I saw 5 for air-air and was impressed. Then I see SCOP? Oh please. Why not change the scale again to make sure nobody knows what a good value is. Just like SEER on an air conditioner.
SCOP varies depending on environmental conditions!
Real COP or go home IMO. Watts out/watts in, no fudging numbers to confuse consumers again.
I designed my heating system around a fairly efficient non-condensing NG boiler that takes 40W for the fan. I can run it and the circulators off my battery bank no problem, and handle a sustained power failure. But only because of the natural gas.
I’ve been integrating a water-water GSHP into it to provide summer cooling and a supplemental heat source from my solar panels. It works well, but in my climate (Rural Canada) I would be insane to completely remove my gas boiler IMO. Heating demand is just way too high on the sort of days where the power goes out. I’ve been working on plans for a wood boiler but insurance has put their foot right down on anything that burns wood in the last couple years.
Here in Canada we can’t get lithium at a reasonable price so I have 10kWh of lead-acid (which as you know is actually 5). Doesn’t go very far on a cold winter day with 4 hours of sun and snow on the panels!
On the upside I haven’t had to hook my generator to my house in years, I’m really happy with my “grid-independent” system.
Double would be a COP of over 10. That’s a stretch for an overbuilt GSHP and not even slightly feasible for air-air.
High COPs are usually easy on a compressor as they represent low compression ratios and low differential temps. For example I can hit around COP 7 in cooling on my scrap heap GSHP, with an evap temp around 10C and condenser temp around 20C. That’s a high side pressure around 100 psi and only 30 psi of differential, “barely working” as far as the compressor is concerned.
The only way I know to get high COPs is to have an oversized condenser and a way to get your refrigerant below ambient, like evaporative, ground source or overnight radiant so you can get the compression ratio down, unless you know a secret in which case I’m not afraid to burn out a compressor or two trying it out!
Great to hear this story of success. That plus
$266.99 per probe for the original proprietary one
Reminds me of Schneider’s stupid proprietary dongle for programming their PLCs. It’s just a CH341 in a funny shaped case that fits into the funny shaped slot on the PLC, where it plugs onto an ordinary 0.1" pin header to talk logic level serial.
Plus it has a custom USB ID of course. Probably costs $2 to manufacture, sells for almost $300 as well.
what’s the purpose of holding the most important job in the world, if you constantly have to worry about going to prison? Ridiculous.
Big yikes there. The purpose is to serve the American people.
The President is not the King of America, and its easy to not have to worry about going to prison - just don’t commit crimes. Before Trump, the question wasn’t even relevant.
Interesting to see the charts there showing a steady 25% against. Even when asked if a majority government should have the support of a majority of voters!
Who are these guys! Its hard to believe that a quarter of people surveyed appear to not want our democracy to function.
Used to do this to my shooting glasses, just put Scotch tape on my non-dominant eye so I could leave it open while shooting open sights.
I’m “wrong eyed” so my brain always tried to look down my gun with my left eye. The tape solved it. With practice I can now shoot well with regular glasses, though it’s still more comfortable to use taped glasses.
Don’t listen to the wrong prescription talk as it will hurt your eyes. Tape is cheap and safe.
No I’m serious, I’m here in SK and we’re trying to push Moe and his cronies out for the NDP this fall, and our biggest problem is the federal NDP damaging the brand by backing Trudeau. All we say all day is “The SK NDP is not affiliated with the federal party, we stand for working Canadians, vote Moe out”
If you think $500 for low income and seniors is anything other than a bone thrown to pacify the poor then Singh has pulled the wool over your eyes.
The requirement for “no access to insurance” absolutely torpedoes the entire thing. Private insurers need to fall, universal coverage is the only way. Dental is the Canadian equivalent to the entire USA health insurance racket.
Congrats on living in the one green riding, which does give you some power over your single seat party… Which ultimately holds no power at all in our broken system.
I’m sorry to say I voted Trudeau on the promise of electoral reform, which he then told us we didn’t want. I’m in a safe blue riding which means my vote is pointless, so I’m going full protest vote next time for the PPC 🤣 Max is laughable, especially his obsession with dairy supply management, but enough votes for “burn it down” will hopefully send a message.
Trudeau over Biden?
Trudeau is importing the world’s problems in the name of propping up the real estate investor class (of which he is a member) and pumping up fake GDP numbers. GDP per capita is plummeting in Canada with excess immigration.
Singh is in his pocket, a waste of a vote. I was an NDP voter all my life, I’m done.
Polliviere is an absolute idiot who will ride a wave of hatred for Trudeau into office.
Voters in Canada have no power and no representation as all votes are whipped. Your MP is a seat filler. We have no ballot initiatives or direct democracy options that America has, and reform will never come.
Biden listens to people who know what they’re doing and stands out of the way… Passed legislation supporting workers and unions, energy infrastructure etc. meaning he’s both more left than Singh and more business-friendly than PP
America needs some perspective. You complain that your only choices are a doddering fool or a toxic narcissist who wants to actively destroy the nation.
Here in Canada we look at our options and think “America is so much better, I wish we had an option to vote for a doddering fool. All we have are narcissists”
No joke I wish we had a leader as good as Biden. The bar is so low that the devil is doing the limbo with it down in Hell.
Coal plants can be fairly easily repowered to natural gas, which decreases CO2 emissions but more significantly drops local particulate emissions nearly to zero. China’s air quality is famously poor so this would be a smart move.
China still needs baseload generation and converting coal to NG is far cheaper than nuclear or advanced stack scrubbers.
It’s meant for a zero-indexed stick so you may need to recalibrate or remap your throttle. Are you using a radio and having issues with reverse below half throttle?
Liftoff is fun, I’ve always recommended FPVFreerider for serious training, it’s more stripped down and focuses on absolute core flight functionality. Less tuning, more flying.
The graphics are basic but that means you’ll never drop a frame even on a potato at 165Hz, the flight controls are insanely tight. Likewise this was the software I paired my radio with and learned to fly.
It’s also only a couple bucks and there’s a freeware/demo version floating around out there too.
Except male bees have no stingers, and almost all bees are female… So I guess that would leave us fellas as being the birds?
Birds are cool I guess
But then someone else will end up with these bunk cables. They really should have demanded mandatory identification on the cable ends.
AROOOOO! ACHOOOO!
COLDS FOR EVERYONE, MFER!
Oh I think I know what you’re talking about, abusing a minisplit by idling the inverter back too far. Effectively you have a hugely oversized condenser for the tiny flow, under the right conditions like a cool night you can get ridiculous subcooling.
But COP is irrelevant in this case because you’ve derated the actual BTU to near zero, you aren’t moving any refrigerant.
Also yes this will kill your compressor because the minimum speed is set where it will get enough oil flow. Run it too slow, and it won’t pick up oil and eventually seize up. You also could end up running the suction in vacuum which is also hard on compressors.