The air conditioning system in a new Chevrolet Van for use in desert climates is to be
Question:
The air conditioning system in a new Chevrolet Van for use in desert climates is to be sized. The system is to maintain an interior temperature of 20?C when the van travels at 100 km/h through dry air at 30?C at night. If the top of the van can be idealized as a flat plate 6 m long and 2 m wide, and the sides as flat plates 3 m tall and 6 m long, estimate the rate of which heat must be removed from the interior to maintain the specified comfort conditions. Assume the heat transfer coefficient on the inside of the van wall is 10 W/(m2 K).GIVENA Chevrolet van traveling through dry airInterior van temperature (Ti) = 20?CVelocity (U??) = 100 km/hAir temperature (T??) = 30?CTop dimensions = 6 m long, 2 m wideSide dimensions = 6 m long, 3 m wideASSUMPTIONSHeat gain from the front, back, and bottom of the van is negligibleRadiative heat transfer is negligibleVan walls are insulatedThermal resistance of the sheet metal van walls is negligibleThe interior heat transfer coefficient (hc ) = 10 W/(m2K)
Transcribed Image Text:
Alr U.- 100 km/h T- 30°C
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The thermal circuit for the van walls and top is shown below The ...View the full answer
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