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AIR CONDITIONING SYSTEM WITH VARIABLE PRIMARY AIR VOLUME TERMINAL AND METHOD OF OPERATION THEREFOR

  • US 3,720,258 A
  • Filed: 07/14/1970
  • Issued: 03/13/1973
  • Est. Priority Date: 07/14/1970
  • Status: Expired due to Term
First Claim
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1. An air conditioning system for controlling the condition of air in a space comprising:

  • a. means for conditioning primary air, b. terminal unit means in said space, c. means for transmitting the conditioned primary air from said conditioning means to the terminal unit, d. said terminal unit including, 1. a mixing duct having an inlet for air to be induced from said space and an outlet for conditioned supply air into said space, 2. a primary air plenum in communication with the conditioned air delivered to said terminal unit having nozzle means for introducing a constant relatively small proportion of the conditional primary air into the mixing duct to induce a flow of conditioned supply air from this mixing duct through said outlet into the space, 3. by-pass means in communication with the conditioned primary air delivered to the terminal unit and connected to the mixing duct for delivering a supply of damped conditioned primarY air into the mixing duct at a point spaced from and independent of the induction air delivered by the nozzle means, and 4. means responsive to changes in the thermal requirements of the space to be conditioned to regulate the conditioned primary air to be delivered by said by-pass means into the mixing duct relative the volume of air induced from the space through the inlet to the mixing duct whereby a constant volume of conditioned supply air including a ratio of by-pass conditioned air and induced space air is delivered by the terminal unit to obtain the necessary thermal capacity for meeting the cooling requirements of the space to be conditioned.

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