That seems to defy everything I understand about p/t relationship. What system were you working on that had a 50-75 psi change in pressure, but no effect on liquid line temp?
+John McMaster r22 residential split. Let's use these numbers 250psi entering pressure and 90 degree temp that's roughly 26 subcool. After restriction it's 180 psi but still 90 degrees which is 4 subcool. As long as there is subcool no flashing but has major restriction.
I would be intersted to see this in real life. Mabye I could set something up with like a ball valve for a "restriction". I still believe even a solid column of liquid changes temp with differences in pressure. Even though there is no latent heat of state change. The same way dry suction gas gets hot when it is compressed. Not all that heat is from friction within the compressor. Just simply compressing it increases both temp and pressure without changing state.
Very Interesting! I'm not fully convinced the filter dryer was the culprit by the Flir's video but I do trust your experience and deductive reasoning. The Flir seemed to be picking up the condenser coil temperature in the background. Filter drier plumbing seemed to be blue all the way across to me though with some difference in shades of blue. Very neat tool!!! I'd like to experiment a little with one of those for sure! What is normal temperature and or pressure difference across the drier? (or at what difference is replacement or other treatment needed)? Moving on U.P. !!!!! Very cool!!! I enjoy your vids and posts Mander!!! They are some of me favorites!!
Thanks I appreciate it. The temperature crosshairs was pointed at the coil. I had my phone laying on the compressor when I turned it on. I need spotter lol. . The refrigerant in the coil is much hotter. as it comes out to the liquid line it has cooled to a little bit over the ambient temp that's why the color is light blue. As the temperature gets colder the color will be dark blue. You should have no more than 3 degrees temp drop across the filter dryer. I can change the colors on the camera to only pick up hot or cold. I think it might have been better.
I would have replaced the dryer with a straight pipe and installed it outside the unit, preferably close to the evaporator inlet. This location is dumb, in my opinion.
Paul Hickey yeah. It's not easy to get to but that's the only place it can go. If you look at it the liquid line is only 2 feet. From the bottom of the condenser coil it's goes up then takes a left into the evaporator. Packaged unit.
you are correct sir, the proper location is as close to the metering device as possible. There main purpose for the dryer, is to protect the metering device. This is better done on the other end where other contaminants from the liquid line can be filtered as well. But to say its dumb is really out there. How about convenient???? Some OEMs want "NOTHING" in their system to restrict flow including dryers.
That's a slick gadget, could def come in handy on some of those head-scratcher calls.
mike_HVAC definitely worth it.
That's so cool. I would watch a system run for hours like that! The hard to diagnose driers are the ones that have 50-75 psi drop but not temp change!
That seems to defy everything I understand about p/t relationship. What system were you working on that had a 50-75 psi change in pressure, but no effect on liquid line temp?
+John McMaster r22 residential split. Let's use these numbers 250psi entering pressure and 90 degree temp that's roughly 26 subcool. After restriction it's 180 psi but still 90 degrees which is 4 subcool. As long as there is subcool no flashing but has major restriction.
I would be intersted to see this in real life. Mabye I could set something up with like a ball valve for a "restriction". I still believe even a solid column of liquid changes temp with differences in pressure. Even though there is no latent heat of state change. The same way dry suction gas gets hot when it is compressed. Not all that heat is from friction within the compressor. Just simply compressing it increases both temp and pressure without changing state.
+John McMaster as long as the subcool is eaten up there will be almost no temp drop its not common and it usually goes unnoticed
Thank you for these videos Ulises.
The More I watch the flir the more I like it.
It's pretty useful.
Ulises Palacios are you using an iPhone?
Nor-Cal Refrigeration & H.V.A.C yes I am. I have an adapter so I don't have to remove my case.
Ulises Palacios Hvac vids are the best on UA-cam.. Thanks!
HVAC/R DUDES ARE
Crazy how the condenser coils nearly instantly heated up
slicky_fox pretty crazy right.
That was an excellent video! Thanks for posting!
Diego Urena thanks
I think I need one of these
Very nice. But ... can it see ghosts in the night ?? 😅😅
Buy a Flir so you could acid trip for free
This video still rocks
Very. Awesome
223tackdriver yup. Thanks 👍🏼
Cool technology!
Yeah buddy.
Hi, could you tell if there’s a possibility to find freon leaks with this camera? Thanks.
Yes definitely
Do it detect a freon leak?
Very Interesting! I'm not fully convinced the filter dryer was the culprit by the Flir's video but I do trust your experience and deductive reasoning. The Flir seemed to be picking up the condenser coil temperature in the background. Filter drier plumbing seemed to be blue all the way across to me though with some difference in shades of blue. Very neat tool!!! I'd like to experiment a little with one of those for sure! What is normal temperature and or pressure difference across the drier? (or at what difference is replacement or other treatment needed)?
Moving on U.P. !!!!! Very cool!!! I enjoy your vids and posts Mander!!! They are some of me favorites!!
Thanks I appreciate it. The temperature crosshairs was pointed at the coil. I had my phone laying on the compressor when I turned it on. I need spotter lol. . The refrigerant in the coil is much hotter. as it comes out to the liquid line it has cooled to a little bit over the ambient temp that's why the color is light blue. As the temperature gets colder the color will be dark blue. You should have no more than 3 degrees temp drop across the filter dryer. I can change the colors on the camera to only pick up hot or cold. I think it might have been better.
@@UlisesPalacios I use a 6$ ktype with tape..same shit
Tony Dibiaso I just use my hands 🖐
@@UlisesPalacios I use my taint..super rare.
Tony Dibiaso impressive 😂
I would have replaced the dryer with a straight pipe and installed it outside the unit, preferably close to the evaporator inlet. This location is dumb, in my opinion.
Paul Hickey yeah. It's not easy to get to but that's the only place it can go. If you look at it the liquid line is only 2 feet. From the bottom of the condenser coil it's goes up then takes a left into the evaporator. Packaged unit.
you are correct sir, the proper location is as close to the metering device as possible. There main purpose for the dryer, is to protect the metering device. This is better done on the other end where other contaminants from the liquid line can be filtered as well. But to say its dumb is really out there. How about convenient????
Some OEMs want "NOTHING" in their system to restrict flow including dryers.
Flir sucks. Won't work on my phone.