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Word on the street is that the Japanese government is massively under-reporting cases in a last ditch attempt to save the Olympics. Their numbers are off by at least an order of magnitude.
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Why are people stocking up on food anyway? this is not that kind of event. A solar storm or EMP that knocks out all electronics would be that kind of event.
It's not like the government would leave you to starve to death if you are quarantined, either the military would organize handing out of food or they would organize some kind of mobile groceries van or something like that.
It would make sense to have food for a couple of days before everything gets organized, but that's all.
I mean if we can get food and water to people and areas that are totally snowed in in the winter, I think we can handle this.
What are you, some sort of socialist? |
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Yes holy water being drained in churches too
WHERE IS YOUR GOD NOW?
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LFC have you had any shipments?
Someone I know got a partial shipments of uniforms they had ordered out of China. Still half the shipment missing.
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The best tracker setup I everActually...I take that back, I saw one better; this was a small pole mounted array a grower I knew was using to irrigate weed in NorCal. It was a counterweight system. the default angle was dawn. Sun came up started pumping water to the crop, small amount of that was diverted to a bucket up on the pole. As the bucket filled up it would tilt the array around to the West. Sun goes down, pump quits, there is a small hole in the bucket, it leaks out over night and the array tilts back to dawn.
fucker had a plant at the base of the pole to use the leakage...fucking beautiful.
That’s extraordinary. Only question is parasitic load of the pump versus gainz from tracking. |
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solar trackers.
I don't want to come off as snarky, I know I can be an ass sometimes... System complexity, in my experience there are exactly two kinds of trackers; those being installed, and broken ones... I have heard rumors of there being a brief intermediate state of "working tracker", but I have never encountered it in the wild. no, not snarky at all. there is a manual override mode. manually set it to table mode or wjatever angle you want and lock it. so fail safe = manual grunt. or just leave at optimum angle. so when it does work its more efficient. What’s the trade off between buying a tracker v buying two fixed panels and pointing them in different directions. I can see the tracker being useful if you have limited roof space, or you are a Mars rover |
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You are correct, it’s undersize. But in economic terms, the grid is a much cheaper and bigger battery for normal everyday household consumption given current feed in tariffs.
The battery is more about energy security. Keep in mind most solar will be cut off when the grid goes down. People won’t be able to generate at all because the utility shuts down their solar remotely to stop them exporting. The Tesla has a gateway to allow you to generate behind the battery.
Is that legal somehow? How does it work? Does it inject to a completely different line in your house or is able to somehow isolate from the grid so that no electricity is injected back? Have you considered installing one of those cheap small aircon split unit (one with 1kw max) in at least one room, ie the bedroom, so in case of a blackout you have some air conditioning at least? Obviously your 7kw central unit is a no-go without the grid and that is probably the only thing missing in your nice setup. The gateway sits between the battery/solar and the meter. So the meter never sees electricity which is produced by the panels and stored by the battery or consumed by the house. In a power cut the gateway closes, and production can continue behind the gateway. It’s signed off by the installer and inspected by the utility so completely legal (although US may be different). I don’t understand air conditioner ratings. Our main system is rated 1800 watt but pulls 6kw. Wtf? Can someone with more electrical knowledge than me explain how this works? We have a few smaller splits but they aren’t that small. They will still pull 2 - 3kw each. |
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Uh we paid US$259 per panel for Hanwha Qcells @ 340 watt each. Need to double the cost to account for microinverters, installation and electrical work.
So that’s about $520 for 340 watt which is $1.52 / watt for a large install (scale pricing). You can then take off any government incentive schemes which would reduce the price.
The 340 watt panels seem to peak out around 1.2 kw/h per day.
Edit: 1.2kwh is wrong. They peak at 1.85kw/h per day.
Back of the envelope calculation, one panel produces on average about $0.25 worth of electricity per day at 25 cents / kw/h tariff. 0.25 x 365 = $91.25 per annum so a touch more than 5 years to pay off.
Our ROI was much faster because we had government subsidies which brought the cost down by a third.
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Hell yeah that sounds delicious |
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You are correct, it’s undersize. But in economic terms, the grid is a much cheaper and bigger battery for normal everyday household consumption given current feed in tariffs.
The battery is more about energy security. Keep in mind most solar will be cut off when the grid goes down. People won’t be able to generate at all because the utility shuts down their solar remotely to stop them exporting. The Tesla has a gateway to allow you to generate behind the battery.
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Not sure where you live but we can get by on 14.5kw/h per day including two fridges, security systems etc.
We run a 10kw system and it would be a rare day we get less than 15 kWh out of it, seeing as that is 1.5 hours at full load. 30 - 40 kw is more typical, peaking out around 60kw.
