IME 320-W10 - Climate Heat Cold Effects

IME 320-W10 - Climate Heat Cold Effects - Industrial and...

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Industrial and Manufacturing Engineering Department California State Polytechnic University – San Luis Obispo IME 320 – Human Factors and Technology 1. Climate (Heat and Cold Conditions) The human body is cooled by heat exchange. The methods of heat exchange are: 1. Conduction – heat transfer by direct contact with a solid or liquid, including air. 2. Convection – the transfer of heat by currents of air. 3. Radiation – the transmission of heat between objects by electromagnetic radiation. This is the way the sun heats the earth and our bodies. 4. Evaporation – perspiration (sweat) is heated by the skin and is transformed into water vapor which is carried from the skin by currents of air. Heat illness 1. Heat rash – areas of the skin break out in small red, blisterlike, raised bumps caused by plugging of sweat gland ducts, retention of sweat and inflammation. 2. Heat cramps – cramps occur during or hours after working in a hot environment and are associated with restricted salt intake and profuse
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This note was uploaded on 06/15/2010 for the course IME 320 taught by Professor Mcfarland during the Winter '10 term at Cal Poly.

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IME 320-W10 - Climate Heat Cold Effects - Industrial and...

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