Danfoss
CTM Multi Ejector
The Danfoss CTM Multi Ejector Solution™, featuring the CTM multi ejector and AK-PC 782A/B controller, takes CO₂ (R744) refrigeration to the next level of efficiency.
Danfoss
Company profile
Fig. 01 — CTM Multi Ejector
01 Overview
This innovative solution significantly improves the Coefficient of Performance (COP), enabling CO₂ systems to compete with traditional HFC systems, even in high-temperature environments. Operating at a maximum pressure of 2030 psig (140 bar) and within a wide temperature range from -10°C to 50°C (14°F to 122°F), the CTM 6 handles a mass flow up to 2875 kg/h (6338 lb/h). Its durable aluminum alloy body, brass ejectors, and stainless-steel connections ensure long-lasting performance. By eliminating the “CO₂ equator,” this solution offers reduced energy consumption, making CO₂ refrigeration systems both sustainable and cost-effective, without sacrificing reliability or efficiency. Perfect for businesses aiming to achieve environmental goals while optimizing performance.
01
Functionality and Design
The CTM 6 High-Pressure Valve is specifically engineered for CO2 (R744) systems with parallel compression. It plays a crucial role by lifting a portion of the gas from the medium-temperature (MT) suction and blending it with the gas cooler output at medium pressure. This innovative process optimizes system efficiency, enabling better performance compared to traditional parallel compressor setups. Additionally, the solution makes CO2 systems viable in high-temperature regions, effectively removing the “CO2 equator” limitation.
02
Technical Specifications
Refrigerant Compatibility
R744 (CO₂).Pressure Capabilities
Operates at a maximum working pressure of 2030 psig (140 bar) and has been tested up to 2716.6 psig (200 bar).Temperature Range
Operates in ambient conditions from -10°C to 50°C (14°F to 122°F).Mass Flow Capacity
Total capacity of up to 2875 kg/h (6338 lb/h), with individual ejector capacities ranging from 125 kg/h to 1000 kg/h.Material and Build
Features an aluminum alloy body, brass ejectors, and stainless-steel connections, ensuring durability and reliable performance under extreme conditions.
03
Practical Application and Benefits
By enhancing COP, the Multi Ejector Solution™ reduces energy consumption, making CO2 systems a viable and sustainable alternative to HFC-based systems like R404A. Its flexible design supports a range of configurations, with brazing and welding options simplifying integration. The solution is compliant with PED, cURus, and other regulatory standards, providing assurance for safety and reliability.
This system is particularly well-suited for businesses looking to optimize refrigeration efficiency while meeting stringent environmental goals, regardless of climate conditions.
Learn more about Danfoss’ CO2 product portfolio here
02 Technical dossier
Specifications
9 data points · as published by Danfoss
- Refrigerant
- CO₂
- Category
- Components
01Performance
1 entry
- Pump volume flow (gal/min)
- Not specified in gallons per minute
02Operating limits
2 entries
- Max operating pressures
- Max. working pressure: 140 bar (2030 psig)
- Pump: min, max liquid temp
- Min liquid temp: -10 °C (14 °F)Max liquid temp: 50 °C (122 °F)
03Refrigerant
1 entry
- Refrigerant
- CO₂
04Components & options
1 entry
- Pump: variable speed?
- Not specified
05Build & dimensions
3 entries
- Dimensions
- "Gross weight: 10.617 kgNet weight: 9.3 kgVolume: 13.77 liters"
- Connection dimensions
- "Connection A (brazing): 7/8 inConnection C (brazing): 7/8 inConnection E (brazing): 1 1/8 in"
- Material
- Aluminum alloy
06Certification & markets
1 entry
- Region
- Global
Talk to Danfoss about the CTM Multi Ejector.
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