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Unformatted text preview: 2 ⋅ K) air and surrounds temperature: 280 K air convective heat transfer coefficient of water: 2 W/(m 2 ⋅ K) air gap convective heat transfer coefficient of water: 0.8 W/(m 2 ⋅ K) 3. A decision is to be made as to what solar collector to purchase for an application. An analysis of both collectors yields: Collector Type Required Area No Cover Glass 75 m 2 Evacuated 55 m 2 If the no cover glass collectors cost $63 per m 2 , determine the unit cost of the evacuated collector that will make it competitive with the no cover glass collector. ME 417 Design of Alternative Energy Systems 2 4. Determine the area required of a 100 m2 Mono-Si PV module operating under the following conditions: Solar Radiation Flux: 200 W/m 2 Electric Power: 0.5 kW Ambient Temperature: 20 ° C Latitude: 40 ° Declination Angle: 8 ° Tilt Angle: 35 ° Clearness Index: 0.5...
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- Spring '07
- Heat, convective heat transfer