Sujing’s Carbon Dioxide (R744) Heat Pump: Low-GWP, High Performance

Customization:	Available
After-sales Service:	Engineers Available to Service 24/7 Online
Warranty:	18 months

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Basic Information

Type

Air-Cooled

Cooling Method

Air-cooled

Unit Structure

Integral

Application Fields

Food Processing

Certification

RoHS, ISO, CE, CQC

Working Medium

R744 (CO2)

Specifications

7.5HP

Max Outlet Temp

95℃

Noise Level

Ultra Low (≤56dB)

Heating Mode

Direct Heating / Circulation

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Product Overview

As one of the earliest professional manufacturers of purification air conditioners and HVAC equipment, we specialize in R&D, production, sales, and installation. The heat pump line includes CO2 heat pumps, cascade variable frequency units, air source units, water-cooled chillers, and industrial drying units. Our products are widely applied in industry, agriculture, commerce, and aerospace, exported to over 30 countries including the U.S., Finland, and Canada.

Key Cycle Process: The compressor absorbs low-temperature and low-pressure gaseous CO2 refrigerant, compressing it into a high-temperature supercritical fluid. This fluid enters the gas cooler to release heat into the water. After pressure reduction via the expansion valve, it absorbs ambient heat in the evaporator to repeat the cycle.

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Operating Features

High Temp Heating
Water output reaches more than 90°C.

Low Temp Resilience
Works normally at ambient temperatures as low as -30°C.

Energy Efficiency
First-level efficiency with standard COP not less than 4.6.

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Technical Parameters

Model Item		SJKRS-28 II/C (7.5 HP)
Power Supply		380V/3P/50Hz
Heating Capacity (Standard)		28.1 Kw
COP (Standard)		4.6
Refrigerant		R744 (CO2)
Compressor Type		Semi-closed Reciprocating
Max Outlet Water Temp		90ºC
Ambient Temp Range		-30ºC to 43ºC
Dimensions (LWH)		14509501450 mm

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Main Product Categories

AHUs

Dehumidifiers

Heating & Cooling Units

Hot Water Units

Chillers

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Testing & R&D Centers

Our facilities cover 130,000 square meters with over 1200 employees, dedicated to overall solutions for equipment manufacturing in dehumidification and environmental protection.

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Frequently Asked Questions

How can we guarantee quality?

We always provide a pre-production sample before mass production and conduct a final inspection before shipment to ensure the highest standards.

What is your typical lead time?

Our regular lead time is approximately 25-30 days after receiving the deposit. We can arrange faster production for urgent orders.

Do you offer OEM/ODM services?

Yes, we provide full OEM and ODM services. You can customize the logo, color, packaging, or technical design based on your specific market requirements.

What certifications do your products have?

Our products are certified with CE, ISO, and other necessary international documentation depending on the target market requirements.

How is the product packaged for international shipping?

We use strong, export-standard wooden cases that are safe for long-distance international transport by sea, air, or land.

What after-sales service do you provide?

We offer an 18-month warranty and provide lifetime technical support to all our international clients.