Article: Furnace classifications. (includes related article)

Article: Return-air systems: death by suffocation?
Air Conditioning, Heating & Refrigeration News;  October 6, 1997 ;     700+ words ... ... often, the crucial return-air systems in homes or ... Instead of ductwork, the return-air supply is left to wall ... poor comfort, too hot supply-air temperature in the heating ... you can install larger return-air grilles, or add additional ...

Article: Cooling with dehumidification.
Air Conditioning, Heating & Refrigeration News;  July 8, 1996 ;     700+ words ... ... temperatures are taken of the supply and return air and found to be as follows: Return air Supply air 80[degrees]F db 60[degrees]F ... for each is found to be as follows: Return air Supply air 65[degrees]F wb = Enthalpy of 30 ...

Article: Outside air: inside data centers: data centers are expensive ...
Engineered Systems;  September 1, 2008 ;     700+ words ... ... enthalpy lower than return air and higher than supply air setpoint: During ... enthalpy lower than return air and supply air setpoint: During this period the supply air setpoint is met ... outside air with return air. No mechanical ...

Article: AIR DUCT CLEANING TO BEGIN AT ANIMAL SERVICES CENTER OF MESILLA ...
US Fed News Service, Including US State News;  February 7, 2008 ;     446 words ... ... Services include a deep clean of the source of the air supply including the blower, squirrel cage, coils and return air supply. Air ducts will be brush vacuumed and all ducts and vents will be sanitized with an environmentally safe sanitizer ...

Article: Taking particle measurements in hvac systems. (Tech Tips).(Brief ...
Snips;  May 1, 2002 ;     700+ words ... ... measurements must be taken at the return air and supply air registers. A laser particle ... to the number taken in the return air. Set location to a representative ... Increase or Decrease = 100 (Supply air/return air -1) Once the calculations ...

Article: The importance of ventilation in schools.(School Market)
Air Conditioning, Heating & Refrigeration News;  November 8, 2004 ;     700+ words ... ... determine the difference between return air and supply air measuring stations. This difference ... measuring station in the supply and return air was 3-percent accurate, an ... if there is 100,000-cfm supply air system with a 6-percent error ...

Article: Contractor uses 'menu' pricing on new home bids in Topeka. ...
Air Conditioning, Heating & Refrigeration News;  July 5, 1993 ;     700+ words ... ... offset takeoffs, end caps, and return air drops. Even rough-ins can ... Then you count the number of return-air openings. For the flue, you ... installed, fire furnace, return-air grilles, supply-air registers, water heater vent ...