Search results with tag "S hvac system designer"
Chilled-Water System Decisions - Trane Hong Kong
www.tranehk.com2 Trane Engineers Newsletter volume 47-3 providing insights for today’s HVAC system designer (from return to supply) in the bypass line occurs. This warm, deficit water flow increases the system supply-water temperature and at some point an additional chiller and primary pump are enabled. A chiller and pump are disabled when
Free Cooling Using WaterEconomizers - Trane
www.trane.com2 Trane Engineers Newsletter volume 37–3 providing insights for today’s HVAC system designer Expected building loads can vary widely for a given dry-bulb and wet-bulb combination (e.g. night versus day, occupied versus unoccupied), so this requirement is somewhat unclear. A reasonable assumption is that the intent of the Standard is 100% of the
Direct-Drive Plenum Fans and Fan Arrays - Trane
www.trane.com4 Trane Engineers Newsletter volume 39–1 providing insights for today’s HVAC system designer † In a synchronous-speed selection, the motor operates at its synchronous speed (typically 1800 or 1200 rpm) and the diameter and/or width of the fan wheel are changed to achieve the desired performance. † In a flexible-speed selection, the
Airside Economizers and ASHRAE Standard 90.1-2013 - Trane
www.trane.com2 Trane Engineers Newsletter volume 44–2 providing insights for today’s HVAC system designer Economizer Operation Standard 90.1 does not allow the economizer control to be solely dictated by mixed-air temperature. It requires the economizer controller to use another variable, such as outdoor dry-bulb temperature, to sequence operation with