Author Topic: Condensation and misting  (Read 1187 times)

Offline John m

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Condensation and misting
« on: August 09, 2024, 09:51:13 am »
Driving an EV I notice the windscreen mists up even on a dry day as there is no heat generated by the engine ,Is there anything you can rub or spray on the inside of the windscreen to keep it crystal clear ?
"Ahfuck

Offline John m

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Re: Condensation and misting
« Reply #1 on: August 09, 2024, 09:55:10 am »
AI says ...Yes, there are several products and methods you can use to prevent your windscreen from misting up:

Anti-Fog Sprays
There are specific anti-fog sprays designed for car windows. These sprays create a thin, transparent layer that prevents moisture from condensing on the glass. You can find these products in automotive stores or online. Follow the manufacturer's instructions for the best results.

Homemade Solutions
You can also make a DIY anti-fog solution. Here are a couple of common recipes:

Vinegar and Water

Mix vinegar and water in a 1:1 ratio.
Spray the mixture onto the inside of the windscreen and wipe it with a clean, dry cloth.
Shaving Cream

Apply a small amount of shaving cream to the inside of the windscreen.
Spread it evenly over the glass using a cloth.
Wipe off the excess with another clean, dry cloth.
Silica Gel Packs
Placing silica gel packs on the dashboard or other strategic locations inside the car can help absorb excess moisture, reducing the likelihood of fogging.

Proper Ventilation
Ensure your car's ventilation system is working correctly and use the defogging settings. Even though EVs don't generate engine heat, the HVAC system should still be effective in controlling humidity levels inside the car.

Anti-Fog Cloths
Special anti-fog cloths are available that are treated with chemicals to prevent fogging. Wiping the inside of your windscreen with one of these cloths can be an effective and convenient solution.

Additional Tips
Keep the windscreen clean, as dirt and grime can contribute to fogging.
Regularly replace the cabin air filter to ensure efficient operation of your car's ventilation system.
By using one or a combination of these methods, you can keep your windscreen clear and improve visibility while driving.






"Ahfuck

Offline mercenary for hire

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Re: Condensation and misting
« Reply #2 on: August 09, 2024, 10:06:13 am »
If your air con is on window misting doesn't happen.If the windows are open it won't happen either.

My yoke used to do that but they changed it after a software update.At one point the car was dumping warm air from the battery cooling into the cabin when it was parked up.Doesnt seem to do it anymore except when my rubber floor mats have water on them.

Mine has a setting where you can have it default to recirculate when the car is in P.I think it's because the car is trying to keep our the pollution or some bollox when it's in China.Make sure that's set to off if you have the feature.

Offline John m

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Re: Condensation and misting
« Reply #3 on: August 09, 2024, 10:28:05 pm »
Problem with leaving the window slightly open is the rain runs in from the roof .
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Offline mercenary for hire

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Re: Condensation and misting
« Reply #4 on: August 10, 2024, 12:11:42 am »
Just run the Aircon if it's raining.It really doesn't use that much energy.Maybe an extra Kilowatt per hour of driving.Modern Aircon systems are fairly efficient.I use mine all the time.It's more comfortable in the car with Aircon in this weather than in me gaff.

Offline watty

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Re: Condensation and misting
« Reply #5 on: August 10, 2024, 06:52:10 pm »
I think it's a design flaw.  I hate the way the side windows get 'frozen' if you have it on cooler and it's damp outside.  You end up not being able to use your side mirrors  >:D

Anyways, it's all above my paygrade.  I'm posting this quote from another website - maybe some expert onhere can decode it...

Quote
Having to change to eco mode every time is a pain and I often forget to do it resulting in a quicker than intended take off. but the biggest bugbear is the HVAC defaulting to AC on when you hit auto. What is that all about? In all of my cars for the last 20 years I have deliberately kept the AC off most of the time as I don't like icy cold air blasting in my face, unless the temp is above 25C and that is very rare in Ireland, the vast majority of the time I use AC is to clear the windscreen.  So to have AC on by default in an EV is (in [Northern Ireland]) just stupid.
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Offline Rat Catcher

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Re: Condensation and misting
« Reply #6 on: August 12, 2024, 03:58:41 pm »
My demister defaults to A/C too every time it's switched on. The problem (when it's warm outside) then becomes a battle between mist on the inside of the windscreen and ice forming on the outside of the windscreen. The closest I've got to striking a lasting balance is to have it on the lowest setting (conveniently No. 1 in my car) and divert it a few clicks away from the demist position so cold air is coming out the dashboard vents as well as the windscreen vents. The other option (when it's a bit colder outside) is to increase the temperature dial... which seems contradictory (i.e. running heat and air conditioning simultaneously) but is definitely more efficient than heat alone when demisting is required.

Do any of the new EV thingys come with heated front windows? I've never owned a car with a heated fromt window but I have experienced them in conducting driving lessons once or twice and they seem quite efficient and seem to dispense with the need to blow air at the window altogether.
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Offline watty

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Re: Condensation and misting
« Reply #7 on: August 12, 2024, 05:27:21 pm »

Do any of the new EV thingys come with heated front windows? I've never owned a car with a heated fromt window but I have experienced them in conducting driving lessons once or twice and they seem quite efficient and seem to dispense with the need to blow air at the window altogether.

I'm probably wrong but I thought Ford had the patent on heated front windows?
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Offline Rat Catcher

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Re: Condensation and misting
« Reply #8 on: August 12, 2024, 05:34:10 pm »
Quite possibly but I did own a 1978 Ford Escort and I don't think it was so equipped.
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Offline watty

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Re: Condensation and misting
« Reply #9 on: August 12, 2024, 07:20:34 pm »
https://blog.greenflag.com/2021/heated-windscreen/

Do all cars have heated screens?
Yes, an increasing number of cars do. For years it was mainly Fords, and cars made by companies that Ford had owned such as Land Rover, Jaguar and Volvo. That changed when Ford’s patent on the technology ran out in, I believe, 2011.

Now heated screens are available from most manufacturers such as Volkswagen/Audi/SEAT/Skoda, Mercedes-Benz, BMW/MINI, Land Rover, Jaguar, Volvo and Nissan. However, they are usually on higher specification models or available as an option.

Why don’t all cars have heated windscreens?
It’s a question of cost. It requires more wiring, another button, and that’s without the heating element in the windscreen itself which is more expensive than a standard screen. Plus, with its ventilation system, the car already has something that will demist a screen, although not quite as efficiently.
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Offline Octavia1

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Re: Condensation and misting
« Reply #10 on: August 12, 2024, 07:26:54 pm »
I taut heated windscreens wer on airplanes millions of yers ago ? How did ford patent them ?
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Offline Octavia1

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