make a cheap "swamp cooler" take a 20" box fan, or anything that blows air other than your mother-in-law. get a towel and dunk it in water, then drape it on the fan. obviously dont get water in the motor.
@oldmud0 they do work good, i use a dorm sized fridge and extract the coils and compressor without damaging the pipes, and then put the hot side out-side and the cold side in-side and it could do a small room, running more non stop.
it was actually a bigger problem figuring out how to toss the parts i didnt need. being california and all, they charge for fridge disposal, even if the part they charge for (the freon) isnt IN the leftover shell pieces.
@oldmud0 if you have a freon exchange system you could cut and paste and evac and re-fill. grab a small oil cooler (or tranney cooler) from the auto store
Build it with ammonia (as the refrigerant) instead at first, get all the parts at a junkyard. just watch out for the EPA
@oldmud0 side note, the smaller lower wattage peltiers used apart from eachother (seperated) seem to be much more efficient. but i have only sperimented with that stuff about 5 times. my little 5Volt ~30watt one slammed with a bit higher voltage has a way better delta, and no meltdowns.
peltier 1/2 the heat is pushed to the other side using semiconductors, another 1/2 the heat still pours into the hot side, due to bad efficency. the semiconductors are soldered in. they will begin to fail and the whole thing comes apart, if your not extracting (heat sink) off the hot side at least.
Because hot side and cold side are less than 1/4" away from eachother, the key is to extract both heat and cool and get it "moved" as quickly as possible. Thusly why a smaller set of thermopiles seperated more also helps
You could say that every time this technology is applied, and what is sold cheap, has been done very poorly. little thought of how to get it most efficient. little smarts on using the right spread and extract heat and cool.
It will always be <50% efficient, but most of the designs look to be more like 30% efficient.
i dont know how to make one, and i doubt that would be any more efficient than making my own battery at this point in time. Now after the zombie apocalypse maybe :-)
So, if I get some neodymium magnets, screw with the windings of a ceiling fan I have somewhere in my garage, add some nice blades, and wire up the fan with the peltiers, how much condensation would I be expecting in a hot day, 10 mph winds
I already said decreasing the number of units per area would assist in getting the heat and cold Off. or you could use water and a water pump to get thermal moving faster. but water in a solid state system seems like it would be back to a maintance problem.
interesting, because the common way ends up being freeze the water on the cold, then cycle the unit dropping the water. But we do know at just the right temps , instead of overdoing it or under doing it, water would keep rolling off. need a good alogrythm for that.
Plus just the right "surfaces" whatever that would mean, which could be researched. increased surface area, or molecular structures that insure way more condensation. like dust does for condensing ware to make rain and hail.
So, we have to determine a formula to figure out the right amount of current to feed the peltier based on its theoretical efficiency and the current dew point.
@oldmud0 you have to have money before they would care. Go into an auto dealership, after They spent $3000 in ads that week, and look a bit homeless they wont give you the time of day, probably tell you to git off the lot. Show them the cash you wanted to by a car with, and they will be bringing you food on gold platters :-)
no respect i tell ya, i wasnt homeless (yet) i was working, for the cash, but suits dont understand real work :-)
@Psycogeek My dad bought a new car about a month ago, and so he used this service to match the price of the car he wanted before he closed the deal. Within 60 seconds of him signing up for the service, he was getting calls and emails from a crapton of auto dealers in the city.
I've always had odd issues with adb backups, but it's completely possible I'm not doing it right
It'd always end up restoring the phone like 80% of how it was previous configured, and each time missing random bits, maybe the wrong background image, or ringtones are set, stuff like that
I stopped doing it awhile ago anyway as Iended up finding my phone was easy enough to just restore on the fly anyway
I expected the adb to provide almost a 'static' image of the phone - it doesn't do this
Everybody is over-complicating it with RFCs, IP classes, and such. Simply run a few tests to see how the ping command parses the IP input by the user (extraneous chaff removed):
> ping 1
Pinging 0.0.0.1 with 32 bytes of data:
> ping 1.2
Pinging 1.0.0.2 with 32 bytes of data:
> ping 1.2.3
Pingi...
