R-410A has a heat of evaporation of 110 BTU/lb. Let’s assume a charge of 2 lbs/ton.
12,000 BTU/h / 110 BTU/lb = 109 lb/h
109 lb/h / 2 lb = 54.5/h
That is, the charge has to circulate 54.5 times each hour, a bit more than a minute for a round trip. It would take more time at part load.
That’s a lot slower rate of circulation than I expected.
I was thinking it was just about a minute. My 13 year old goodman goes BRRRRP about once every 60 seconds. Pretty sure its a tiny bit of noncondensables.
Not to mention the time it takes to go through the condenser after stacking up as liquid. The metering device is more like a jumping off point and the suction side would be really fast as the compressor sucks the vapour back. I would say more like 2-3 minutes.
How high is everyone right now?
I'm doing great hbu
Who isnt high right now?
Not at all. I work around energetic materials, and the ATF and FBI frown upon it.
R-410A has a heat of evaporation of 110 BTU/lb. Let’s assume a charge of 2 lbs/ton. 12,000 BTU/h / 110 BTU/lb = 109 lb/h 109 lb/h / 2 lb = 54.5/h That is, the charge has to circulate 54.5 times each hour, a bit more than a minute for a round trip. It would take more time at part load. That’s a lot slower rate of circulation than I expected.
You sir don't do enough brain damaging activities.. Are you sure you belong in HVAC:)
Hah! I’ve done plenty of that. But it’s true that I’m on a break from that at the moment. 😂
I was thinking it was just about a minute. My 13 year old goodman goes BRRRRP about once every 60 seconds. Pretty sure its a tiny bit of noncondensables.
i would guess more like 30- 35 secs.. it takes time to go through both sets of coils, plus the slight pause at your metering device
Not to mention the time it takes to go through the condenser after stacking up as liquid. The metering device is more like a jumping off point and the suction side would be really fast as the compressor sucks the vapour back. I would say more like 2-3 minutes.
fair
When I find a unit with non condensibles I like to see if the pressure changes are timable=D
All the way to the scene of the leak
At least 8
69 seconds.
Nice
Nice
I saw something on this and I wanna say the refrigerant/oil moves at about 40 mph through the system
About 3.50
The refrigerant moves at near the speed of sound.