Monthly Plumbing Quiz: Radiant Heating & Cooling

Radiant heating and cooling systems can deliver high levels of comfort at fantastic levels of efficiency. So how well do YOU know radiant? Take our quiz and find out!

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1. Creating an efficient radiant cooling system requires:

a. A tightly sealed buidling envelope.

b. Careful humidity control.

c. Closer tube spacing than a radiant heating system.

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2. All hydronic systems require pressure testing. According to the Uniform Mechanical Code, test pressures need to be held for not less than ____ with no perceptible drop in pressure.

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b. 20 minutes

c. 40 minutes

d. 10 minutes

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3. One of the reasons that radiant systems are so efficient is that water is a much better thermal conductor than air. Per unit of volume, water has about how many times the specific heat capacity of dry air (at 77 degrees F)?

a. About 32 times

b. About 320 times

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d. About 32,000 times

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4. Which of the following is not an advantage of radiant heating systems?

a. Quiet operation

b. Higher efficiences

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d. Will not draw moisture out of the air

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5. Chilled beam systems use the principles of radiant cooling to turn entire rooms into conduction HVAC cooling systems. Because of the need for proper air circulation, they cannot be used alone in buildings where the ceilings are higher than:

a. 2.5M (8.2 ft.)

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c. 2.9M (9.5 ft.)

d. 3.1M (10.2 ft.)

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