Substances Solids Concrete (Granite) Specific heat (c) J/kg C 840 kcal/kg.C 0.20 Glass 840 0.20 Human Body Ice (average) Liquids 3500 0.83 2090 0.50 Water 4186 1.000 Gases Air (Dry) Steam (100°C) 721 (1015) | 0.172 (0.242) 1520 (2020)| 0.363(0.482) ©theexpertta.com
Suppose a person inhales and exhales 2.25 L of 37.0°C air, evaporating 4.2 × 10-2 g of water from the lungs and breathing passages with each breath. 101.4 J of
a) What is the rate of heat transfer, in watts, if the person is breathing at a moderate rate of 18.0 breaths per minute?
b) If the inhaled air had a temperature of 20.0°C, what is the rate of heat transfer, in watts, for warming the air to the body temperature of 37ºC? You may assume the temperature inside a human body is a constant 37.0°C, and the density of air at this temperature is 1.20 kg/m3.
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