JMP was founded in 1958 and currently has 15 offices in the Southeast United States. We are an employee owned sales organization with the emphasis on specifications and systems while providing superior customer service. Our mission is to provide our customers with products and solutions for energy efficient water and steam related systems. We will do this while striving to be the best manufacturer's representative in the country from the viewpoints of our customers, vendors and employees. JMP has the expertise and products to provide integrated Hydronic, Steam and Condensate Systems.
Great info....I have just got to grips with my VSP. It's was set up on constant flow the system was not performing. Tracked down the manual and switched it to variable speed/variable pressure. Wow totally transformed my system. Took away .my condensing problem.
Your presentation is truly remarkable. The manner in which you've presented several alternatives and explained, without any unnecessary details, the effects both upstream and downstream in a concise manner is genuinely impressive. You have the ability to capture the complexity of interacting dynamics in a way that is both simple and clear. Thank you for such an enlightening video.
Thank you for the explanation. I would like to clear one doubt. To calculate return circulation head loss, we consider the farthest route of hot water supply and return and calculate the flow rate in LPM for that segment? Also, for the whole system only we calculate the heat loss to cover up that with the exchanger
My question is regarding the scenario where you have 150 gpm in the secondary loop but 100 gpm in the primary loop with the reverse flow in the decoupler, how can that happen if the pressure in the primary loop is larger?
Thanks, the content of your blog is great and very useful. I have a question, at 02:47 you establish that the chilled water plant supplies 7200 GPM, I understand that this 7200 GPM is obtained from the block load (3000 Ton), but how do you determine how much water flow should go to each terminal unit? ?
Thank you very much for such an awesome explanation, its really impressive to find an expert who can explain every detail in the system with such great knowledge and logic....I kept repeating the video times over and over to make sure fully understand it
What's the best method for finding the critical circuit when it's not obvious? The circuit with the most cumulative pressure drop? Or the one with vast majority of flow?
Hey Michael and thanks for the comment. We typically do not worry about the heat loss from the water flowing thru the return pipe because it is typically a small amount and is returned to the water heater where it will be heated back up. Thanks!
@@JMPCompany Thanks for the quick response! I am a bit torn because plumbing design books are split; some tell you to account for the return heat loss while others say it can be negligible. Most of the jobs I design are smaller, so I include losses from the return piping. But I can definitely see how in a larger job this will increase costs since there is much more piping (more heat loss) to account for.
Thanks for the comment. You can find it in the B&G Cooling Tower pumping and piping TEH manual at bellgossett.com. Below is a link to the manual. documentlibrary.xylemappliedwater.com/wp-content/blogs.dir/22/files/2012/07/TEH-1209A.pdf?_ga=2.61346984.505484141.1616590109-365535311.1614794899
Interesting. So my single pipe central heating system (two tees off single pipe to each radiator) doesn’t work. I wonder what’s been causing the radiators to heat up for the last 60 years then?
Great question. If you have any pressure drop between the two tees then you can get flow into the radiator with a pump. Bell and Gossett makes monoflo tees for this type of application for single pipe systems. Info can be found at: bellgossett.com/hydronic-plumbing-accessories/flow-control-valves/copper-red-ring-monoflo-fittings/
