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Search took 0.00 seconds. Search: Posts Made By: GeorgeRa
Forum: Electrical | Charging, Systems, Solar and Generators 12-30-2022, 03:14 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
If I would be in your situation, I would strongly...

If I would be in your situation, I would strongly consider old school of adding a second pump in parallel. Find out from your pump specification volume per stroke and get one with lower volume by...
Forum: Electrical | Charging, Systems, Solar and Generators 12-29-2022, 10:55 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
I thought that gas drivetrain was proved on...

I thought that gas drivetrain was proved on earlier Chrysler vehicles. If Promaster was available in 2012/13 I would also go with it.
Forum: Electrical | Charging, Systems, Solar and Generators 12-29-2022, 05:48 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
As far as I know gasoline heaters are tuned for...

As far as I know gasoline heaters are tuned for different stoichiometric ratio for combustion. Control board, fuel pump are most likely different. Ignition is the same via glow plug.
Forum: Electrical | Charging, Systems, Solar and Generators 12-29-2022, 05:22 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
Interesting comparison of risks, Fiat Ducato with...

Interesting comparison of risks, Fiat Ducato with 80% Camper Van experience from Europe vs unknown expertise.

Your lower risk is likely a parallel pump.
Forum: Electrical | Charging, Systems, Solar and Generators 12-29-2022, 04:22 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
Agree. This is an extensive discussion...

Agree.

This is an extensive discussion about Espar high altitude solutions. A lot of folks on that discussion are engineers. https://sprinter-source.com/forums/index.php?threads/63606/
For old...
Forum: Electrical | Charging, Systems, Solar and Generators 12-29-2022, 03:27 AM
Replies: 82
Views: 9,385
Posted By GeorgeRa
If in doubt looking at details of plastic molds...

If in doubt looking at details of plastic molds helps to digest the original source. Plastic molds are expensive and it seems as all Chinese heaters use the same molds like for example Vevor....
Forum: Electrical | Charging, Systems, Solar and Generators 12-28-2022, 09:44 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
Eberspacher S2 is good to 10,000' with auto...

Eberspacher S2 is good to 10,000' with auto adjustment and it has brushless DC motor. https://heatbreeze.com/chinese-diesel-heater/
Forum: Electrical | Charging, Systems, Solar and Generators 12-28-2022, 07:04 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
I got a few items from Heatso, quick shipment and...

I got a few items from Heatso, quick shipment and low cost. https://www.heatso.com/espar-airtronic-as3-d2l-12v-7500btu-heater-kit
Forum: Electrical | Charging, Systems, Solar and Generators 12-27-2022, 08:23 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
My heater is under the passenger seat, so, it is...

My heater is under the passenger seat, so, it is a job to get access to it.

Timberline by Elwell is using Russian furnace, I assume they are still getting it someway. Their control i integrated...
Forum: Electrical | Charging, Systems, Solar and Generators 12-27-2022, 07:15 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
Having a single motor driving both fans reduce...

Having a single motor driving both fans reduce the cost and forces same RPM for all heat outputs from low to high. Combustion pressure is rather low, I am basing this on exhaust outflow length, a few...
Forum: Electrical | Charging, Systems, Solar and Generators 12-27-2022, 05:44 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
Installation manual for my Eberspacher D2 heater...

Installation manual for my Eberspacher D2 heater was very specific with limitations in exhaust and intake lengths, diameters. Recirculating air ducting is also restricted to maximum lengths or total...
Forum: Electrical | Charging, Systems, Solar and Generators 12-27-2022, 02:58 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
Espar, Webasto, Russian ones, Chinese ones are...

Espar, Webasto, Russian ones, Chinese ones are very similar. One end of a motor has a fan for recirculating heated air and on the other end there is a fan (compressor) to feed air into combustion...
Forum: Electrical | Charging, Systems, Solar and Generators 12-27-2022, 03:24 AM
Replies: 82
Views: 9,385
Posted By GeorgeRa
I don’t think a variable back pressure exhaust is...

I don’t think a variable back pressure exhaust is required. Variable intake pressure is easily handled with variable compressor rpm. We will see how they do it if they ever deliver.

To retain full...
Forum: Electrical | Charging, Systems, Solar and Generators 12-27-2022, 02:30 AM
Replies: 82
Views: 9,385
Posted By GeorgeRa
Depends. If they are pressurizing the combustion...

Depends. If they are pressurizing the combustion chamber the BTU output will not drop.
Agree, but implementation could be expensive. To maintain the same pressure in the combustion chamber by...
Forum: Electrical | Charging, Systems, Solar and Generators 12-26-2022, 11:59 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
Same from another site - it is about 3.5% / 1000'...

Same from another site - it is about 3.5% / 1000' https://westerntransportationinstitute.org/wp-content/uploads/2018/02/TRIPTAC-TA_Alternative_Fuesl_Altitude.pdf
Forum: Electrical | Charging, Systems, Solar and Generators 12-26-2022, 11:11 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
I think so, maximum heater heat output will be...

I think so, maximum heater heat output will be reduced by lower oxygen content, just like lower power of internal combustion engines with altitude.
Forum: Electrical | Charging, Systems, Solar and Generators 12-26-2022, 10:12 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
New third generation Airtronics is good up to...

New third generation Airtronics is good up to 18,000' with long life and quieter brushless motor.
...
Forum: Electrical | Charging, Systems, Solar and Generators 12-26-2022, 06:54 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
My Airtronics D2 has a fan to force air flow...

My Airtronics D2 has a fan to force air flow around combustion chamber heat exchanger and compressor wheel to force air into combustion chamber. Webasto is the same.

This new heater has built-in...
Forum: Electrical | Charging, Systems, Solar and Generators 09-30-2022, 07:52 AM
Replies: 82
Views: 9,385
Posted By GeorgeRa
Before pump frequency device for higher altitude...

Before pump frequency device for higher altitude Eberspacher used a pump with lower flow – shorter stroke. https://www.heatso.com/espar-eberspacher-high-altitude-fuel-metering-pump-kit-for-d2-d4-12v/...
Forum: Electrical | Charging, Systems, Solar and Generators 09-29-2022, 07:15 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
Interesting product - "the Velit air heater...

Interesting product - "the Velit air heater features a dynamically balanced blower fan and an ultra-quiet fuel pump" Continually variable air flow will keep stoichiometric ratio constant, good luck.
Forum: Electrical | Charging, Systems, Solar and Generators 09-29-2022, 06:44 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
Based on my experience combustion is continues...

Based on my experience combustion is continues with pump pulses in sub second range. There is sufficient buffer volume in the fuel feeding system to the combustion chamber to provide constant flow of...
Forum: Electrical | Charging, Systems, Solar and Generators 09-29-2022, 02:01 PM
Replies: 82
Views: 9,385
Posted By GeorgeRa
As far as I know controls are very simplistic...

As far as I know controls are very simplistic based on barometric pressure. Eberspacher has fixed frequency ranges starting at sea level to 5000’. Problems start at 7500”.

Pitch control could be...
Forum: Electrical | Charging, Systems, Solar and Generators 09-29-2022, 11:14 AM
Replies: 82
Views: 9,385
Posted By GeorgeRa
In all diesel or gasoline furnaces like Webasto,...

In all diesel or gasoline furnaces like Webasto, Eberspacher, Russian or Chinese derivatives oxygen/air flow is constant and fixed and fuel flow is controlled by pulse frequency. I thought Webasto...
Showing results 1 to 23 of 23

 
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