Cooling fridge - which is cheaper Electric or LPG (21 Viewers)

[VXman]

So, I need to cool the fridge on my drive prior to a trip.

LPG @99p per litre Fridge consumption 468g in 24 hours
Mains electric @ £0.225 per kwh power consumption - 240W

I could probably work it out but I'm not totally confident in my maths and electric understanding.

Appreciate some other input.

 

[VXman]

If it helps OP on our fridge in summer, I clocked the fridge at using 3kwh over 24 hours to cool. That was at 24 celcius outside average. I suspect it'd use rather more (around 1 kwh every 3 hours) if it was warmer as that was the peak usage.

thats 66p

 

[VXman]

You need a compressor fridge next time you buy one then. Mine runs on sunshine power, it's a bit cloudy today here but there's still enough solar to run the fridge AND recharge the battery

This one is only 2 years old. They cost nearly £1500, I hope never to change it - will probably sell the van first.

 

[starquake]

thats 66p

Yes, but it'd probably be more than the gas at 30 celcius with the peak usage I metered (250-300w constant), so likely quite a bit worse in a very hot period. (3 hours per kwh, so roughly 8 over 24 hours, or £1.60 in electric at 20p). I would imagine in a warm summer it would cost less in the gas used potentially at 99p a litre, and a litre being 500g.

 

[Barchetta47]

You don't need the other options if you have a fridge that runs reliably and efficiently off 12v. Especially if you have solar

By the way, my house compressor fridge is 21 years old, ie it's been running for 21 years continuously and never broke down you'd probably need half a dozen absorption fridges to achieve that

Nope 21 year old absorption fridge still running strong!! Well it’s had a couple of valves and a thermocouple and at one point was known as the F’ing Fridge

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[HKF]

I must be a total tight wad…….
Just before I start the van…. I fill it he fridge with frozen food and everything else ice cold….. Free power from battery all the way to our destination

That's what I do. I don't see the point of pre-cooling when you then have the door open while you're loading it

 

[gpat]

I must be a total tight wad…….
Just before I start the van…. I fill it he fridge with frozen food and everything else ice cold….. Free power from battery all the way to our destination

The power that is used by your fridge on the road is probably the most expensive of all. It's is using a diesel engine that is using fuel that has customs charges on it driving an alternator.

I fill my freezer with pre frozen ready meals either home cooked or bought. It certainly will help to reduce the cooling costs whichever source you use.

It won't because you have already paid to cool them in your home fridge.

That's what I do. I don't see the point of pre-cooling when you then have the door open while you're loading it

 

[Richard n Ann]

Nope 21 year old absorption fridge still running strong!! Well it’s had a couple of valves and a thermocouple and at one point was known as the F’ing Fridge

21 years continuously? I was careful to include the word. Impressive if so

 

[steve69]

It won't because you have already paid to cool them in your home fridge.

Which is a tiny fraction of what it would cost to freeze them in your van freezer. Especially so on gas.

 

[Razamataz]

So to sumerise…….
I’m dead right

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[gpat]

Which is a tiny fraction of what it would cost to freeze them in your van freezer. Especially so on gas.

I'm not sure it would be a tiny fraction. It might be slightly less.

 

[Barchetta47]

21 years continuously? I was careful to include the word. Impressive if so

Ah got me there, just speed read! However for the last 3 years it’s run for over 180 days a year. I’m hoping it’s got another 10 years left. Damn you’ve made me say it now