Question 1:
In Question 2, are you assuming that the ventilation airflow rate, Qv, is equal to the total airflow rate, Qt? And then again, similiar to Question 1, assuming that Qv is equal to Qe?
Answer:
The total air flow rate is defined in the problem definition to be a constant, 7,200 m^3/h. As the ventilation (and therefore exhaust since they are equal) increases the recirculated air must therefore decrease.
Question 2:
In the instructions sheet, you gave us an equation for the energy carried by airflow which I understand. But what do the T and W in the equation stand for?
Answer
T is the temperature in degrees Fahrenheit
W is the air humidity in lb-water/lb-dry-air
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