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AiDC-1050

1,000 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 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 7 × GB300 rack facility loop
Nominal Cooling Capacity: 1,000 kW / 284 RT
Required Peak-Summer Trim Duty: ~806 kW calculated
Guaranteed Selection Target: ≥ 900 kW net at 95°F ambient

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Four independent circuits

4 independent refrigeration circuits at ~250 kW each for staged capacity and partial-load redundancy.

VSD screw compressors

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

Dedicated plate heat exchangers

4 × 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

8 large-diameter EC axial fans across 2 rows of 4 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 7 × GB300 rack facility loop
Nominal Cooling Capacity	1,000 kW / 284 RT
Required Peak-Summer Trim Duty	~806 kW calculated
Guaranteed Selection Target	≥ 900 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	350 GPM / 79.5 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	4 independent circuits
Circuit Capacity	~250 kW each
Compressor Architecture	4 × VSD semi-hermetic screw compressors
Evaporator Architecture	4 × dedicated refrigerant-to-glycol plate heat exchangers
Condenser Architecture	V-bank microchannel air-cooled condenser
Fans	8 × large-diameter EC axial fans; 2 rows × 4

Performance

Full-Load Chiller Input Target	~230–275 kW at design point
Full-Load Heat Rejection Target	~1,250–1,300 kW
Sound Target	≤ 78 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 ~1,080 kW · Input ~200 kW · COP ~5.4
85°F / 29°C Ambient	EWT 40°C · LWT 30.5°C · Net ~1,030 kW · Input ~220 kW · COP ~4.7
95°F / 35°C Ambient	EWT 40°C · LWT 30.5°C · Net ~1,000 kW · Input ~245 kW · COP ~4.1
105°F / 41°C Ambient	EWT 40°C · LWT 30.5°C · Net ~930 kW · Input ~275 kW · COP ~3.4
115°F / 46°C Ambient	EWT 40°C · LWT 30.5°C · Net ~860 kW · Input ~305 kW · COP ~2.8

System Operating (Downstream of Dry Cooler)

Chiller to CDU	~30.5°C / 86.9°F
CDU Return at ~980 kW Rack Load	~42°C / 107.6°F at ~350 GPM
Dry Cooler	42°C entering → 40°C leaving
Dry Cooler Heat Rejection	~170–175 kW at stated condition
Residual Trim-Chiller Duty	~805–810 kW
Chiller Leaving Target	30.5°C maximum

Physical / Electrical

Overall Dimensions	240 × 96 × 96 in (6,096 × 2,438 × 2,438 mm)
Operating Weight Target	~11,850 lb
Facility Connections	6 in minimum; final by velocity / pressure-drop review
Electrical Service	480 V / 3 phase / 60 Hz
Estimated MCA	~430 A preliminary
Recommended MOCP	500 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.