Estimate the rate of heat loss by breathing

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Estimate the rate of heat loss by breathing

Consider a cold winter day with air temperature of 5C and relative humidity of about 20% (moisture content 0.001g H2O/g dry air). A person waiting at a bus stop inhales at an average rate of 7g dry air/min and exhales air saturated with water at body temperature (37C) and 1 atm. The heat capacity of dry air is 1.05J/ (g*C). Estimate the rate of heat loss by breathing in kcal/hr

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