Search Images Maps Play YouTube News Gmail Drive More »
Advanced Patent Search | Web History | Sign in

Patents

Disclosed is a packaged chilling system for providing chilled water to an air conditioning system for a building that includes: a duct system; an air handling system; and a water chilling system; wherein: the duct system is in operable communication with a building that has a plurality of rooms, at least one of the rooms having a sensor for detecting the room air temperature in the room, the duct system comprising at least one supply duct for directing low temperature air from the air handling system to the building and at least one return duct for directing high temperature air from the building to the air handling system; the air handling system includes a plurality of air handling units, each air handling unit comprising an air inlet for receiving high temperature air from the building, a cooling coil that includes at least one conduit through which chilled water flows, the cooling coil having multiple passes and positioned for heat transfer contact with the high temperature air,...

Inventor: Tom L. Pierson
Original Assignee: TAS, Ltd.
Primary Examiner: Harry B. Tanner
Current U.S. Classification: 62/299; 62/431; 62/435; 62/448
International Classification: F25D/1904

View patent at USPTO
Search USPTO Assignment Database

Citations

Cited PatentFiling dateIssue dateOriginal AssigneeTitle
US2336066May 28, 1941Dec 7, 1943AIR CONDITIONING APPARATUS
US2689467Apr 13, 1951Sep 21, 1954UTILIZATION OF MOISTURE FROM AIR FOR
US3148513Apr 2, 1962Sep 15, 1964 EWING
US4244517Mar 22, 1979Jan 13, 1981The Trane CompanyTemperature control for variable volume air conditioning system
US4446703May 25, 1982May 8, 1984Air conditioning system and method
US4792091Mar 4, 1988Dec 20, 1988Method and apparatus for heating a large building
US4926649Jul 11, 1988May 22, 1990Method and apparatus for saving energy in an air conditioning system
US5111875Aug 1, 1990May 12, 1992Modular heat installation for premises with water as a heat transmitting medium
US5894739Jul 10, 1997Apr 20, 1999York International CorporationCompound refrigeration system for water chilling and thermal storage
US6185946May 8, 2000Feb 13, 2001System for sequencing chillers in a loop cooling plant and other systems that employ all variable-speed units
US6209330May 17, 1999Apr 3, 2001Caterpillar Inc.Modular air handling system and method for providing cooling
US6405549Nov 8, 2000Jun 18, 2002DO Enterprises, LLCPortable heating unit using a refrigerant circuit movable within a room
US6422018Aug 17, 2000Jul 23, 2002Gas turbine engine modular cooling and heating apparatus

Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US7716930Jan 29, 2007May 18, 2010General Electric CompanyIntegrated plant cooling system
US8147301Jan 19, 2007Apr 3, 2012Air handling system for clean room
US8201411Dec 11, 2008Jun 19, 2012General Electric CompanyDeep chilled air washer

Claims

1. A prefabricated chilling water system for a building, comprising:

a duct system;

an air handling system; and

a water chilling system wherein;

the duct system is in operable communication with the building, the building having a plurality of rooms, the duct system comprising at least one supply duct for directing low temperature air from the air handling system to the building and at least one return duct for directing high temperature air from the building to the air handling system;
the air handling system includes a plurality of air handling units, each air handling unit comprising an air inlet for receiving high temperature air from the building, a cooling coil that includes at least one conduit through which chilling water flows, the cooling coil having multiple passes and positioned for heat transfer contact with the high temperature air, and a fan for increasing static pressure of air in the air handling unit;
the water chilling system is installed at a location proximate the building, and is operably connected to the air handling system cooling coil; and
the water chilling system includes a moveable support structure comprising a support base on which a plurality of water chilling system components are affixed, the components including at least one water chiller for lowering the temperature of chilling water from a high temperature to a low temperature.

2. The prefabricate chilling water system of claim 1, further comprising a motor control center or starter which is mounted upon the support base and wherein one or more chiller motors and one or more pump motors are prewired to the motor control center such that field power wiring can be brought to a single point power connection for each voltage.

3. The prefabricated chilling water system of claim 1, further comprising an expansion tank which is operably connected to the chilling water system and mounted on the support base.

4. The prefabricated chilling water system of claim 2, further comprising a controls system, the control system being prewired to a chiller control panel and the motor control center and a chilled water flow switch which is prepiped to the one or more water chillers and wired to safety interlocks.

5. The prefabricated chilling water system of claim 1, further comprising a weatherproof enclosure or building with access doors or removable panels for maintenance or personnel access to the water chilling components.

6. The prefabricated chilling water system of claim 1 further comprising a refrigerant gas monitor which is operably connected to an alarm and an exhaust fan, both being activated when a refrigerant level reaches a predetermined setpoint as measured by the refrigerant gas monitor.

7. The prefabricated chilling water system of claim 1, wherein an annualized chilled water production cost is minimized and the chilled water is sold on a metered basis.

8. The prefabricated chilling water system of claim 1, wherein the circulating water comprises additives to reduce a freezing point of the chilling water.

9. The prefabricated chilling water system of claim 8, wherein the additive comprises sodium nitrate.

10. The prefabricated chilling water system of claim 8, wherein the additive comprises potassium formate.

11. The prefabricated chilling water system of claim 1, in which the duct system also includes a plurality of room ducts, each room duct leading to the individual rooms.

12. The prefabricated chilling water system of claim 1, in which the at least one water chiller includes a first chiller and a second chiller, the first and second chillers being arranged in series such that chilling water is capable of sequentially passing through the first and second chillers.

13. The prefabricated chilling water system of claim 1 in which the water chilling system includes two or more water chillers that are configured such that chilling water is capable of passing sequentially through each of the two or more water chillers, the chilling water being chilled to a first temperature after passing through the first water chiller, the same chilling water being chilled to a second temperature after passing through the second water chiller.

14. The prefabricated chilling water system of claim 1, in which the at least one water chiller includes a first mechanical chiller and a second mechanical chiller, the first and second mechanical chillers being arranged in series, wherein chilling water leaving the second mechanical chiller has a lower temperature than the temperature of the chilling water leaving the first mechanical chiller.

15. The prefabricated chilling water system of claim 1, wherein the at least one water chiller comprises a first water chiller and a second water chiller, the first and second water chillers being arranged in series and configured to provide a staged chilling water temperature drop of a high water temperature of from about 45° F. to about 75° F. to a lower water temperature of from about 34° F. to about 55° F.

16. The prefabricated chilling water system of claim 1, wherein the at least one water chiller comprises a first water chiller and a second water chiller, the first and second water chillers being arranged in series and configured to provide a staged chilling water temperature drop of a high water temperature of from about 48° F. to about 60° F. to a lower water temperature of from about 36° F. to about 45° F.

17. The prefabricated chilling water system of claim 1 in which the at least one water chiller includes a mechanical chiller or an absorption chiller.

18. The prefabricated chilling water system of claim 1, in which at least some of the chilling system components are pre-assembled on the moveable support structure, being affixed to the support base before the chilling water system is installed proximate the building.

19. The prefabricated chilling water system of claim 1, in which the support base comprises a frame that includes a plurality of steel I-beams on which a metal plate is affixed.

20. The prefabricated chilling water system of claim 1, in which the chilling water system further includes a housing removably affixed to the moveable substructure, the housing sized and configured to enclose the plurality of components.

21. The prefabricated chilling water system of claim 1, in which the chilling water system is assembled before it is shipped to the location proximate the building, such that the assembled chilling water system includes at least two compressors and at least two evaporators, wherein the evaporators are capable of operating at different temperatures and refrigerant pressures to achieve a sequential chilling of the chilling water passing through the evaporators.

22. The prefabricated chilling water system of claim 1, in which the chilling water system is assembled before it is installed at the location proximate the building, such that the assembled water chilling system includes at least two duplex compressor chillers having four evaporators configured to operate at different temperatures and refrigerant pressures to achieve four stages of sequential chilling of the chilled chilling water, and at least four condensers, at least one chilled water pump, at least one suction strainer, at least one expansion tank, at least one isolation valve, at least one motor starter and at least one control system.

23. The prefabricated chilling water system of claim 1, additionally comprising a chilling water temperature sensor operably connected to chilling water passing through the cooling coil, and further comprising a controller responsive to the water temperature sensor, capable of adjusting either the temperature or the flowrate of the chilling water.

24. The prefabricated chilling water system of claim 1, additionally comprising a water temperature control system operably connected to the at least one water chiller, for adjusting the temperature of the chilling water passing through the at least one water chiller.

25. The prefabricated chilling water system of claim 24, additionally comprising a prewired control system, the control system being prewired to the water temperature control system and is configured to stop and start the water chillers, the chilled water pumps and the condenser water pumps to provide a predetermined leaving chilling water temperature and flowrate.

26. The prefabricated chilling water system of claim 1, additionally comprising a chilled water thermal energy water storage tank that is operably connected to the water chiller.

27. The prefabricated chilling water system of claim 1, in which the at least two condensers comprise a first condenser and a second condenser and wherein condenser water passes through the second condenser prior to passing through the first condenser and wherein the chilling water passes through the first condenser prior to passing through the second condenser, resulting in a differential refrigerant head pressure of the second compressor which is within about 20% of a differential refrigerant head pressure of the first compressor.

28. The prefabricated chilling water system of claim 1, additionally comprising a cooling tower.

29. The prefabricated chilling water system of claim 1, additionally comprising a cooling tower affixed to the moveable support structure.

30. The prefabricated chilling water system of claim 1, additionally comprising a cooling tower, in which (a) the support base is a lower support base on which the plurality of water chilling system components are affixed; (b) the moveable support structure additionally includes an upper support base positioned above the lower support base upon which the cooling tower is mounted.

31. The prefabricated chilling water system of claim 1, in which the water chilling system is assembled before it is installed at the location proximate the building, such that the assembled water chilling system includes at least one chiller, at least one chilled water circulating pump, at least one isolation valve, at least one chiller motor starter, at least one circulation pump motor starter, at least one condenser water pump and at least one control system.

32. The prefabricated chilling water system of claim 1, in which the water chilling system is assembled before it is installed at the location proximate the building, such that the assembled water chilling system includes at least one chiller, at least one chilled water circulating pump, at least one isolation valve, at least one chiller motor starter, at least one circulating pump motor starter, at least one condenser water pump and at least one control system.

33. The prefabricated chilling water system of claim 1, in which the high temperature air has a temperature of from about 100° F. to about 50° F. and the low temperature air has a temperature of from about 40° F. to about 70° F.

34. The prefabricated chilling water system of claim 1, in which the high temperature air has a temperature of from about 80° F. to about 60° F. and the low temperature air has a temperature of from about 45° F. to about 60° F.

35. A prefabricated chilling water system, comprising:

a duct system;

an air handling system; and

a modular water chilling system; wherein:

the duct system is in operable communication with a building that has a plurality of rooms, at least one of the rooms having a room air temperature sensor for detecting the room air temperature in the room, the duct system comprising at least one supply duct for directing low temperature air from the air handling system to the building and at least one return duct for directing high temperature air from the building to the air handling system;
the air handling system includes a plurality of air handling units, each air handling unit comprising an air inlet for receiving high temperature air from the building, a cooling coil that includes at least one conduit through which chilled chilling water flows, the cooling coil having multiple passes and positioned for heat transfer contact with the high temperature air, and a fan for increasing the static pressure of air in the air handling unit;
the modular water chilling system is installed at a location proximate the building, and is operably connected to the air handling system; and
the modular water chilling system includes at least two moveable support structures, with the two or more support structures designed to be bolted together at the location proximate the building to form the modular water chilling system, each support structure containing some of the components necessary to complete the modular water chilling system, such that when the two or more support structures are assembled together they collectively contain at least one chiller and at least one chilled water circulation pump.

36. The prefabricated chilling water system of claim 35, wherein the two or more moveable support structures further include at least one condenser water pump.

37. The prefabricated chilling water system of claim 35, wherein the two or more movable support structures further include at least one prewired motor starter.

38. The prefabricated chilling water system of claim 27, wherein the two or more movable support structures further include at least one control system.

Drawings