Reversing valve - Heat Pump. How it works, Operation.
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- Опубликовано: 31 май 2024
- In this video we take a look at how a reversing valve works in a heat pump, we explain the basic operation of a split system air-source heat pump as well as a look at heat pump reversing valve construction.
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I am big fan of your work and it is really appreciable
Heat pump is good
very good video for the 4 way valve
Gotta love it how a reversing valve is driven by a tiny reversing valve
Tankyou welcome
That's so neat that your four port reversing valve has a tiny four port reversing valve of its own!
I'd like to compliment you on your great resource. This was a great learning aid 👍
Thank you so much, great help! I'm currently going to school for HVAC and this video helped me understand the Reverse Cycle better...
Have you graduated
One like is not enough for this video....
Extremely helpful for total beginners.. thank you soo much.
for anyone having to Braze/solder in Reversing valves, the U-bend inside the reversing valve is made of nylon, for the most part
Really helpful video for understanding. Thank you 🙏🏻
The videos in general are awesome and for school purpose are good too. The mistake in changing from hot to cool and the slide on the reversing valve doesn't move at all was a little bit confusing but I got understand and I also see some comments below that mentioned that. If you can improve a little bit more would be interesting for all hvac classes ON. Thanks.
This video was wonderfully educational!
Thank you bro ..from Kenya really enjoyed the tutorial
Hello, im an hvac tech.here at saudi arabia. Thank you so much for this video.. it helps me a lot understand bout heat pump. Since in the philippines we didnt use that on airconditions. God bless you guys for helping and.sharing more.info on us.
Arabic version here: ruclips.net/video/tITvT5fgbMo/видео.html
i think there is a small mistake in the simulation < that in cooling the moving body stay at the same position while it,s should move to the left and allow the refrigernat to go to the condesnser
Hello, yes, I did apologies in the video for the mistake. Well spotted though you were paying attention to detail, I like it.
@@EngineeringMindset it's the whole principle of the video. You may as well have not made the video
Thanks for this. I was curious how my countertop icemaker so quickly drops the ice and came here. Now I know 😊
Thank you :)Please keep uploading your wonderful videos.
Very well made mate! When I found a job I will defiently give you that coffee you been thinking about.
Helluva illustration mate 👌🏽
Thank you for this explanation. This will definitely help me understand my Ground Source Heat Pump system design!
The Engineering Mindset good performance
Thank you for the explanation. Very good video. Very informative.
Thank you so much! Great video! Really valuable information!!! 😊👌
Excellent vid and simply explained
Thank you very much please keep the videos up
Hi.. Thanks for the great explanation on heat pump....What can we do in case if we use distributors on the evaporator?
How the flow will be reversed correctly as there will be leads connecting the evaporator and expansion valve?
I would like to know the set up for the higher capacity units. Looking forward to your response.
Super great video thank you!
ts so helpful to learn just the way the reversing valve works. it allows to reverse cycles for both heating and cooling. The way it works the reversing valve it has two insede slide valves that it all depends what your calling for (heat or cooling)its going to close a side of the valve and open the other one closes.
Great tutorial.... thank you ❤️
Very good video, thanks!
Excellent video. I knew it reversed flow to change from heat and cool but had know idea what made it reverse. Thanks i doubt I’ll need it but interesting either way
very very help full thanks
Thank you. A great video.
This was a great explanation... I've been dealing with a mini split I just installed and the fan on the outdoor unit does not kick on allowing the unit to overheat and shut off. BUT... when I power off the inside unit... It comes on for about three seconds...I can't figure it out
Good information, thanks
Great movie, thnk you so much for this
Woe great explanation
Great stuff 👍👍👍
thank you for the video.. thumbs up bro...!☆☆☆
Recently one of these failed in our 6 month old Mitsubishi Ecodan R32 ashp. The whole outdoor unit needs to be replaced, as these valves are brazed into the pipework and can't be repaired easily in situ.
Very interesting video, thanks!
Great content !!
