3 way mixing valves are common. 3 way diverting valves are not. In the past I had encountered an owner you vowed to stay away from diverting valves but it appeared that the real issue was that the diverting valve was applied in a mixing valve application
Has anyone consistently relied on...
Our local ASHRAE chapter a few years ago put out a rules of thumb guideline packet whihc was more up to date than the condensed ASHRAE Pocket handbook information.
From that guideline, a general office environment was listed as 300-400 sqft/ton but that number truly should only be as an...
Commonly manufacturers (of DX split systems) appear to indicate that the height of a vertical refrigerant risers can be installed as long as a trap in installed for every, say 25 feet, of vertical rise BUT then state in that there is a restriction on the vertical rise of only 20 feet, no traps...
Has anyone successfully simplified using a waterside economizer and an airside economizer on air handlers using chilled water?
The problem I see occurring is sorting out the proper sequencing and possibly complicating a system with little to gain from the plate and frame HX except under...
