Compare the rate of heat loss from a human body with the typical energy intake from consumption
Question:
Compare the rate of heat loss from a human body with the typical energy intake from consumption of food (1033 kcal/day). Model the body as a vertical cylinder 30 cm in diameter and 1.8 m high in still air. Assume the skin temperature is 2?C below normal body temperature. Neglect radiation, transpiration cooling (sweating), and the effects of clothing.GIVENHuman body idealized as a vertical cylinder in still airDiameter (D) = 30 cm = 0.3 mHeight (L) = 1.8 mSkin temperature (Ts) = 2?C below normal body temperature (37?C) = 35?CASSUMPTIONSSteady stateRadiation, transpiration cooling, and clothing effects are negligibleAmbient air temperature (T??) = 20?CHeat loss from the top of the cylinder is small compared to that from thesides
Step by Step Answer:
Principles of heat transfer
ISBN: 978-0495667704
7th Edition
Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn