NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle of Cascade Refrigeration System
In our state-of-the-art NH3/CO2 cascade refrigeration system, innovation meets efficiency. This sophisticated system is elegantly divided into two distinct stages: the high-temperature stage, utilizing NH3 as the refrigerant, and the low-temperature stage, leveraging CO2. At the heart of this system lies a condensation evaporator, ingeniously designed to connect both stages. Here, NH3 refrigerant evaporates at the high-temperature level, cooling and condensing the CO2 gas from the low-temperature level, thereby creating a seamless and efficient cycle of cooling and heat exchange.
The magic of our system unfolds as the heat load is adeptly transferred to the CO2 refrigerant via the end evaporator. This absorbed heat travels seamlessly to the high-temperature NH3 refrigerant through the condensing evaporator. From there, it is effortlessly dissipated into the environment via the high-temperature condenser. Our system ensures that the condensed CO2 enters the reservoir smoothly, proceeding through the dryer filter and throttle valve, reaching the CO2 gas-liquid separator. The liquid CO2 is then expertly sent to the CO2 evaporator through a circulation pump, repeating this sophisticated cascade refrigeration cycle with unwavering precision and reliability.
In this cutting-edge NH3/CO2 cascade refrigeration system, each temperature level operates as a single refrigerant system. The high-temperature NH3 system mirrors conventional designs with a refrigeration compressor, condenser, liquid storage, and gas-liquid separators. Meanwhile, the low-temperature CO2 system is a masterpiece of modern engineering, comprising a CO2 compressor, condensing evaporator, reservoir, filters, and more. These systems harmonize to deliver an unparalleled cooling experience, ensuring efficiency and safety across all operations.
The Our advanced CO2 gas-liquid separator is expertly crafted to isolate CO2 gas droplets from the evaporator, ensuring the compressor's smooth operation and maintaining stability within the system. This innovation prevents wet strokes, stabilizes liquid levels during operations, and accommodates liquid return when pumps halt. Ingeniously, if not operating, it serves as a reservoir, able to house all CO2 liquid, with an auxiliary evaporator strategically placed to maintain optimal pressure. In this meticulously designed NH3/CO2 system, the condensing evaporator acts dually as an evaporator for NH3 and a condenser for CO2, achieving efficient heat exchange and reliable operation.
2. Advantages of NH3/CO2 Cascade Refrigeration System.
(1) Enhanced Safety with Reduced NH3 Risks:
(1.(1)) The NH3/CO2 cascade system significantly lowers NH3 condensing pressure to just about a tenth of traditional systems, dramatically enhancing safety.
(1.(2)) NH3 is confined to dedicated spaces, akin to a 'tiger in a cage', under the vigilant supervision of skilled professionals, ensuring utmost safety.
(1.(3)) With NH3's superior heat transfer capabilities at higher temperatures, it is optimally used to efficiently cool CO2, maximizing performance.
(2) CO2 as a Safe Cooling Medium: Ideal for personnel-dense areas like operation rooms and warehouses, CO2 ensures the safety and protection of both people and assets.
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Compressor type |
Piston, screw |
Condensor |
enough condenser heat exchanger surface |
Fan type |
Axial fan:High degree of protection, large Air flow, low noise |
Unit kinds |
Open type, box type, side discharge type |
Cooled type |
Air cooled |
Refrigeration type |
R717;R507;R22;CO2 |
Copper tube connector |
fitting reducer |
Place to assemble |
Indoor/out door(concrete construction building/steel
construction building). |
Voltage |
220V/50HZ, 220V/60HZ, 380V/50HZ etc |
Controller |
Automatic electric controller, PLC |
Warranty |
1 Year |
Case material |
The galvanized sheet is coated with plastic powdered painted |
Quality Assurance |
2.6Mpa leak-proof stress test |
Package |
Plywood box and pallet |
As a distinguished manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. offers bespoke solutions crafted meticulously to align with your specific needs. If you are uncertain of the ideal model fit for your requirements, we invite you to reach out to us for expert guidance.Our team boasts a cadre of highly skilled engineers who are dedicated to devising tailored solutions that perfectly meet your demands. Let us create a custom strategy just for you.
