heat and mass transfer and fluid flow concepts. Multiple linear regression (MLR) is first used to predict the skin temperature which can subsequently be used to compute various forms of heat losses from the body of the cow. It is found that the skin temperature predicted by the correlation obtained from MLR is accurate except for a few combinations of environmental and skin-wetness conditions where in the maximum error is found to be 8·9%. However, skin temperature of a cow can be more accurately calculated using a set of simple linear relationships proposed in this paper. In addition to this, simple correlations are also presented for the calculation of convective heat and mass transfer coefficients, boundary layer thickness, and latent heat of vapourisation. The use of the proposed correlations for calculating skin temperature is illustrated through an example. It is found that the skin temperatures, and total heat losses under different environmental and skin-wetness conditions predicted by the proposed methodology agree very closely with those available in the literature. 2014-04-18T12:53:06Z 2014-04-18T12:53:06Z 2006 Article Biosystems Engineering, vol. 93(3), 2006, pages 313-323 1537-5110 http://dspace.unimap.edu.my:80/dspace/handle/123456789/33813 http://www.sciencedirect.com/science/article/pii/S1537511005002606 http://dx.doi.org/10.1016/j.biosystemseng.2005.11.011 en Elsevier Ltd.
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Heat convection
Iterative methods
Mass transfer
Mathematical models
Parameter estimation
Regression analysis
spellingShingle Heat convection
Iterative methods
Mass transfer
Mathematical models
Parameter estimation
Regression analysis
Khan, Zahid A.
Irfan Anjum, Badruddin
Ghulam, Abdul Quadir, Prof. Dr.
Seetharamu, Kankanhally N.
A quick and accurate estimation of heat losses from a cow
description Link to publisher's homepage at http://www.sciencedirect.com/
author2 zakhanusm@yahoo.com
author_facet zakhanusm@yahoo.com
Khan, Zahid A.
Irfan Anjum, Badruddin
Ghulam, Abdul Quadir, Prof. Dr.
Seetharamu, Kankanhally N.
format Article
author Khan, Zahid A.
Irfan Anjum, Badruddin
Ghulam, Abdul Quadir, Prof. Dr.
Seetharamu, Kankanhally N.
author_sort Khan, Zahid A.
title A quick and accurate estimation of heat losses from a cow
title_short A quick and accurate estimation of heat losses from a cow
title_full A quick and accurate estimation of heat losses from a cow
title_fullStr A quick and accurate estimation of heat losses from a cow
title_full_unstemmed A quick and accurate estimation of heat losses from a cow
title_sort quick and accurate estimation of heat losses from a cow
publisher Elsevier Ltd.
publishDate 2014
url http://dspace.unimap.edu.my:80/dspace/handle/123456789/33813
_version_ 1643797295846653952
score 13.214268

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