3 Solar Ovens That Give You the Power to Cook With the Sun
With barbecue season around the corner, what could be more planet-friendly than cooking with the sun? Instead of gas/electricity/charcoal/wood, a solar cooker harnesses heat from the sun to cook food.
From baking cookies to frying eggs, these pollution-free devices work wherever there is sunshine, regardless of how cold it is outside. With ample sunlight, most get into temperatures between 250-350 degrees Fahrenheit, with some top end varieties going nearly 600 degrees.
Solar cookers come in all shapes, sizes and price ranges and you can even DIY. Here are instructions for solar box cookers, parabolic cookers and panel cookers. And here's a kid-friendly version from NASA that basically requires a cardboard box, plastic wrap, aluminum foil and regular office supplies.
For those of you who are less handy, check out some of our favorites you can buy online.
Solar cookers are ideal for people who enjoy camping outdoors or live off-grid, but for people in energy-impoverished nations, they can be a lifesaver when fuel is limited or if water needs purification. Developed for use in refugee camps in 1995, the $39.00 CooKit panel cooker is made of cardboard and aluminum foil and is the most widely-used solar cooker in the world. The CooKit is incredibly portable as it folds flat into a 13-by-13 inch square that's 2 inches thick. Cooking temperature range is 180-240 degrees Fahrenheit.
As Insights writer Eric Hoffner pointed out, "lack of access to such clean cooking options is a huge issue globally: 3 billion people cook their daily meals over smoky biomass fires every day causing more than 4 million annual mortalities, mostly women and children, from smoke inhalation related diseases. Not only is it a human health issue, but forests and the climate suffer: most households that rely on smoky stoves burn 2 tons of biomass per year, about 730 million tons globally, which releases about a billion tons of carbon dioxide. The resulting particulate matter also traps heat in the atmosphere."
Food gets “steam-fried” inside this unique, tubed-shaped solar cooker making it ideal for vegetables and meats and even baking bread. A GoSun was one of the solar-powered stoves featured on a December episode of Bravo’s hit reality cooking competition Top Chef. Host Padma Lakshmi gave the contestants 30 minutes to create a dish with “the cleanest energy there is—the sun.”
TONIGHT: @BravoTopChef @ChefJoseAndres Challenges Contestants to Cook With #Solar Stoves https://t.co/KfilP7Iwk2 https://t.co/VP54ik11nN— EcoWatch (@EcoWatch)1450369413.0
GoSun social designer Matt Gillespie told EcoWatch last year that the GoSun Grill can roast a meal for eight as fast as a grill. And since it has a thermal battery, users can cook whenever they want to, even if it’s cloudy. The company sells different iterations of stoves online, such as the 7 lbs. GoSun Sport and the industrial sized GoSun Station. The products can reach temperatures of 550 degrees Fahrenheit and can cook a meal in 20 minutes, depending on what’s being cooked and the amount of sunlight.
In the video below, a YouTuber shows how she cooked a batch of moist brownies with the oven.
Think of the Solavore Sport as a crockpot within an oven. Here's how it works: Sunlight enters through the transparent cover and hits internal cooking pots that transform light into heat. Heat builds inside the longer it sits while the exterior of the box remains cool to the touch.
TreeHugger's Derek Markham recently reviewed the unit and said that the 9-pound cooker is "light and portable, and a convenient addition to home cooking."
The Sport can roast, bake, steam using only solar energy. "Using the natural moisture in meats, fish, and vegetables, the Sport cooks without additional water so all the natural vitamins and minerals are retained, giving food a wonderful rich flavor," the company says.
"Using something as simple and elegant as a black box with a lens on top, putting your pots inside and knowing that all day the sun's going to be making that dinner," Solavore CEO Anne Patterson says in the video. "There's something just beautiful about that simplicity."
The company is even paying it forward with each purchase. Every solar oven that's purchased helps fund a Solavore Sport somewhere in the world where an open fire is still the main kitchen appliance.
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EcoWatch Daily Newsletter
Jean-Marc Neveu and Olivier Civil never expected to find themselves battling against disposable mask pollution.
When they founded their recycling start-up Plaxtil in 2017, it was textile waste they set their sights on. The project developed a process that turned fabrics into a new recyclable material they describe as "ecological plastic."
