I'm a Retired Steamfitter, well versed in R 717. Been in the Refigeration Field since 1970. Love the videos. Looks like a lot of welded pipe, good fo the Stingers. Stay Safe! 🙏🇺🇸
I had a HillPhoenix booster rack in a supermarket that was transcritical. It was built in 2015 and they didn't use hot gas defrost. Love the new technology. CO2 is here to stay.
Honest ammonia guy to ammonia guy talk here. When you look at the amount of mid temp compressors here. Half if not 60% of them are just doing your condensing in the flash tank or what ever these guys call it. Literally just short circuiting the cycle. Do you think these thing are in anyway more efficient than a straight ammonia system? In my mind, the efficiency claims are complete bull crap. Far too much compressor, this isn't the way of the future, just my opinion. Not anything against LMP. I think all of these CO2 guys are bull crap. Low charge ammonia is the way, to hell with this leaky grocery store junk. Service mans nightmare.
This system only ever sees 2 compressors running on the medium temp and 2 on the low temp. I've just started up another co2 system and it's the same. co2 is super efficient. The only thing complicated is understanding the high side injector Valves and the flash gas valves. You are right about it being a service nightmare. Don't breath near your leak detector when trying to find the co2 leak. Lol. Co2 will never replace ammonia. This is still the refrigerant of choice for big builds. I would hate to see a co2 system with 20,000 lbs of co2. Imagine filling that system 50lbs at a time. Lmao. If I had the choice I would only install ammonia systems. It could be ammonia co2 small charge but ammonia still and will always be my choice of refrigerant. Thanks for the comment.
When you look at LMPs paper work on it, they would have you think differently. They list out a 2% spare compressor based on the TR provided by us. That doesn't sit well with me. I like a spare screw sitting waiting for a bearing or shaft seal to drop off. They're noisy hot little boxes, I just can't see customers maintaining these things. Good for us I guess, but with the tech shortage, no one wants a guy working on the same junk daily.@@alliancetechnh3368
I'm a Retired Steamfitter, well versed in R 717. Been in the Refigeration Field since 1970. Love the videos. Looks like a lot of welded pipe, good fo the Stingers. Stay Safe! 🙏🇺🇸
I would love to do some install/start ups on C02 racks like those. I don’t get to do very many, once in a great while.
Great video Dan. I have just been on a CO2 trainning course. Freon will be gone soon in the UK.
Looks like the world is going that way
I had a HillPhoenix booster rack in a supermarket that was transcritical. It was built in 2015 and they didn't use hot gas defrost. Love the new technology. CO2 is here to stay.
What are highest pressure case evaporators rated for?
@@Mr0ozo0 These were rated at 750psi. The relief valves for the case loop were set at 695psi.
We work with Carnot 80bar hot gas defrost systems, 100pct stainless
What type of sealant is used on CO2 threaded connections
We use the same stuff we use on ammonia.
Honest ammonia guy to ammonia guy talk here. When you look at the amount of mid temp compressors here. Half if not 60% of them are just doing your condensing in the flash tank or what ever these guys call it. Literally just short circuiting the cycle. Do you think these thing are in anyway more efficient than a straight ammonia system? In my mind, the efficiency claims are complete bull crap. Far too much compressor, this isn't the way of the future, just my opinion. Not anything against LMP. I think all of these CO2 guys are bull crap. Low charge ammonia is the way, to hell with this leaky grocery store junk. Service mans nightmare.
This system only ever sees 2 compressors running on the medium temp and 2 on the low temp. I've just started up another co2 system and it's the same. co2 is super efficient. The only thing complicated is understanding the high side injector Valves and the flash gas valves. You are right about it being a service nightmare. Don't breath near your leak detector when trying to find the co2 leak. Lol. Co2 will never replace ammonia. This is still the refrigerant of choice for big builds. I would hate to see a co2 system with 20,000 lbs of co2. Imagine filling that system 50lbs at a time. Lmao. If I had the choice I would only install ammonia systems. It could be ammonia co2 small charge but ammonia still and will always be my choice of refrigerant. Thanks for the comment.
When you look at LMPs paper work on it, they would have you think differently. They list out a 2% spare compressor based on the TR provided by us. That doesn't sit well with me. I like a spare screw sitting waiting for a bearing or shaft seal to drop off. They're noisy hot little boxes, I just can't see customers maintaining these things. Good for us I guess, but with the tech shortage, no one wants a guy working on the same junk daily.@@alliancetechnh3368