. An industrial warehouse of 100,000 ft floor area has a concrete floor about 1 ft...

 

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. An industrial warehouse of 100,000 ft floor area has a concrete floor about 1 ft thick with 24-ft high walls and ceiling whose thermal resistance is about that in the text example dealing with "Overall Thermal Resistance of a Building". The ventilation amounts to about 1 air change every three hours, the interior temperature is 70F, and the outdoor temperature is 40F. Estimate the following numerical values: (a) Building overall heat loss coefficient, VA + mCp,a (b) Building heat capacitance, C = mcp (c) Approximate temperature change of the building that would enable heat stored in the building and its contents (floor loading approximately 200 Ib;/ft) to supply the heat loss of the building in an 8- hr period (d) Building time constant [Answer: (a) 1.8 x 104 Btu/hr-F, (b) 4 x 106 Btu/F, (c) 4T = 1F]. . An industrial warehouse of 100,000 ft floor area has a concrete floor about 1 ft thick with 24-ft high walls and ceiling whose thermal resistance is about that in the text example dealing with "Overall Thermal Resistance of a Building". The ventilation amounts to about 1 air change every three hours, the interior temperature is 70F, and the outdoor temperature is 40F. Estimate the following numerical values: (a) Building overall heat loss coefficient, VA + mCp,a (b) Building heat capacitance, C = mcp (c) Approximate temperature change of the building that would enable heat stored in the building and its contents (floor loading approximately 200 Ib;/ft) to supply the heat loss of the building in an 8- hr period (d) Building time constant [Answer: (a) 1.8 x 104 Btu/hr-F, (b) 4 x 106 Btu/F, (c) 4T = 1F].

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