Circulating Pump Basics - How a pump works HVAC heating pump working principle
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Date: 2023-11-17
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Comments and reviews: 27
Jean
Goodnight. I live in Portugal. And I have a grudfos 3x400v three-phase circulation pump motor that was 3-speed. it says on the plate 420w 0. 82A. 530w 0. 94A. 720w 1. 30A. It burned out due to a lack of phase, it has a board that has 12 terminals and only 3m 3 of line 1, 2 and 3 transform it, as I didn't care about the speed. I asked to try to rewind at maximum speed and leave 6 wires that I connect star or triangle because here 2 phases of 400v. Since I connected in star I measured the consumption in the tweezers each phase is giving me 0. 4A and it almost does not turn. In a triangle it was 0. 6 and it already has a bigger spin. But nothing compared to how it was before it broke down. did something go wrong when rewinding? how does the speeds work in the 3 phase system? Since now the return
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Goodnight. I live in Portugal. And I have a grudfos 3x400v three-phase circulation pump motor that was 3-speed. it says on the plate 420w 0. 82A. 530w 0. 94A. 720w 1. 30A. It burned out due to a lack of phase, it has a board that has 12 terminals and only 3m 3 of line 1, 2 and 3 transform it, as I didn't care about the speed. I asked to try to rewind at maximum speed and leave 6 wires that I connect star or triangle because here 2 phases of 400v. Since I connected in star I measured the consumption in the tweezers each phase is giving me 0. 4A and it almost does not turn. In a triangle it was 0. 6 and it already has a bigger spin. But nothing compared to how it was before it broke down. did something go wrong when rewinding? how does the speeds work in the 3 phase system? Since now the return
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tom
People, if you want warm water coming out fast at the faucet, simply make the loop without installing the pump. Pump is not necessary at all. Once the full loop is made in the warm water line, warm water will circulate through the warm water pipe by convection effect where hot water expands in the heater and forces the water to move through the loop to colder region and back into the heater and continue the cycle. I had a water pump installed but failed and I took it out and bypassed it and I still get nice hot water very quickly better than ever before with no headache to deal with failing pump or timer. Pump and timer are expensive and difficult to maintain and absolutely not needed in most residential use. If you do not believe me, try first before you take the trouble of installing one.
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People, if you want warm water coming out fast at the faucet, simply make the loop without installing the pump. Pump is not necessary at all. Once the full loop is made in the warm water line, warm water will circulate through the warm water pipe by convection effect where hot water expands in the heater and forces the water to move through the loop to colder region and back into the heater and continue the cycle. I had a water pump installed but failed and I took it out and bypassed it and I still get nice hot water very quickly better than ever before with no headache to deal with failing pump or timer. Pump and timer are expensive and difficult to maintain and absolutely not needed in most residential use. If you do not believe me, try first before you take the trouble of installing one.
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Player
If I were to install a log burner with a back boiler and connect it up with the central heating system, which has a combi boiler, but the pumps would operate in the same direction, what would happen to the pump in the combi boiler if it wasnt operating? Would the water pass through the non operating pump? Break/damage the pump? Or not pass through the pump as it will be passing through the radiators and then back to the log burner. And what if the boiler valve was open asking for hot water, what would happen with the water circulation then?
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If I were to install a log burner with a back boiler and connect it up with the central heating system, which has a combi boiler, but the pumps would operate in the same direction, what would happen to the pump in the combi boiler if it wasnt operating? Would the water pass through the non operating pump? Break/damage the pump? Or not pass through the pump as it will be passing through the radiators and then back to the log burner. And what if the boiler valve was open asking for hot water, what would happen with the water circulation then?
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ART
We have 2 tankless gas heaters and a hot water pipe that returns to the heaters, we can insert a pump in the circuit but since these heaters start working when a tap is turned on, the first time in the day the hot water is used it will not give immediate hot watter. How can we set it up so we have hot water immediately the first time?
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We have 2 tankless gas heaters and a hot water pipe that returns to the heaters, we can insert a pump in the circuit but since these heaters start working when a tap is turned on, the first time in the day the hot water is used it will not give immediate hot watter. How can we set it up so we have hot water immediately the first time?
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cocoa222
It'd be great if you could do a video on hydronic systems design. Like designing hot water piping systems for serving radiators for example. Things like how to maintain pressure balance using control valves, reverse-return systems, when to use VFD's and why, 1-pipe & 2-pipe layouts, etc. Love your videos. Keep up the good work.
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It'd be great if you could do a video on hydronic systems design. Like designing hot water piping systems for serving radiators for example. Things like how to maintain pressure balance using control valves, reverse-return systems, when to use VFD's and why, 1-pipe & 2-pipe layouts, etc. Love your videos. Keep up the good work.
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Zak
I really struggle understanding the principles you cover in the usual text books. The videos you produce REALLY help me understand with the brilliant animations and simple way of explaining complex ideas. So thank you. You should produce some simple DIY projects for physical experience with the principles you explain so well!
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I really struggle understanding the principles you cover in the usual text books. The videos you produce REALLY help me understand with the brilliant animations and simple way of explaining complex ideas. So thank you. You should produce some simple DIY projects for physical experience with the principles you explain so well!
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epistte
What is the need for the can between the rotor, unless that means that the rotor can get damp but the stator cannot. I have 2 of these pumps on my hot water heating system. The Bell and Goossett pump is one its last legs and will need to be replaced for this next heating system.
