7/02/2008
6/30/2008
How far negative ions travel
How far negative ions travel Cool wind does not reach you! You want to enjoy cool air as it is extremely hot, but the cool air created by your air conditioner does not reach you. It is just wasting electricity. The same goes with negative ion generators. If negative ions do not reach you, the generator is wasting electricity. Some negative ion generators generate negative ions but only very few reach you. Pay attention to the distance from the negative ion generator! Negative ion counts are generally measured in (pcs/cc). You cannot evaluate performance of negative ion generators with this value only. For example, a negative ion generator which generates 1,000,000 (pcs/cc) can be good or not so good. This is because the distance from the generator where this amount of negative ions can be detected is not shown. Negative ion counts dramatically decrease as you go further away from the generator. There are products which emphasize the ion count detected at the blow off point while very few can be detected at 50cm away. This is why you need to pay attention to the distance. The ion count at a distance away from the generator determines the performance of the generator. Ion count in the blow off direction The ion count detected at a certain distance away from the ion generator shows you how far negative ions travel. You need to pay attention to the ion count at least in the blow off direction because most manufacturers do not provide ion count information in angled directions. It would be ideal if negative ion counts in the both directions were always available. If the ion count at 1m away from the ion generator is below 10,000 (pcs/cc), the performance is not so good. Ion count: Performance (for your reference) 300 (pcs/cc) at 50cm: Poor
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How widely negative ions spread out
How widely negative ions spread out Not always in the blow-off direction As we mentioned in "How far negative ions travel", negative ion counts dramatically decrease as you go further away. The same goes with angled directions. It is possible that almost no negative ion molecule can be detected in the 30 degree direction. If you have such an ion generator, you always have to stay in the blow off direction in order to enjoy negative ions. While cool air created by your air conditioner spreads throughout the room as time passes and temperature goes down, ion counts do not dramatically increase as time passes because negative ions vanish quickly. This is why negative ions need to spread in every direction. Make sure negative ions spread in every direction As mentioned above, a negative ion generator, which disperses negative ions to the blow off direction only, is not good for practical use. However, many models fail to perform this task because of technical difficulties. This is why you have to make sure that negative ions spread in every direction because you are not always in front of the generator. How to make sure Here is how to make sure that negative ions spread in every direction. Coverage areaIt is ideal to see how negative ions spread with the actual ion counts.
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Performance is important
Pay attention to specifications Appearance vs Performance A negative ion generator which looks nice, powerful or is recommended by Professor xxxxx does not always perform well. The performance is more important. Pay attention to the performance! Appearance is important as your negative ion generator stays in your room but you have to pay more attention to the performance. As we mentioned in "How far negative ions travel" and "How widely negative ions spread out", the negative ion distribution data is very important as it shows the ion counts at certain distances/directions. If you can only find the negative ion count detected at the blow off point or at an unknown distance, you should contact the manufacturer for more information. Otherwise, you may end up with a quasi-ion generator.
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Pay attention to specifications
Pay attention to specifications The more information the better Some manufacturers provide detailed specifications, while others do not. Here are the specification items required to evaluate performance of negative ion generators. Click on the item for more information
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Negative ion count (blow off direction)
Negative ion count (blow off direction) Negative ion count (blow off direction) - (Extract from "Pay attention to specifications")
Ion counts show you "How far negative ions travel". You cannot evaluate performance of negative ion generators without negative ion count information. It is possible that some million negative ion molecules are detected at the blow off point but very few can be detected at 50/100/200cm away. If only less than 2,000-3,000 (pcs/cc at 1m) negative ions can be detected, the performance of the ion generator is not good and it is only good for mobile or other special use. Not only ion counts in the blow off direction but also those in angled directions (found on the next page) are an important factor.
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Negative ion count (angled directions)
Negative ion count (angled directions) Negative ion count (angled directions) - (Extract from "Pay attention to specifications")
Ion counts in angled directions show you "How widely negative ions spread out". Ion count info in angled directions is a very important factor to choose the right negative ion generator but very few manufacturers disclose it. If very few negative ions can be detected in angled directions, the ion generator is just wasting electricity. We suggest you should pay attention on how widely negative ions spread out.
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