How a boiler, fan coil unit, air handling unit and pump work together HVAC - Heating System
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Date: 2023-11-17
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Comments and reviews: 27
Rick
First, I want to thank you for the great video. There is a ton of great information and it is presented well. I recommend this video to my students when they are studying commercial hydronic systems because it does such a great job of introducing them to this type of system.
I do have one quick question. In your drawing, you have the expansion tank connected to discharge side of the primary loop pump. I have always connected the expansion tank on the suction of the pumping station to preserve NPSH. I am curious why you have it set up like this.
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First, I want to thank you for the great video. There is a ton of great information and it is presented well. I recommend this video to my students when they are studying commercial hydronic systems because it does such a great job of introducing them to this type of system.
I do have one quick question. In your drawing, you have the expansion tank connected to discharge side of the primary loop pump. I have always connected the expansion tank on the suction of the pumping station to preserve NPSH. I am curious why you have it set up like this.
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Samuel
Hi Paul, excellent video. As I've said in a prior comment on another video: your content is so useful to new mechanical engineers and I speak from experience. Something that you mention in this video is the dosing pot which got me thinking about chilled water (and heater or chiller heat recovery) water treatment. Do you have much experience in softening and controlling water quality, including legionella and other diseases, etc. on these systems and if so have you considered making a video on it? Many thanks for all the great content, Cheers!
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Hi Paul, excellent video. As I've said in a prior comment on another video: your content is so useful to new mechanical engineers and I speak from experience. Something that you mention in this video is the dosing pot which got me thinking about chilled water (and heater or chiller heat recovery) water treatment. Do you have much experience in softening and controlling water quality, including legionella and other diseases, etc. on these systems and if so have you considered making a video on it? Many thanks for all the great content, Cheers!
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carl
Thanks for the video, please keep it up.
Please explain the whole STEAM system/plumbing, such as valves, pressure reducers, strainers, steam trap, condensate pumps. How they work and how to identify any problems and ware.
What direction they flow, supply and return. Also what is inline with the supply, as well what is inline with return.
What more is there to know about STEAM and how it works?
Gary Gleason is great, I just cannot find any training videos from him.
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Thanks for the video, please keep it up.
Please explain the whole STEAM system/plumbing, such as valves, pressure reducers, strainers, steam trap, condensate pumps. How they work and how to identify any problems and ware.
What direction they flow, supply and return. Also what is inline with the supply, as well what is inline with return.
What more is there to know about STEAM and how it works?
Gary Gleason is great, I just cannot find any training videos from him.
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education
Could I please ask what could be the possible reason(s) that some flats in the building doesn't have hot water while others have. For the flats that doesn't have hot water, the hot water comes for 30 sec than gone completely. Some suggested this is due to debris in the water circulation and would need a power flush. Would that work? Esp would the power flush cleans the part between the central loop and individual HEU? Many thanks for your answer!
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Could I please ask what could be the possible reason(s) that some flats in the building doesn't have hot water while others have. For the flats that doesn't have hot water, the hot water comes for 30 sec than gone completely. Some suggested this is due to debris in the water circulation and would need a power flush. Would that work? Esp would the power flush cleans the part between the central loop and individual HEU? Many thanks for your answer!
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sandyleewhite
Can you please explain, why a 5 level apartment condo complex, be colder on the top floor, and warmer the further down the floors? We have 1 boiler, (used to have2, and this boiler is located on the roof, in an enclosed area. Does the water get distributed to the lower area of the building 1st possibly, and then does not have enough water for the top floor? Any response you could provide would be greatly appreciated,
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Can you please explain, why a 5 level apartment condo complex, be colder on the top floor, and warmer the further down the floors? We have 1 boiler, (used to have2, and this boiler is located on the roof, in an enclosed area. Does the water get distributed to the lower area of the building 1st possibly, and then does not have enough water for the top floor? Any response you could provide would be greatly appreciated,
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cone
I have been exploring an abandoned 1975 office block which has all its original machinery in the roof and basement. These videos really help work out what's what. This one seems to have an air ionisation feature and a rotating roll of filter medium. All very interesting to me! Thanks for the vids!
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I have been exploring an abandoned 1975 office block which has all its original machinery in the roof and basement. These videos really help work out what's what. This one seems to have an air ionisation feature and a rotating roll of filter medium. All very interesting to me! Thanks for the vids!
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Jo
I can't wrap my head around how the water coming back from secondary return doesnt get sucked back by secondary pumps again? I mean there are pumps pushing the water certain way but when two streams interact how do we ensure that the net flow is in the direction we want? Doesn't it go back sometimes?
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I can't wrap my head around how the water coming back from secondary return doesnt get sucked back by secondary pumps again? I mean there are pumps pushing the water certain way but when two streams interact how do we ensure that the net flow is in the direction we want? Doesn't it go back sometimes?
