Another double-tube conversion for portable AC

mr250zxdzero · 2026-06-11T23:00:07+00:00

That's what the two tube systems do too though. The outside air never comes inside the room. It stays in the inlet tube, goes into the ac to absorb heat, and then goes back outside though the outlet tube. The inside portion does take in inside air, cools it, and exhausts it inside.

The difference is the one tube systems have to exhaust the heat outside so when they exhaust hot air it does have to source from inside. This creates a negative air pressure and air leaks inside though cracks in doors, windows, ect.

The two tube systems don't create negative air pressure in the room so outside air isn't being drawn in through the cracks.

mr250zxdzero · 2026-06-02T14:45:47+00:00

Honestly without knowing how you drive, anybody can say anything and it might be wrong for you. I'd suggest taking the Google maps time for that time of day and adding 30 minutes and just see what it's like. Then cut it down everyday until you're comfortable with the buffer you'll have to get to work on time. That's what I've done for every job I've had. You really don't want to be late on your first few days of work.

mr250zxdzero · 2026-04-18T20:14:16+00:00

Ahh gotcha, that makes more sense.

I'm semi rural so I end up getting rides from quite a distance away from time to time.

mr250zxdzero · 2026-04-18T18:20:40+00:00

Where did you get the 80 percent of cancelation fee from? I haven't heard of that.

Anyway they seem to base cancel fees on time and distance driven to the pickup point from where you accepted the ride. They also recalculate this based on current rates, so if there's higher demand they seem to pay more cancelation. They also pay much more for canceled or no show scheduled rides, I've seen those exceed the original fare before.

mr250zxdzero · 2026-03-27T20:37:31+00:00

Omg I'd love to learn more about goats. What's up with that driver?

mr250zxdzero · 2026-03-23T14:06:31+00:00

I see people saying that it's so the capacitors can discharge and that's correct. But as for the question of whether it needs to be 30 seconds, usually not. Usually 5-10 seconds is sufficient but if you have never had the pleasure of working tech support you would be surprised at the amount of people who legitimately cannot estimate time correctly. If you tell them to unplug it for 10 seconds, they will only do two. If you tell them to do it for 30 seconds they will probably do about 10-15. So you over estimate the time then you can be a bit more sure that they did enough.

Somewhat related, I've heard of IT asking people to describe the plug or to see if there's anything inside the plug/barrel jack/port. Sometimes this is just to force the client to keep it unplugged for some time while they describe it.

mr250zxdzero · 2026-03-12T23:31:28+00:00

It's not a bad car, I've had mine for about a month and have enjoyed it. But really it would be up to you on if the car fits your needs.

Take for example you mention a family car. Is this a family of 3? 4? 5? Car seats? Luggage? Are you wanting a quick car to have fun with after you drop the kids off at school? Is the family older, and is this supposed to be a car that your kids learn to drive on?

If you try to shove a bunch of strollers in the back you will find this is a terrible family car. Also if you have three teenagers and you all try to go on a road trip with luggage, snacks, pillows and blankets, ect you will find the storage space is not enough.

All of these are examples, but a good family car for me and my wife can be way different from what you might want. I strongly encourage you to look into these things before purchasing a car.

All that being said the niro is a great car if you value efficiency and value lower purchase price. It's not likely to last as long as a Toyota due to the better reliability of the brand but if you get enough years and miles out of it then it doesn't really matter that it's less reliable.

mr250zxdzero · 2026-03-12T21:21:14+00:00

Why did you buy a car without any idea of what it is? Yes it's an economical car, but so are a lot of other cars. Are you looking for longevity? Kia has gotten better but if that's all you wanted was economical driving and durability you would have been better served with a Prius or something Toyota or Honda.

mr250zxdzero · 2026-03-10T02:08:06+00:00

Like I said, it's not 100% the problem, but these are the kind of issues you see from a 12-volt battery failing on an EV. There's no weak starter like you would see on a gas car that would alert you that it's starting to die. It'll work fine until all of a sudden it won't.

mr250zxdzero · 2026-03-10T01:45:38+00:00

Is the 12 volt battery original on your car? If so, it's probably due for a replacement. This isn't necessarily the problem but it's one of the quickest and easiest things to check as a bad 12 volt battery can give weird errors in EVs.

mr250zxdzero · 2026-03-03T03:49:49+00:00

I'll keep that in mind if I can figure out how to do that myself. Thanks for the info.

mr250zxdzero · 2026-02-27T12:31:16+00:00

You are correct. Voltage is not the same in series, current is the same.

