Recent content by henegg

Thanks everyone. I appreciate it. Tom

Thanks Guys The vessels are any where from 15 to 25 years old. They are in the US. can any one request copies from the National Board or do you need to be a member of some organization? Thanks Tom

Hello all I need to find out how to request or obtain any U1 forms filed out for the pressure vessels in our plant. Would the manufacturer have these? Does ASME have copies of these and if so how can I get copies? thanks Tom

hi where on line could I find some examples h&v design for a room and then how the unit is set up to handle the design requirments? Thanks Tom

thanks guys great suggestions. There is a damper on the inlet of the fan. It looks like it has not moved in decades. But maybe it is time to make it do some work. these are centrifugal fans. and I will start digging into the fan laws to see if I can make heads or tails of them. Do you have any...

hi We have an old spray dryer. it has an inlet fan and an exhaust fan. currently it pulls the inlet air from the the plant causing major air flow issues through out the plant. The plan is to duct the inlet to the outside so it has its own air source.Then the plant air flow can be straightened...

Thanks that helps

thanks for the info. the air change per hour ACH,in this case is dictated by the purpose of this room, not the occupancy of the room. The ach requirement is larger than the heat loss so I am using the ACH for this design. so if I need to use 100% fresh air(finished food product area) to meet...

Hi I am designing a MAU for the first time I am trying to understand how to determine the amount of return air to supply a mixing box before the heater. The outside winter design conditions are -15f at 70% humidity. inside design is 75f at 50% humidity. I need to supply 10,000cfm of fresh...

Hello I am sizing a make up air unit. this is the first time I have done this. We are only worried about heating the room. I have calculated the following: the air flow need for 10 air changes. the heat loss in through the walls and roof and quantity of air needed to make up for this loss...

thanks for the feed back. we are planing having a air stream of 5000cfm. MattyWaste how did you calculate or find 81 F? thanks again Tom

hi Problem: Have a dryer that is evaporating water off a product at a rate of 2923 lbs of water/hr. If we pull room air at 70F @ 50%RH at rate of 23738 lbs/hr. What is the temperature of the resulting air stream?what formulas do I use?

hello I have a drum dryer that uses steam to evaporate off the moisture in the product we dry. we are installing a similar dryer and wish to use a rotoclone to dehumidify the exhaust air. we know the moisture of the product going in and the moisture of the product out. I do not know the actual...

Thanks everyone please educate me on how AIR DRYING insures passivation or at least that was what customer led us to believe. Thanks tom

HI We are doing some custom processing of liquid egg for a bigger food company. They want any new product lines and/or tank passivated before use. Currently, that is not our practice. We tig weld all our s/s line,with an argon purge and then polish the welds. We have never had a problem with...