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vipul
The video was awesome: ) can you make a video on types of valves used in Hvac pipe layout, their uses, n can you explain them via schematic.
can you also explain more about the relationship between pressure, velocity & flow cuz this confuses a lot: )
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The video was awesome: ) can you make a video on types of valves used in Hvac pipe layout, their uses, n can you explain them via schematic.
can you also explain more about the relationship between pressure, velocity & flow cuz this confuses a lot: )
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ChefJon
Ive been doing water testing as a laborer in a similar system. This video helps makes sense of all the machinery around me. Im just a laborer but hope to be an apprentice or journeyman when the opportunity comes. Thank you!
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Ive been doing water testing as a laborer in a similar system. This video helps makes sense of all the machinery around me. Im just a laborer but hope to be an apprentice or journeyman when the opportunity comes. Thank you!
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Antnio
Hey, great video! Just one question, when should it be used a common header (Low loss header ) and when should it be used separate headers for primary flow and return flow? Thank you and keep up the good work!
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Hey, great video! Just one question, when should it be used a common header (Low loss header ) and when should it be used separate headers for primary flow and return flow? Thank you and keep up the good work!
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Luke
Excellent video and presentation with real life examples too. This is the best 13 minutes of CPD ive had in all the hours ive wasted on other CPD! Keep up the excellent work! cheers, Luke
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Excellent video and presentation with real life examples too. This is the best 13 minutes of CPD ive had in all the hours ive wasted on other CPD! Keep up the excellent work! cheers, Luke
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Frank
I work in a building for 7 months now, i want to be a chief engineer, your videos help me so much to understand about chiller, boiler etc.
You are the best, thank you so much again!
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I work in a building for 7 months now, i want to be a chief engineer, your videos help me so much to understand about chiller, boiler etc.
You are the best, thank you so much again!
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Frank
Does a domestic potterton floor standing kingfisher BOILER have an FCU AND WHERE IS IT SITES. NERVER HEAD OF IT been given a c2 rating by electrician carrying out an EICR
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Does a domestic potterton floor standing kingfisher BOILER have an FCU AND WHERE IS IT SITES. NERVER HEAD OF IT been given a c2 rating by electrician carrying out an EICR
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Artur
Would be cool to see the calculations to this system, as well as to go deeper into the pressurization unit on how it works. AWESOME stuff though. Thank you
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Would be cool to see the calculations to this system, as well as to go deeper into the pressurization unit on how it works. AWESOME stuff though. Thank you
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L.
Do you have a video on the difference between a 2 pipe system and a 4 pipe system?
Meaning that a FCU coil an rather be cooling or heating
Thanks
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Do you have a video on the difference between a 2 pipe system and a 4 pipe system?
Meaning that a FCU coil an rather be cooling or heating
Thanks
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A.
Sir need is to see that to do with the water 7 big tanks and let out 2 inch pipe pressurize for process to be run by 24 hourse and water out 90c
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Sir need is to see that to do with the water 7 big tanks and let out 2 inch pipe pressurize for process to be run by 24 hourse and water out 90c
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fdggfgdfgd
Regarding the header. how does the water choose to go where it wants. ?.
Do the individual pumps steal water from the header?
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Regarding the header. how does the water choose to go where it wants. ?.
Do the individual pumps steal water from the header?
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m77ast
I studied engineering at uni but been working in business but now getting back into engineering (my first love) enjoying your videos
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I studied engineering at uni but been working in business but now getting back into engineering (my first love) enjoying your videos
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Ashley
Can you explain the difference between a boiler feedwater pump and the primary/secondary hot water pumps? Thanks! Great videos!
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Can you explain the difference between a boiler feedwater pump and the primary/secondary hot water pumps? Thanks! Great videos!
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Asem
Thank you sir for your great efforts these info are excellent and clear
Please continue in the field of hvac system
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Thank you sir for your great efforts these info are excellent and clear
Please continue in the field of hvac system
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80MileKyle
Dude this was amazing. Thank you so much for showing real photos of the components you explained on the model.
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Dude this was amazing. Thank you so much for showing real photos of the components you explained on the model.
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MrRaefel12
Im trying to understand why commercial building would need heat pumps and a boiler system for space heating
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Im trying to understand why commercial building would need heat pumps and a boiler system for space heating
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Nirayo
Thanks for good explanation and if you could please explain as domestic heating system with two floor or three.
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Thanks for good explanation and if you could please explain as domestic heating system with two floor or three.
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Andy
I would love to learn more about decarbonization options for commercial customers currently using gas boilers.
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I would love to learn more about decarbonization options for commercial customers currently using gas boilers.
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NICKLE&
Thank you great video! I have a question tho the boiler water and domestic water are two different loops?
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Thank you great video! I have a question tho the boiler water and domestic water are two different loops?
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education
May I ask why you didnt include water line to sink, shower going out from colorifier in the 3d model?
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May I ask why you didnt include water line to sink, shower going out from colorifier in the 3d model?
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Josif
New grad engineer(not HVAC, but got a jr eng role with an hvac company and this is helping a lot. Thanks
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New grad engineer(not HVAC, but got a jr eng role with an hvac company and this is helping a lot. Thanks
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