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Question 1 of 6
Intermediate
What characterises hydronic systems for heating or cooling?
Question 2 of 6
Intermediate
What characterises forced-air systems for heating or cooling?
Question 3 of 6
Intermediate
Water’s heat capacity is how many times greater than that of air?
Question 4 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 5 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
What does the superior energy capacity of water mean?
Question 6 of 6
Intermediate
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1: What characterises hydronic systems for heating or cooling?
Lower energy distribution costs and improved space efficiency
1: What characterises hydronic systems for heating or cooling?
No change in energy distribution costs; improved space efficiency
1: What characterises hydronic systems for heating or cooling?
Lower energy distribution costs; no change in space efficiency
2: What characterises forced-air systems for heating or cooling?
Either high air volumes or high air velocities are required for energy transport, not both
2: What characterises forced-air systems for heating or cooling?
They depend on low air volumes for energy transport, often at low air velocities
2: What characterises forced-air systems for heating or cooling?
They depend on high air volumes for energy transport, often at high air velocities
3: Water’s heat capacity is how many times greater than that of air?
2.1
3: Water’s heat capacity is how many times greater than that of air?
2.4
3: Water’s heat capacity is how many times greater than that of air?
4.2
4: 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
4: 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
4: 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
5: 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
5: 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
5: 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
6: 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
6: What does the superior energy capacity of water mean?
Hydronic systems consume much less energy for energy transportation than forced air systems
6: What does the superior energy capacity of water mean?
Water’s high density makes it inefficient for energy distribution in heating or cooling systems