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Bypass humidifiers are connected between the heated and cold air return ducts, using the pressure difference between these ducts to cause some heated air to make a bypass through the humidifier and return to the furnace. Any humidifiers should usually be disabled during the summer months if air conditioning is used; air conditioners partially ...
Air streams are mixed to save energy and improve energy efficiency by partially recirculating conditioned air.. The most common application for an air-mixing plenum is the mixing of return air (or extract air) with fresh air to provide a supply air mixture for onward distribution to the building or area which the ventilation system is serving. [1]
An enhanced electronic version, known as ASHRAE Handbook Online is a web-based version updated annually that contains the four latest volumes as well as extra content such as calculations, demonstration videos, and spreadsheets. The various versions of the Handbook are typically available to the public via technical, and other, libraries and ...
Requires less energy than electric resistance heating and possibly more efficient than fossil fuel fired furnaces (gas/oil/coal). Air source types may not be suitable for cold climates unless used with backup (secondary) source of heat. Newer models may still provide heat when coping with temperatures below 0 °C (32 °F).
BYU is still undefeated. Somehow. The No. 9 Cougars took advantage of a fourth-down holding penalty to stun Utah 22-21 late Saturday night. The Utes had led for the entirety of the second half and ...
In Drayton's three seasons at the helm, the Owls posted a record of 9-25. Defensive coordinator Everett Withers will serve as interim head coach for the team's final two regular season games.
The Kansas City Royals acquired second baseman Jonathan India from the Cincinnati Reds on Friday, adding a dependable leadoff hitter and middle infielder to play alongside star shortstop Bobby ...
Redundancy: If one zone furnace fails, the others can remain working; Disadvantages: Cost. Furnaces cost much more than zone dampers; Power consumption. Operating furnaces draw power whereas a zone damper only draws power while in motion from one state to the other (or, in some cases, a very small amount of power while holding closed)