1) The water flow rate for a particular sprinkler is 21 gpm. The water must be p
ID: 2865337 • Letter: 1
Question
1) The water flow rate for a particular sprinkler is 21 gpm. The water must be projected at least 25 feet in radius. The sprinkler is mounted 11 feet above the ground and is aimed at an angle of 28 degrees above the horiztonal. With what velocity must the water leave the sprinkler? What diameter (inches) should the opening be to achieve this velocity?
Water Velocity = Number ft/s
Diameter Opening = Number inches
2) A food processing plant is installing a new freezer that has a CoP of 3.8. The freezer is rated at an input power of 86 hp. At what rate (Btu/hr) should this freezer be able to remove heat from the products inside the freezer?
Qout Rate = Btu/hr
Explanation / Answer
2)
Win = 86 hp = 218821.3 Btu/h
CoP = 3.8
Qhot - Qcold = Win
CoP = Qcold/Win = 3.8
Qcold = 3.8 * 218821.3 Btu/h = 831520.9 Btu/h
Qhot = Win + Qcold = 1050342.2 Btu/h
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