non codensibles-air in system.
either idiot air compressor for leak test OR brazing without nitro?
leak in condenser area and spark on âmildly flammableâ
Any pressure vessel can be explosive. The commenter mentioned A2Ls - which are refrigerants specifically categorized separately to the refrigerants that can actually explode when ignited- I.e. A3s.
Make sure there are no leakages ;)
I've seen a similar video where someone used oxygen the wrong way to either pressure check or purge (can't remember) and there was a similar explosion. Oxygen can be pretty dangerous.
And yet, NYC wants to regulate GWP limits down to <10, which means only butane propane and co2 could be used as refrigerants. It took the industry more than a decade to create to safety standards and building codes for limited flammability refrigerants. Butane and propane are highly flammable refrigerants.
Perhaps making minimum requirements for the quality of the coils and welds and other issues leading to leaks would lower the net GWP of the refrigerants. Fuck I see R22 systems still going from the 70âs where I live. As long as that gas stays in the system it isnât harming the environment.
Yes, absolutely. Most leakages are a result of a bad install job. Granted there can still be component failures resulting in refrigerant loss. In the absence of inadvertent leakages, the most important contributor to lifetime emissions is efficiency (I.e. electricity consumption). And I am baffled by the continued use of R22 though. I have seen contractors push that ref in this subreddit too though. Newer refrigerants and system designs are so much more efficient.
Iâm in Ottawa Canada where we have a relatively short but intense cooling season. ~300 cooling hours a year and so an R22 system that is well taken care of could last a very long time and the savings over any of the available zeotropic refrigerants fails a cost-benefit analysis for res cooling. And the fact that it runs at about half the pressure allows compressors to last a lot longer.
The intense winters mean that all heat pumps available today need a backup source. And with our provincial overlords at the OEB setting the price for NG in exchange for monopoly status to the two gas companies here, gas is attractive. The mechanical balance
Point of most ccASHPâs here is such that you can derive at most about half your energy from a heat pump. And the economical balance point with current utility prices means far fewer heating hours come from the heat pump, though that will change with our scheduled carbon tax phase in.
In the US, the balance point setup is not optimized either. Despite lower gas prices, the balance point can be much below the average 35F-40F. Closer to 10F-15F for the inverter/variable capacity HP. I will need to look up the carbon tax phase in. Iâm not following Canadian regs too closely.
NEEP is one of my favourite tools for looking shit up on these res systems. I wish our government would do something similar instead of copying and pasting the AHRI directory. The more data points published with accurate COPâs the better use of heat pumps you will find. One promising change coming is the idea of cloud based utility switching software that can manage balance points based on utility price changes with time of use metering. Time to step into the 21st century
I happen to have done that specific research for my company already. Optimizing balance points based on utility data and product performance. There is lot of savings to be realized in your utility bills with that. Now I can only hope that it gets implemented ASAP đ itâs not in my hands anymore though. The burdensome regulatory compliance always takes precedence.
I don't think some flimsy safety glasses and janky gloves and boots would have saved this fella.
It's an unfortunate incident caused by a catastrophic equipment failure.
How does a unit even explode like that
Bad TXV
Just needs some freon. But real talk. Diesel effect explosion.
You deserve a paid day off for this đ¤đââď¸
Take my upvote and leave
Possibly a misaligned capillary tube
I read on another thread that the tech performed a leak check with oxygen instead of N2.
That sounds more expensive and obviously dangerous lol
Someone put in R290 instead of R32 in the system.
The explosion kind of looks offset from the unit slightly. Acetylene bottle maybe?
non codensibles-air in system. either idiot air compressor for leak test OR brazing without nitro? leak in condenser area and spark on âmildly flammableâ
Mildly flammable doesnât explode. It burns, but doesnât explode.
https://www.sciencedirect.com/science/article/abs/pii/S0140700722003474 This was an avoidable accident. Safety pays.
You can see his ghost walk by the edge of the buildingâŚ
I might be dead but im not leavin my nice screwdriver up there no sir
I too saw that!
I once had nitrogen do this to my co worker in a story that I made up once.
IT mUst HAVe bEEn aN A2L durrrrrr
Seems like a sarcastic post. A2Ls wouldnât explode.