Thank you! Good video
3line down center comper1st 2nd3rd outwr top compersor line revas line .
Thanks a lot
Thanks sir
Hi, In cooling mode, when the cooling cycle ends and the compressor is turned off, is the reversing valve typically held on (so that it doesn't slide back under the residual pressure) or is it typically disabled (open circuit/power down) along with the compressor? I.e., is the reversing valve solenoid typically on all summer, or just when the compressor is active?
Thanks
Remarkable 👍
Damn good thnq🙏
The indoor unit freezes during the heating function. Everything is fine in cooling. Is the problem a blocked four-way valve?
Thks
Nice
can i share this video with my class room ?
So ice makers use this as well. When it goes from building ice, once the desired ice size is met on the evaporator fingers or trays. The reversing valve switches from freezing to heating the evaporator momentarily to drop the ice off the fingers or tray into the bucket or ice catch tray
Absolute class! Paul can you make a video on ELECTRONIC EXPANSION VALVE ,which is used in VRF SYSTEM
Here you go: ruclips.net/video/XHtRHiKIsEU/видео.html
New VRF unit video here:➡️ ruclips.net/video/4i1XgcP1tmw/видео.html
Great!!! Thank you for your detailed explanations. I want to join your team. What shoul I do?
Hi please I want to know how can I rectify leaking in the coil of the evaporator in the central AC unit
Best regards
In relation to the compressor at what height should this component be at?
I ask this because most small systems they are above the level of the compressor, and there is a chiller which this component keeps failing where it's in line with the bottom of the component.
Another question in relation is because it's low in the system would oil not get in and somehow block operations.
Nice video
Hi. I i need to selct a reversing valve for y heat pump, what are the key paramezters beside the capacity. I check that the capacity requirement is fulfilled however I have very high velocity in suction line (during heating) and the datasheet specification of 4-way valve does not mention any velocity but the pressure ranges (which also meet the system requirement)
Can the valve be shifted during compressor operation without damage
Is there any video of chilled water pump designing and pump horse power calculation
Hi Bryan how r u! I got questions I do get it hot gas come from discharge through capillary to shift reversing valve but where is suction line gas come from? Because I see the flow in video suction gas is not come from common suction line, low gas flow back to common suction! Where low gas come from? It’s doesn’t look like to from common suction? Thanks
What is the position of solenoid in both cooling and heating mode?
If its a TXV X-pansion Valve then where does the bulb belong? Check valves? Far away Tubes? Where?
Thank you for the Information & Good quality video about the Reversing Valve Cycle.
It would be much Nicer if you can move the mouse Slowly because Specially for beginners to put attention in what you're saying and try to follow up with the mouse moving to fast It's Really difficult to Focus on it, & also the mouse Color would Nicer if you can change the Arrow to a Black color sense must the time the background it's White.
Thank you again !,
what happens when a check valve misfunctions? I am having an issue in my home in the heat cycle only where when the unit cycles off, I get an intermittent hydraulic hammering for maybe 5 seconds. Only during heat, and most online sites I am reading point to a faulty check value on the indoor unit. What is going on in this instance?
Great video .... One question ... there would be a great heat exchange inside the reversing value as two different temperature fluids are made to pass side by side... ? what do u think ???
I think you're right
Marius Botha
1 second ago
No, think carefully.... there is no liquid (other than a very minute amount of oil present) only hi pressure vapour. I f you have hi pressure liquid there then you are in great danger or the piping on the unit is very very wrong.
Should these make noise when shutting down?
hi dear , one mistake in video in cooling mode (( start at 06:48 ))__4 way valve loop for cooling no chang in video from heating to cooling ,, please repair this mistake because your video very nice easy
What would be the ratio of refrig. to gas coming out of the TXV in the heating mode.
Thanks,...... great demo.
James Rockford a
Is it correct, I could use the cold of the night for cooling and the heat of the day for heating, with one device (Reversing valve)? I'm fairly new into this.