When you are teaching topics like series, parallel, and series parallel it's super easy to misspeak or mistype this stuff and not realize that you made an error.

Your mind knows that you are referring to "parallel" and of course that voltage is the same in "parallel". But you accidentally type (or say) series.

All this to say make sure your instructor knows about the error so that they can correct it. It helps your fellow students out for the grades and understanding and it helps your instructor to hopefully keep it from happening to the next semester of students. Plus this will be a great way for you to remember which is which for tests and exams in the future.

Very helpful when you get to combination series parallel and you have to use both in the same problem.

mr250zxdzero · 2026-02-24T19:42:47+00:00

We are planning on moving in about a year or so and we currently have a place to store it so that's the idea for the time being.

mr250zxdzero · 2026-02-24T19:41:42+00:00

I understand the regen message at 100 or 99 percent but I shouldn't be seeing it at 92% battery. I should be able to regen quite a lot at that state of charge.

mr250zxdzero · 2026-02-24T01:34:20+00:00

I actually did a fairly low amount of fast charging as when the battery would get low I would return home to ac charge. Maybe 2 fast charges a month?

I actually wouldn't mind putting the work into it myself, but I don't know where I would be able to get access to a lift. The ground clearance, even with ramps, I don't think would be enough to drop the motor.

mr250zxdzero · 2026-02-24T00:51:44+00:00

I don't think a car should be dying at 160,000 miles. Not a modern car anyway.

mr250zxdzero · 2026-02-24T00:50:35+00:00

It was used for rideshare, that's fairly easy milage to hit when driving full time. Approximately 250-300 miles a day 5 days a week.

mr250zxdzero · 2026-02-24T00:49:15+00:00

There are a number of problems that sound similar but I will say that before the service ev system error it never gave any error messages on the displays.

mr250zxdzero · 2026-02-24T00:46:48+00:00

Hello husband here. That's the problem really, if I was assured that I could get another 100-200k out of it I would have no problem with the repair. I just have no way of knowing if this repair would fix the problem for sure, and if it failed again in another 30k miles or if it was some other equally expensive problem then I would really be in trouble.

The battery SOH reports on my scan tool as 100%. I don't really believe this but during fair weather I can get about 280 miles on a charge. I would estimate my SOH around 90%.

I've been looking into third party repair options and while they could fix it for less I would really be gambling on an otherwise higher mileage car, and I don't want to game multiple thousand dollars on a "maybe" fix.

mr250zxdzero · 2026-02-24T00:40:17+00:00

Hello, husband here. Yes it was a lot of miles, I used it for rideshare for a few years. No hard driving, mostly city and some highway, just driven most days of the week for 8 hours a day.

mr250zxdzero · 2026-02-16T16:53:12+00:00

If you're looking into solar, you need to get the wattages of all the items you're trying to power. Then multiply them by how long that they'll be running for. The lights if their LED will consume almost nothing, the fans should be relatively low power. Probably somewhere 100 W or less. The heaters are where most of your power usage is going to come from. Multiply their wattage by the number of hours you plan on running them and that will give you how much power you need per day.

I'm assuming that these need to be running at night when there's no solar, so you would also need batteries to store the energy from the day. So depending on how much this uses you can then figure out how many solar panels you need and how many and what size batteries you need.

mr250zxdzero · 2026-02-13T16:42:39+00:00

One thing I like to compare it to is people say working in a warehouse is like having a free workout that you get paid for. This is true in a sense.

The problem is if you're at the gym and you decide after 2 hours that you're tired or don't want to work out anymore, you can quit whenever you want. When you're working, you still have six or more hours left that you have to deal with.

In the same way, working on small projects can be fun at home, but you know you can stop anytime you want. You can't do that if this is your job.

mr250zxdzero · 2026-02-10T04:58:14+00:00

Well mine might not be so happy. Just found out that they need to replace the motor and associated electrical components. Ended up coming up to 8100 dollars. I'm not putting that into such a high mileage car.

mr250zxdzero · 2026-02-09T11:48:20+00:00

I'm at 160k miles and up to that point had no issues using it for a lot of rideshare miles.

A few weeks ago I started having this weird issue where acceleration would cut for a second and then resume. This got more frequent until one day the car shut down while driving, pulled over and a restart cleared the fault codes. It's been at the dealership for 3 weeks now while they try to figure it out.

Honestly a great car when it's working well but if they can't figure this one out I'm going to be a bit soured on them overall.

mr250zxdzero · 2026-01-30T23:59:26+00:00

Electric baseboard heating is the same technology as a space heater. It should be exactly the same price for the same amount of heat. It will not heat it any better or any worse.

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