mikeg Posted November 3, 2014 Share Posted November 3, 2014 Hi Everyone, We're getting close to putting in our steam lines, which means I need to finalize the engineering on the steam lines. I think the only question that I have left is if I need to pump the condensate up to my main return line. I'm hoping people can weigh in on this and give us a little insight. If I'm not missing anything, I think the main details needed to answer this question are: 1) The still's jacket is rated only to low pressure (<15psi) 2) The power to the still will be adjusted by a gate valve on the steam line. 3) We'll have a strainer, steam trap, and check valve on the condensate line out of the still 4) And then immediately there will be a 8' to 9' rise to the main condensate line running back to the condensate return tank that feeds the boiler Other info on the system: The still is 250 gallon The boiler is a 30HP Parker that we'll probably run around 30 or 40 psi with a 15psi pressure regulator in-front of the still and mash cooker. We plan to branch off a main steam pipe that will run about 30' sloping away from the boiler, with a trap at the end to run the main condensate line sloping back to the boiler. My thinking on it is that if the still's jacket is at 15 psi, that is more than enough pressure to push the condensate up 9'. But with regulating the power to the still with the gate valve, I can't be positive that the pressure will always be 15 psi, right? By my calculations, I only need about 4.4 psi to push it up. Can I be sure that there will always be 4.4psi on the back? Another general question is, if this rise is fine, are we ok with water hammer? What to do? Would an inverted bucket and check valve ok with this? The easy solution is to put in a Pressure Motive Pump (PMP). I'd like to get by without it though because of $$ and also because I would need to buy 2 PMPs, one for the still, and one for the mash cooker because those pieces of equipment are spaced out and I can't run a condensate line between them. I can supply drawings if anyone wants to see the plan. Thanks in advance for any and all comments or thoughts. Cheers, Mike ps. I also assume that all the info I glean from here should be double checked with experts and I will take any suggestions at my own risk. Link to comment Share on other sites More sharing options...
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!Register a new account
Already have an account? Sign in here.Sign In Now