All Electric.

Figaro said:
596 reincarnated ?
Complete with a whole new post covoid outlook.
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Oh, 596. There's a name for the past. I was thinking about him recently. He spent heaps of money on up-grading his new motorhome with every conceivable gadget and device just so he could have bragging rights at the camp ground in the South of France for six weeks and then ... well, we know what happened. He'll be going nowhere. Do we feel sorry for him?
 
KiwiKampers said:
Oh, 596. There's a name for the past. I was thinking about him recently. He spent heaps of money on up-grading his new motorhome with every conceivable gadget and device just so he could have bragging rights at the camp ground in the South of France for six weeks and then ... well, we know what happened. He'll be going nowhere. Do we feel sorry for him?
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Nope. :ROFLMAO:
 
Oh dear, it started off well. :giggle: :giggle::giggle:
 
autorouter said:
Since a lot of your heating requirement is heating water, and you're carrying the water with you as you drive, heating it from the engine cooling system seems an obvious way to go. You may need a bigger than normal hot water tank. Vacuum/foil insulation is the best for volume and weight.

Another possibility, often overlooked, is a 'heat battery'. It's a compact heat store made of molten salts, and can be heated either from the engine cooling, alternator power or excess solar power. Its heat can be used to heat tap water or the underfloor heating you mention. It's cheaper and more compact than electric batteries for a given energy storage capacity.
www.sunamp.com

Compact thermal energy storage for hot water, heating & cooling - Sunamp Global

Thermal energy storage solutions that make homes, buildings & vehicles more energy-efficient & sustainable while reducing carbon emissions.
www.sunamp.com www.sunamp.com

Also don't overlook the simple solar hot water heating - a black panel on the roof with water circulating to heat the water in the tank, either direct or indirect, with a solar-powered pump.
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Wildbill was experimenting with a water system heated from the engine a while ago, didn't hear how it went.
 
bigfred said:
Not quite an old codger yet but not far off and we are starting to think about travelling. In post Corvid world flying no longer seems appropriate. Looking at motorhomes with end bath, couple single beds and not too long.

I want everything from the toilet (slopping out is out of the question) to the heating to be fully electric, i dont want any gas on board as its bad for the environment. Being a techie ive done some bag of the fag packet calculations to see whats possible.

Using some of the modules from the tesla car (6 of them) would give an energy budget of 22.4 KWH per day, recharged of a high output 24v alternator (would take 2 hours tops). Anyone done this already - gone down the all electric route?

tesla module - 5.3kwh 24v x 6 32kwh (22.4 @ 70% charge) 156kg total
alternator 24v - 500a - 12kw


shower mira digital (non heating) 100w - 10 mins 1kw of hot water
underfloor heating - 220w/m2 10m2 - 2.2kwh on max

domestic combi microwave/oven bosche CMG676BS6B 3.6kw
domestic 2 zone inductoin hob smeg max 5kw on boost both zones 3.2kwh max normal
hot water instant unit 9kw
liginting/tv/charge phones etc - 2kwh per day
fridge freezer domestic A+++ 230kwh per annum ~ 0.65kwh per day


24 hour energy budget for 2 people

2 showers = 3kw
fridge = 0.65kw
heating (assume cold on high for average of 5 hours throughout the day/night)) = 8kwh
liginting/tv/charge phones etc - 2kw
cooking for around 1 hour - 4kw
hot water tap 5 mins continuos - 1.5kw
Incinertor toilet - 1kwh average


total budget - 20.5kwh

left in battery 1.9kwh

time to charge approx 2 hours
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We have done two units for customers pretty much exactly as you suggest.

PM me for more information if your interested

?

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PhilMary said:
Why?
Phil
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Because 3.5 tonne is not enough for electrically-powered vans due to the extra weight of the motive batteries. So a standard licence would need to have an increased weight allowance.
 
I'm not sure you can do it at 24V as electric cars run (and rapid DC charge) at a much higher voltage. My Leaf is 360Volts. It would be best to run the shower directly off this - no messing with DC to AC converters. The Leaf heat pump for heating and AC is very efficient so if you could get one of these from a scrapped car you would reduce heating/cooling consumption by half. Leaf batteries don't have any cooling system so are easier to install. The Tesla batteries being more compact require a cooling system.
 
Just my viewpoint. Let's compare propane gas production and the production of electricity. Which process is more harmful to the planet?

I am Very sure that if you do your investigations intently enough you will find that the gas that we use in our motorhomes creates 'less' of an overall carbon footprint than electricity.

The 'Save the World' Knee Jerk stipulation that we should all be using electric vehicles by ... whatever stupidly over confident date might be...is totally beyond sensibility.

During our enforced (and wise) lock down will allow some of you to watch a film by Michael Moore called 'Planet of the Humans'.



I have had this viewpoint for several years, ever since we were all told that we would be driving electric vehicles.

A really good watch!

p.s. At what age does one become and old codger??
 
The closest I’ve seen to this is by Advanced RV in the States. They build top end Mercedes sprinter conversions, $200k plus, built with huge lithium battery banks capable of running air con etc, black tank loo, no gas, fully winterised and made for off grid travel. Absolutely stunning. Great videos on YouTube, the engineering and attention to detail is fantastic, wish there was something similar over here.
Bill
 
dicksob said:
The closest I’ve seen to this is by Advanced RV in the States. They build top end Mercedes sprinter conversions, $200k plus, built with huge lithium battery banks capable of running air con etc, black tank loo, no gas, fully winterised and made for off grid travel. Absolutely stunning. Great videos on YouTube, the engineering and attention to detail is fantastic, wish there was something similar over here.
Bill
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I don't think it would be that difficult to do with a continental A class (nice flat roof) you could easily get 1000 to 1500 watts on the roof and with Lithium batteries being quite light 1000ah would go a long way to meeting all your electric needs for a good proportion of the year.

Martin

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chaser said:
Wildbill was experimenting with a water system heated from the engine a while ago, didn't hear how it went.
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I had an eberspacher hydronic heater on my first van with a valve fitted which allowed the engine coolant to pass through the hot water cistern. When arriving at the destination there’s a tank of hot water however the heater was noisy and inefficient and drew a lot on the battery.
 
I believe that what the OP is looking for is a Holiday Home, possibly in Europe, that he can drive to in his electric estate car filled with every home comfort.
 
Motorhomes are certainly not the first place to invest money to reduce carbon emissions. The lower mileages do not justify the cost or energy input. Much better to invest in energy efficiency at home (heat pump, solar, EV etc) where the savings will be much greater. Carrying a large battery around with you to provide heat and hot water doesn't make any sense or add up CO2-wise when a small bottle of propane does the job with fairly low CO2 emissions (the energy to move the battery will greatly out-way that needed for heating).
 
That may be a better, and cheaper, option!

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