Ultra-low Ambient Temperature Air Source Screw Heat Pump Unit

Ultra-low ambient temperature air source screw heat pump unit is specifically developed to meet the heating needs of centralized heating in northern regions and extremely cold areas. In support of the national dual-carbon goals to reduce or restrict coal and gas boiler usage, Xinlei has independently developed this unit, filling the technology gap for high-efficiency, energy-saving products in harsh environments and providing an ideal solution for smog mitigation and traditional boiler replacement. The unit is widely applicable to various commercial and residential buildings including villas, shops, hotels, office buildings, schools and residential communities.

National standard heating capacity: 179.8–1069 kWNational standard cooling capacity: 228.3–1469 kW

Features Core Technology Machine structure IOT Technology Application Scenarios Product Recommendation

Features

High Efficiency and Energy Saving

The two-stage compression with vapor injection improves efficiency by more than 10% compared to single-stage cycles.

Stable and Reliable

Dual cooling with lubricating oil and refrigerant enhances cooling performance, allowing the compressor to operate at lower temperatures even under harsh conditions.

Wide Operating Range

Capable of stable heating operation in environments as low as -35°C, with a maximum outlet water temperature of up to 60°C.

Smart Control

Network-based intelligent control provides monitoring and digital energy-saving management solutions for central air conditioning operation and manufacturers.

Core Technology

Dual-sided Asymmetric 5:7 Rotor Profile Design

Utilizes an asymmetric rotor profile to significantly reduce the leakage triangle area, minimizing leakage between rotor strokes and ensuring volumetric efficiency at low speeds. This enhances performance under partial load conditions. The third-generation rotor profile with dual-sided 5:7 design offers higher strength and is suitable for high pressure ratio applications.

Dual Inverter Technology + Adjustable Vi

Dual inverter control precisely regulates pressure between high and low stages for improved energy efficiency. The combination of adjustable Vi and dual inverter technology expands the operating range. Frequency modulation avoids energy loss during partial load operation, further enhancing unit performance under varying conditions.

High-Efficiency Compressor

The compressor motor features H-class insulation, rated for 180°C—one level higher than F-class—ensuring reliable operation under harsh conditions. Equipped with high-precision bearings from leading international brands, including Swedish SKF bearings, the compressor can operate continuously for ≥50,000 hours.

Machine structure

Axial Fan

High-efficiency, low-noise, and corrosion-resistant axial fan.

Shell-and-Tube Heat Exchanger

Equipped with a standard flooded shell-and-tube heat exchanger, featuring a liquid level sensor for real-time evaporation level control, with a design approach temperature difference as low as 0.5°C.

High-Efficiency Oil Separator

Horizontal type with built-in separation filter and unique exhaust device; oil separation efficiency reaches 99.9%.

Gas-liquid Separator

Effectively prevents liquid slugging in the compressor, ensuring safe and stable operation of the unit.

Fin-type Heat Exchanger

Uses high-efficiency seamless inner-thread copper tubes and ultra-thin hydrophilic nano-coated fins; resists frost and improves performance.

Electronic Expansion Valve

From a well-known industry brand; works with liquid level sensors to quickly adapt to changing operating conditions.

Dual Permanent Magnet Variable Frequency Compressors

Dual-frequency regulation with a 15%–100% operating range; dual Vi adjustment for higher energy efficiency.

IOT Technology

The cloud platform can record and provide the operating status and operating parameters of the wind turbines bound to the platform, as well as perform fault alarm and data recording analysis. Users can log in to the platform to realize remote monitoring and energy-saving settings management, enabling users to realize real-time equipment management. At present, the IoT cloud platform provides ANDRIOD, IOS, and PC clients, and open interfaces to link with third-party software such as ERP, providing users with more possibilities.

Statistical analysis of gas data to help enterprises make business decisionsStable air pressure, scientific energy saving of the wholeUse gas on demand to avoid wasting energyEquipment operation daily records, maintenance and daily management are more convenientReal-time monitoring of energy consumption, real-time data collectionVisualize equipment running status and view real-time working statusEquipment remote management, intelligent joint control