Dell's newest AD211 Bluetooth speaker
Bluetooth speakers are quite common, but everyone is picking the ones they are most satisfied with. They are able to better collaborate with their own devices. Now that Dell has introduced a Bluetooth speaker, the AD211 can work well with your computer. It's also easy to carry, but also at a reasonable price, although it doesn't present much to you with other Bluetooth speakers, they are usually tubular shapes, speaker grilles, and cleverly controlled in an easy-to-find location.
The AD211 is no different in this regard. A group of round designs about six inches, with a USB port, there is a wired input, it can also last 10 hours of playback time, and its pairing is as simple as it can connect with Android and iOS devices, in the range of the device The Bluetooth device can be used inside.
Counter Current Cooling Tower has higher efficiency of the same volume, and offers larger water temperature difference. But it also comes with several disadvantages:
1.The unequal height between the air inlet and the water eliminator makes up the big Counter Current Cooling Tower and its high power consumption.
2.Meanwhile, the tower adopts nozzles to distribute water, which needs high pressure requirements and are easy to be blocked.
3.The entire tower body of the countercurrent tower is a closed structure, and it must be shut down when the equipment is overhauled or routinely maintained.
4.In addition, the rapid loss of water in the lower tank is very large, and it is easy to form water mist around the cooling tower, which is easy to cause the reproduction of legionary bacteria.
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