Heating and cooling system

• US 3,303,873 A
• Filed: 03/29/1965
• Issued: 02/14/1967
• Est. Priority Date: 03/29/1965
• Status: Expired due to Term

• Current Assignee: American Standard Inc. (Trane Technologies plc)
• Original Assignee: Clarence L. Ringqulst, John W. Lorenz
• Inventors: Ringqulst, Clarence L., Lorenz, John W.
• Application Number:
  US04/443,495
• Time in Patent Office: 687 Days
• US Class Current: 165/221
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/83 by controlling the supply of heat-exchange fluids to heat-exchangers
• CPC Class Codes: F24F 11/84 using valves
• CPC Class Codes: F24F 2110/10 Temperature
• CPC Class Codes: F24F 3/08 with separate supply and return lines for hot and cold heat-exchange fluids i.e. so-called "4-conduit" system

Claims

1. IN AN AIR CONDITIONING SYSTEM CONSISTING OF A PLURALITY OF ZONES TO BE CONDITIONED, A HEAT EXCHANGE UNIT IN EACH OF SAID ZONES, A HOT WATER PIPING CIRCUIT INCLUDING A WATER HEATER ARRANGED TO CIRCULATE HOT WATER TO AND FROM EACH OF SAID HEAT EXCHANGE UNITS AND A SEPARATE CHILLED WATER PIPING CIRCUIT INCLUDING A WATER CHILLER ARRANGED TO CIRCULATE CHILLED WATER TO AND FROM EACH OF SAID HEAT EXCHANGE UNITS;

THE IMPROVEMENT COMPRISING MEANS PLACING SAID WATER HEATER IN FLUID COMMUNICATION WITH SAID CHILLED WATER PIPING CIRCUIT WHEREBY SAID LATTER CIRCUIT MAY BE UTILIZED TO CIRCULATE HOT WATER DURING PERIODS OF HIGH HEAT DEMAND.