Bitmain Antspace HW5 Hydro Mining Container

The Bitmain Antspace HW5 is turnkey infrastructure for operators running hydro-cooled Antminers at scale. It integrates miner mounting, power distribution, and liquid cooling connections into one certified 40-foot container, paired with a dry-wet cooling tower for heat rejection. The design goal is to take an operator from a power connection and a prepared pad to 210 operational hydro miners with minimal on-site engineering. Capacity and compatible hardware. The HW5 houses up to 210 units of Bitmain's hydro-series Antminers, designed around the S19 Hydro and S21 Hydro lines. Bitmain specifies these as the recommended miners for the platform. The coolant loop and power distribution are… dimensioned for this miner count and the corresponding thermal and electrical load. Efficiency and the 1.032 PUE. Power Usage Effectiveness is the single most important infrastructure metric for a mining facility. It is total facility power divided by the power delivered to the IT load, where a perfect score of 1.0 means zero overhead. The HW5's 1.032 PUE means 96.8 percent of drawn power reaches the miners, with only 3.2 percent consumed by pumps, fans, and the cooling system. This is dramatically better than air-cooled facilities, which typically run PUE of 1.4 to 2.0, meaning 30 to 50 percent of their power is lost to cooling. At utility scale, that efficiency gap translates directly into lower operating cost per terahash. Power distribution and electrical specifications. Operating power is 1,062 kW. The power distribution cabinet uses two main switches rated 1200A each, with rated current at or below 986A and each miner drawing up to 10A. Input is 400V±5% at 50/60Hz, three-phase. The inlet copper cabling specification requires four runs of 600kcMil (300mm²) single-core cable per phase (L1, L2, L3) and for neutral, plus two runs of 500kcMil (240mm²) for protective earth, all rated above 600V. A single 2,500 kVA transformer supports two HW5 containers operating simultaneously. The dry-wet cooling tower. Heat rejection is handled by an integrated dry-wet hybrid tower rated for 1,200 kW of dissipation. At 28°C wet-bulb temperature it maintains 35°C outlet water, the inlet temperature hydro miners need for stable operation. The dry-wet design is the key distinction from a pure dry cooler: it operates in dry mode under cooler conditions and engages evaporative (wet) cooling only when ambient heat load requires the additional capacity. This hybrid approach balances water efficiency against cooling performance, consuming just 0.7 to 1.3 m³/h of water depending on conditions, far less than a fully evaporative wet tower while maintaining cooling capacity that a pure dry tower would lose in hot ambient conditions. Coolant flow rate is 85 m³/h or greater. The tower draws 15 to 29 kW for its own pumps and fans and produces 70 dBA at 15 metres. Connections use DN40 internal-thread interfaces with a DN65 drain pipe. Weights and logistics. The container ships at 14 tonnes and reaches 24 tonnes operating weight once loaded with miners and coolant. Deployment requires a hardened, level surface (±1 degree) rated to hold at least 36 tonnes, and a 20-tonne crane to position the container and cooling tower. The cooling tower needs at least 2 metres of air-inlet clearance on all sides. Stairs, walkway boards, transformers, cables, bridges, and cable distribution boxes are not included with the container and must be provisioned separately. Environmental and site requirements. Operating temperature range is -25°C to 40°C, humidity 10 to 90 percent RH. In high-humidity regions, ambient temperature must not exceed 40°C. Below 0°C, the inlet and outlet shutters must close and miners require heating to above 20°C before startup. Operating elevation must be below 2,000 metres; above 1,000 metres with a 2,500 kVA transformer, the miner count per unit decreases by approximately 1 percent. Note that the ambient temperature around the container does not equal the ambient temperature experienced by the miners inside the cooling loop. Certification and compliance. The container structure carries China Classification Society (CCS) certification. Electrical and safety systems comply with NFPA 79:2021, UL 508A:2018 R8.21, CSA C22.2 No.14-18, ANSI/ISO 12100:2012, and IEC 60204 Ed 5.1 2009. Where the HW5 fits. The HW5 at 210 miners and 1,062 kW sits a step below the larger Antspace HD5 (308 miners, 1,512 kW), making it the right choice for operators building at a slightly smaller per-container scale or matching container capacity to a 2,500 kVA transformer pairing. Both deliver the speed, portability, and lower per-unit land and cabling cost that containerized deployment provides over fixed infrastructure. MillionMiner ships the Antspace HW5 worldwide DDP with duties and customs handled before delivery, and supports installation and commissioning. For operators who prefer not to host on their own site, MillionMiner operates hosting facilities across four US data centers.