4.55 Figure P4-55 shows a solar

collector panel embedded in a

roof. The panel, which has a

surface area of 24 ft², receives

energy from the sun at a rate of

200 Btu/h per ft² of collector

surface. Twenty-five percent of

the incoming energy is lost to

the surroundings. The

remaining energy is used to heat

domestic hot water from 90 to

120°F. The water passes through

the solar collector with a

negligible pressure drop.

Neglecting kinetic and potential

effects, determine at steady state

how many gallons of water at

120°F the collector generates

per hour.