Oven, Alarms and Fridge

[nicknorman]

 

We have an LPG cooker (and rings) at home, this has a 220v controlled gas valve.

You cannot get a gas flow without the power switched on, and, there is a red 'escape button' by the door, so, if there is a problem you can hit the button on the way out and it cuts off the electricity and hence the gas supply.

 

Poblem is that when we have a power cut we dont have any gas either !!!

 

Sounds similar to that mentioned above.

Interesting - does it have a fan?

[Alan de Enfield]

No - No fan.

The only electrickery goes to the valve just above the floor where the gas pipe enters the kitchen

[ditchcrawler]

Our Shoreline12v fridge (with icebox) consumes about 1.5 amps on average.

My LEC 240 volt fridge and MasterVolt true sine inverter uses about 1.6 Amps per hour over 24 hours if I convert to 12 volts. But you have to allow for the extra cost of an inverter on top of the fridge.

[nicknorman]

My LEC 240 volt fridge and MasterVolt true sine inverter uses about 1.6 Amps per hour over 24 hours if I convert to 12 volts. But you have to allow for the extra cost of an inverter on top of the fridge.

Pedant alert: What is 1.6 amps per hour?

[wonderdust]

Looks like only a 25w bulb and ignition is required on 240v, no fan, so a match will do

http://fiftyeggs.blob.core.windows.net/bekoupload/manuals/BDG582.pdf

 

[ditchcrawler]

Pedant alert: What is 1.6 amps per hour?

It is an average current flow from my batteries to power my fridge. Well its not actually, it is what it would be if my battery voltage was a nominal 12 volts like most boaters, mine is a nominal 24 volts so the average current is only 0.8 Amps. The reason I put per hour was to tie in with earlier quoted power requirements for fridges.

[nicknorman]

It is an average current flow from my batteries to power my fridge. Well its not actually, it is what it would be if my battery voltage was a nominal 12 volts like most boaters, mine is a nominal 24 volts so the average current is only 0.8 Amps. The reason I put per hour was to tie in with earlier quoted power requirements for fridges.

Since you are biting I'll point out that 1.6 amps per hour is a rate of change of current flow and so fairly meaningless and not what you meant! You could say it uses "an average of 1.6A", or it uses 1.6x 24 =" 38.4 AH per day".

 

I did say pedant alert but I don't apologise for it, because being dimensionally incorrect just causes confusion and stores up problems for later calculations especially for those who find lektrik daunting. It is so easy just to get it right!

 

Now where is that thread on the misuse of apostrophe's?

Edited April 22, 2013 by nicknorman

[Chalky]

*300 Watts

 

For how long and into what load? Cheap 300W inverters may only be able to produce 300W into a resistive load (bulb) for short time before they over heat. In effect they're a lot lower rating but bigged up by marketing. Check the continuous rating before buying. Also check what load they can actually drive. Something like a motor or a coil has a very different set of characteristics compared to a bulb and the inverter will need to be de-rated to cope with them (Google power factor). Also inverters need a good solid power supply (thick cables) and ample cooling (over heating will severely reduce the life expectancy).

[ditchcrawler]

Since you are biting I'll point out that 1.6 amps per hour is a rate of change of current flow and so fairly meaningless and not what you meant! You could say it uses "an average of 1.6A", or it uses 1.6x 24 =" 38.4 AH per day".

 

I did say pedant alert but I don't apologise for it, because being dimensionally incorrect just causes confusion and stores up problems for later calculations especially for those who find lektrik daunting. It is so easy just to get it right!

 

Now where is that thread on the misuse of apostrophe's?

I am not biting and you will see by my reply that is exactly what I said I meant, and average current flow of 1.6 Amps and that the bit where I said per hour earlier was to be in line with other amounts stated. I think if I remember correctly Shoreline quote their units use current like that. By the way whats the cloud cover at the moment?

[nicknorman]

I am not biting and you will see by my reply that is exactly what I said I meant, and average current flow of 1.6 Amps and that the bit where I said per hour earlier was to be in line with other amounts stated. I think if I remember correctly Shoreline quote their units use current like that. By the way whats the cloud cover at the moment?

I don't see any other posts in this thread quoting amps per hour. Average Amps, yes. AmpHours over a defined period, yes, both of which are dimensionally correct. But not amps per hour.

 

Anyway, pedant now signing off!

 

Cloud cover? Provided I have decent 3G reception its fine!

[Keeping Up]

My LEC 240 volt fridge and MasterVolt true sine inverter uses about 1.6 Amps per hour over 24 hours if I convert to 12 volts. But you have to allow for the extra cost of an inverter on top of the fridge.

 

That's a strange place to put an inverter.

[gary955]

Thanks nicknorman - good sound advice. I think a 12V fridge will keep it simple, so am going to stick with the option discussed.

I have an unused (from new) Isotherm 12v fridge for sale. It uses the same very efficient danfoss compressor as the shoreline fridges, but also has an automatic power supply able to run off 240v when available. It has slight cosmetic damage to the (replacable) door card, which is the reason it was removed from a gin palace fit out. It has no ice box however, larder fridge only.

PM me if you're interested.

[Jambo]

Over on another forum I was discussing efficient 12V fridges with someone and they informed me about DC fridges / freezers. These are very efficient and are used for vaccine storage in the developing world (i.e. off grid solar applications).

 

They apparently aren't cheap (about the £400 mark) but their consumption is very low, much lower than absorption or peltier effect fridges.

 

I particularly like that you can switch them between being a fridge or a freezer as you wish

 

http://www.steca.com/index.php?Gefriertruhe_en

http://www.sundanzer.com/

http://engelfridges.co.uk/