Electronic Expansion Valve - How it works ETS 5M HVAC
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- Опубликовано: 27 авг 2024
- Electronic expansion valve. In this video we'll be covering EEV electronic expansion valve to learn how they work and where they are used. We learn basic refrigeration cycle, compressor, condenser, evaporator and different types of expansion valves.
Correction:
06:15 The bulb refrigerant expands to OPEN the valve, not close the valve. Letting more refrigerant in.
06:22 CLOSE the valve, not open the valve
⚠️ Watch PART 2 here
Danfoss Expansion valve discussion: ➡️ bit.ly/3jGi0y1
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Thank you for such great animation examples. I still claim that it's your channel that got my to fully understand 3phase electric. Thanks for all your hard work.
Please make one about pulse valves 🙏
Very nicely animated. Only there is a small mistake. in the valve, the rotor and axle rotate but should stay in place in order to make the valve move along the threaded axle...
I’ve been an HVAC tech for close to 20 years now and I still seek out education and watch various RUclips channels. This is one of the absolute best!
this channel does sponsorerd videos the right way
This has been one of the best explanation of a expansion valve I seen in the 45 years I been in the HVAC field .
Honestly this video was more educational than i got in school. Great pictures, great quality, great diagrams, English is clear and understandable, all around great vid. Need more like this on Turbines, Industrial refrigeration and more on electrical/pneumatic controllers.
Amazing job by Engineering Mindset!
This is my favorite Electric channel.
The best video on how electronic expansion valves work! Keep up the good work! 👏💯
Once again, you've presented material in a video that's easy to understand by giving the viewer that "OOOHHHH" or "AAAAHHHH" moment! Obviously this new valve's technology will allow a much more finite adjustment of freon for a more constant temperature. I LIKE IT!
Just after 6:00 of the video prompted me to scratch my head and review how these expansion valves work. I was puzzled when you said the TXV reacts to close down when superheat is too high, and open when superheat is too low. This is backwards compared to what I would expect, since high superheat is crying for more refrigerant flow, and low superheat puts the compressor at risk of receiving liquid refrigerant if flow were to increase further. Fortunately there is an excellent video describing this in more detail, done by the same author, titled "How TXV works..."! I believe that video explains the process correctly, high superheat leads to the TXV OPENING, increasing flow, not closing down. Then I opened the video description here and saw that you already acknowledged that minor error. It's too bad we can't do RUclips annotations any more. Correcting that on the screen at the time stamp would have been much more clear.
Totally agree, I've requested the feature many times. As an educational channel we really should have the ability to edit such a simple mistake or at least make it easier to annotate. Obviously if it was noticed shortly after publishing we could re-upload but now there are thousands of websites linking to this video so it's too almost too late.
Sir: Have not heard from you in some time. Always welcome information.
Wonderful graphics. thank you
Because of this page, I open RUclips channel.. We want a video discuss about renewable energy (solar systems)
I'll partake in that discussion. Is it you want more,want the gov not to punish people into using it,want people to be force to,or are ya one of those that really thinks things through and are upset that while claiming that they want to do it,they still allow oil companies to buy up all the patents for batteries and other storage devices that would be pivotal in moving toward using mainly renewable energy? I do want use to switch,but I look at it like this,I want a new home,but at the moment I have no idea how I will be able to get one. So how about I burn down the home I'm living in,and then worry about IF I can find a way to build another or buy another. That's how I view what some people want done today. Instead of making sure it will be enough to sustain us before we switch to it,they say just switch and then worry about if it will work. I like the idea of changing the patent laws for inventions that could possibly "save the world" I want those people to still get rewarded for their inventions but not be allowed to hord the patents and hide them from the world. Most people don't realize that alot of what would be needed to move away from fossil fuels were already invented but bought up by the very same oil companies that it could put out of business. I personally would love to have my home using renewable energy and it be basically free,but I would not want fossil fuels to be done away with completely. I also dont want any government forcing people to make the switch,or trying to find ways to punish you until you do. Also and this is most important,never allow the gov to control or run the fossil fuel alternatives,ever!! People think that our electricity Bill's could be free if we use renewable and the give can make sure it all stays up and functioning. That's dumb,clearly the best way to help people and the planet is with innovation,that's the only solution to this problem "climate change,global warming,ice age or water world" whichever claim alarmists are making,the only solution is and will always be innovation. I hope most people have been able to learn that once you have a gov regulation or allow them to dictate their will onto an endeavor it immediately kills off all innovation,it has to. If I start a pizza shop and it isn't doing great but ok,and I leave that business to my kids with orders or "dont change anything" then when a new problem arrives and requires a new way if dealing with it,they cant. You have to allow private people to keep finding ways to improve. That goes for everything. Not allowing change is not allowing advancement. I would live to see some of the batteries that people are not allowed to make due to IP laws. I would love to see every house have a roof made of solor panels,and the panels made in a way that didnt enslave foreign children,or destroy the environment worse than the fossil fuels ever thought of. I would love to see more nuclear power plants built with every possible act of god planned for. I would love to see a 10$/month electric bill or no bill. But above all,I would still like to see other having the freedom of choice. The right to chose what way of living is best for each individual. I believe that if the gov stays out of it,people will invent and flock to the technology that improves their lives and the planet's. If we allow innovation people will gravitate towards what's in their best interests as well as their great grand kids intrest. Just my Hope's and opinions,thanks for hearing me out. Please let me know what you think,what you disagree with and why,and what you hope to see in the future. Have a great day.
