Why is outside air mixed with return air?
What will be an ideal response?
If only outside air was used, then the load on the heating or cooling system would be excessive.
You might also like to view...
Saw cuts for concrete are measured in ____.
A. linear feet or linear meters B. cubic feet or cubic meters C. linear inches D. cubic inches
In a power plant, pipes transporting superheated vapor are very common. Superheated vapor is flowing at a rate of 0.3 kg/s inside a pipe 5 cm in diameter and 10 m in length. The pipe is located in a power plant at 20°C and has a uniform surface temperature of 100°C. If the temperature drop between the inlet and exit of the pipe is 30°C, and the specific heat of the vapor is 2190 J/kg•K, determine the heat transfer coefficient as a result of convection between the pipe surface and the surroundings.
Vitamin A is important in
A. Cellular metabolism B. Eyesight C. Healthy skin D. All of the above E. A and C above
You are setting up a system to detect if fluid is inside a carton so the robot can pick the empty cartons off the line. Which of the following would work for this task?
A. Inductive proximity switch B. Capacitive proximity switch C. Photoelectric proximity switch D. Hall effect sensors