Practice Specific Volume (5.1.7) - Psychrometry - Refrigeration and Air Conditioning

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9 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does DBT stand for?
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Think of actual air temperature.
Question 2.
Name one example of comfort air-conditioning.
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Where do people usually feel comfortable?
3Question 3.
What is the primary function of comfort air-conditioning?
- To control humidity
- To cool and heat air
- To maintain suitable temperature and humidity
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Think about what people need to feel comfortable.
4Question 4.
True or False: Psychrometry only studies dry air.
- True
- False
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Focus on the key term 'moist air'.
Question 5.
A central AC system is failing to maintain optimum humidity levels. Analyze the components using psychrometric principles to identify potential causes.
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Consider how each psychrometric property interacts.
Question 6.
Using the psychrometric chart, determine the energy requirements to cool a 500 CFM airflow from 80°F DBT and 70% RH to 70°F DBT and 40% RH.
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Remember to reference the chart for specific heat values.

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