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# A solar flux of 700 W/m2 is incident on a flat-platesolar collector used to heat water The area of the collector is 3m2 and 90% of the solarradiation passes through the

A solar flux of 700 W/m2 is incident on a flat-platesolar collector used to heat water. The area of the collector is 3m2, and 90% of the solarradiation passes through thecover glass and is absorbed by the absorber plate. The remaining10% is deflected away from the collector. Water flows through thetubepassages on the backside of the absorber plate and is heatedfrom an inlet temperature Ti to an outlet temperatureTo . The cover glass, operatingat a temperature of30oC, has an emissivity of 0.94 and experiencesradiation exchange with the sky at -10oC. The convectioncoefficient between thecover glass and the ambient air at25oC is 10 W/m2K.

---> How would you perform an overall energy balance on thecollector to get an expression for the rate at which useful heat iscollected per unit area(heat flux).What would the value of thisbe? (Call it qu")

May 05 2020 View more View Less