Home > Shop All Brands > Techniche Temperature Control Products > KewlFlow Circulatory Cooling System > KewlFlow Circulatory Cooling Vest With BackpackThis complete set gives you all you need to keep cool even in the hottest conditions.  Help cool your core for up to 3 hours by having cold water from the 4 Liter backpack circulated around the vest.  It’s easy to use and easy to refill.  This system is ideal for anyone who needs cooling without the hindrance of being connected to a cooler. KewlFlow products use a combination of ice water and pumps to push cold water through special tubes built into vests. This allows for a continuous flow of cool water around the upper body, keeping the user cool and comfortable in any condition. The ice cooler or backpack that holds the ice and water can be easily refilled for continuous cooling over extended periods. Each vest, back pack or cooler comes with a detailed instruction guide. For best results, combine both water and ice in the container and turn on system to begin circulating the cool water.

100% Nylon Back Pack with integrated water reservoir, pump, and power source Padded shoulder straps with variable sizing adjustments Insulated tubing and manifolds enable maximal cooling Easy to use quick connectors allow for convenient operation Can operate with variable power sources (battery) Cooling Duration: Up to 3 hours Typical users include motorcyclists, welders, painters, and others requiring a portable cooling solution Includes: Vest, Backpack and Battery Pack KewlFlow Circulatory Cooling Vest With Backpack Item #:6429BPrice:Sale Price:Size:SMLXLXXLAvailability:Usually ships in 4-6 weeksQuantity:    QuantityPrice1 - 5$799.99 ea.6 - 23$749.99 ea.24 - 49$719.99 ea.50 - 99$679.99 ea.100+$639.99 ea. This complete set gives you all you need to keep cool even in the hottest conditions.  KewlFlow is a subsidurery of TechNiche International. They have grown to become one of the largest manufacturers of Cooling Vests in the world.  

Their products are distributed in over 50 countries worldwide with distribution centers in the US, Europe, Asia and the Middle East.Voltaic Systems makes some of the highest quality solar charging accessories on the market today. We’ve featured many of their gadgets in the past, from solar charging backpacks to iPad cases. Now they’ve launched a new line of products aimed at the DIY enthusiast: a selection of solar charging kits which allow users to design their own portable power systems. One size fits all is so 1990’s. Today’s consumers, even the conscious kind, want customization. The market has responded, giving us the ability to have everything, from cars to hamburgers, “our way”. While it may seem a little self-absorbed, there is some wisdom in building customization into today’s product designs. When people can customize, there’s less waste, and we come away more confident that our unique needs will be met. Voltaic’s newest products are designed to make it easier for people to create their own solar chargers based on their own power, cost and form factor requirements.

The new solar charging kits build on the path forged by Voltaic’s Fuse, a 10 W solar panel that comes with a strap system so it can be attached to any type of backpack. Especially convenient if you love your current backpack and don’t want to shell out $200+ for one with the panels already embedded.backpack upgrade stardew valleyEach DIY solar charging kit includes waterproof solar panels, connectors, and a universal battery. czech backpack epochKits range in size from 2 Watts of solar power for basic smartphone and small device charging, to 16 Watts for laptop, tablet and digital camera charging. qed backpackSingle panel kits can be connected directly to a Voltaic battery for power storage. dragon wyvern backpack

Those looking for more juice can build multi-panel kits but will need to use a circuit box (below) which includes two inputs for solar panels, an output for an LED wire (optional) and two power output cables.“We’ve discovered that one size doesn’t fit all. Our customers charge hundreds of different devices in wildly different conditions all over the world.” said Shayne McQuade, CEO of Voltaic Systems. “We created these solar charger kits so our customers can build solar systems tailored to their specific power, weight cost, and form factor requirements.” Small kits start at $25.Your next smartphone or electric vehicle might be powered by a nuclear battery instead of your usual lithium-ion cell thanks to a breakthrough made by University of Missouri researchers. This is bad news for those of you who think that WiFi signals are bad for your health — especially if they’re received by a smartphone situated near your head or gonads — but great news for all of the people who value all-day battery life ahead of increased radiation exposure.

The world could probably do with reduced fertility rates anyway, right?First, just to put your mind at rest: This nuclear battery doesn’t contain a mini nuclear fission reactor — that would be insane (at least given our current grasp of nuclear power generation, anyway). Instead, this battery, developed by Baek Kim and Jae Kwon at the University of Missouri, uses the betavoltaic process to generate electricity. A betavoltaic device, as the name implies, is fairly similar a photovoltaic device — but instead of generating electricity from photons, it generates electricity from beta radiation — i.e. high-energy electrons that are emitted by radioactive elements. A betavoltaic device is constructed in almost exactly the same way as a photovoltaic cell: a piece of silicon (or other semiconductor) is wedged between two electrodes, and when radiation hits the semiconductor it produces a flow of electrons (voltage, electricity). “But surely having a battery, and thus a mobile device, packed full of radioactive material is a bad idea” I hear you say.

And usually, yes, you’d be right. What makes a betavoltaic battery somewhat safe is that beta radiation can be easily stopped with a thin piece of aluminium; gamma radiation, on the other hand, has so much penetrative power that it can only be stopped by a big lump of lead (or other dense metal). This doesn’t mean that beta radiation in itself is safe — it can cause cancer and death — but it’s much easier to control. Just make sure the betavoltaic nuclear battery casing is more than a couple of millimeters thick — and don’t drop it. Ever.Anyway, back to the University of Missouri’s battery. Basically, Kim and Kwon’s nuclear battery consists of a platinum-coated titanium dioxide electrode, water, and a piece of radioactive strontium-90. Strontium-90 (Sr-90) radioactively decays with a half-life of 28.79 years, producing an electron (beta radiation), an anti-neutrino, and the isotope yttrium-90. Y-90 itself has a half-life of just 64 hours, decaying into more electrons, anti-neutrinos, and zirconium (which is stable).

The best thing about using strontium-90 as a fuel is that it produces almost no gamma radiation — so, as far as radioactive materials go, it’s pretty safe and easy to handle. (Still, there’s no avoiding the fact that it’s used extensively in medicine, both for radiotherapy of cancer, and as a radioactive tracer.)Read: We are slaves of electricity – and battery technologyWhile betavoltaic batteries are fairly old hat — they powered some of the earlier pacemakers, before more advanced chemistries such as lithium-ion arrived — the Missouri researchers say that their addition of water is a key breakthrough. Not only does water absorb a lot of the energy of the beta radiation (in high quantities it’s damaging to the betavoltaic semiconductor), but the beta radiation also splits the water molecules, producing free radicals and electricity.“Water acts as a buffer and surface plasmons created in the device turned out to be very useful in increasing its efficiency,” Kwon says.

“The ionic solution is not easily frozen at very low temperatures and could work in a wide variety of applications, including car batteries and, if packaged properly, perhaps spacecraft.” [Research paper: doi:10.1038/srep05249 – “Plasmon-assisted radiolytic energy conversion in aqueous solutions”]Ultimately, even if beta radiation can be quite easily contained, I doubt we’ll ever see commercial nuclear batteries. Those headlines about exploding lithium-ion batteries are already scary enough; I can’t imagine Apple or Samsung will ever open themselves up to even worse headlines/lawsuits. (“Smartphone owner dies from acute radiation sickness after dropping his phone”.) There’s also the distinct possibility of terrorists creating a dirty bomb from all of that strontium-90 (which itself isn’t cheap, incidentally). For now, nuclear batteries will probably only be used in military and space applications, where extreme longevity outweighs any risks. Still, it’s nice to dream of a smartphone or other mobile device that never once needs recharging…