The COPELAND ZW series compressors are scroll compressors specially designed by Copeland for heat pump applications. With their EVI (Enhanced Vapor Injection) technology and outstanding low‑temperature performance, they offer significant advantages in the heat pump field.
The ZW series utilizes EVI (Enhanced Vapor Injection) technology, reliably extending the heating range of the heat pump to ambient temperatures as low as –30 °C. Heating capacity is increased by approximately 40 %, and energy efficiency is improved by 22 %. Even under severe cold conditions, it operates stably and can produce hot water up to 85 °C, meeting both domestic hot water and industrial heating demands.
By employing the mature Copeland Scroll® scroll technology, the compression process is continuous and gradual, with virtually no clearance‑volume loss or suction/discharge pressure loss. Volumetric efficiency reaches 90 %–98 %. The coefficient of performance (COP) can reach 3.31 W/W, which is 12 % higher than that of traditional piston compressors. Even at 30 % load, the COP remains above 3.0, delivering remarkable energy‑saving performance.
Product Usage
1. Low-Temperature Air-Source Heat Pump Heating Units
Applicable Environment: Designed specifically for extremely cold regions, capable of stable operation in ultra-low temperature environments ranging from -25°C to -30°C, addressing the issue of heating capacity degradation in traditional heat pumps under severe cold climates.
Technical Support: Relying on EVI (Enhanced Vapor Injection) technology, it maintains a high energy efficiency ratio (COP ≥ 2.0) even in low temperatures, achieving "strong heating in low-temperature conditions."
Typical Scenarios: Auxiliary heating for centralized heating systems in northern regions, independent heating systems in areas without centralized heating, and agricultural greenhouse insulation in cold regions.
2. Household Hot Water and Heating Systems in Cold Regions
Household Heating: Provides distributed heating solutions for villas, rural self-built houses, and retrofits of old residential communities, supporting various terminal forms such as underfloor heating and fan coil units.
Domestic Hot Water: Can be integrated with water tanks to achieve all-day stable hot water supply, with outlet water temperatures reaching up to 60–85°C, meeting high-demand needs such as washing and bathing.
Energy Adaptability: Aligns with policies such as "coal-to-electricity" and "gas-to-electricity" transitions, significantly reducing winter heating costs.
3. Centralized Domestic Hot Water Production Systems
Multi-User Heating: Used for centralized hot water supply in public places such as schools, dormitories, hotels, and gyms, supporting parallel combinations of multiple compressors to meet large-scale water demand.
Intelligent Control: Equipped with variable frequency adjustment and multi-stage energy regulation functions, automatically adjusting output based on water usage load, achieving energy savings of over 30%.
4. Industrial Heating and Process Heat Applications
Industrial Drying: Used for low-temperature dehumidification and drying of materials such as grains, medicinal herbs, sludge, and wood, with high temperature control accuracy and energy consumption reduced by 40%–60% compared to traditional electric heating.
Electroplating Heating: Provides constant-temperature heat sources for electroplating tanks and cleaning tanks, with corrosion-resistant designs suitable for humid, acidic, or alkaline workshop environments.
Other Industrial Heat Applications: Process heating scenarios such as chemical reactor heating, printing drying, and textile setting.
5. Commercial Heat Pump Water Heaters
Commercial Venues: Used for large-capacity hot water supply in hotels, hospitals, swimming pools, bath centers, and other commercial locations, supporting circulating heating + heat storage modes to ensure stable water supply during peak hours.
Energy Efficiency Certification: Complies with national Grade-1 energy efficiency standards. Some models integrate heat recovery functions, achieving a comprehensive energy efficiency ratio (COP) of up to 4.0 or higher.
Intelligent Management: Supports remote monitoring, self-diagnosis of faults, and energy consumption analysis, reducing operational and maintenance costs.
FAQ
Insufficient Heating Capacity ？Causes:
Excessively low ambient temperature
System mismatch or improper design
Blockage in the EVI (Enhanced Vapor Injection) circuit
Refrigerant leakage
Solutions:
Check if the ambient temperature is within the operating range (above –30 °C)
Verify that the system design is correctly matched
Inspect the EVI piping for blockages
Perform a system tightness test to detect refrigerant leaks
We are a professional supplier of air conditioning and refrigeration compressors, committed to providing customers with high-quality compressors from globally renowned brands, including Copeland, Daikin, Danfoss, GMCC, Sanyo, Panasonic, LG, Samsung, and Mitsubishi.
