Question 1 of 6
Intermediate

When using a hydronic system instead of an air-based system, how much extra floor space might the building owner get from space efficiency gains?

Question 2 of 6
Intermediate

How much more power does a forced air system use for the distribution of air than a hydronic system?

Question 3 of 6
Intermediate

What characterises forced-air systems for heating or cooling?

Question 4 of 6
Intermediate

How much energy is potentially saved when using a hydronic system instead of an air-based system?

Question 5 of 6
Intermediate

What does the superior energy capacity of water mean?

Question 6 of 6
Intermediate

In a cooling system, a large body or surface with a lower temperature than the other surfaces in a room will…

Question 6 of 6
Intermediate

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1: When using a hydronic system instead of an air-based system, how much extra floor space might the building owner get from space efficiency gains?
Can be as high as 5%, because of the significantly improved space performance
1: When using a hydronic system instead of an air-based system, how much extra floor space might the building owner get from space efficiency gains?
No difference, both systems take up a lot of space
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1: When using a hydronic system instead of an air-based system, how much extra floor space might the building owner get from space efficiency gains?
Up to 5% gain with the air-based system, because air is lighter than water
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2: How much more power does a forced air system use for the distribution of air than a hydronic system?
Twice as much power is required by air-based systems
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2: How much more power does a forced air system use for the distribution of air than a hydronic system?
Both use the same power; hydronic systems benefit from improved space efficiency only
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2: How much more power does a forced air system use for the distribution of air than a hydronic system?
As much as 10 times more power may be required by air-based systems
3: What characterises forced-air systems for heating or cooling?
Either high air volumes or high air velocities are required for energy transport, not both
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3: What characterises forced-air systems for heating or cooling?
They depend on low air volumes for energy transport, often at low air velocities
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3: What characterises forced-air systems for heating or cooling?
They depend on high air volumes for energy transport, often at high air velocities
4: How much energy is potentially saved when using a hydronic system instead of an air-based system?
Up to 25%
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4: How much energy is potentially saved when using a hydronic system instead of an air-based system?
Up to 35%
4: How much energy is potentially saved when using a hydronic system instead of an air-based system?
More than 40%
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5: What does the superior energy capacity of water mean?
Hydronic systems are not as good as forced-air systems, because they don’t release energy as readily
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5: What does the superior energy capacity of water mean?
Hydronic systems consume much less energy for energy transportation than forced air systems
5: What does the superior energy capacity of water mean?
Water’s high density makes it inefficient for energy distribution in heating or cooling systems
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6: In a cooling system, a large body or surface with a lower temperature than the other surfaces in a room will…
…receive more radiation than it emits
6: In a cooling system, a large body or surface with a lower temperature than the other surfaces in a room will…
…emit more radiation than it receives
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6: In a cooling system, a large body or surface with a lower temperature than the other surfaces in a room will…
…emit and receive the same amount of radiation
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