An air conditioning plant supplies air to a room at a rate of 1.26 kg/s, the supply air being made up of equal parts by weight of outdoor and recirculated air. The mixed air passes through a cooler coil fitted with a by-pass duct, face-and-by-pass dampers being used for humidity control. The air then passes through an after-heater and supply fan. In a test on the plant, the following conditions were measured: a. Make neat sketches showing the plant arrangement and the psychrometric cycle and identify corresponding points on both diagrams. b. Show on the plant arrangement diagram the controls required to maintain the desired room condition. c. Ignoring any temperature rise through the supply fan calculate the mass flowrate of air through the cooler coil, and the cooler coil and heater battery loads, in kW.
An air conditioning plant supplies air to a room at a rate of 1.26 kg/s, the supply air being made up of equal parts by weight of outdoor and recirculated air. The mixed air passes through a cooler coil fitted with a by-pass duct, face-and-by-pass dampers being used for humidity control. The air then passes through an after-heater and supply fan. In a test on the plant, the following conditions were measured: a. Make neat sketches showing the plant arrangement and the psychrometric cycle and identify corresponding points on both diagrams. b. Show on the plant arrangement diagram the controls required to maintain the desired room condition. c. Ignoring any temperature rise through the supply fan calculate the mass flowrate of air through the cooler coil, and the cooler coil and heater battery loads, in kW.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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An air conditioning plant supplies air to a room at a rate of 1.26 kg/s, the supply air being made up of equal parts by weight of outdoor and recirculated air. The mixed air passes through a cooler coil fitted with a by-pass duct, face-and-by-pass dampers being used for humidity control. The air then passes through an after-heater and supply fan. In a test on the plant, the following conditions were measured:
a. Make neat sketches showing the plant arrangement and the psychrometric cycle and identify corresponding points on both diagrams.
b. Show on the plant arrangement diagram the controls required to maintain the desired room condition.
c. Ignoring any temperature rise through the supply fan calculate the mass flowrate of air through the cooler coil, and the cooler coil and heater battery loads, in kW.
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