The refrigerant enters as a liquid at the expansion valve, and the liquid does not undergo a change in temperature as the cross-sectional area decreases. It's the gases that are affected by the change in cross-section. Please reply if you have an explanation.
@sbalamurugan886610 ай бұрын
Nice explain it's a car expansion value right?
@zebralearnings10 ай бұрын
The expansion valve is used in many ac equipment. Car and household ac.
@chrismiller84212 ай бұрын
Greta video
@zebralearnings2 ай бұрын
Thank you
@stoneheart96797 ай бұрын
Hi sir, My question is if the temperature on the sensing probe is higher the more refrigerant is pushed into the evaporator does it affects the cooling temp as the pressure is also decreased, for example we blow air out of our lungs with little more wide open sends the little more warm air in the comparison when its closed more and cooled more. Thanks
@zebralearnings7 ай бұрын
I'm sorry, I didn't quite catch that. Could you please repeat it with more details?
@GladstonAlmeida86674 ай бұрын
Plz do explain about guage in PSiG Settings of Manuflod guage...
@ΒασιληςΜπομπογιαννης6 ай бұрын
πολύ ωραίο το video.Σας παρακαλώ πως μπορεί να διαπιστωθεί ότι η expansion valve λειτουργεί χωρίς να ξειλώσουμε το ταμπλό
@zebralearnings6 ай бұрын
Μπορούμε να το διαπιστώσουμε ελέγχοντας την τιμή της υπερθέρμανσης και της υποψύξης. Θα το εξηγήσω αναλυτικά σε ξεχωριστό βίντεο.
@masudrana-h5b4s6 ай бұрын
❤❤❤
@zebralearnings6 ай бұрын
❤️❤️❤️
@Rosimosi066 ай бұрын
So the thermal bulb on the evaporator is also the as the thermal bulb on the condenser? Same function?
@zebralearnings6 ай бұрын
There is no thermal bulb on the condenser.
@ΒασιληςΜπομπογιαννης6 ай бұрын
Ευχαριστώ. Επίσης πως διαπιστώνετε ότι από την expansion valve διαφεύγει το φρέον χωρίς να ξειλώσουμε το ταμπλό
@vn81625 ай бұрын
@0:40 the refrigerant is not compressed, if it is being compressed then the pressure and temp will increase.
@AbdulWahab_lr2gb5 ай бұрын
Sir plz tell us that when the room temperature is maintained and expansion closes, then it recharges automatically with refrigerant or we we have to replace extension valve time to time?
@MRBro-nq9vr8 ай бұрын
What will happen if there is any liquid content also on the discharge side of the evaporator? How sensing bulb helps this?
@zebralearnings8 ай бұрын
The compressor designed to compress only vapor. So, if there is any liquid refrigerant in the evaporator, it will damage the compressor. Sensing bulb will send the proper amount of refrigerant to the evaporator. So, the refrigerant can evaporate and change from liquid to vapor. If the sensing bulb sends more refrigerant to the evaporator, all the refrigerant can't change from liquid to vapor. There are some others reasons also there for the liquid refrigerant in the evaporator like, Evaporator block and air filer block.
@MRBro-nq9vr8 ай бұрын
@@zebralearnings okey Thank you 😇
@manojsaxena8353 Жыл бұрын
For a 8.75 TR compressor with 11 TR condenser coil, can we install a 11 TR TXV?
@manojsaxena8353 Жыл бұрын
Danfoss model 067N2158
@zebralearnings8 ай бұрын
It is not recommended to install a TXV with a capacity exceeding the compressor capacity. In this case, the TXV capacity (11 TR) is larger than the compressor capacity (8.75 TR). This can lead to overfeeding of refrigerant to the evaporator, resulting in reduced system efficiency, potential compressor damage, and other issues. Therefore, it is advisable to select a TXV with a capacity that matches or is slightly less than the compressor capacity. In this case, a TXV with a capacity of 8.75 TR or slightly lower would be a more suitable choice.
@fiskiodelo60198 ай бұрын
Hi, how to regulate the txv when there's an heat exchanger with distributor?
@mikojanlio1642 Жыл бұрын
HI, is the sensing bulb needs to be in somehow upright position, considering that it is filled with refrigerant?
@zebralearnings Жыл бұрын
The sensible bulb should be in a horizontal position.
@mikojanlio1642 Жыл бұрын
@@zebralearnings and must be leveled lower than the valve?
@avi19284 ай бұрын
How is the thermal bulb stays full with refrigerant if the vapor comes out to press the valve does it never get empty the thermal bulb?
@beals66314 ай бұрын
The thermal bulb is sealed. It’s precharged from the factory
@shirazsyed3562 Жыл бұрын
I want to know about air balancing
@zebralearnings Жыл бұрын
Sure, I'll explain.
@loganathanj704511 ай бұрын
Refrigerant is cold air right?