That is *very* good data to have, thank you. So on an average day you get about 4 solar hours of light, with a peak of 6 solar hours of light. That matches my observed values here with a much smaller system (~1kw) on a grid-tie/battery reserve. I've noticed the fridges are the big power pullers (aside from AC, which in a disaster I am not running) not because they pull a lot of juice but because they pretty much always pull it. I should put a Kill-a-watt on the fridge again and see just how much power it pulls in a day, in fact I think I'll do that after measuring the idle current of Antminers (for another thread). How big is your battery array? Mine currently is 200ah*24v or 4.8kw total. My solar array is about 1.2kw total (single crystal panels so pretty efficient) and my inverter right now is a 700 watt UPS converted to run on external batteries with a Matrix/5000 that can be used if I needed a really high drain load. If I'm running my house in emergency mode it's about 4kw a day of power used. Which is on the edge for my system: Given I can only generate about 4kw of power a day with the panels I can run for a day with no solar power and even then it would be difficult for me to "catch up" and charge the batteries to 100% with solar alone. My secret weapon for that is the car: A 1kw 12v battery inverter attached to a car can charge the batteries to full in a couple of hours. Having a hybrid in this case is *really* cool, as you can charge off the hybrid battery and the engine only has to fire up to charge the hybrid pack (which it can do quickly and more efficiently than running 100% just to spin the alternator). A bonus is you have a 10-20 gallon rolling fuel tank that you can also drive (at 40mpg) somewhere to tank up on fuel if needed. So as long as civilization doesn't completely puke I'm ok. Really. Interesting. Stuff. Yes in an emergency we would loose the beer fridge, which should significantly reduce our load. As you point out, aircon is the real killer. Our system draws at least 6kw so would be a definite no. A key is not to fully optimize your panels, don’t point them all due South because that will give you a weak feed on the shoulder periods and a big spike in the middle of the day when you just have to dump it on the grid. Instead you want 1/3 pointing south east and 1/3 pointing south west and 1/3 south. This allows you to pick up the early morning sun and the late afternoon sun which is much more valuable than the midday sun. Battery is a Tesla Powerwall 2 with 13.5 kWh with 5% capacity reserved for intermittent grid trips - it comes on in less than a second. Sometimes you actually get more than 13.5 out of it in a day if there is a storm and you draw down and then recharge in the afternoon Other days it doesn’t get a full charge if it is cloudy and we are running the aircon non-stop - household consumption can peak around 70kw/h per day which exceeds panel capacity even in full sun if we abuse aircon, run the stove, dishwasher, clothes dryer. Panels cost very little these days, they seem to be halving in price every five years. If you put your system in awhile ago, you might try and see if you can economically add more panels. Of course you will need a converter but if your string inverter doesn’t have enough capacity you could consider adding microinverters which allow you to add panels piecemeal. You are right about the car but I am more worried about fuel security than power security. We still don’t have an electric car yet and we can’t produce our own fuel. I possibly should go get some fuel canisters but don’t like the idea of storing them in the garage. Edit: just checked the numbers. Our minimum production in a month was 792kwh and max was 1560kwh. So production doubles in summer. |
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the lithiums have made impressive strides in energy density, outpacing your Trojans by a fair bit
that said, and I am quite aware of the dangers inherent in H2SO4, if I had one of those power walls it would be installed in an airtight bunker some distance from the dwelling...
when lithium decides to do the bad, it is really bad
True. For a house system weight and energy density aren't as big a problem as in a car (where you have to like move it). So L16 or T105 batteries can get you a lot of power for a reasonable price without the major fire problem of lithiums. As for hydrogen I've never seen issues with lead, however I guy I knew did blow the bed off his battery powered truck with flooded NiCD batteries. Those last forever but really can gas hydrogen on charge. Oh well. 100ah AGM batteries are quite nice as well but a bit more pricey per AH. Any way you go, you need to figure out how much power you need per day, then build your solar panels to put that much power back in 1/2 day (factoring in cloudy days) with a battery capacity of at least 3-4 times your load for rainy days and the like. Thus if you want to run the fridge (200 watts*24=4.8kw) some lights (about 1kw a day) and a toaster (1,500 watts for an hour a day) you're at 7kw. Thus a 28kw battery pack and 14kw of solar will do it. Assuming 5 hours of sun per day (and you factored in the 2x oversize for solar) and you're talking a ~2kw array and if the batteries are 48v then a 500ah battery pack or 16 T105's. Takes more power than you think. Not sure where you live but we can get by on 14.5kw/h per day including two fridges, security systems etc. We run a 10kw system and it would be a rare day we get less than 15 kWh out of it, seeing as that is 1.5 hours at full load. 30 - 40 kw is more typical, peaking out around 60kw. |
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Trump has just said that coronavirus is a new hoax by the Democrats so y’all can settle down now
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I am very surprised that we keep trickling down 2-3% in the stock market almost ever day. Very strange.
I would have assumed that markets can price in everything quicker.
That’s not necessarily how it works. This is the SPX500 monthly candles. A rolling crash can easily take a year or more. It took 17 months to bottom during the GFC which would be June 2021 if we roll from here. Then years to slowly grind back up.  |
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Like the sun's ever going to put in a appearance smh no
Tomorrow looks ok  |
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You ghoulish kids are cute and all but the sars2 only kills 10% of the over 80's and 10% of diabetics etc so it's not that part that's going to sting as much as 2% of all humanity - if you remember what that is - could be killed. One hundred and fifty million souls. If you know 150 people pretty well, 3 will die in the next 18 months of this thing. Of your 1500 acquaintances, 30. 3 Hat-wearing, god-fearing, wall-observing bros might die.
edit ~15%, ~8%, ~2.3% but there's only been the one big study so far
It’s not even that - it’s 20% requiring ICU support. Odds are that if all of your family catches it, at least one of them will require ICU support. And the death rate rises when the hospitals are overwhelmed. |
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Also remember redundancy can be expensive: When the power goes out you don't need to have a generator big enough to run your house for a month. What you need is enough power for the fridge, a lamp (really nice when it gets dark), the fans for your wood stove (in winter), cell phone charging (surprisingly little), a weber grill, and a coffee machine (because waiting in line for coffee sucks). I've done this for a week, it's really not that big of a deal and having cold beer, a light at night, and coffee in the morning goes a long way towards feeling civilized and appropriately smug at those without.
So.... Keep things in perspective. Try not to be part of the mass migration herd, either be the first one out (tricky to time) or wait a week till things settle down.
Or solar + a Tesla battery and pretty much run your household as normal |
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