Physics, asked by rupalinarula, 1 month ago

I
In a solar flat plate heater, some of the heat is absorbed by a fluid while the remaining hea
is lost by convection, bottom surface is insulated. The fraction absorbed is known a
efficiency of the collector. If the flux incident has a value of 0 N/mrat collection
temperature of 60°C. Determine the collector efficiency when it is exposed to surrounding
at 32°C with convection coefficient of 15 W/m°, K. Also find the collector efficiency, i
collection temperature is 45°C​

Answers

Answered by Anonymous
10

[Explanation:]

Solar collectors are the key component of active solar-heating

systems. They gather the sun's energy, transform its radiation

into heat, then transfer that heat to a fluid (usually water or air).

The solar thermal energy can be used in solar water-heating

systems, solar pool heaters, and solar space-heating systems.

There are a large number of solar collector designs that have

shown to be functional. These designs are classified in two

general types of solar collectors:

 Flat-plate collectors – the absorbing surface is

approximately as large as the overall collector area that

intercepts the sun's rays.

 Concentrating collectors – large areas of mirrors or

lenses focus the sunlight onto a smaller absorber.

t inconvenient because of the

difficulty in defining the collector average temperature. It is

convenient to define a quantity that relates the actual useful

energy gain of a collector to the useful gain if the whole

collector surface were at the fluid inlet temperature. This

quantity is known as “the collector heat removal factor

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