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Author Topic: Theatre Temperature William Leland III Master Film Handler Posts: 336 From: Charleston, SC, Registered: Aug 2002 posted 03-22-2003 04:12 PM                        I was wondering if anyone has put a thermostat on the outside of the booth window? It would be very convenient and save time. In most booths I have worked, projectionist control the temperature. So why not have a thermostat stat on the outside of the booth window. When we would start a movie, we could check the temperature, rather than do a temperature walk threw. not sure about what forum to put this in. sorry  |  IP: Logged Aaron Mehocic Jedi Master Film Handler Posts: 804 From: New Castle, PA, USA Registered: Jun 99 posted 03-22-2003 05:54 PM                     Impractical given that heat rises. If the port is located near the ceiling of the auditorium, the temperature outside will not be the same as the floor level.  |  IP: Logged William Leland III Master Film Handler Posts: 336 From: Charleston, SC, Registered: Aug 2002 posted 03-22-2003 06:11 PM                        yeah i thought of that also, but stadium seating style booths are only a few feet higher than the last row of seats. you could also have the thermostat at the bottom and have the readout displayed at the booth window.  |  IP: Logged Aaron Mehocic Jedi Master Film Handler Posts: 804 From: New Castle, PA, USA Registered: Jun 99 posted 03-22-2003 06:16 PM                     True about stadium, and I wasn't thinking about the possibility of remote sensing. I like climate control located in the booth because it does save a lot of hassles with customers and dumb-ass staff members alike. I guess the age old problem of too hot / too cold keeps rearing it's ugly head once again.  |  IP: Logged John Hawkinson Film God Posts: 2273 From: Cambridge, MA, USA Registered: Feb 2002 posted 03-22-2003 06:28 PM                     Even if you have stadium seating, if you have an HVAC system, all air should be flowing and the temperature near the booth window shouldn't that far off from the rest of the room. Imagine you're measuring the return air temperature and not the room temp. or the supply temp. --jhawk  |  IP: Logged Chris Byrne Expert Film Handler Posts: 102 From: Kirwan, Australia Registered: Jan 2003 posted 03-22-2003 08:00 PM                     William, Like most of our Australian sites, we have gone to a centrally controlled air conditioning system, with DDC, modem, etc. I think that although the system is obviously designed for greater cost efficiency - the old thermometer set-up worked fine. I find that there are just as many complaints now as there was with the old set-up, which just proves the fact that you can't please everybody. Also if you get on OK with your a/c contractors, ask if you can borrow a 'sling' to test the relative humidity inside the booth. Outside humidity regularly tops 90% outside where I live and I found I had to drop the booth temperature a couple of degrees to get anywhere near the optimum 50 - 60% range of realtive humidity.  |  IP: Logged William Leland III Master Film Handler Posts: 336 From: Charleston, SC, Registered: Aug 2002 posted 03-22-2003 09:20 PM                        Chris, I work at the Charleston IMAX and our booth has a De-Humidity control. In Charleston,S.C we have a 90% humidity in the summer time or higher. I can relate to your problems with keeping the humidity in the 50 - 60% range. Right now it is at 49.  |  IP: Logged Aaron Mehocic Jedi Master Film Handler Posts: 804 From: New Castle, PA, USA Registered: Jun 99 posted 03-22-2003 09:46 PM                     William, So you have a de-humidifier, do you also have a humidifier for say, December or January. Here in Pennsylvania my booth is running anywhere from 30% - 40% RH during those months. I know thats a little on the low side, but I'm aprehensive to start up any humidifiers because I don't want to corrode any circuitry by adding excess moisture into the air. Also, maybe John Hawkinson could help here, I know you can get humidifiers for home furnace units, but what about HVAC units ( I apologize, since I don't know much about the mechanics behind HVAC). One last point about 60% RH as being the high end of the optimum range: Everytime my hygrometer is pushing that percentage, I've got bulges on these prints like you wont belive, and I'm being extra vigil for brainwraps because I know there coming.  |  IP: Logged John Hawkinson Film God Posts: 2273 From: Cambridge, MA, USA Registered: Feb 2002 posted 03-22-2003 10:38 PM                     Sorry, Aaron, out of my depth. --jhawk  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 03-22-2003 10:58 PM                     I would dream of having our booth as high as 49% most of the time it is 22 or less  |  IP: Logged Aaron Mehocic Jedi Master Film Handler Posts: 804 From: New Castle, PA, USA Registered: Jun 99 posted 03-22-2003 11:02 PM                     Gordon, How about in the summer? Your only 150 miles due north of me.  |  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 03-22-2003 11:21 PM                        In the summer when I'm another 100 miles due north of Gord I have a hell of a time keeping 50%RH due to the booth air conditioning. The hotter (and more humid) it gets outside the harder it is to keep the humidity up in the booth. At the same time, some of the other theatres I work at (with little for air conditioning) have no problem keeping 100%RH. The 110 degree booth temperatures aren't great either. The rest of the year it's a losing battle no matter what we do.  |  IP: Logged Paul G. Thompson The Weenie Man Posts: 4718 From: Mount Vernon WA USA Registered: Nov 2000 posted 03-23-2003 12:49 AM                     We have one of our theatres enviromently controlled by the HVAC system, and we keep the auditorium and booth temperatures about 70 to 72. I don't know what the RH is, but it must be ok. We never had anyone complain about uncomfortable temperatures in the auditoriums. And I have not seen any adverse effects of excessive or not enough humidity in the booth. Of course, we don't have the extreme temperature swings that other locations have, so maybe that has something to do with it.  |  IP: Logged Rick Stowell Film Handler Posts: 13 From: MN Registered: Feb 2003 posted 03-23-2003 09:13 AM                     To William's original question: We have sensors in each auditorium between the front row and the screen. The actual thermostat and the readout are in the booth. We have a minimum of 2 degrees range, so we've learned over the years to set them at 71 to 73 degrees, winter or summer. Question: When we built 9 years ago, we were told that sound travels through the ducts, so each auditorium has a separate HVAC unit, as well as the lobby. Is this accurate information?  |  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 03-23-2003 04:47 PM                        quote: When we built 9 years ago, we were told that sound travels through the ducts, so each auditorium has a separate HVAC unit, as well as the lobby. Is this accurate information? Sound sure can travel between theatres through ductwork.  |  IP: Logged

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