I've always used the idea that at an opening, the pressure of the high side is used to create a velocity through the opening based on the differential pressure of the two sides. Area times velocity is CFM of flow to maintain the pressure in the space. This has worked for me over the years.
Try glass-foam insulation, cover that with a water - proof wrap. Expensive, but it is the only thing that I have used that works, keeps the pipe safe. Expansion for the pipe within the insulation and other special construction requirements need to be followed (per manufacturers instruction).
As stated, there isn't enough information to determine an answer. Are these tanks on suction side of pumps or discharge? Are these tanks supposed to provide float to keep pumps from cycling too rapidly? Are these day tanks on pump inlet side?
I have seen vessels and coils collapse since they were designed for pressure and not vacuum. Filling a body with steam, then letting the steam condense without a method to relieve the vacuum can be a problem. Also, condensate traps without sufficient head or back pressure will not allow the...
If the gas is steam, 60 psi steam is at about 310F. The piping thickness only needs to be about the thickness of paper for those conditions. However, such thin tubing isn't practical since standard piping has corrosion allowances, manufacturing tolerance, and safety factors included. I am not...
The fan curve is needed. At the point of lowest static pressure will be the highest volumetric flow rate. Volume flow divided by area yields velocity. However, the type of fan may not have a constant flow across the discharge face, but the average velocity will be as described.
The ASPE Handbook has an excellent section on Medical Gases. That handbook will cover everything needed for piping and process piping for non-chemical plants and refineries.
Sorry, I didn't look at the sketch of the pipe & angle iron. This doesn't affect my approximation that much, just that the area of heat transfer surface is about 47 SF instead of 60 SF. All calculations should be adjusted accordingly and are left as an exercise to the reader.
A Quick Approximate Solution
34 feet of 4" pipe has a surface area of about 40 Sq. Ft. As a first guess, assume the 700 CFM of air is heated to 290F (from 122F) which requires the steam to condense enough condensate to heat the air. The heat required for 700 CFM to raise in temp 168F to 290F...
Anyone can be called an engineer. However, you cannot provide engineering services to the public unless you are a Registered Professional Engineer. Same with stamping drawings for building permits.
Most states have the industrial excemption, but some will not allow someone to call himself a...
My guess is that this is the dehumidified air temperature rise. If you dehumidify air with a refrigeration type dehumidifier within the space, there will be a temperature rise from the condenser side of the dehumidifier. The air is cooled at the evaporator to condense out the humidity then the...
Don't forget that at the end use location, the control valve could reduce the steam pressure in the coils or exhanger to zero or less. The resulting condensate needs to get out of the heat exchanger or coil and into the condensate return system. If the condensate return is still on the 60 psi...
5 pascals is about 0.02 inches water column. If the room is at that pressure, air will flow through the openings at a speed that will match the velocity pressure of the room pressure. For 0.02 "w.c. that is about 560 feet per minute, i.e. the velocity pressure of air moving at 560 fpm is...
Non-shock working pressures for Class 125 is 125 psi @ 350F & for Class 250 is 250 psi @ 400F. At 150F the pressures are 175 & 400 psi repectively.
Water hammer or other shock loads will shatter cast iron. My previous employer stopped using cast iron in all water and steam lines for that...