You new a few other components and some controls but yes. You can use this to provide heating or cooling in almost any weather. Even when cold out you can use it for heating
So the O wire from the out door units control board would run to that cilinoid, and is energized when the T-stat is set to cool. If it is set to cool and the O wire is pulled the unit should switch from cool to heat. And if that doesn't happen the reversing valve has failed. Sorry, if this seems like I'm teaching, I'm actually trying to get the diagnosis process down in my own head so I can figure this out for my costomers.
Sir,this kind of valve,can I use for immediate defrost the cooled plate about -25*c.Where can see this inter market?Any sugg
you should contact a supplier such as danfoss they will be able to better advise
2:00 mind blown
The problem in a ac with reversing valve when it got old some dirt from burnt oil from compressor clogs the pipe and gives a hard time for it to move and soon without you knowing it will get spoil
Parfact
My Gree Hansol does the defrost many times a day even when there is not even a smallest sign of ice on the coil. Why it is doing like that? Please help!! When the outdoor temp is around 3-4 C° everything is fine. It can run all day. If the outdoor temp drops at -1- -2 C° it does that 10-15 times a day, but no sign of ice on the outdoor unit.
I notice the slide inside the reversing valve for cooling didn't move. Now that confused me. The right side should be uncovered
Hey Paul, where your from mate? New Zealand, Australia?
There is a mistaken in the drawing in "cooling mode". The black moving part in the reversing valve should be drawn to the left site in stead of being in the right side, what is not so in the drawing. So it is advised to do this, to better understand the drawing. Nevertheless the gasflow side is correctly indicated.
Thank you for the correction. We did apologise during the video for the mistake and many people have also commented this in the comments section already
How much ton to stars in chiller system
So it’s really a “heat pump” whichever direction the refrigerant is flowing? It’s just that the condenser and evaporator are swapping their tasks over in the heating mode. An air conditioner and heat pump are two names for one device. A reverse cycle capable air conditioner?
Can you talk about VRF systems in detail?
Hey icey junior. It's been a while. We had to remove our VRF series but we'll republish asap.
The Engineering Mindset Alright. Looking forward to it!
New VRF unit video here:➡️ ruclips.net/video/4i1XgcP1tmw/видео.html
New valves are "bistable", the coil never stays energyzed, power impulse activates it instead. They are not spring loaded.
Hello.
Why my heat pump only blows hot air inside and cold air outside.
Seeing as I have 8 minutes and 42 seconds of experience on the subject, you should trust me when I say your reversing valve solenoid is failing to energize when a call for cool is issued by your thermostat.
I don't know what sort of unit you have but it could be a simple as replacing a capacitor.
Best thing to do is call an HVAC specialist to troubleshoot the valve.
Advie Dx cawn air handling unit instaling and pipeing video uplod
No, think carefully.... there is no liquid (other than a very minute amount of oil present) only hi pressure vapour. I f you have hi pressure liquid there then you are in great danger or the piping on the unit is very very wrong.
sorry, wrong post....
How to work check valve
8.41m i understanded what i didnt in 4year
cOOLEST VIDEO EVER
Learn *HOW HEAT PUMPS WORK* here: ruclips.net/video/QykwWs3L1W8/видео.html
You are missing the accumulator before the compressor
Luis Brenes there are many parts missing, it's just simplified to make it easier to understand the basic operation
The Engineering Mindset could you kindly please make another vdo(s) for advance learners with actual cycle comprising of every possible components. Thank you. impeccable work as always!!
Correct your animated Diagram ....Note your reversing valve behaviour
meow
Way too confusing of an explanation. Could have been better.
It's really easy to understand and well explained, I don't know what you are talking about.
Thanks very helpful....you explained it better than my professor...have increased my knowledge ever since I have subscribed!!! Keep them coming!
Hey Mike, Glad we could help and you enjoyed. Congrats on first comment too!. I see from your vid you've got a lot of boilers and calorifiers in your building. Check out a company/product called circosense.com, it would save your building a good amount of energy & $$$
Thanks for the inf...I will relay it to my management...