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AIR CONDITIONING SYSTEM

  • US 3,693,704 A
  • Filed: 09/11/1970
  • Issued: 09/26/1972
  • Est. Priority Date: 09/11/1970
  • Status: Expired due to Term
First Claim
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1. A multi-room air conditioning system comprising:

  • A. a plurality of room air conditioning units located in a plurality of zones subject to various thermal loads, each said conditioning unit including;

    1. a liquid to air heat exchanger having a chilled liquid coil and a heated liquid coil, and 2. means for circulating room air in series flow over both said coils;

    a heater adapted to heat a liquid heat exchange medium;

    C. a chiller adapted to cool a liquid heat exchange medium;

    D. a first closed circuit conduit system interconnecting said chilled liquid coils of said heat exchangers and said chiller, said system including;

    1. a first main conduit, 2. individual inlet conduits connected between said first main conduit and the inlet side of said chilled liquid coils, 3. individual return conduits connected between said first main conduit and the outlet side of said chilled liquid coils; and

    4. a first pump for circulating chilled liquid through said first main conduit and said chiller;

    E. a second closed circuit conduit system interconnecting said heated liquid coils of said heat exchangers and said heater, said system including;

    1. a second main conduit, 2. individual inlet conduits connected between said second main conduit and the inlet side of said heated liquid coils;

    3. individual return conduits connected between said second main conduit and the outlet side of said heated liquid coils; and

    4. a second pump for circulating heated liquid through said first main conduit and said heater; and

    F. means for controlling the flow of chilled liquid from said first inlet conduits to said chilled liquid coils;

    G. means for controlling the flow of heated liquid from said second inlet conduit to said heated liquid coils;

    one of said controlling means including pumps associated with the inlet conduits of one of said conduIt systems and individually operable to control the flow of liquid from the main conduit of said one conduit system to the coils connected thereto.

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