after visiting the job site again on wednesday I found more openings in the room. Its hard going off memory especially when you cannot take pictures of the space.
Anyways I calculated the total leakage area to approximately be 6730in^2 or 47ft^2, this is a pretty good assumption. I brought...
The size duct we have the damper in there is min pressure drop as opposed to the BDD. I do not recall what the difference was but significant enough. Normally we just install BDD that is what was on the existing fan, but for this case a MOD was used. Thanks!
We are trying to reduce the system static pressure. What happened the engineer who designed the system designed for half the CFM required. After the building was commissioned and the dishwasher had been running for a while they realized that the engineer sized the system for not enough CFM...
We just replaced an existing dishwasher exhaust fan (utility set) with an uplast 2500CFM at 3.5" ESP. We installed a motor operated damper in the curb adapter so when the fan starts up the damper opens up. This was an internal mounted fast acting actuator 120V. Since the owner wanted to use...
After thinking about it through the night I came to a conclusion to install two make up air units. One to supply 8,000CFM to the kettle/oven area where the main exhaust fans are and one to maintain the positive pressure in the RTE room. Thanks!
I'm trying to figure out how to calculate how much cfm is required to maintain an interior room at 5 pascals positive pressure.
The room is a "ready to eat" (RTE) room of a barbecue ribs processing plant. The issue being that the adjacent kettle and steam cooker rooms that have a total of 4...
