A conditioned space receives warm, humidified air during winter air conditioning in order to maintain 20 °C and 30 percent relative humidity. The space experiences an infiltration rate of 0.3 kg/s of outdoor air and an additional sensible-heat loss of 25 kW. The outdoor air is saturated at a temperature of -20 °C (see Table A-2 of the prescribed book). If conditioned air is supplied at 40 °C dry-bulb, what must be the wet-bulb temperature of supply air be in order to maintain the space conditions?

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