Iowa State University Digital Repository @ Iowa State University Agricultural and Biosystems Engineering Publications and Papers Agricultural and Biosystems Engineering 1-1-2009 Chapter 1: Basic Principles of the ermal Environment and Livestock Energetics James A. DeShazer G. LeRoy Hahn Hongwei Xin Iowa State University, hxin@iastate.edu Follow this and additional works at: hp://lib.dr.iastate.edu/abe_eng_pubs Part of the Agriculture Commons , and the Bioresource and Agricultural Engineering Commons e complete bibliographic information for this item can be found at hp://lib.dr.iastate.edu/ abe_eng_pubs/234. For information on how to cite this item, please visit hp://lib.dr.iastate.edu/ howtocite.html. is Article is brought to you for free and open access by the Agricultural and Biosystems Engineering at Digital Repository @ Iowa State University. It has been accepted for inclusion in Agricultural and Biosystems Engineering Publications and Papers by an authorized administrator of Digital Repository @ Iowa State University. For more information, please contact hinefuku@iastate.edu.