Ozone generators - Page 1
Forum section: electronics / general

author: cs.dk
author_rank: Unknown
timestamp: June 03, 2017, 08:41:19 am
content: I'm looking for a ozone generator. It will primarily be used for car AC systems. I borrow a professional one sometimes that makes 10 g/h - But it's very pricey (~7500 USD).I'll rather have my own. Just the cost, if i'm dropping it, it gets stolen, or what ever.I know some ozone generators wear over time. What exactly does wear in them? Are the pricey to maintain?Any experience with something like this?http://www.ebay.co.uk/itm/PRO-Commercial-Ozone-Generator-10000mg-10g-Ozonizer-Air-Purifier-Sterilizer-/190787629617?hash=item2c6bd43231:g:C78AAOSw7hRWO1U-http://bastionshop.eu/en/glowna/34-ozongenerator-ioniesator-16g-oder-24g-ozongerat-air-source-air-purifier.html

author: ralphrmartin
author_rank: Frequent Contributor
timestamp: June 03, 2017, 06:37:12 pm
content: You do know that ozone is seriously toxic, I take it? Free radicals and all that...Perhaps I misunderstood - you mean you will use it to sterilise car a/c systems, not as a component of one...

author: cs.dk
author_rank: Unknown
timestamp: June 03, 2017, 07:35:32 pm
content: Quote from: ralphrmartin on June 03, 2017, 06:37:12 pmYes,I know the danger of ozone - I'm a welder by education.I've had great success with the unit i can borrow. Wet dog smell, cigarettes, etc. - Vacuum the car, and clean the dashboard, seats, etc. Put the unit in the car, let it run for ~1 hour with the cabin fan at max, and recirculation on. After that, open all doors for half an hour, and the car smells like new inside.

author: cs.dk
author_rank: Unknown
timestamp: June 03, 2017, 07:44:38 pm
content: Quote from: evb149 on June 03, 2017, 06:52:03 pmI know UV light produces ozone - But they are quite expensive here in Europe.They also have to be screened, so no one gets hurt.I made these for a fish farm - The UV tubes are 130W, they can and will cause arc eyes (photokeratitis) in a minute.The problem is, they are very expensive, fragile, and to create a housing for them, it's not the way to go i think.

author: MadTux
author_rank: Frequent Contributor
timestamp: June 03, 2017, 08:31:28 pm
content: You might want to use low pressure Hg vapor lamps, used to kill bacteria in pools. Some people and me use them to cheaply erase EPROMs. They generate lots of UV light at 254nm, which seems to be enough energy per photon do break down oxygen into ozone.http://www.ebay.de/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313.TR12.TRC2.A0.H0.Xuvc+lampe.TRS0&_nkw=uvc+lampe&_sacat=0

author: tronde
author_rank: Frequent Contributor
timestamp: June 04, 2017, 03:28:01 am
content: I guess the ozone generators used in cars are based on the ceramic types. Most of them are made to the corner cutting Chinese safety standards, so some careful re-work is most likely needed.https://www.banggood.com/220V-Ozone-Generator-10g-Double-Ceramic-Plate-Integrated-Sterilizer-Air-Ozonizer-p-1090728.html?rmmds=searchYou will need UVC-tubes (less than 200nm) to convert oxygen into ozone, and as you say, the are not toys.Ozone is extremely aggressive to most plastics and many electrical contacts, so they will wear out. I have worked with both UVC and high intensity xenon lamps, and both suffer from problems caused by ozone.

author: james_s
author_rank: Super Contributor
timestamp: June 04, 2017, 04:18:35 am
content: I have one I built from one of those cheap Chinese kits. It consists of a couple of ceramic corona plates and a little HV power supply, it works pretty well.

author: David Hess
author_rank: Super Contributor
timestamp: June 04, 2017, 02:41:40 pm
content: The UV needed for EPROM erasers produces ozone so that is one source for the bulbs and complete units.

author: MagicSmoker
author_rank: Super Contributor
timestamp: June 04, 2017, 05:51:47 pm
content: As I understand it, high frequency AC coronal discharge is the most effective method of producing ozone; UV fluorescent lamps with a quartz bulb are a distant second place.Usually the coronal discharge occurs between two plates which have a thin dielectric coating so act like a lossy capacitor; anodized aluminum could probably be used for the electrodes in a pinch, but it is unlikely to stand up to long periods of use (ozone is very strong oxidizer, second only to fluorine).

author: tronde
author_rank: Frequent Contributor
timestamp: June 04, 2017, 06:31:14 pm
content: Quote from: MagicSmoker on June 04, 2017, 05:51:47 pmYes. Ozone is normally considered an unwanted side effect of the UV light.

author: cdev
author_rank: Super Contributor
timestamp: June 04, 2017, 10:14:08 pm
content: Watch out for mold in air conditioners. Also watch out for ozone killing mold and then large amounts of fungal toxins from that just killed mold suddenly entering environments people live in. Thats definitely what happens when ozone is used in a building setting to kill existing mold.

author: langwadt
author_rank: Super Contributor
timestamp: June 04, 2017, 10:42:40 pm
content: http://www.bigclive.com/ozone.htm