@zebralearnings11 ай бұрын
Refrigerant can be air and liquid based on the pressure and temperature. We have explained about this in the video names Refrigeration cycle video. The link for that video is below. Please watch. kzbin.info/www/bejne/aqfTnq2qmbOMbNEsi=cOPm35EY7p_1JmRV
@hichamaittaleb65568 ай бұрын
THANK YOU WHAT ABOUTE EXV ??
@zebralearnings8 ай бұрын
Noted your topic request. I will upload the video soon.
@62Cristoforo6 ай бұрын
The refrigerant is expanded by compressing it?
@PrevailD3 ай бұрын
Think of it as the flow of the refrigerant being slowed down by forcing it through a small opening. Slowing the refrigerant reduces pressure which also reduces temperature
@medemdemworke52235 ай бұрын
Sure your presentation is very nice and technical so counntion is Good work on it ok
@issacjohn39807 ай бұрын
Sometimes the txv valve failure how to identify are symptoms
You are asking what will happen if there is no expansion valve?
@zebralearnings Жыл бұрын
If there is no expansion valve, the refrigerant can't flow from condenser to evaporator. So we can't get the proper cooling and the unit will not work without expansion valve.
@faisal-hw5cm9 ай бұрын
How to find Efficiency Approx And delta T of a cooling tower and chiller please make a video on it
@faisal-hw5cm9 ай бұрын
Waiting sir
@antonioduenas29529 ай бұрын
Hola lo manejan en español
@zebralearnings9 ай бұрын
Aún no he publicado ningún vídeo en español, ¡pero definitivamente estoy planeando hacerlo! Pronto comenzaré a trabajar en ellos.
@7starernhernh5806 ай бұрын
Plz difine elctronic xpension valvee
@ورشةابومحمد Жыл бұрын
Hi, can we install a small TXV for small old school home refregertor instead of capillary tube? Thanks.
@zebralearnings Жыл бұрын
Yes, you can try that. But the size and requirements should be same. So discuss with qualified HVAC technician.
@nuwannuwan36875 ай бұрын
Plc explan with yes 4
@cagataycicek29838 ай бұрын
what i don't really get is; you have a refrigerant at most 12 degree celsius out of evaporator, then you take it out to condenser to cool it with a compressor and try to cool it down with a 27 degree celsius cooling water which comes out of cooling towers, can you explain how refrigerant is cooled down to 7 degree celsius from 12 with 27 degree celsius cooling water.
@zebralearnings8 ай бұрын
Yes, you are correct that the refrigerant comes out of the evaporator at 12°C and next, the refrigerant will enter into the compressor. The compressor will compress the refrigerant very well. So the pressure and temperature of the refrigerant will reach too high (up to 50°C) and will enter into the condenser. In the condenser, we cool it with the condenser fan. Refrigerant will enter into the expansion valve, where it will further cool down before entering the evaporator.
@cagataycicek29838 ай бұрын
@@zebralearnings what would be the temperature of refrigerant out of the condenser. Is it like 27 degree celsius with High pressure and when the refrigerant is passing through expansion valve it keeps decreasing? Down to 7 degree
@zebralearnings8 ай бұрын
@@cagataycicek2983 When the pressure passing through the expansion valve the temperature of the refrigerant rapidly down to 6 or 7 °C.
@otomotiftrend7 ай бұрын
@@cagataycicek2983 it 's using pressure-temperature korrelation law. When you suddenly decrease air pressure, so temperature will decrease instantly. and the other hand. When you suddenly increase air pressure, then air temperature would increase instantly. And it's linear.
@nuwannuwan36875 ай бұрын
Plc explan with tes 4 explantion valve
@zebralearnings5 ай бұрын
Sure, I'll explain.
@LongfellowSebastiane-s2zАй бұрын
Herman Drive
@sunimalfernando43478 ай бұрын
❤❤❤🫶✊
@zebralearnings8 ай бұрын
❤️❤️❤️
@SanjeevGoyle6 ай бұрын
From compressor to expansion valve the refrigerant should be in liquid form or gas form?
@zebralearnings6 ай бұрын
When the refrigerant comes out of the compressor, it will be in vapor form. Then it will enter into the condenser. When it comes out of the condenser it will be in the liquid form. Then it will enter into the expansion valve. Before entering into the expansion valve the refrigerant should be in the liquid form.
@SanjeevGoyle6 ай бұрын
I think it should be high pressure liquid form
@zebralearnings6 ай бұрын
It is low pressure liquid when it come out of the expansion valve.
@Thought_House-c5c Жыл бұрын
Which expansion value is normally used in chiller
@zebralearnings Жыл бұрын
In York dual compressor centrifugal chiller, The butterfly type liquid expansion valve is used.
@medemdemworke52235 ай бұрын
If you are volunteering man please help me I am junior electrician and HVAC system sir plz Seend me your WhatsApp number sir tanx
@SanjeevGoyle6 ай бұрын
Instead of saying only refrigerant, you should say liquid refrigerant and gas refrigerant. How you people make the video?
@zebralearnings6 ай бұрын
Next time I will say like that. Thank you for your suggestion. And the videos are made with the help of software like Filmora, Fusion 360.