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The shroud covering the Koolatron’s thermopile and fan motor had a stress crack around its mounting screw. The Coleman had a fist-sized dent in the lid. It was joined by the Igloo Kool Mate 32 (the same as last time), the Koolatron cooler from Canada (same as last time), and the Waeco-Adler/Barbour Tropicool Classic TC-32.Īmazingly, three of the four coolers arrived at our offices slightly damaged. This time we tried the Coleman Powerchill 40-quart model. In our ’96 test, the Coleman Thermo II cooler bested the other three units tried. We’ve included dimensions of the units we tested in the chart on page 18. So if you intend to use one on your boat, you’ll need to think carefully about where you’re going to put it and secure it, especially considering that you’ll need to plug it in to a cigarette lighter adaptor or wire it directly to a circuit breaker. Fourth, they’re stand-alone boxes, and big ones at that. It’s better to think of them as ice-preservers, not ice-makers. If it chillier than that, they can make ice, but very gradually. This means (obviously) that they won’t make ice if it’s warmer than 72 degrees out. Third, they generally cannot cool their innards lower than about 40 degrees below the ambient temperature. Second, they’re not very well insulated, simply because their makers expect that you’ll be supplying ample amounts of power to them. That’ll draw your house battery down fast if you’re not generating power to it. First, they’re quite power-hungry, most needing about 4.5 amps continuously. Of course there are drawbacks to thermoelectric coolers, too. Compare the prices in the accompanying chart to the cost of a new compressor-driven refrigeration system. In most cases you simply reverse the plug connection in order to warm the box.įinally, they’re cheap. It’s also lightweight and portable-a cooler with a thermopile and fan weighs only marginally more than an empty cooler, and of course everything except the power cord is contained in the box itself.īecause the Peltier Effect can work both ways, these coolers can also act as warmers. It’s simple, quiet, and has one moving part-the fan.
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A Peltier Effect cooler removes heat from its insulated space by driving an electric current through those dissimilar metal partnerships (called thermocouples) set up in a series (called a thermopile), and pulling the warmth away from the thermopile and outside the cooler with a fan. Peltier in 1834.)Īs PS readers know, from having read many an article about compressor-driven refrigeration, making an icebox work is not about adding cold air to the space, but by continually removing heat from it. (In a nutshell, when you send an electrical current through the joint between two dissimilar metals, heat will pass from one metal to the other.
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You can also buy the mini, portable personal fans from Havells online store, while comparing different models and prices.The last time we tested thermoelectric coolers, back in December of 1996, we spent a fair amount of space describing the history and science of the Peltier Effect, the process by which these coolers work. Given to the availability of online world, you can check all the models, features and prices of personal fans before buying, to choose the right one for your needs.
So, these portable, mini fans come as a respite to such small-space problems.
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In a country like India, availability of space in home or office is often a problem you might not have enough space to install a proper fan at every place. With cool color combinations and stylish designs, Havells mini fans offer a perfect air solution for your personal requirements. The newly designed range of small personal fans, Crescent and Breezo, can be used as both desk fan and wall fan.
Check online for the best features, including two-step speed control, unique multi-directional adjustment for desired wind flow, unique propeller, deep pitched blades, aerodynamically designed blades, and more! Whether it’s your home or office, these mini fans are absolutely compact which allows them to get fit in a small space. These small fans are absolutely versatile and portable, allowing you to utilize them wherever and whenever, you want to. Havells India Ltd, a leading brand in the world of electronics, offers a wide range of personal fans in different colors and designs, to make you feel cool anywhere. Looking online for high-speed personal fans for your small office, or probably for that mini counter in the kitchen? Great! You don’t need to browse further.
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