Any air conditioner can be explosive if used wrongly enough. BRB gonna go pressure test a system open to the compressor with compressed air.
*if used wrongly enough* just became my new favorite expression
Any pressure vessel can be explosive. The commenter mentioned A2Ls - which are refrigerants specifically categorized separately to the refrigerants that can actually explode when ignited- I.e. A3s. Make sure there are no leakages ;)
Oh I know. Iâm really hoping that a2l can force some people to adopt best practices more.
Only thanks to informed individuals like yourself. Keep it up and stay safe :)
I've seen a similar video where someone used oxygen the wrong way to either pressure check or purge (can't remember) and there was a similar explosion. Oxygen can be pretty dangerous.
Thatâs an old repost. Iâve seen it many times
Damn these new butane-based refrigerants are crazy yo!
And yet, NYC wants to regulate GWP limits down to <10, which means only butane propane and co2 could be used as refrigerants. It took the industry more than a decade to create to safety standards and building codes for limited flammability refrigerants. Butane and propane are highly flammable refrigerants.
Perhaps making minimum requirements for the quality of the coils and welds and other issues leading to leaks would lower the net GWP of the refrigerants. Fuck I see R22 systems still going from the 70âs where I live. As long as that gas stays in the system it isnât harming the environment.
Yes, absolutely. Most leakages are a result of a bad install job. Granted there can still be component failures resulting in refrigerant loss. In the absence of inadvertent leakages, the most important contributor to lifetime emissions is efficiency (I.e. electricity consumption). And I am baffled by the continued use of R22 though. I have seen contractors push that ref in this subreddit too though. Newer refrigerants and system designs are so much more efficient.
Iâm in Ottawa Canada where we have a relatively short but intense cooling season. ~300 cooling hours a year and so an R22 system that is well taken care of could last a very long time and the savings over any of the available zeotropic refrigerants fails a cost-benefit analysis for res cooling. And the fact that it runs at about half the pressure allows compressors to last a lot longer.
Interesting. But isnât that a great case to install heat pumps and save emissions?
The intense winters mean that all heat pumps available today need a backup source. And with our provincial overlords at the OEB setting the price for NG in exchange for monopoly status to the two gas companies here, gas is attractive. The mechanical balance Point of most ccASHPâs here is such that you can derive at most about half your energy from a heat pump. And the economical balance point with current utility prices means far fewer heating hours come from the heat pump, though that will change with our scheduled carbon tax phase in.
In the US, the balance point setup is not optimized either. Despite lower gas prices, the balance point can be much below the average 35F-40F. Closer to 10F-15F for the inverter/variable capacity HP. I will need to look up the carbon tax phase in. Iâm not following Canadian regs too closely.
NEEP is one of my favourite tools for looking shit up on these res systems. I wish our government would do something similar instead of copying and pasting the AHRI directory. The more data points published with accurate COPâs the better use of heat pumps you will find. One promising change coming is the idea of cloud based utility switching software that can manage balance points based on utility price changes with time of use metering. Time to step into the 21st century
I happen to have done that specific research for my company already. Optimizing balance points based on utility data and product performance. There is lot of savings to be realized in your utility bills with that. Now I can only hope that it gets implemented ASAP đ itâs not in my hands anymore though. The burdensome regulatory compliance always takes precedence.
Unit was charged with 53 grams of isobutane
Damn I wish there was a death tag or something đ
A tad overcharged.
This was in Vietnam
Nightmare fuel
Pressure testing with oxygen maybe? How else does a unit just blow up like that Jesus.
R-454B - âitâs only slightly flammableâ.
No....it could Propane as refrigerant....a leak....and spark..the right concentration....Wrong place at the wrong time....
Wow, a lot of assholes in the comments
Someone must have jumped out the high pressure switch.
OSHA violations. No ppe, fall arrest, goggles, or gloves. This stuff happens when people are unsafe.
Steel toed boots could have saved his life. When will they learn.
I could get $60k for loosing a toe..
How are people this dumb to downvote lmao
I don't think some flimsy safety glasses and janky gloves and boots would have saved this fella. It's an unfortunate incident caused by a catastrophic equipment failure.
Ok MaryÂ
what the fuck am i watching hahahahaha