Ventilating or ventilation (the V in HVAC) is the process of exchanging or replacing air in any space to provide high indoor air quality which involves temperature control, oxygen replenishment, and removal of moisture, odors, smoke, heat, dust, airborne bacteria, carbon dioxide, and other gases...
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HVAC Free Cooling –The goal of a free cooling system is to save energy. A free cooling system saves energy costs by allowing the cooling tower to directly satisfy a building’s cooling needs without operating the chiller in cold weather. The amount of potential energy savings available depends...
This warm water is known as condenser water because it gets heat in the condenser of the chiller. The chiller is typically at a lower level, like in a basement. The cooling tower’s role is to cool down the water, so it can return to the chiller to pick up more heat. ...
What is economizer? An economizer is a mechanical device that reduces the amount of energy used to cool a data center or other buildings. It is integrated into the building's heating, ventilation and air conditioning (HVAC) systems, which is why it is sometimes called a HVAC economizer. An...
What is variable air volume VAV system HVAC basics The VAV system mainly consists of a, furnace, thermostats, air handler, main duct, VAV boxes, diffusers, branch ducts and a chiller/condensing unit. It also includes some of the subsidiary parts such as, ...
VVT systems use a time-share system between heating and cooling when both are required from the same unit. This is particularly important during times of fluctuating weather or for buildings that need interior cooling during heating season. VAV systems, with their constant temperature supply, can ...
of the coils being filled with refrigerant, however, they're filled with chilled water. Warm air from the data center room is drawn back into the CRAH unit, passing over the chilled water coils. The heat transfers from the air to the water, where the water then returns to a chiller. ...
A brushless DC motor has a permanent magnet in the rotor and wound coils in the stator, whereas a brushed DC motor is the opposite, with wound coils in the rotor and a permanent magnet in the stator. In addition, while brushes and a commutator are essential for the rotation of a brushed...