@djsmiley2k I admit I was slightly iffy about specifically adding "dot notation" and "standard address", but it did honestly seem that was what they were after
This is weird: a friend of mine admits that she has a crush on me, but refuses to date me, or anyone for that matter... Apparently she's had bad experiences in the past...
I often have issue bringing up laptop from standby and it's in SSD. Did as Intel told me and installed latest firmware from USB boot and this did not help. I think it has to do with migration that I did to that SSD. On old SSD I also did migration and same issue occured until I disbled DPIM (has to do with SSD power management) in Intel SSD Toolbox. I don't know if this disabled option carried over to new SSD but the issue is there.
@Rahul2001 The whole rep thing for SO Documentation is being continually tweaked as users were getting massive rep and being capped ... we probably won't know how rep will work until it comes out of beta.
@djsmiley2k That question hit HNQ. I guess people like the analogy in the answer. It doesn't really answer the question though, but I don't think it will be deleted ...
@djsmiley2k That question hit HNQ. I guess people like the analogy in the answer. It doesn't really answer the question though, but I don't think it will be deleted ...
I have a defective phone battery, one that is bulging quite severely, it's about 50% thicker in the middle than at the edge.
While the battery actually still works, I've replaced it as the old one didn't fit inside the phone any longer, and the screen was about to come off.
However I can't safe...
Your best solution is to put the battery in some fireproof container to contain it. A battery like this is a potential fire hazard and should be isolated to prevent property damage in the event it does catch fire. — bwDraco10 secs ago
you have the right to remain silent, and before we search you , do you have any knives guns drugs needles razor blades or nuclear devices? No but i do have a lithium battery and I intend to use it.
you know i have reintegrated gasses in a li-poly battery before. there is a trick and an alogrythm that will do it. Only thing is it doent make the battery alive again, just a zombie battery.
@bwDraco Not sure about "internally pressurised with oxygen"..? I think last time I looked it up it was very volatile organic compounds that oxidise (burn) violently when exposed to oxygen/air. If it were oxygen inside then that would react with the contents without puncturing...
> Alkyl carbonates, particularly the linear carbonates necessary to keep battery electrolytes liquid at room temperature, are flammable and can vaporize at temperatures that are attainable during battery operation. [4,7] This can allow pressure to build up in an overheating cell and, in the event of a physical failure of the battery, lead to the aforementioned fire or explosion. [1,7,8] These hazards have caused safety problems for Li-ion batteries in some consumer electronics and have complicated the deployment of Li-ion batteries for some electric and hybrid cars. [7,8]
My home LAN is a rather standard 192.168.2.0/24 network with gateway on 192.168.2.1 and has DHCP on addresses from 100+ configured on an ASUS router (RT-AC66U). The WAN is configured via DHCP from ISP.
My goal is to access a machine at 172.16.5.31 on a 172.16.5.0/24 network, from any machine on ...
> Puffing occurs when the battery has suffered metallic lithium plating due to abuse or failure, causing the oxygen to not recombine as intended in the cell chemistry. The metallic lithium reacts with the oxygen to form lithium oxide, but lithium oxide has less oxygen than the normal lithium ion chemistry, causing free oxygen to accumulate inside the battery. This extra oxygen is what causes the battery to expand.
ya figure all that smoke and flame showing on the outside of the battery are mostly solventy fuel used as the electrolyte, as the lithium itself would oxidise repidly (burn) on the inside. so you have the rocket fuel the small ammount of lithium and the carbon, and the gas fuels billowing. when contained in stupid things like ammo cans, the sort of "wood gas" created in the container , plus the oxygen is what blows the container to pieces.
@bwDraco and that is why you do not recommend (hint) to put them in containers, you recommend to put them in "open" containers or leave them (like you said) isolated on the ground.
open containers go whoosh with a build up of gasses, closed ones go boom.
I removed the phone reference as phones are technically off topic for Super User. This condition can affect any pouch LiPo or prismatic Li-ion battery; most thin-and-light laptops use pouch LiPo batteries and can be affected by the same issue, so this question can certainly extend to computer hardware. — bwDraco46 secs ago
I have a defective phone battery, one that is bulging quite severely, it's about 50% thicker in the middle than at the edge.
While the battery actually still works, I've replaced it as the old one didn't fit inside the phone any longer, and the screen was about to come off.
However I can't safe...
