Sensing temperature in a theater and swiching off air conditioning

Aug 08, 2006 2 Replies

Hi, I have a Sanyo air conditioning system in a 100 people cinema theater. I have a very serious problem in the cinema, the air conditioner simply won't stop producing cold(the temperature sensor who comes with equipment is inefficient for the overal theater arquitecture there are some people who get more cold than others). I need to measure the temperature in the cinema prefably in at least two spots(using a computer with sensors?) and based on the programming(any language will do) and the computer equipped with some relays would shut down and switch on/off the air conditioner. I need help. Can somebody send information on companies that have this type of equipment avaible(off the shelf)e temperature sensor that have to stay far away from the computer( some equipment that doesn't need calibration of temperature sensors?). Because some members of the public are always complaining of an agressive air conditioner in their area in the theater - if i could micromanage temperature changes in the room using a set of computer encoded rules for control). Any help Would be welcome.



Thank You.



Alex.


Alex,

If you are looking for a wireless remote temperature sensor and control, we can help.

Kind Regards

David

----------------------------------------------------------- ORBIT COMMUNICATIONS Pty Ltd - Wireless Solutions that Work (Telemetry, Control, Monitoring, Security, HVAC ...) A.C.N. 107 441 869

Website :

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PO Box 4474 Lakehaven NSW 2263, AUSTRALIA Ph> Hi,

If the existing thermostat is poorly located, then the system may simply be responding to bad information...

Is it possible to add stand-alone fans to the area? A few strategically placed wall/ceiling mount units could spread the air from the ducts and provide more even cooling.

  1. Does the A/C unit have more than one air handler (fan) unit?

- If so, there could be a balance problem.

  1. Do the ducts have adjustable dampers? - This can control the amount of cooled air delivered of one section of the theater relative to another section, thus controlling the temperature of each section separately.

  1. Is the fan speed adjustable? - Running the fan (air handler) at a lower speed for a longer period will provide a more even distribution of cooled air with fewer "cold" spots than the usual "run it fast to cool it quick" setup.

  2. Do you want wired or wireless temperature sensors? - Wired sensors are usually cheaper than wireless ones, but wired sensor installation is usually more expensive (depending on placement, wiring access, local codes, etc).

  1. How many sensors? - Multiple sensors can be averaged to get an overall reading. - If the dampers can be electrically adjusted, then perhaps a sensor for each area of control?

What you want could cost from a few hundred to several thousand dollars/pounds/euros.

John

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