Thank you for all the videos. 💪🏼
Thank you, big fan of your work!
I would like to suggest a future video. Correlation between the EEV and an inverter compressor as well as more details on EEVs and PID control. (and how all these can be observed on a monitoring system).
Again thank you for your video. Very clear and punctual! Keep them coming!
PID control would be a huge one for me, how the refresh rates for each part of the control loop effect the process, when the control loop is normal acting or reverse acting and so on
this page has taught me so much and given me a tonne of confidence with my role. I thought that a change of career into fridge/hvac would've been a difficult one and it looked daunting as hell at first but you've helped massively. Big thank you.
This is one of the best education channels I have found to be very useful especially when it comes to new technologies and innovations. Thank you!
That's a brilliant decoupling of the two separate things that might need repair.
Wait until the damn valve gets clogged :/ That translates into a new coil last I experienced with a Trane a/h IIRC.
@@sprockkets Ah yes, the good 'ol Trane expansion valve problems. The only thing that stops a Trane is it's self. It's a shame when people spend all that money on a Trane and then it goes down. But of course, before you count the valve down and out, you must run the special sauce oil additive from Trane to see if that fixes it. I know fixed orifices aren't the most efficient, but they just work. If it gets clogged, you can clean it no big deal.
what a great way to explain the EEV function!! thanks guys!
Thank you for this video.
I am reading the Refrigeration and Air conditioning Technology(9th edition) and this video explained everything on Electronic Expansion Valve in visual and simple way.
Glad it was helpful!
Very well explained, thank you very much.
Thanks a lot, it's very clear and well explained I have truly learned something today.
Popped up on my homepage, curious to see how an expansion valve works, and what an amazing video. I love videos like these, as you feel your skill level increase after watching. Just another thing in your toolbox for when and if you come across it.
You've expanded my knowledge.
This was really good. I never knew the finer points abour refrigeration.
Hey, @TheEnggMindset, plz make a video series o circuit solving. It's a humble request🙏🙏🙏
Refridgerant doesn't actually spray through an orifice as a part liquid gas. It flashes to a low pressure liquid and starts boiling to a gas evenly across the beginning of your coil being almost all liquid at the orifice and all gas at the vapor line exit. If you're undercharged you get liquid gas mix at the orifice and it boils rapidly pulling a lot of btu's and icing your coil.
refrigerant
Very well explained 👍🏻
This video made it stupid easy to understand
nice and clear explanation …great work!
Out standing teach
please could you also make a video on gasoline generator for us, thanks so much we appreciate and love your efforts
This is the pickiest of nit picks, but R410A's color scheme is pink, and the refrigerant it replaced, R22, is the green you've depicted.
It is a pity not to use the SI system in the videos ...
Keep up the good work.
Thnxs more Nd more eng mansour from Iraq
very satisfying to learn..
I worked on a system in which the expansion valve was a simple solenoid valve. It was constantly opened and closed by a PLC according to temperature readings.
Wasn't linear control though
You have a slight error in your schematic - the refrigerant always enters the condenser from the top, not the bottom, that way the gas can stay on top and as it cools into liquid and the liquid gets pushed to the bottom. And then the liquid enters the expansion valve and the evaporator from the bottom, not the top as you pictured it, that way as it warms up turns into gas the gas can escape from the top leaving most of the liquid on the bottom of the coil
Plz regularly upload the videos
Well explained
Got to work on one yesterday. I wish they put the ohm ratings / temp chart for all their thermistors on the door as a sop . Its annoying
Nice video, thanks! Nevertheless, I would like to mention a point: the expansion process in a refrigeration cycle is not like a spray of a liquid. While the expansion creates a mixture of liquid and vapor, the spray doesnt form any vapor and it is just a mechanical process.
See our new video on how to build mechanical versions of electronic circuits? Watch here: ruclips.net/video/Zv9Q7ih48Uc/видео.html
Very informative and helpful video! Thanks
Very interesting. Thank you!
Excellent explanation!
Great video! Very well explained
easy to understand, thank you very much
ive seen alot of termostatic expansion valves that have failed as an hvac technician but never have i seen an EEV to this day fail
Really ?, it's been the opposite for me.
@@Boraxo weird we work mostly with mitsubish heat pumps and never hade to replace an EEV although reversing valves have had a lot of problems
Great great video thanks
Great job and video like always
Thank you
great video as always, i really enjoy your videos
Good tutorial 👍
Wow good interviews
Sir plz every refrigerant related videos plz explain in Hindi
www.youtube.com/@EngineeringMindsetHindi
I have questions about e e v? Can you explain
Thank you a lot! very intresting!
Brother gave a video covering the entire activities of the flip flop circuit. I'm suffering a lot from it. If you help me, I will benefit a lot. I don't understand which lamp will light up first if you use current in flip flop circuit first ..... please present this a little nicely. Good luck to you !!!!!!!!!!
