Calculate the amount of heat transfer from a person for a sweat rate of 0.7 liter/hr; the convective heat transfer coefficient and the radiative heat transfer coefficient are 4.5 and 4.7 W/m2-°C, respectively. The skin temperature is 33°C and the room temperature is 22°C. hfg - the enthalpy of vaporization of water is 2430 kJ/kg.