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AiDC-2050

2,050 kW air-to-water trim chiller engineered to work downstream of a dry cooler loop, holding facility leaving fluid temperature during peak-summer trim duty for expanded high-density GPU/ASIC rack deployments.

Also in Air Cooling

Hyperscale AI Campuses
Trim / Peak-Summer Cooling

Application: Trim chiller downstream of dry cooler for expanded GB300 facility loop
Nominal Cooling Capacity: 2,050 kW / 583 RT
Required Peak-Summer Trim Duty: ~1,612 kW calculated
Guaranteed Selection Target: ≥ 1,800 kW net at 95°F ambient

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Eight independent circuits

8 independent refrigeration circuits at ~256 kW each for staged capacity and partial-load redundancy.

VSD compressors

8 × VSD semi-hermetic compressors modulate to match real-time trim load.

Dedicated plate heat exchangers

8 × dedicated refrigerant-to-glycol plate heat exchangers, one per circuit.

Low-GWP refrigerant

R-1234ze(E), a mildly-flammable (A2L) low-GWP refrigerant, reduces environmental impact versus legacy options.

Large-diameter EC fan array

16 large-diameter EC axial fans across 2 rows of 8 drive the V-bank microchannel condenser.

Dry-cooler economizer integration

Runs as second-stage trim behind a dry cooler economizer, engaging only when ambient exceeds the dry cooler's capability.

Engineering Design Basis

Application	Trim chiller downstream of dry cooler for expanded GB300 facility loop
Nominal Cooling Capacity	2,050 kW / 583 RT
Required Peak-Summer Trim Duty	~1,612 kW calculated
Guaranteed Selection Target	≥ 1,800 kW net at 95°F ambient
Design Ambient	95–104°F / 35°C
Entering Facility Fluid	40.0°C / 104°F
Leaving Facility Fluid	30.5°C / 86.9°F
Nominal Facility Flow	700 GPM / 159 m³/h
Fluid	70% DI water / 30% inhibited propylene glycol
Evaporator Pressure Drop Target	≤ 15 psi / 103 kPa
Water-Side Working Pressure	150 psig minimum
Warranty	Available on request

Mechanical

Refrigerant	R-1234ze(E), A2L
Refrigeration Circuits	8 independent circuits
Circuit Capacity	~256 kW each
Compressor Architecture	8 × VSD semi-hermetic compressors
Evaporator Architecture	8 × dedicated refrigerant-to-glycol plate heat exchangers
Condenser Architecture	V-bank microchannel air-cooled condenser
Fans	16 × large-diameter EC axial fans; 2 rows × 8

Performance

Full-Load Chiller Input Target	~460–550 kW at design point
Full-Load Heat Rejection Target	~2,500–2,650 kW
Sound Target	≤ 81 dBA at 10 ft (subject to final fan/coil selection)

Preliminary Performance Map

75°F / 24°C Ambient	EWT 38°C · LWT 30.5°C · Net ~2,160 kW · Input ~400 kW · COP ~5.4
85°F / 29°C Ambient	EWT 40°C · LWT 30.5°C · Net ~2,060 kW · Input ~440 kW · COP ~4.7
95°F / 35°C Ambient	EWT 40°C · LWT 30.5°C · Net ~2,050 kW · Input ~500 kW · COP ~4.1
105°F / 41°C Ambient	EWT 40°C · LWT 30.5°C · Net ~1,860 kW · Input ~550 kW · COP ~3.4
115°F / 46°C Ambient	EWT 40°C · LWT 30.5°C · Net ~1,720 kW · Input ~610 kW · COP ~2.8

System Operating (Downstream of Dry Cooler)

Chiller to CDU	~30.5°C / 86.9°F
Facility Return at Doubled Design Load	~42°C / 107.6°F at ~700 GPM
Dry Cooler	42°C entering → 40°C leaving
Dry Cooler Heat Rejection	~340–350 kW at doubled flow/capacity basis
Residual Trim-Chiller Duty	~1,610–1,620 kW
Chiller Leaving Target	30.5°C maximum

Physical / Electrical

Overall Dimensions	Approx. 480 × 96 × 96 in (12,192 × 2,438 × 2,438 mm)
Operating Weight Target	~23,700 lb preliminary
Facility Connections	8 in minimum; final by velocity / pressure-drop review
Electrical Service	480 V / 3 phase / 60 Hz
Estimated MCA	~860 A preliminary
Recommended MOCP	1,000 A preliminary
Controls	PLC/HMI; BACnet/IP; Modbus TCP/RTU

Options

Details	Engineering design basis — preliminary technical data, subject to final engineering. Exact compressor model, refrigerant charge, MCA/MOCP, airflow, and PHE model require final OEM selection software at the stated duty point.