Can someone point me to steam nozzle photo - not sure what it is? I'm sizing a 100HP 150 psi steam boiler for a process and the manufacturer recommends a 2-1/2" steam nozzle.
The boiler comes with a 4" flanged supply connection & thought I would use a 4" stop check & OSY valve. Is the nozzle...
I am designing a 150 psi natural gas fired steam boiler with an electric superheater raising the delivery temp to 600F.
The horizontal electric superheater has a 3/4" npt drain at the bottom of the vessel.
Any suggestions on how to handle the drain? Bucket trap to vented receiver then waste to...
I am a HVAC engineer working on an exhaust design project for a water treatment plant. The plant is having air quality issues with chlorine odor in the filter bed gallery. Workers at the plant are complaining about sore throats after a full day work.
We are planning on building enclosures to...
Does anyone know of any good books for water treatment / wastewater treatment plant ventilation design?
These buildings are simple yet very complicated from a ventilation standpoint. Chlorine odors, high humidity below grade in pipe galleries, etc.
I am having a hard time convincing plant...
What is the resulting RH of air in a warehouse heated to 50-55F with a 35F open tank of water?
Knowns:
Building is 200x200
Open tank is 100x100
Ambient Outdoor 10F/20%RH
Indoor 50-55F
RH of Air?
Where do you account for the antifreeze losses in GSHPCalc software?
If you have a 300 ton system load you need 300+ tons of cooling due to the antifreeze i.e. more wells required.
Or should I try to get my load calc program to account for the additional antifreeze load?
I am working on a LEED water treatment plant project. According to ASHRAE 90.1 the process areas are semi-heated (less than 15 BTU/hr-ft2 Zone 4) spaces and the office areas are conditioned.
When preparing the simulation model, I'm thinking the envelope should be broken into 2 values. One...
I'm working on a project with a heated building on top of an open parking garage. We heat traced and insulated all of the exposed traps. The inspector is quoting IPC section 305.6 and is questioning why all of the sanitary drain piping is not heated & insulated.
I've been asked to design an outdoor sprinkler system for a set of wood exterior egress stairs. Very quickly, the local jurisdiction is making an allowance for a close lot line problem.
My questions:
1. Is this full of inherent liabilities since NFPA 13 does not address open exterior stairs...
Does anyone know if shaft wall liner can be used as an exhaust air duct? I think the concerns would be air leakage only? I'm sure the material meets flame & smoke index since it is a fire rated shaft. Any thoughts?
Does anyone know a rough payback to retrofit an existing pneumatic control system with a new DDC BMS system? The building is a water treatment plant with offices, lab, maintenance, etc approximately 10,000SF. The building has a central hot water heating system with cast iron boilers. There...
I am working on a 4-story "stacked" townhouse plumbing design. For those who aren't familiar there are two, 2-story towhouses stacked on top of each other.
My background in plumbing mostly commercial. I am stumped on how bathroom groups on each floor (not stacked) connect to each other without...
