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Author Topic: Xenon bulb heater Markus Lemm Expert Film Handler Posts: 113 From: Ottawa, Ontario, Canada Registered: Nov 2005 posted 12-07-2005 01:24 AM                        Anyone know if it is possible to use a lamphouse to heat the booth or the theatre. I was told that it is no longer an issue with bulbs emitting dangerous gases (Ozone) when operating. So I wonder if, since I work in Canada and it is very cold in the booth, that I could add a fan to the top of the lamphouse and pump the heat into the booth or the theatre instead of just venting it outside. Has anyone done this?  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 12-07-2005 05:40 AM                        Some codes may still prohibit it. With some lamps, even the little bit of ozone generated by the lamp and the high voltage ignition could be hazardous to your health. Ozone can be generated by intense ultraviolet energy ("ozone-free" lamps have envelopes doped with a material that filters out most of that UV) and high voltage discharge. For sure, if you ever smell the pungent smell of ozone, you should vent it. Consider using a simple heat exchanger (e.g., fins on the vent pipe) to get more heat from the lamp exhaust.  |  IP: Logged Marin Zorica Jedi Master Film Handler Posts: 671 From: Biograd na Moru, Croatia Registered: May 2003 posted 12-07-2005 07:25 AM                     Interesting! Why don't ve construct lamp house what would heat booth! Consider plex booth with 5-10 machines with 4000-7000 KW bulbs, what a HEAT! I know stories from older projectionist and carbon arc time, if you get cold tea, open lamp house and put tea to worm it up! Or you can dry jackets near the lamphouse!  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 12-07-2005 07:27 AM                        quote: I know stories from older projectionist and carbon arc time, if you get cold tea, open lamp house and put tea to worm it up! There were some hazardous things in the ash and exhaust of carbon arc lamps.  |  IP: Logged Daryl C. W. O'Shea Film God Posts: 3977 From: Midland Ontario Canada (where Panavision & IMAX lenses come from) Registered: Jun 2002 posted 12-07-2005 10:00 AM                        Well I sure as heck can't pass up an opportunity to tease Rick. How do you think canned beans would cook in a lamp house?  |  IP: Logged Jack Ondracek Film God Posts: 2348 From: Port Orchard, WA, USA Registered: Oct 2002 posted 12-07-2005 10:50 AM                        Better have a can of Bon Ami on hand to clean up that reflector! Those arc lamps sure made good cigarette lighters, though... under the excuse of "testing the trim", of course.  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 12-07-2005 01:09 PM                     Yep, use a razor blade (single edge) to scrape off the copper "spits" from the surface of the mirror, then a good ol' scrubbing with BonAmi to clean and polish the mirror. Yes, I remember those early xenon bulbs with that nasty ozone smell that would come from the exhaust - worked in a dumpy little theatre that had switched from carbon to xenon and he didn't vent the lamphouses due to that they were small lamphouses and that odor was pretty pungent up in that small booth. Luckilly, I wasn't working then when he did switch over - I was not needed anymore.  |  IP: Logged Jon Miller Jedi Master Film Handler Posts: 973 From: San Diego, CA, USA Registered: Sep 1999 posted 12-07-2005 07:35 PM                     quote: Daryl C. W. O'Shea How do you think canned beans would cook in a lamp house? Probably very well, but be sure to puncture vent holes in the can. It may be just a projectionist's urban legend, but as I mentioned in page 2 of this vintage thread, someone messed up a Magnarc pretty bad by not venting the can.  |  IP: Logged Marc Hansen Film Handler Posts: 93 From: Seattle, WA, USA Registered: Dec 2000 posted 12-07-2005 11:05 PM                     This should do the job  |  IP: Logged Markus Lemm Expert Film Handler Posts: 113 From: Ottawa, Ontario, Canada Registered: Nov 2005 posted 12-07-2005 11:54 PM                        Thanks, that looks like exactly what I need.  |  IP: Logged John Hawkinson Film God Posts: 2273 From: Cambridge, MA, USA Registered: Feb 2002 posted 12-08-2005 02:54 PM                     If you seriously do that, you may need to upgrade your stack fan. Make sure to measure that you're getting adequate airflow and adequate cooling. --jhawk  |  IP: Logged

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