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What is the need for the can between the rotor, unless that means that the rotor can get damp but the stator cannot. I have 2 of these pumps on my hot water heating system. The Bell and Goossett pump is one its last legs and will need to be replaced for this next heating system.
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SK
Thank u so Much for the video! May i ask besides working with concealed water tank, can the pump still pulling the water in (thru inlet) from a (top opening) small plastic water container and pump out water from the outlet in high pressure please? Thank u in advance: )
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Thank u so Much for the video! May i ask besides working with concealed water tank, can the pump still pulling the water in (thru inlet) from a (top opening) small plastic water container and pump out water from the outlet in high pressure please? Thank u in advance: )
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altypeRR
No such thing as centrifugal forces. Its centripetal force. The centrifugal movement you observe is a lack of centripetal force which means it cannot accelerate inwards to remain static due to the linear force imparted into it.
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No such thing as centrifugal forces. Its centripetal force. The centrifugal movement you observe is a lack of centripetal force which means it cannot accelerate inwards to remain static due to the linear force imparted into it.
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Captiiva
I learned more about life from this video then I did my entire childhood. I should probably go write a book about my experience with this 12 minute video now and then retire.
Good job! Was very informative.
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I learned more about life from this video then I did my entire childhood. I should probably go write a book about my experience with this 12 minute video now and then retire.
Good job! Was very informative.
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acair0909
very useful video, the question i have is: in a heating hvac system, where does the circulating pump installed? isn't on return water line or supply water line that feeds the coil from the water heater
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very useful video, the question i have is: in a heating hvac system, where does the circulating pump installed? isn't on return water line or supply water line that feeds the coil from the water heater
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Lukas
Please do an updated video for the AC motors! Would really need that!
Your videos are great, not only for stuying, but also if you're just interested in how electrical stuff is working!
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Please do an updated video for the AC motors! Would really need that!
Your videos are great, not only for stuying, but also if you're just interested in how electrical stuff is working!
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BtO
good evening can I ask why small pumps (10/15 m3 / h) with high efficiency have extremely small impellers and a high number of rotations? in this way do not risk cavitation? thank you boss
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good evening can I ask why small pumps (10/15 m3 / h) with high efficiency have extremely small impellers and a high number of rotations? in this way do not risk cavitation? thank you boss
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Michael
I've always heard that these were wet rotor type pumps, however you didn't illustrate that, so i was curious if the water also cooled the bearings or not. But nonetheless, great video!
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I've always heard that these were wet rotor type pumps, however you didn't illustrate that, so i was curious if the water also cooled the bearings or not. But nonetheless, great video!
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prakash
Big fan of your work. I am a marine engineer(Mechanical) and would like you to request to make a video on grounding check in an LCP. One of the main reason behind failures onboard
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Big fan of your work. I am a marine engineer(Mechanical) and would like you to request to make a video on grounding check in an LCP. One of the main reason behind failures onboard
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Ben
If the starting capacitor was siized incorrectly what would happen? I guess if the cap was too small it would be able to create the required phase shift? What if it was too large?
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If the starting capacitor was siized incorrectly what would happen? I guess if the cap was too small it would be able to create the required phase shift? What if it was too large?
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Ted
Fantastic video. IN North American hot water heating systems (radiator) we usually have the circulation pump on the return side and located at the boiler.
Thank you.
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Fantastic video. IN North American hot water heating systems (radiator) we usually have the circulation pump on the return side and located at the boiler.
Thank you.
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The
Hi, thank for the informative videos.
We are using a circulating pump also in fire fighting water tank, what is exactly the purpose of it?
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Hi, thank for the informative videos.
We are using a circulating pump also in fire fighting water tank, what is exactly the purpose of it?
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Darshan
Please make a video on how to select transistor or ic for projects and how it works. I Like your video and they are easy to understand.
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Please make a video on how to select transistor or ic for projects and how it works. I Like your video and they are easy to understand.
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ImIuli
I'm in the last year and it's great for me to understand from now how pumps, AHU etc works, combined with the material from the class
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I'm in the last year and it's great for me to understand from now how pumps, AHU etc works, combined with the material from the class
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Miktecrep
But I have a question that when I disconnect the motor after it starts it just keeps going on normally until switched off.
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But I have a question that when I disconnect the motor after it starts it just keeps going on normally until switched off.
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vineet
So that's why a capacitor is used, I've been looking for a good answer all over the internet, all this time, now i know it
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So that's why a capacitor is used, I've been looking for a good answer all over the internet, all this time, now i know it
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Rishikesh
Can you plz suggest the steps and capacitors, resistors value of making marx generator also for voltage multiplier
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Can you plz suggest the steps and capacitors, resistors value of making marx generator also for voltage multiplier
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Tamizhanda
What is Battery cycle Sir battery and cycle full explain video upload sir u all video me watching very useful sir
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What is Battery cycle Sir battery and cycle full explain video upload sir u all video me watching very useful sir
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H2OMANLV
As thorough and yet easy to follow a video as I've ever seen! Thank you for preparing such an informative piece!
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As thorough and yet easy to follow a video as I've ever seen! Thank you for preparing such an informative piece!
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AIon
wow. i was not aware the magnetic field shrinks and grows like that. Now everything makes sense. Thank you: )
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wow. i was not aware the magnetic field shrinks and grows like that. Now everything makes sense. Thank you: )
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Jake
Is it weird if i found it really mind boggling how the diagrams go right to left instead of left to right.
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Is it weird if i found it really mind boggling how the diagrams go right to left instead of left to right.
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