When is zoning an advantage?
What effect does the introduction of radiant cooling systems have on the chilled water production?
What influence does the introduction of radiant cooling systems have on other building services?
What is the difference between sensible cooling and latent cooling?
The heat energy distribution costs of hydronic systems are about 1/10 of the cost of a forced air system. How come?
Why is a mixing loop the best way to control a radiant system?
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Q: When is zoning an advantage?
A: When a building has different requirements to temperature or when the internal load from occupants is different.
Q: When is zoning an advantage?
A: When a building is more than 1000 m2
Q: When is zoning an advantage?
A: When a building has more than three floors
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.
Q: What effect does the introduction of radiant cooling systems have on the chilled water production?
A: Radiant cooling systems require more or less the same chilled water temperature as traditional systems, which means the use of sustainable sources are at the same level.
Q: What effect does the introduction of radiant cooling systems have on the chilled water production?
A: Production of chilled water from sustainable sources such as cold ground water or water from rivers and lakes is not feasible due to high initial investment and long distribution pipes.
Q: What influence does the introduction of radiant cooling systems have on other building services?
A: Air volumes, air handlers and air ducts can be reduced in size because radiant cooling systems take care of the sensible heat loads and a dedicated outdoor air systems can be introduced (DOAS).
Q: What influence does the introduction of radiant cooling systems have on other building services?
A: Air handlers will still need the usual air recirculation functionality because the need for outdoor air is left unaffected.
Q: What influence does the introduction of radiant cooling systems have on other building services?
A: Since the radiant system takes care of the total cooling load, cooling coils in air handlers can be left out.
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
Q: What is the difference between sensible cooling and latent cooling?
A: It is the same expressed with two different words
Q: What is the difference between sensible cooling and latent cooling?
A: Sensible cooling involves removal of humidity from the air while latent cooling involves reduction in temperature
Q: The heat energy distribution costs of hydronic systems are about 1/10 of the cost of a forced air system. How come?
A: Because forced air systems need much more air volumes to transport the same amount of energy than is the case with water.
Q: The heat energy distribution costs of hydronic systems are about 1/10 of the cost of a forced air system. How come?
A: Because the efficiency of pumps are much greater than the efficiency of fans.
Q: The heat energy distribution costs of hydronic systems are about 1/10 of the cost of a forced air system. How come?
A: Because the fan pressure needed in air handlers are much greater than the pressure needed in water based hydronic systems.
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
Q: Why is a mixing loop the best way to control a radiant system?
A: Mixing loops allow for constant flow on both the primary and secondary side, which ensures reduced pumping costs
Q: Why is a mixing loop the best way to control a radiant system?
A: Because temperature is quickly and accurately adjusted in the radiant surface