Induction Cooking

PaulRainbow said:
https://www.youtube.com/watch?v=GvDCLtN22jY&feature=youtu.be

Thoughts ?
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I watched that last night and was impressed.

We have an induction hob at home and I wouldn't swap it for anything. I hate having gas on board so I've got an origo spirit stove, but if I could swap it for induction I'd be happy..

In a marina with shore power it wouldn't be an issue ( yes I know I've posted about that on another thread ), but I'd be interested to see some real world calculations of the power needed to boil a kettle whilst underway.

Also, they fitted a very nice ( and no doubt expensive ) bank of li-ion batteries so they have the possibility to use more power from them and then recharge around the clock with wind and solar.

So apart from johnalisons issue above, I say if you've got the generator power bring it on :)
 
Standard fitment to a lot of the big boats for quite a few years now. I had one in my house and the first night got very angry with it as it wasn't working...... wrong pans :( :( :(

I have an electric grill to go on my flybridge. Runs ok on inverter from DC power or from shore power.

dolabriform said:
I watched that last night and was impressed.

We have an induction hob at home and I wouldn't swap it for anything. I hate having gas on board so I've got an origo spirit stove, but if I could swap it for induction I'd be happy..

In a marina with shore power it wouldn't be an issue ( yes I know I've posted about that on another thread ), but I'd be interested to see some real world calculations of the power needed to boil a kettle whilst underway.

Also, they fitted a very nice ( and no doubt expensive ) bank of li-ion batteries so they have the possibility to use more power from them and then recharge around the clock with wind and solar.

So apart from johnalisons issue above, I say if you've got the generator power bring it on :)
Click to expand...
 
matthewriches said:
Standard fitment to a lot of the big boats for quite a few years now. I had one in my house and the first night got very angry with it as it wasn't working...... wrong pans :( :( :(
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LOL .... Even with those that are suppose to work, there are induction pans and then there are induction pans.. some of them don't have enough mass to work on all the 'rings / areas" and only work on the smaller ones. Ours has a pan sensor and it's really annoying when you think it's cooking only to turn your back and the hob to switches the area off :(

The only things that are guaranteed are my solid 'two hands to pickup' cast iron skillet and a very old solid steel big stew pan :)
 
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I was thinking more about the whole project, rather than just the hob. On the surface, it looks pretty decent. The batteries provide good power. He talks of being able to take the batteries down to 80% discharged, that's technically 640ah. It's going to take some serious charging equipment to get them charged back up the next day, with a little bit of an allowance for inefficiencies and power usage during the day you could be looking at 10kwh or more. My 260w of solar gives yields around 1kwh on a nice sunny day.

Something that doesn't get mentioned in the video is the cost of the batteries. Well, they are £1199 each, so that bank of batteries cost £9592 !!

My batteries cost just over £100, will a Lithium one last 12 times as long ? I currently use 2 x 4.5kg bottles of Calor butane in a year, onboard for the whole year, plus a few quids worth of electric for boiling the kettle in the marina. What about the grill and oven ?

All in all, the tech is interesting, but the economics just don't stack up and i can't see the big deal about carrying some gas onboard. Is it really hard to source as you travel around ? My locker hold four bottle, i could go two years without a refil :)
 
PaulRainbow said:
I was thinking more about the whole project, rather than just the hob. On the surface, it looks pretty decent. The batteries provide good power. He talks of being able to take the batteries down to 80% discharged, that's technically 640ah. It's going to take some serious charging equipment to get them charged back up the next day, with a little bit of an allowance for inefficiencies and power usage during the day you could be looking at 10kwh or more. My 260w of solar gives yields around 1kwh on a nice sunny day.

Something that doesn't get mentioned in the video is the cost of the batteries. Well, they are £1199 each, so that bank of batteries cost £9592 !!

My batteries cost just over £100, will a Lithium one last 12 times as long ? I currently use 2 x 4.5kg bottles of Calor butane in a year, onboard for the whole year, plus a few quids worth of electric for boiling the kettle in the marina. What about the grill and oven ?

All in all, the tech is interesting, but the economics just don't stack up and i can't see the big deal about carrying some gas onboard. Is it really hard to source as you travel around ? My locker hold four bottle, i could go two years without a refil :)
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He talks about the hassle of finding gas and difficulty of different adaptors in the places they do find it. I must admit that I thought they were standard worldwide but my naivety was misplaced
https://en.wikipedia.org/wiki/Propane,_butane,_and_LPG_container_valve_connections

Yes the cost is incredible, but if you can generate the necessary power off grid and are able to get the equipment sponsored? then why not.

It's a much greener energy form of cooking than gas, just like sails are greener than mobo's ;)
 
We have 4 Trojan batteries and 400w solar and use an electric kettle and an electric hob to cook on most of the time. Rarely ever go below 80% discharged and use approx 110ah per day (mostly our huge fridge) and is quickly replenished by the solar each day. The electric hob is not induction it is just an standard electric one with ceramic top. Used about 10ah for a meal.

We have an induction hob also but our inverter doesn't like it so it only comes out on the rare occasions we are in a marina. Only use gas for the grill and oven mostly now.

Paul, another forumite, has half as many AH's in his battery bank and less solar than us and uses an induction hob daily also.
 
dolabriform said:
I'd be interested to see some real world calculations of the power needed to boil a kettle whilst underway.
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Presumably if your boat's electrical system is man enough for electric cookery, you'd just use a standard 3kW domestic kettle rather than putting a stovetop one on the hob.

Pete
 
prv said:
Presumably if your boat's electrical system is man enough for electric cookery, you'd just use a standard 3kW domestic kettle rather than putting a stovetop one on the hob.

Pete
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Hi Pete

I was just using that as a hypothetical reference. ie how much energy does it take to boil 1 ltr of water with an induction hob? Then how efficient is it for say cooking pasta, and roughly how much energy would one use per day.

David
 
prv said:
Presumably if your boat's electrical system is man enough for electric cookery, you'd just use a standard 3kW domestic kettle rather than putting a stovetop one on the hob.

Pete
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I just bought a smaller 1kw kettle and it is enough for two cups and takes approx 2 mins to boil. I can work out the exact power consumption later and report back.
 
northcave said:
I just bought a smaller 1kw kettle and it is enough for two cups and takes approx 2 mins to boil. I can work out the exact power consumption later and report back.
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1/30 kWh by any chance? ;)

(Ok, only kidding. I know that if 1kW is the output power, the input will be a bit more).
 
Angele said:
1/30 kWh by any chance? ;)

(Ok, only kidding. I know that if 1kW is the output power, the input will be a bit more).
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Ok well the kettle draws 60amps when in use and takes 2mins to boil half a litre. The hob about 90 but it is intermitant as it varies the heat. Both are measured at the Link 2000 which is accurate in my opinion. I'll take a closer look at usage over the coming days as we cook and see roughly the power consumption in real life.
 
northcave said:
Ok well the kettle draws 60amps when in use and takes 2mins to boil half a litre. The hob about 90 but it is intermitant as it varies the heat. Both are measured at the Link 2000 which is accurate in my opinion. I'll take a closer look at usage over the coming days as we cook and see roughly the power consumption in real life.
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I watched the Delos video a couple of days ago, so can't remember the exact details. But I think he said the kettle on the induction hob drew about 50Amps (and the microwave 70, or was it the other way round?) and took about 6 mins to boil. Presumably rather more than 2 cups worth.
 
Watched a cookery demonstration last week. The hob kept getting wet and switching itself off. My first opinion was; not ideal for a boat!
 
Plugged into shorepower we use a George Foreman electric grill, electric kettle, toaster and 3 layer steamer. Gas is used for (Wok) stir frying (Inc doing chicken livers/peppers/mushrooms speciality de la maison, saute cooking, fish or spag bol type stuff. We live aboard and a 10lb gas cylinder lasts a full 12 months. Also have an electric infrared hob top (backup for ultra cold gas problem days)
with a ceramic top plate also for grilling for teppanyaki/raclette cooking. We have a 4kw diesel generator too but not routinely used. For BBQ we use electric grill on extension lead​
 
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Since our inverter doesn't like the induction hobs we tried a standard electric hob and it's really good. Ok the heat isn't instant like an induction hob but it's perfectly fine working form the batteries. It's a solution for those that can't get an induction hob to work.
 
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