顯示具有 ozone 標籤的文章。 顯示所有文章
顯示具有 ozone 標籤的文章。 顯示所有文章

2008年5月14日 星期三

Dangers of ozone

What are the dangers of ozone?
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What is Ozone? Ozone occurs naturally in the stratosphere, and at relatively low concentrations. Ozone is the earths main defence against harmful UV rays emitted from the sun. At low concentrations, ozone is harmless, but at high concentrations it can cause problems in certain situations. Ozone is used in the cultivation of cannabis to destroy the tell-tale odors given off by the plants. Ozone is created in 'ozone generators' which can be bought at grow shops, and some household related shops. Car exhaust is the main producer of ozone at ground level. It's molecular structure is similar to that of oxygen, but the third oxygen atom is unstable, and readily detaches from the ozone molecule and 'attacks' any structure that will accept an oxygen atom. This can be harmful to some organic substances. It's not only organic substances that are affected by ozone. Nearly everything that gets in its way will be destroyed! It is highly corrosive, and can affect everything from metals to rubber. If this gas is so toxic that it corrodes metals and rubbers, just image what it does to your lungs!..

* Ozone is a colorless gas
* It is a naturally occurring gas
* It does not have an obvious odor (although some say it smells like fresh rain, or purified air)
* Ozone is a toxic gas

How does it affect me, and what are some symptoms of over-exposure to ozone?

Short exposures of relatively high amounts of ozone (found in some grow rooms) can cause problems such as:

* Pains in the chest
* Throat irritation
* Coughing
* Shortness of breath

Although short exposures to ozone may cause problems, these should clear up over time. Prolonged exposure to high concentrations of ozone can cause severe damage to the lungs and other parts of the respiratory system, and over time may have irreversible effects. The more ozone a person inhales, the more damage is done to their system, and the less chance there is of recovery. People with asthma are advised to avoid prolonged exposure to ozone, as it may cause an 'asthma attack' or flare up problems with their respiratory system. As an example to the severity of ozone 'poisoning', the New York State Ozone Advisory will issue a warning to people if the level of ozone is above 0.08 ppm for more than 8 hours at a time. 0.15 ppm is intolerable for even short periods.

What can I do to prevent over-exposure?

You're ozone generator should not pumping ozone directly into the room. If you are using an ozone generator, us it in conjunction with your ventilation system. This way, no concentrated amounts of ozone are present in the grow room, but instead having all the ozone flow in the exhaust tubing to clean the air as it leaves the grow room. (snoofer) Put your ozone generator inside your exhaust ducting - most generators are round tubes with 4/6/8" diameters, designed to work inline with your grow room air exhaust system. Some generators have a control that regulates the output levels (The generator functions at 100% output, but this rheostat cycles the on/off cycles, much like a microwave). This method is the safest and most effective way to use your ozone generator, but for added advantages, if you divert some ozone back into the grow room it will help kill airborne substances such as spores, moulds, etc to help keep your grow sterile and clean. If your generator is pumping ozone directly into your grow room you will need to have a strong ventilation system to help keep the levels of ozone from building up to dangerous levels. Having the exhaust air vented outside is the best solution. Avoid spending excess amounts of time in your grow area if you are using an ozone generator. Concentrations (according to various controlling bodies) should not exceed concentrations of 0.10 ppm for more than a few hours at a time. It is also understood that these concentrations and below are not suitable for controlling odors. This means that if your grow room has an odor problem, and you are using an ozone generator, it is highly likely that you are exposing yourself to harmful levels of ozone. If you run your ozone generator on HIGH in a relatively unventilated area, you can easily reach levels of 1ppm, which is 10 times higher than the maximum recommended level.

Ozone alternatives

In general, DO NOT USE AN OZONE GENERATOR UNLESS THERE IS ABSOLUTELY NO OTHER SOLUTION TO YOUR ODOR PROBLEM! Do not think of an ozone generator as an easy way to control odors, because you could be putting your own personal health at risk! Cheaper types of ozone generators may use crappy materials in their design, which can cause more problems. The corona discharge method is particularly bad, as the cheap alloys used can give of dangerous oxides. The smell from this may have a 'metallic' scent to it, so keep that in mind when purchasing an ozone generator (or making one, which is not recommended). As a rule, the materials used in an ozone generator should be as unreactive as possible, such as steel, gold and silver. There are some alternatives to ozone as an odor controller, the main one being the 'UV ionizer' and the 'carbon scrubber' which uses activated carbon to remove odors. These options may not be as effective as ozone in some situations.

2008年4月30日 星期三

Ozonators

How do I control odor with ozonators?
如何用臭氧產生器控制氣味(臭味)##CONTINUE##

Ozonators can make the smell of even SMELLY strains like Mikado and Romulan practically unnoticeable, unless resin glands are broken by your movements within the grow area. Place the ozonator units in the exhaust line or area or within the grow area itself, above an air circulation or intake/exhaust duct or fan. Purchase a timer to run continuously, except for 30 minutes before and during your scheduled maintenance times. Ozone has a half life of 30 minutes.
臭氧產生器可以讓以氣味重聞名的品種像是Mikado和Romulan等的臭味幾乎不被察覺, 除非是你在生長區內的動作太大把分泌大麻酯的腺體弄破了(會道會更重更難消除)
在抽風管線內或抽風扇附近或直接在種植區裡的空氣環境路線或進出風口的風扇上方放置一台臭氧產生器
買一個計時器來讓臭氧產生器持續地運作, 除了有人要進入種植區前的30分鐘和有人在裡面做事的期間, 因為臭氧的半衰期為30分鐘

