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Homework No 5 2009

# Homework No 5 2009 - Homework No 5 EML 6417 and 4930 Due 5...

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8 H /C Blower Conditioned Space s upply air R ock bed s torage s olar air c ollector 1 2 3 4 aux. heat source for backup 5 Homework No. 5 EML 6417 and 4930 Due October 30, 2009 1. Consider the solar air heating system shown above with the basic modes of operation discussed during the last lecture. Given the following data, complete the design of this system as indicated below: Jacksonville, Florida Latitude 30.5 N Lat Longitude 81.7 deg Winter design temperature 29 deg F dry bulb Winter coincident web bulb 24.4 deg F Average ground reflectance 0.2 Indoor design conditions: 75 deg F db and 50% relative humidity Specify a supply air temperature of 100 deg F for heating Design heating load: 80,000 btu/h (heat loss from conditioned space) Assume January is the design month. Reference temperature = 100 deg C Average January temperature = 15.4 deg C From Appendix 2.3b Average daily solar radiation on a horizontal surface = Hh=10450 kJ/m^2-day From Table A2.2 for latitude 30 deg, Ho,h = 21099.6kJ/m^2 day monthly average daily extraterrestrial insolation on the horizontal.

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Homework No 5 2009 - Homework No 5 EML 6417 and 4930 Due 5...

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