Very informative video once again Andrew! I was confused at the start of the video as im used to using the velocity triangle to work out flow rates for fixed quanity of water through a fixed diameter of pipe ie Quanity over area x velocity but understand your equation converts from M2 to mm instead of converting it yourself.
@@plumberdan5720 in the heat key course Adam chose to teach the theory long hand so that people had an actual understanding off the theory. But when we are working with these numbers almost daily we need a formula that takes a straight to the answer
Thanks Andrew, really interested although im still slightly baffled by the mathematics (muppettry on my part)One query i have always had is regarding the stepping up in size from a distribution pipe to another. For example, you mentioned using a 35mm section being fed by 28mm port, i have always assumed the 28mm will only pass a maximum amount of fluid/heat through so therefore query the usefulness of the 35mm section. Perhaps you can direct me to where I can study the fundamentals of that ? Many thanks, John
@@brotherjohnno the purpose of the sizing of the pipe is to pressure differential to a minimum. Pressure loss is a function of diameter and length and not just diameter. So one of the comments I make in the video is that what's the length of 35 millimetre pipe being so short set 28 mil may actually be sufficient in providing a low enough pressure drop. The use of 35 mm is simply an adherence to the design principle
The P/(Txshc) bit gives the mass flow, the 1000 is a unit converter ,dividing by velocity gives cross section area of pipe ,dividing by pi gives Dsquared divided by 4. The 2000 is 2 (the sqroot of 4)x1000 (unit converter) . Hope this helps !
Hi Andrew, great video. Currently going through Heat Geek and this is really helping so thank you. What’s the difference between a low loss header and a distribution header and what application would require one over the other. Hope that question makes sense. Thanks very much again.
@@sambutler927 a low loss header has a distribution header. It's not a choice between one or the other. The only time you wouldn't have a distribution header is it for low loss header is supplying a single circuit. Latest tribution header distributes the water from the Llh to multiple circuits
Oh ok that makes sense. Most of the low loss headers I’ve seen have multiple connections directly on the llh. So you’re referring to taking a 35mm pipe off of the llh flow and having a manifold to supply multiple zones with independent pumps ? Thank you for your reply. It is appreciated
@@sambutler927 on my UA-cam elsewhere I have a video showing how not to do a low loss header. It can be difficult to do a low loss header with multiple outlets
Thanks for the teachings! Helping me a lot with getting my head around design.
Lots of content coming through Andrew thanks !
Very informative video once again Andrew! I was confused at the start of the video as im used to using the velocity triangle to work out flow rates for fixed quanity of water through a fixed diameter of pipe ie Quanity over area x velocity but understand your equation converts from M2 to mm instead of converting it yourself.
@@plumberdan5720 in the heat key course Adam chose to teach the theory long hand so that people had an actual understanding off the theory. But when we are working with these numbers almost daily we need a formula that takes a straight to the answer
Thanks Andrew, really interested although im still slightly baffled by the mathematics (muppettry on my part)One query i have always had is regarding the stepping up in size from a distribution pipe to another. For example, you mentioned using a 35mm section being fed by 28mm port, i have always assumed the 28mm will only pass a maximum amount of fluid/heat through so therefore query the usefulness of the 35mm section. Perhaps you can direct me to where I can study the fundamentals of that ? Many thanks, John
@@brotherjohnno the purpose of the sizing of the pipe is to pressure differential to a minimum. Pressure loss is a function of diameter and length and not just diameter. So one of the comments I make in the video is that what's the length of 35 millimetre pipe being so short set 28 mil may actually be sufficient in providing a low enough pressure drop. The use of 35 mm is simply an adherence to the design principle
The P/(Txshc) bit gives the mass flow, the 1000 is a unit converter ,dividing by velocity gives cross section area of pipe ,dividing by pi gives Dsquared divided by 4. The 2000 is 2 (the sqroot of 4)x1000 (unit converter) . Hope this helps !
Hi Andrew, great video. Currently going through Heat Geek and this is really helping so thank you. What’s the difference between a low loss header and a distribution header and what application would require one over the other. Hope that question makes sense. Thanks very much again.
@@sambutler927 a low loss header has a distribution header. It's not a choice between one or the other. The only time you wouldn't have a distribution header is it for low loss header is supplying a single circuit. Latest tribution header distributes the water from the Llh to multiple circuits
Oh ok that makes sense. Most of the low loss headers I’ve seen have multiple connections directly on the llh. So you’re referring to taking a 35mm pipe off of the llh flow and having a manifold to supply multiple zones with independent pumps ?
Thank you for your reply. It is appreciated
@@sambutler927 on my UA-cam elsewhere I have a video showing how not to do a low loss header. It can be difficult to do a low loss header with multiple outlets