You may notice a hospital type smell, if ozone levels get higher. Nothing dangerous, but reduced by the use of a timer in the aforementioned fashion. For true stealth, additional ozonators placed in the exhaust line or outside the grow area will take care of any escaping terpenes that have not been oxidized within the garden itself.
如果種植區室內臭氧濃度過高, 你會聞到一股像醫院一樣的味道, 沒什麼危險而且前述的計時器設定會降低它的濃度
要達到真正的隱密, 多加幾個臭氧產生器在出風口或在種植區外可以把少量沒被種植區內的臭氧產生器消臭的少少氣味處理掉

Larger output inline corona ozonators are preferable for larger vented areas. There are many different sizes for different space requirements, buy the rappropriate size for your area! Air Tiger up to 5000 cubic feet Uvonair Junior up to 1000 cubic feet Uvonair(standard) up to 3000 cubic feet Uvonair Plus up to 5000 cubic feet They use UV light to produce ozone and require simple monthly cleaning to keep them in top working condition.They are designed to be safe commercial, office and residential use. They come with an ozone detection card to verify maximum ozone levels and your safety.
上面這段介紹的是國外的幾個大型臭氧產生器和它們能處理的空間大小有興趣的自己翻吧

UV type ozonator maintenance
紫外線類的臭氧產生器的保養

The UV bulb gets coated with dust, which reduces the amount of light emitted and therefore the amount of ozone produced. The bulb should be cleaned at least monthly to maintain peak performance. If you have never cleaned your bulb, you are diminishing the unit's effectiveness and will be surprised with the improvement in odor control afterwards.
紫外線燈管被灰塵所覆蓋會減少紫外光的產生, 也會因此而影響到臭氧的生產量
燈管最少要每個月清理以維持極致效能
如果你從未清理燈管表示你在拉低機效的效率而且將會被清理過後對氣味控制的效能改善

Nietzsche Notes A note about UV Ozone Generators If you must treat the air inside the grow room due to room leaks/smell seepage it is preferable to use a UV ozone generator. UV ozonators using a frequency of 185nm (approx) do not produce nitric acid as a by-product like corona discharge ozonators do. Thus corona discharge ozone generators should only be used in the exhaust system. If using a UV ozone generator to treat the air inside the room this could damage your plants if the concentration is too high. I also suggest putting it in the air intake so to allow some time for the Ozone to mix with the air and also not to creat a hot spot right next to the ozone machine.
如果要像處理流出去的氣味一樣地處理種植區內的空氣, 最好是用紫外線類型的臭氧產生器
紫外線臭氧產生器是用大約185mn的頻率不會像電暈放電臭氧產生器一樣產生硝酸
所以電暉放電臭氧產生器只能用在抽風系統
如果在種植區內使用紫外線臭氧產生器而造成臭氧濃度過高的話會傷害大麻
同時建議把種植區內用的臭氧產生器放置在進風口或進風風扇附近
讓產生出的臭氧有時間和室內空氣混合而不致於造成產生器附近的濃度過高形成臭氣熱點

以下是截至網路相關的說明文章

何謂臭氧臭氧層是分佈在離地面20~30km的大氣層中,它最大的功能是吸收紫外線,保護曝露在紫外線照射下的人類與動植物。空氣中的臭氧量為 0.01~0.04ppm,因臭氧具有極強淨化殺菌之作用,使得自然界中的細菌黴菌,無法異常繁殖因而保持平衡狀態.。臭氧分解速度會因熱、光、水份、PH值而不同,也會因金屬氧化物與其他觸媒等作用,而加快分解速度。當活躍的菌碰上臭氧時,臭氧的致死濃度會使它立刻失去活力,臭氧在分解的時候產生的自由基過程,是一連串的反應動作,一個反應產物又可接連另一個反應產物,且不一定有固定的反應式相當複雜。
(1)臭氧在大氣中(常溫)之半衰期為三十分鐘,會隨溫度不同而有所改變。 臭氧在空氣中的安全濃度 FDA規範室內醫療設備臭氧輸出濃度不得高於0.05 ppm。OSHA 規定勞工在作業場所8小時所暴露的平均臭氧濃度不可高於0.10 ppm。NIOSH建議臭氧的濃度在任何時候都不應超過0.10 ppm。環保署 (EPA)之週界空氣品質國家標準規定戶外臭氧8小時的平均濃度最大為0.08 ppm。
(2)臭氧在水中之半衰期為二十分鍾,當水中PH值高時分解速度變快,PH值低時較緩慢。
(3)臭氧溶解於水中會因受水分子作用,急速分解具有極強氧化力,殺菌、脫臭、漂白等作用。
(4)臭氧水中分解前,或分解後都能與附著物發生反應。
(5)臭氧分解反應後,最重要的分離產物是氫氧離子﹝HO-﹞。
(6)氫氧離子的氧化能量為-2.8V,氧化能力比臭氧本身氧化能量還高。
(7)臭氧在酸性溶液中有-2.7V,在鹼性溶液中有-1.24V。
(8)臭氧與有害物質分解後,會還原成氧氣,不會再造成二次公害。

水能載舟 亦能覆舟 使用時請於通風處 勿在密閉空間使用