Problem 10: Outside Air and Recirculated Air supplied without Reheating An engineer has been given the following data on a conditioned room: Sensible Heat Gain Latent Heat Gain Supply Air Outdoor Air Desired Room Condition 30 kW 15 kW 18 °C 35 °C DB and 24 °C WB 27 °C DB and 50% RH For ventilation, 15% is outdoor air, with the balance of the air requirement being recirculated from the room conditioned with some portion being by-passed around the cooling coil. There is no reheater; the desired room state is attained by the by-passing of air. It is found that the apparatus DP temperature of the coil is 10 °C. Find the following: a.) tons of refrigeration; and

Elements Of Electromagnetics
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Subject: Mechanical Engineering

Problem 10: Outside Air and Recirculated Air supplied without Reheating
An engineer has been given the following data on a conditioned room:
Sensible Heat Gain
Latent Heat Gain
Supply Air
Outdoor Air
Desired Room Condition
30 kW
15 kW
a.) tons of refrigeration; and
b.) mass flow rate of by-passed air
18 °C
35 °C DB and 24 °C WB
27 °C DB and 50% RH
For ventilation, 15% is outdoor air, with the balance of the air requirement being
recirculated from the room conditioned with some portion being by-passed around the cooling
coil. There is no reheater; the desired room state is attained by the by-passing of air. It is found
that the apparatus DP temperature of the coil is 10 °C. Find the following:
Transcribed Image Text:Problem 10: Outside Air and Recirculated Air supplied without Reheating An engineer has been given the following data on a conditioned room: Sensible Heat Gain Latent Heat Gain Supply Air Outdoor Air Desired Room Condition 30 kW 15 kW a.) tons of refrigeration; and b.) mass flow rate of by-passed air 18 °C 35 °C DB and 24 °C WB 27 °C DB and 50% RH For ventilation, 15% is outdoor air, with the balance of the air requirement being recirculated from the room conditioned with some portion being by-passed around the cooling coil. There is no reheater; the desired room state is attained by the by-passing of air. It is found that the apparatus DP temperature of the coil is 10 °C. Find the following:
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