I'm in central Florida where humidity is high most of the time. I'm looking for a small 100% OA DX package unit that will provide dehumidified outside air to a small lab without having to use reheat on the main HVAC unit.
If you damper it down, hot gas bypass will increase to provide a false load on the compressor, thus wasting energy. Using a 700 CFM unit in a 600 CFM application wouldn't be too bad, but for a 300 CFM application it would be wasting a lot of energy.
I'm looking for a manufacturer of a small outside air DX precooling unit in the 300 CFM to 600 CFM size range. I haven't been able to find anything smaller than 700 CFM. Any suggestions?
No, it's an existing duct arrangement used in four different places so it would be a big deal to modify them all - even if I could get the funding approved. The existing 42" flex ducts are almost 30 years old and I can't find any record of who the original suppier was. I found that...
I've unsuccessfully searched the internet several hours for a supplier of a heavy-duty, 42" diameter, spiral-wire-reinforced, flexible duct for conveying clean ambient air at 5" WC. Does anyone know where I might find such an animal?
Yes, I was planning to take some pressure readings after STS-120 launches. I'm trying to locate a fast-acting pressure gauge that will retain the peak reading.
Sounds like installing the gear operator on the butterfly valve would be a good investment. It makes sense that the slammed valve would be the starting point for the shockwave which would be unaffected by an upstream regulator. Thanks!
I have a pressure regulator set for 140 psi supplying water to a heat exchanger with a maximum pressure rating of 150 psi. If someone rapidly closes a butterfly valve downstream of the heat exchanger, will the heat exchanger see a pressure spike in excess of 140 psi? If so, I can prevent it by...