Great video! Would you be able to do one on the Automatic expansion valve, AXV AEV also known as the Constant pressure expansion valve. I have found very little animation on this one. Thank you
Great Video! But can this also let the compressor be always operating and reducing its lifetime? instead of installing a variable speed compressor that reduces speed and operating cost. How we can combine these two points (reducing flow from the valve or from the compressor).
Helpful
M having problem in this type of eev.
In stopped unit eev are internal leaking which cause sweating on panel body.
Even after replacing whole expansion valve still same issue.
It's a vrf system where some indoors are working and those stopped are getting dew on the panel grill body
Thnx..
super and thank you....😊
Great video
Cool video ( no pun intended)
Do expansion valves "unload" the compressor by shutting down refrigerant flow under low load conditions? All the high SEER conditioners have them, but I'm trying to understand why an expansion valve is better than a fixed orifice metering device.
Superb 👌🙏👍 can u help me with how rotation is converted electric energy n charge battery as in windmill
Seen our new - How wind turbines work video? link: ruclips.net/video/Hf875eOVrVI/видео.html
In 6:21, why the valve closes when the refrigerant expand which means the refrigerant in evaporator outlet is hotter and cooling load increase?
he made a mistake. the diaphragm will be pushed down which will open up the valve more and let more refrigerant into the evaporator.
If you look at the animation, the pin in being pushed down which would open the valve to let more refrigerant in. I've accidently said it closes the valve. Apologies for the confusion. Correction will be included in the video description.
Regarding TXV's: At Time 6:15, Did you mean to say that as superheat increases the valve is closed and vice-versa? This seems to contradict what I am learning in school.
he told them in reverse. the valve will open up if the superheat increases.
If you look at the animation, the pin in being pushed down which would open the valve to let more refrigerant in. I've accidently said it closes the valve. Apologies for the confusion. Correction will be included in the video description.
@@EngineeringMindset I always learn an incredible amount from your videos! I learned how TXV's work watching one of your previous videos! I thought you had misspoken. Not being snarky. I'm still on pretty shaky ground regarding HVAC thus my question. Thanks for being much cleared than my college instructors (let's keep that between us!)😉
Good clip thanks
Starts at 6:55 for hvac techs.
Hindi medium video upload kijiye sir ji
High, is it possible to see the permanent magnet position from the outside? I try a compas but it works only for a few steps.
Gr Ron
If i want to change EEV do i need to get the compressor gas out ?
Excellent
Sir cold room electrical panel wiring. Compressor terminal connection pls
Very Fresh
Hi Paul, congratulation for this so awesome animation. Can you please share wich tools do you use to create such animation. I would like to use such tools to create something similar but for human anatomical animations. Thank you in advance for advices!
Have I understoof this correctly? The target super heat is stored in the PID/controller, the evaporator valve will increase or decrease the flow and hence pressure to match this stored value? Or is the super heat value simply the error and should always return to 0?
what are the differences and similarities between expansion valve and calipilary tube?
A cap tube is just a type of fixed orfice
If eev is regulating the flow of refrigerant then how we regulate the compressor discharge pressure kindly make it clear.
Why my ac downot cool as my outdoor unit is in open sunlight of 35 deg approx n what 2 do
06:20 I believe there is a wrong explanation because when the superheat is too high the valve should open and vise versa.
We definitely don't adjust the txv on every service call. And personally I don't like those electronic expansion valves. Txvs all the way!!
I'd much prefer to stick with a fixed orifice ! Simple and fault-free !
Good video. Mostly accurate.
3:11 Bike pump gets hotter as it compresses air to force into the tyre......
Good job it does really - as otherwise your car engine wouldn't work.
Plzz make a video about bldc motor
Check out the new BLDC Motor video: ruclips.net/video/yiD5nCfmbV0/видео.html
Why not use a fixed size expansion valve with a variable speed compressor? BLDC / PMSM motors with controllers are almost commodities at this stage and can offer greater efficiency than traditional induction motors.
Check out the new BLDC Motor video: ruclips.net/video/yiD5nCfmbV0/видео.html
I like this video 👍
Thank
Please i need refrigerant chart
I like it
i have got a: kodak esp c315 all-in-one printer..... why windows 10 do not support it?. where can i find the DRIVER? i really need your help.
Does anyone know of an electronic expansion valve that is made for ultra low temperature Chillers? I used a Sporlan but the superheat controller would fault out if my suction pressure drop below zero PSI or if my suction line temperature dropped below -59 degrees F. After it faulted the expansion valve would close completely when I ran the controller in manual mode I was able to fine-tune the EEV to 25% open and was able to achieve -85 degree fluid temp
Is there a button for double like
شرح رائع
Can this new electronic expansion valve be used on a existing home a/c unit in place of a mechanical expansion valve?
Thank you for your great information
جيد جدا
tq
The controller has no way to know what the absolute linear position and range of the valve is, so during first startup there's a chance it's totally off the mark and possibly damaging other components?
On every startup they just go full closed position (same as at the end of working cycle).