Mounting Piles of Waste<p>It is not only the streets of Chatellerault where pandemic pollution is piling-up, but also the world's beaches and oceans. Once there, they can take up to 450 years to degrade and disappear.</p><p>Esther Röling, co-organizer of the annual Adventure Clean Up Challenge held on Hong Kong Island, has seen this waste firsthand. In October the sports challenge pitted teams against one another in a competition to remove trash from 13 hard-to-reach coastal areas around the city.</p><p>They find tons of both disposable and reusable masks, said Röling. "You wonder how it ended up there. Was it just thrown on the ground? Or was it in a garbage bag that broke open?"</p><p>Almost 10,000 kilometers away in Antibes on the sunny French Riviera, it's a similar picture. For the past few months, divers and clean-up volunteers working with an ocean clean-up non-profit called Operation Mer Propre have been collecting an increasing number of masks found on land and in the sea.</p><p>"Since the beginning of the lockdown when we started to count, we've reached 800, 900, [and now in total] 1000 masks," said co-founder Joko Peltier. </p><p>According to <a href="https://unctad.org/news/growing-plastic-pollution-wake-covid-19-how-trade-policy-can-help" target="_blank">UN estimates</a>, up to 75% of all coronavirus-related plastic could end up as waste in oceans and landfills.</p>
The Limits of Recycling<p>Yet not all are convinced the recycling of this waste is possible on a global scale. </p><p>"What those citizen groups are doing is really beneficial but once they collect it, it should just go to a landfill or an incinerator. They shouldn't necessarily expect it to get recycled," said Jonathan Krones, an industrial ecologist and visiting assistant professor of environmental studies at Boston College.</p><p>That's because mask recycling programs like Plaxtil are few and far between and most don't have the benefit of a readily adaptable production process. </p><p>Even in countries with solid recycling infrastructure, he says, the system is designed to separate out specific types of waste like bottles or cardboard.</p><p>"I imagine that it would be technically feasible to develop a separation process to filter out masks, but there simply aren't enough of them to make that economical," he said.</p><p>Collection is a big hurdle, he adds. Since each mask only weighs a fraction of a gram and they're scattered on roads or mixed with other trash, it is difficult and costly. </p><p>"You need a lot of raw material of the right quality to make investing in the recycling technology and the recycling system worthwhile," he said.<span></span><br></p>
Hemp, Sugar Cane and Sustainable Alternatives<p>Some projects are instead addressing the material used to make masks.</p><p>French company Geochanvre have created a mask made primarily from hemp, while in Australia, researchers at the Queensland University of Technology are experimenting with a disposable product made from agricultural waste. </p><p>Biodegradable options are exciting alternatives to reduce the fossil fuels needed for the creation of plastic-based masks, said Krones, but they don't absolve the wearer from the responsibility of what happens afterwards. </p><p>Bio-based masks often need their own composing solutions, he explains, because in landfill they can produce high amounts of the greenhouse gas methane when anaerobic bacteria feeds on the organic material. Methane is known to be significantly more potent than carbon dioxide.</p><p>"I think as long as we have in our mind that we want to have disposability, we're going to have to wrestle with a variety of different sorts of environmental tradeoffs," he said, adding that reusable, fabric masks are the best option available to most people.</p><p>Precimask is developing a clear face covering with an optional visor made from hard plastic, designed to be long-lasting.<br></p><p>Air enters either side of the cheeks through a technology normally found in pool filters and car exhaust systems, said company spokeswoman Juliette Chambet.</p><p>"We wanted to make ceramic-based filters that would be washable and cleanable, which would allow them to be reused as many times as desired without having to buy a new consumable or produce waste," she said. </p><p>Ultimately, encouraging mask wearers to think about the entire lifecycle of a mask is key, explains Neveu. </p><p>"We want people who put on the masks to realize that they are also responsible for the waste, he said. "It's not inevitable that this [pandemic] will become an environmental catastrophe.</p><p><em>Reposted with permission from </em><em><a href="https://www.dw.com/en/covid-19-recycling-pollution-trash-pandemic/a-55707817" target="_blank">Deutsche Welle</a>.</em><a href="https://www.ecowatch.com/r/entryeditor/2649032193#/" target="_self"></a></p>
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