I work in a Canadian Manufactucturing facility that ships to the US, so we are subject to the FDA regulations and requirements. My QA manager has a more intimate knowledge than I do of "Food Grade" and the discussions we have had revolve around "culinary steam". This...
I calculated Re of 1.065 (obviously laminar flow, as you stated) and Pr of 113507. (Please feel free to correct me if these are out of whack)
I am unfamiliar with a method of translating these numbers into a comparative "real" transfer coefficient to determine the feasibility of the...
ardilesd - Thank you for the direction, but I need to bother you again.
Using 92,200 kcal/hr requirement, 7.7 m2 surface area, DTML of 46.7C, I followed through the calculations, coming up with 254 kcal/hr-m2-C. (Same order of magnitude as the 271 you came up with and the 250 that TD2K found)...
JOM, I agree wholeheartedly about this not being the ideal solution. The reason that it is being considered is primarily cost. The current geography dictates the 150ft run of piping, but that is done at 180 degrees F, at which temperature there is significantly less viscosity in the product...
My apologies if this is a simplistic question, but it's been a while since I've actually played with the numbers, mostly a management guy now.
The issue that I have is that I've been presented with a proposal that doesn't seem realistic.
150 ft of Tube-in-Tube heat exchanger:
Our product...