HEAT RETENTIVE PLATES

Excellent concept!

I for one would be very interested in your method, even if I never made a single plate. I'm guessing maybe some sort of silicon carbide microwave susceptor (judging from the cutaway view shown on your site). But I'm impressed that you can make this work without undue thermal stress on the rest of the plate. Is the susceptor insert perhaps able to move relative to the more-conventional ceramic surrounding plate? From the drawing that looks possible, but I'm mystified how to do that without having it rattle. Good work!

And thanks for the offer to share the secret.

Best regards,

Bob Masta dqatechATdaqartaDOTcom D A Q A R T A Data AcQuisition And Real-Time Analysis

bob, sounds like a scam to buy his plate. much like a perpetual motion machine. if a plate retained heat so well, it wouldn't do much good in keeping steaks warm either.

take a brick out of a raku kiln for 1 hour & you'll see a good deal of heat "retained" lost to understand the scale of his claim. it'll reach room temp in an hour, maybe 1/2 hour.

THAT's from 1800F... AND it'll keep steaks warm...

now, pull anything from say 400F out & leave it sit. ~ room temp pretty quick. (even zapped in a micro)

the claim doesn't make sense in the heattransfer world which is why no such device has been discovered in 10,000 years... unless it's an exceptional insulator which doesn't keep steaks warm.

see ya

steve

Bob Masta wrote:

Juan,

I wish you all success with this. If in fact you have invented *the better mousetrap* as the saying goes, it should really run!

Steve Bath UK

In article , Juan writes

I don't see him claiming anything that violates any laws of physics. A plate is a big mass, relative to the food you put on it. If you put food on a cold plate, the food will cool down faster than if you put it on a warm plate, because the food is transferring heat to the plate due to the temperature difference. As I understand his design, it just reverses the situation so the plate is as hot as or hotter than the food. As a bonus, the plate apparently has embedded in it a big slug of some substance that heats up via microwaves. That extra mass will further extend the temperature decay time. Nothing tricky about that, it's just like heating a heavy plate in a conventional oven before you serve the food. His invention is all about heating it quickly in the microwave, without cracking the plate.

Best regards,

Bob Masta dqatechATdaqartaDOTcom D A Q A R T A Data AcQuisition And Real-Time Analysis

Yes, but the mass of the "energy reservoir" will - by definition - require a large amount of energy to heat it up sufficiently.

Whether it is possible for this to be practical will depend on whether a standard microwave oven could lead to the absorption of sufficient energy in 1 minute to provide a sufficient reservoir of energy to maintain the plate's temperature for eg 30 minutes.

Also it needs to be borne in mind that the "standard" part of the plate will not be heated by the microwave energy and therefore the internal reservoir also needs to provide sufficient energy to bring the rest of the plate up to its "hot" condition.

I'm far from convinced !

pHIL

Hi Steve, it is not a scam, the trick is releasing the heat at a controlled rate according to the stefan-Boltzmann law., it is not based on insulation but containing the radiation in a tight cavity. If the surrounding temperature of the radiating body is high enough, it will contain the radiation.go to this site, look for radiation, then stefan-boltzmann and look at the formula.. if you have more questions (doubts) please let me know.

steve snipped-for-privacy@aol.com wrote:

steve, I forgot, you can't buy them, I have the only working prototypes. By the way, If you prehea t them for 1:15 minutes, they remain HOT FOR

Bob, The trick is not only the mass of the heater or susceptor inside the plate, but how efficient it is to capture microwave energy very fast and how it is released at a controlled rate. I capture about 1200 Watts minutes of energy and release it at the rate of about 37.5 watts per minute, that is like having a light bulb of 37.5 Watts inside your plate. Could you post this to all your groups? I'm new to this. I will really appreciate it. Juan

Bob Masta wrote:

What sort of firing range pottery can this technique be used for? When you mention red earthenware for the heater, that makes me think it is for low-fire (unvitrified) pottery only. Or do you have some other additives that allow it to fire hotter without melting? My concern is that if the overall plate is unvitrified earthenware, there will be an additional unwelcome microwave problem due to water trapped in the absorbent body. That might not happen right away, but sooner or later, after enough washing cycles, some user is going to discover that the rims get *hot*, just due to trapped water, independent of your susceptor. Just a thought.

Thanks for your generous sharing of information!

Best regards,

Bob Masta dqatechATdaqartaDOTcom D A Q A R T A Data AcQuisition And Real-Time Analysis

Hello DKat, My plan is to license the technology. I belive they would sell for maybe $10 to $15, but that is not up to me. I would pay $20, I love the plates, but you know, all inventors think their invention is great (I have seen coffee mugs at $ 19.95 and there are also expensive plates just because they are beautiful). How much would you pay for a plate like this?. Juan

DKat wrote:

I invite everybody to type "heat retentive plates" in GOOGLE. Take care Juan

Juan wrote: