EP-4739957-A1 - CHILLER ASSEMBLY

Abstract

A chiller assembly includes a frame, a first vapor compression circuit comprising a first compressor configured to circulate a first refrigerant through a first condenser coil and a first evaporator of the first vapor compression circuit, a second vapor compression circuit comprising a second compressor configured to circulate a second refrigerant through a second condenser coil and a second evaporator of the second vapor compression circuit, a process fluid circuit passing through the first evaporator and the second evaporator, wherein the first evaporator and the second evaporator are configured to place the first and second refrigerant in a heat exchange relationship with the process fluid of the process fluid circuit, and at least one fan configured to direct air across the first condenser coil and the second condenser coil, wherein the first condenser coil and the second condenser coil are in a stacked arrangement.

Inventors

• SCHREIBER, JEB W.
• LUTZ, Andy J.
• BORGAOKAR, Manjiri
• KULANKARA, SATHEESH
• KAUFFMAN, JUSTIN P.
• BLASQUEZ, Brian S.
• CHINNARAJ, Anand N.

Assignees

• Tyco Fire & Security GmbH

Dates

Publication Date

20260513

Application Date

20240703

Claims (20)

1. 1 . A chiller assembly for a heating, ventilating, or air conditioning (HVAC) system, the chiller assembly comprising: a condenser assembly comprising a fan, a first condenser coil and a second condenser coil, the first condenser coil being disposed at a first angle with respect to an axis of the fan, the second condenser coil being disposed at a second angle with respect to the axis of the fan, wherein the first angle is different than the second angle.
2. 2. The chiller assembly of claim 1, wherein the condenser assembly is configured to have a triangular cross sectional area in a plane including the axis.
3. 3. The chiller assembly of claim 1, further comprising a third condenser coil and a fourth condenser coil, the third condenser coil being disposed at a third angle with respect to the axis of the fan, the fourth condenser coil being disposed at a fourth angle with respect to the axis of the fan, wherein the third angle is different than the fourth angle.
4. 4. The chiller assembly of claim 3, wherein the first angle is equal to the third angle.
5. 5. The chiller assembly of claim 1, wherein the first condenser coil has a first length and the second condenser coil has a second length, wherein the second length is less than the first length.
6. 6. The chiller assembly of claim 1, further comprising a first compressor in fluid communication with the first condenser coil and a second compressor in communication with the second condenser coil, wherein the first compressor and the second compressor are centrifugal compressors.
7. 7. The chiller assembly of claim 1, wherein the first condenser coil is farther from the axis than the second condenser coil, and the first angle is less than the second angle.
8. 8. The chiller assembly of claim 1, wherein a gap between the first condenser coil and the second condenser coil is greater at a bottom than a top of the condenser assembly.
9. 9. The chiller assembly of claim 8, wherein the first condenser coil is shorter than the second condenser coil.
10. 10. A chiller assembly for a heating, ventilating, or air conditioning (HVAC) system, the chiller assembly comprising: a condenser assembly comprising a fan, a first condenser coil and a second condenser coil, the first condenser coil being disposed at a first angle with respect to an axis of the fan, the second condenser coil being disposed in parallel with the first angle or at a second angle with respect to the axis of the fan, wherein the first angle is different than the second angle, wherein the first condenser coil has a first length and the second condenser coil has a second length, the first length being different than the second length.
11. 11. The chiller assembly of claim 10, wherein the condenser assembly is configured to have a triangular cross sectional area in a plane including the axis.
12. 12. The chiller assembly of claim 10, further comprising a third condenser coil and a fourth condenser coil, wherein the third condenser coil has the first length and the fourth condenser coil has the second length.
13. 13. The chiller assembly of claim 12, wherein the first condenser coil is at the second angle.
14. 14. The chiller assembly of claim 11, wherein the first condenser coil has a first top end closer to the fan than a second top end of the second condenser coil.
15. 15. The chiller assembly of claim 14, wherein a gap between the first condenser coil and the second condenser coil is greater at a bottom than a top of the condenser assembly.
16. 16. A chiller assembly comprising: a frame; a first vapor compression circuit comprising a first compressor configured to circulate a first refrigerant through a first condenser and a first evaporator of the first vapor compression circuit; a second vapor compression circuit comprising a second compressor configured to circulate a second refrigerant through a second condenser and a second evaporator of the second vapor compression circuit; wherein the first evaporator and the second evaporator are coupled to the frame; and wherein the first condenser comprises a plurality of first coils and the second condenser comprises a plurality of second coils, each first coil of the plurality of first coils of the first condenser is positioned next to a corresponding second coil of the plurality of second coils of the second condenser at an angle or each first coil has a different length than the corresponding second coil.
17. 17. The chiller assembly of claim 16, wherein the first vapor compression circuit and the second vapor compression circuit are configured to provide between 700 refrigeration tons and 800 refrigeration tons at an ambient temperature of between 70 degrees F and 80 degrees F.
18. 18. The chiller assembly of claim 16, wherein further comprising a fan disposed above the first condenser, wherein the first condenser is configured to have a triangular cross sectional area in a plane including a central axis of the fan.
19. 19. The chiller assembly of claim 16, wherein the chiller assembly is configured to be housed within an intermodal shipping container.
20. 20. The chiller assembly of claim 16, wherein each first coil of the plurality of first coils of the first condenser is positioned next to a corresponding second coil of the plurality of second coils of the second condenser at the angle and each first coil has the different length than the corresponding second coil.

Description

CHILLER ASSEMBLY CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of and the priority to U.S. Provisional Patent Application No. 63/525,550, filed July 7, 2023, the entire disclosure of which is incorporated by reference herein. BACKGROUND [0002] The present disclosure relates generally to systems and methods for thermal heat management and heat exchangers. The present disclosure relates more particularly to a cooling system for heating, ventilating, or air conditioning (HVAC) systems that includes one or more chillers. [0003] Building equipment, such as heating, ventilating, or cooling (HVAC) equipment, is installed and operated to change environmental conditions within one or more spaces of a building. Buildings may be occupied by equipment (e.g., computing equipment) and/or human occupants. Building occupants can contribute to a thermal load of a building. Chillers can be used to cool/condition various areas of a building. SUMMARY [0004] One implementation of the present disclosure relates to a chiller assembly for a heating, ventilating, or air conditioning (HVAC) system. The chiller assembly can include a frame, a first vapor compression circuit, a second vapor compression circuit, a process fluid circuit, and at least one fan. The first vapor compression circuit includes a first compressor configured to circulate a first refrigerant through a first condenser coil and a first evaporator of the first vapor compression circuit. The second vapor compression circuit includes a second compressor configured to circulate a second refrigerant through a second condenser coil and a second evaporator of the second vapor compression circuit. The process fluid circuit passes through the first evaporator and the second evaporator. The first evaporator and the second evaporator are configured to place refrigerant in a heat exchange relationship with the process fluid of the process fluid circuit. The at least one fan is configured to direct air across the first condenser coil and the second condenser coil. The first condenser coil and the second condenser coil are in a stacked arrangement. [0005] Some embodiments relate to a chiller assembly for a heating, ventilating, or air conditioning (HVAC) system. The chiller assembly includes a condenser assembly including a fan, a first condenser coil and a second condenser coil. The first condenser coil disposed at a first angle with respect to an axis of the fan, and the second condenser coil is disposed at a second angle with respect to the axis of the fan. The first angle is different than the second angle. [0006] In some embodiments, the condenser assembly is configured to have a triangular cross sectional area in a plane including the axis. In some embodiments, the assembly further includes a third condenser coil and a fourth condenser coil. The third condenser coil is disposed at a third angle with respect to the axis of the fan, and the fourth condenser coil is disposed at a fourth angle with respect to the axis of the fan. The third angle is different than the fourth angle. In some embodiments, the first angle is equal to the third angle. [0007] In some embodiments, the first condenser coil has a first length and the second coil has a second length, wherein the second length is less than the first length. In some embodiments, the assembly further includes a first compressor in fluid communication with the first condenser coil and a second compressor in communication with the second coil. The first compressor and the second compressor are centrifugal compressors. [0008] In some embodiments, the first condenser coil is farther from the axis than the second coil, and the first angle is less than the second angle. In some embodiments, a gap between the first condenser coil and the second coil is greater at a bottom than a top of the condenser assembly. In some embodiments, the first condenser coil is shorter than the second coil. [0009] Some embodiments relate to a chiller assembly for a heating, ventilating, or air conditioning (HVAC) system. The chiller assembly includes a condenser assembly including a fan, a first condenser coil and a second condenser coil. The first condenser coil is disposed at a first angle with respect to an axis of the fan, and the second condenser coil is disposed in parallel with the first angle or at a second angle with respect to the axis of the fan. The first angle is different than the second angle. The first condenser coil has a first length, and the second coil has a second length. The first length is different than the second length. [0010] In some embodiments, the condenser assembly is configured to have a triangular cross sectional area in a plane including the axis. In some embodiments, the assembly further includes a third condenser coil and a fourth condenser coil. The third condenser coil has the first length and the fourth coil has the second length. In some embodiments, the first condenser c