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I ordered one.
Permaculture is a gestalt ... a study of the whole. Not just how to produce more and better food, but how human life on the planet affects and is affected by the surrounding environment.
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Bill Kearns wrote:
I ordered one.
Did you order with the thermal battery???
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Matthew Nistico wrote:@Len - Read through the KickStarter and gosunstove.com materials more closely. They say it is an organic wax, though they don't name the actual compound, and that its melting point is a little over 300 degrees.
Len Ovens wrote:
Matthew Nistico wrote:@Len - Read through the KickStarter and gosunstove.com materials more closely. They say it is an organic wax, though they don't name the actual compound, and that its melting point is a little over 300 degrees.
Sounds good. I was hoping it was not toxic (sulfer is in around that range somewhere). I wonder how many cycles it is good for. It would break down through cycles and the phase change temperature will probably drop over time (I would guess).
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Terry Ruth wrote:Len/Matthew,
As I read the thread some red flags were raised in my mind since I have conducted many test like these….I don’t have the time to research the site but here are some concerns based on thread content.
Thermal Battery: Is it Safe?
“Thermal Battery is hermetically sealed”
Definition: “A hermetic seal has the quality of being airtight. In common usage, the term often implies being impervious to gases. When used technically, it is stated in conjunction with a specific test method and conditions of usage."
"Using the latent-heat capacity of our proprietary PCM (short for Phase Change Material) encapsulated within an aluminum extrusion, the Thermal Battery is able to store much more energy than a material with only sensible heat (such as concrete or sand). Through the process of melting the PCM at roughly 310°F or 155°C,”
Just about every time I have researched “proprietary” materials I find issues or nothing new. I get really concerned about this term in building products, and VERY concerned when it is in “direct contact” with food (separated by “aluminum”). It is not
Len Ovens wrote:I do not think any one is expected to cook food directly on the "battery" but rather in a pan on top. but the point of gasious/particulate emisions is valid.
Len Ovens wrote:Another thing for the user to be aware of, is that cooking in the dark using the battery will be different than cooking in the sun. The page does mention the "good" conduction from battry to pan to food by contact... this may not be the good thing it seems, 310F is hot enough to burn things on the bottom.
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Matthew Nistico wrote:
Still, I am guessing that the pros outweigh the cons and am still looking forward to receiving my cooker with battery.
"You must be the change you want to see in the world." "First they ignore you, then they laugh at you, then they fight you, then you win." --Mahatma Gandhi
"Preach the Gospel always, and if necessary, use words." --Francis of Assisi.
"Family farms work when the whole family works the farm." -- Adam Klaus
Len Ovens wrote:What I would find interesting is to use the "battery" in other ways than intended
...Or maybe in the winter to use as a space heater for a small room that is unable to gather heat from the sun.
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Matthew Nistico wrote: At first, when relying on a wood stove (in the main room) for heat, I can always sit a metal bucket full of rocks atop the stove for bedtime transport into the back bedroom to boost nighttime temps.
Paramount Natural Design-Build Architect, Engineering Services, GC, LLC.
Nicole Alderman wrote:This is rather off topic, but I just wanted to say: Thank you so much for this idea! We have a woodstove, and I've been trying to think of affordable ways to add more mass to it. We already have soapstone on top of the stove that was gifted to us, but I wanted to add more mass. Our rocks don't stack here, and stacking soapstone next to it would be expensive. But, a nice metal bucket of rocks is cheap and easy. Thank you!
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Terry Ruth wrote:Red flags also raise in my mind when the advertising to get you buy one involves support to third world poverty stricken countries. I'd like to see what percentage of profits are going to them.
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Matthew Nistico wrote:
Terry Ruth wrote:Red flags also raise in my mind when the advertising to get you buy one involves support to third world poverty stricken countries. I'd like to see what percentage of profits are going to them.
Although you raise an excellent point about emotionally manipulative marketing in general, I think you may have misunderstood GoSun's marketing in this case.
Now, don't take this as definitive in any way, because I don't wish to speak on these people's behalf, but my take from the info in the kickstarter video was quite different. I don't think they are promising to make charitable donations to Guatemalan poor if you buy their stoves. Rather, I understood them to be saying that they developed their stoves with the idea in mind to market this technology - or I am guessing a less expensive derivative of this technology, since their site claims the ability to manufacture and deliver one stove to an impoverished country for $100 - to Guatemalan poor as a better alternative to the open wood fires currently in use to cook food. Certainly this is a huge problem throughout the developing world, leading to 1) continued poverty, based on the excessive time and/or money consumed just gathering fuel; 2) resource depletion through unnecessary deforestation; and most of all 3) serious health problems, based on a lifetime spent breathing smoke from open fires. Recall that these are the same three problems that originally inspired invention of rocket stoves.
I agree, there is precious little hard info offered on their website. Perhaps a deeper online search could turn up more. But they do say (at http://gosunstove.com/pages/about-us) that "GoSun’s business model has two distinct initiatives: GoSun Stove and GoSun Global, with different strategies, product offerings and markets that share the same basic technology. GoSun Global is a social enterprise leveraging business and impact investing as a mechanism to perform good in the developing world." And about the latter, they offer a little more info at http://gosunstove.com/pages/empowerment, including a summary of the results of their pilot study in Central America.
Paramount Natural Design-Build Architect, Engineering Services, GC, LLC.
Best luck: satisfaction
Greatest curse, greed
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