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The Fireless Cooker That Feeds

notechmagazine.com

11–20 of 44 posts

Re: The Fireless Cooker That Feeds

#11
post #6

What problem is this trying to solve exactly

Cooking when/where energy is scarce. Very useful to save on fuel while camping, for example. Also, I suppose, next time the electric grid is down and you want to cook on battery.

Another benefit is that it reduces the heat transferred to the living environment during cooking. Might be useful in a small living space like an RV or tiny house.

Re: The Fireless Cooker That Feeds

#12
post #2

A longer article that was cited, https://www.lowtechmagazine.com/2014/07/cooking-pot-insulati...

Everything related to heat transfer is still relevant and very, very interesting, but I love how dated the assumption of non renewable energy is now in that method of calculating thermal efficiency.

Who cares if the perfect turbine could only ever convert 59% of the wind power through it!

Re: The Fireless Cooker That Feeds

#13

It's a very large teapot cosy, in other words. Seems reasonable, though obviously you still need some way to bring the pot up to temp (for that cast iron, induction would be efficient if not low-tech).

Yeah, when I think of a cooker, I think of something that heats something up, not just keeps it going.

The stove with one burner dropped down [1] seems more practical, not requiring a separate device/extra step.

[1] https://krisdedecker.typepad.com/.a/6a00e0099229e8883301a3fd...

Re: The Fireless Cooker That Feeds

#14

What problem is this trying to solve exactly

A lot of people out in the country don't actually have a gas line to their house, and cook using bottled gas. I lived in a situation like that at one point - the cost of the gas saved by the device wasn't really important to me, but it was the burden of making a half day trip to the city to replace the bottle that pushed me to conserve gas.

Re: The Fireless Cooker That Feeds

#16
post #6

Earlier quoted context omitted.

Cooking when/where energy is scarce. Very useful to save on fuel while camping, for example. Also, I suppose, next time the electric grid is down and you want to cook on battery.

Another benefit is that it reduces the heat transferred to the living environment during cooking. Might be useful in a small living space like an RV or tiny house.

It technically just prolongs the amount of time that the heat is transferred right?

That would still be useful if you're in a small space and the heat loss of the space is greater than the heat loss of the insulated pot.

Re: The Fireless Cooker That Feeds

#17
When cooking, the rate of heat needed to maintain the same temperature is exactly the rate at which the food is cooling. So heating up a pot and insulating it is roughly equivalent to heating up a pot and continually heating it to maintain the same temperature. If we changed the culture of cooking to recognize this, we could save a lot of energy.

Re: The Fireless Cooker That Feeds

#18

It's a very large teapot cosy, in other words. Seems reasonable, though obviously you still need some way to bring the pot up to temp (for that cast iron, induction would be efficient if not low-tech).

They do mention that in the article "doubles the efficiency of any cooking device because it shortens the time on the fire"

Re: The Fireless Cooker That Feeds

#19
post #7

Little nitpick: the title is "The Fireless Cooker that Feeds Low-tech Magazine", as in "this is the fireless cooker we use".

Thanks for this. I was quite confused by the title. It appears as "The Fireless Cooker That Feeds" for me. I thought, "Isn't any sort of cooker supposed to feed?"

Re: The Fireless Cooker That Feeds

#20
Explaining this just to make sure I get it.

When we cook we're bringing up food to a certain temp, then maintaining it at that temp till it's done cooking. If we could perfectly insulate it, then it could hold that temp as long as we want without being on the fire. So the only energy input is getting it hot -- after that it's cooking on its own.

So this is trying to approximate that by insulating the pot.

I always sort of assumed that there's a lot of heat 'loss' from food itself heating up -- as in most the cook time is getting the food up to the temp (i.e. when cooking a steak), not waiting for it to cook at the temp. But I suppose that for certain grains and stews and things that thinking is wrong.

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