Diesel heater(new video of it running)

[Dylanch]

Pretty neat idea. Definitely looks to help out climate use and range from the vehicle. Would be nice if it was an add on that was turn key and built for the truck.

icing over

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[02Reaper]

icing over

Have you noticed the lightning not being able to keep you warm so far without the diesel heater?

 

[lightspeed]

Look at the temp in the top right. I'm also towing a trailer

Maybe eventually you can get some data collection going and measure the difference with and without the aux heater? Hard to tell what you're saving in this case because of the trailer (190 mile range might be pretty good depending on what you're towing -- I assume you have the ER truck).

Interesting that battery heating is only 6% which seems quite good for that temp. Did you precondition the battery?

 

[Dylanch]

Maybe eventually you can get some data collection going and measure the difference with and without the aux heater? Hard to tell what you're saving in this case because of the trailer (190 mile range might be pretty good depending on what you're towing -- I assume you have the ER truck).

Interesting that battery heating is only 6% which seems quite good for that temp. Did you precondition the battery?

Yes left home battery was 20 degrees and after dcfc at 50% it was up to 30

 

[Akbrian]

I would be interested in efficiency of heater. 1 gallon of diesel is the same energy as around 40kWh. Efficiency will directly impact diesel heat output and addition to the system. A typical efficiency in this type of system is likely 20-30% even though the heater might claim to be 70%. Meaning you are only adding 8-12kWh to the system for every gallon burned.

This is a really neat idea for cold climate vehicles. My guess is that based on the laws or thermodynamics, energy and cost it doesn’t pencil out however if the goal is to maximize battery available for driving and not turning into a popsicle it hits the mark.

 

[lightspeed]

I would be interested in efficiency of heater. 1 gallon of diesel is the same energy as around 40kWh. Efficiency will directly impact diesel heat output and addition to the system. A typical efficiency in this type of system is likely 20-30% even though the heater might claim to be 70%. Meaning you are only adding 8-12kWh to the system for every gallon burned.

This is a really neat idea for cold climate vehicles. My guess is that based on the laws or thermodynamics, energy and cost it doesn’t pencil out however if the goal is to maximize battery available for driving and not turning into a popsicle it hits the mark.

Not really. The efficiency of burning anything to generate HEAT ENERGY is very high. You might be thinking of the efficiency of burning gas to generate MECHANICAL energy. A decent burner system should get 90%+ of the energy in the form of heat.

 

[Regular150]

iv had the diesel heater for a week, and have burnt less than a dolar of fuel driving around. so im ok with that. its ran for a good 4-5 hours its quite efficent. so no, me starting my gas trucks would burn more than that heating up

https://m.vevor.com/diesel-heater-c...e-for-truck-rvs-car-motorhomes-p_010633661202

Looks like there's commercial options for this! Not as integrated into HVAC lines but your concepts are sound! Love it.

 

[Akbrian]

Not really. The efficiency of burning anything to generate HEAT ENERGY is very high. You might be thinking of the efficiency of burning gas to generate MECHANICAL energy. A decent burner system should get 90%+ of the energy in the form of heat.

This is not a burner heater system it is a heat exchanger system. You need to optimize the exchanger surface area and flow rates with the temp in and out to get anywhere close to 90%.

you can do some quick rudimentary calcs but need to know some temperatures. Take the volume of the cabin and starting temperature. Run a specific quantity of fuel through the heater, heating the cabin and measure the new end temperature. You know the energy equivalent of the diesel burned and the energy that made it to the cabin by way of the temperature change and volume of air.

 

[lightspeed]

This is not a burner heater system it is a heat exchanger system. You need to optimize the exchanger surface area and flow rates with the temp in and out to get anywhere close to 90%.

you can do some quick rudimentary calcs but need to know some temperatures. Take the volume of the cabin and starting temperature. Run a specific quantity of fuel through the heater, heating the cabin and measure the new end temperature. You know the energy equivalent of the diesel burned and the energy that made it to the cabin by way of the temperature change and volume of air.

From the picture, it looks like a hydronic heating system like RVers use. I don't know which exact system he's using, but you can get hydronic systems with 87% thermal efficiency or higher. In this case, he's using a 'boiler' to just heat the glycol and then relying on the trucks heat exchanger to warm the air.

Hard to say what the efficiency of this particular setup is, but in theory with proper design you can get very high efficiency.

 

[Dylanch]

https://m.vevor.com/diesel-heater-c...e-for-truck-rvs-car-motorhomes-p_010633661202

Looks like there's commercial options for this! Not as integrated into HVAC lines but your concepts are sound! Love it.

To use air heaters u have to cut 2 4 inch holes threw the srywall

 

[Dylanch]

Try running your truck in winter with no cabin heat at all. You still wont get anywhere near the rated range. Cabin heat is a relatively small portion of winter range degradation.

man, i dissagree to that completely, if you preheat your cabin it presets the battery temp to 20 degrees, if you dcfc even in winter its heating my battery up to 30 deg, theres no way the ambiant temp is effecting the battery that much if the truck does its job. i drove 300km yesterday with climate controll using 0%

 

[Maquis]

man, i dissagree to that completely, if you preheat your cabin it presets the battery temp to 20 degrees, if you dcfc even in winter its heating my battery up to 30 deg, theres no way the ambiant temp is effecting the battery that much if the truck does its job. i drove 300km yesterday with climate controll using 0%

Typical EV battery temp vs capacity curve:

Sure, preconditioning mitigates this initially, but on a long trip, battery power will be used to keep the battery comfy.

 

[Dylanch]

Typical EV battery temp vs capacity curve:

Sure, preconditioning mitigates this initially, but on a long trip, battery power will be used to keep the battery comfy.

I'm sad to say it doesn't. I watch it on my car scanner it preheat than shuts off till it's plugged in again

 

[V8BoatBuilder]

This is killer! I have thought about doing this as well, as we've installed a few on boats. Kudos on the mod.

 

[lightspeed]

Typical EV battery temp vs capacity curve:

Sure, preconditioning mitigates this initially, but on a long trip, battery power will be used to keep the battery comfy.

That depends on a lot of factors. The battery generates heat itself as it's used so if it generates enough heat to keep it warm without extra warming then no extra battery usage. This depends on how well it's insulated against outside temps and other factors.

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