Just a quick question - when using high temperature hot water what type of valves do you typically use? Butterfly or Ball? Sorry if this is a silly question.
Has anyone utilized the VAV diffusers? I am wondering with the thermal element inside the diffuser determining how much air to space to contro temp- what tells the unit to be in heating or cooling? outdoor air temp only? What allows the unit to maintain constant volume?
Thanks for the input. Maybe beam wasn't the approipriate term. We are trying to mount the transformer 9'aff and need a frame to support it. My boss asked me to do the design (my original degree was in structures - never practice always been mechanical therefore I have lost a lot of what I...
the span is 54'' in the one direction and 36'' in the other. I also forgot to mention that the transformer is supported on top of 2 vibration isolators on the long sides. There fore we are dealing with 2 points loads on the long members, rather than a uniform load.
I need assistance designing a small structure to support a 2000 lb transformer. It is to be mounted on an angle fram supported from a plate bolted through a 12'' masonry wall. Not sure but I think a 3x3x1/2 angle fram with 1/4'' thick plate with 4 1/2'' bolts will do the trick. any feelings?
I am currently looking for some good a/c load calculation, duct pressure drop and water piping pressure drop programs. Any suggestions would be appreciated.
Thanks
