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ECADEMY test

5 - High efficiency hydronic systems

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Correct
01.
Q: Why is a mixing loop the best way to control a radiant system?
A: Because flow rate and temperature can be adjusted according to the desired performance of the radiant surface
Correct
02.
Q: Because the fan pressure needed in air handlers are much greater than the pressure needed in water based hydronic systems.
A: Because forced air systems need much more air volumes to transport the same amount of energy than is the case with water.
Correct
03.
Q: Hydronic systems take up much less space than forced air systems in a building. Why is that?
A: Because hydronic systems use water as the cooling media, and water can carry more energy than air. That means smaller systems are needed to transport the same amount of energy.
Correct
04.
Q: When is zoning an advantage?
A: When a building has different requirements to temperature or when the internal load from occupants is different.
Correct
05.
Q: What effect does the introduction of radiant cooling systems have on the chilled water production?
A: With radiant cooling systems it is increasingly feasible to utilise sustainable chilled water sources for free cooling because the chilled water temperature is up to approx. 8 - 10 °C higher than with traditional systems.
Correct
06.
Q: What is the difference between sensible cooling and latent cooling?
A: Sensible cooling involves reduction in temperature while latent cooling involves removal of humidity from the air