StephenJcan
Mechanical
Here's a problem I have at work and I was hoping someone could help me out. I haven't had to do a serious heat transfer problem since college.
A stability chamber that maintains a constant 104F 80% RH room has sprinklers serving it.
The 1" sprinkler pipe extends down into the room by about 18", it goes through a 3" foam insulation metal panel. Let's assume it's 1/4" thick stainless steel sheets sandwiching the 3" foam insulation.
The 1" sprinkler pipe extends 36" above this foam insulated roof and the pipe connects to the 3" fire sprinkler main.
The problem I'd like to try to work out is. If the sprinkler system was just filled with 60F water and the stability chamber is at 104F, what would be the lowest temperature of the pipe located inside the stability chamber?
There is passive convection inside the pipe, conduction in the water and the pipe. Any one have a few suggestions. I was planning on calculating the overall heat transfer from the room into the pipe inside the room versus the heat rejection of the pipe above the room and making a guess on the convective value for the water in the pipe.
Here's a sketch of the problem.
A stability chamber that maintains a constant 104F 80% RH room has sprinklers serving it.
The 1" sprinkler pipe extends down into the room by about 18", it goes through a 3" foam insulation metal panel. Let's assume it's 1/4" thick stainless steel sheets sandwiching the 3" foam insulation.
The 1" sprinkler pipe extends 36" above this foam insulated roof and the pipe connects to the 3" fire sprinkler main.
The problem I'd like to try to work out is. If the sprinkler system was just filled with 60F water and the stability chamber is at 104F, what would be the lowest temperature of the pipe located inside the stability chamber?
There is passive convection inside the pipe, conduction in the water and the pipe. Any one have a few suggestions. I was planning on calculating the overall heat transfer from the room into the pipe inside the room versus the heat rejection of the pipe above the room and making a guess on the convective value for the water in the pipe.
Here's a sketch of the problem.