Shandong Binzhou Huiyang Cold Chain Logistics Port
This remarkable project spans an impressive 60,542 square meters and boasts a total built-up area of 72,370.31 square meters. It encompasses cutting-edge production workshops and an expansive cold storage area, which alone covers 65,538.50 square meters, all perfectly designed to support efficient cold chain logistics.
Our company proudly specializes in producing top-tier refrigeration equipment, including: High-Efficiency Condensing Units,Advanced Air Coolers,Cutting-Edge Evaporative Condensers,State-of-the-Art Freezers,Durable Cold Room Doors,
Premium Cold Storage Panels, For detailed insights and specifications of our products, don't hesitate to click on the product name or image.

Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011 in the picturesque coastal city of Qingdao, Qingdao Bingyan Refrigeration Equipment Co., Ltd. shines as a beacon of innovation in the realm of industrial and commercial freezing and cold storage solutions. Our expertise encompasses the full spectrum of refrigeration systems, from research and development to design, manufacturing, and sales, making us a distinguished high-tech enterprise.
Since our inception, we have steadfastly adhered to the principles of utilizing 'science and technology' as our guiding light, supported by 'management' as the cornerstone to fulfilling market demand. Customer satisfaction is our utmost priority, as we strive to deliver flawless refrigeration system solutions, superior products, and unparalleled services.
The company proudly holds over ten national technology patents and is perpetually dedicated to the research and development of high-efficiency, environmentally conscious refrigeration system configurations. Our cutting-edge offerings include high-efficiency refrigeration units, energy-saving barrel pumps, and PLC intelligent program control boxes, each designed with the future in mind.
We excel in crafting bespoke program designs and equipment customization for projects such as rapid food quick-freezing storage, versatile cold storage facilities, ultra-low temperature solutions, precise medicine storage, and optimized fruit and vegetable air-conditioning storage. Our expertise extends to workshop air conditioning, rapid freezing, freeze-drying, and specialized thawing devices.
BINGYAN proudly dedicates itself to delivering customers with scientifically sound and perfectly tailored refrigeration system solutions, coupled with top-tier engineering and unparalleled after-sales support.
Bingyan extends a full suite of services spanning sales, design, construction, and dedicated after-sales assistance.
1. The sales department expertly comprehends and accurately discerns customer needs, ensuring precise conveyance of intentions and maintaining seamless communication to foster lasting relationships.
2. The design department offers expert, professional, and practical engineering advice, crafting bespoke and robust refrigeration plans that meet and exceed customer expectations.
3. The engineering department approaches every construction phase with meticulous care, ensuring that each task is executed with precision, striving for excellence in realizing superior quality projects.
4. Our dedicated after-sales department remains on constant alert, ever-ready to secure customer satisfaction and project success.

Q:What's your advantage?
A: Through our professional designers according to your needs for your professional design, and select the appropriate refrigeration equipment. Ultimately, we achieve the purpose of high cooling efficiency, energy saving and power saving.
Q:How strong is your company?
A:Our company was established in 2011 and has a professional cold storage design team, installation team, and experienced after-sales maintenance personnel. We can provide a complete set of cold storage design, installation guidance, and after-sales maintenance services.
Q:Where are you?Can I visit you?
A: Sure,welcome to you visit our factory at any time.
Q:How about the delivery time?
A: Within 60 days after we confirm you requirement.
Q:what kind of payment does your company support?
A:Usually, a 30% down payment is made through T/T after confirming the Proforma Invoice (PI), and the balance will be paid after inspection and before shipment. We accept telegraphic transfer and sight letter of credit.
Q: When can I get the price?
A: Usually we quote within 24 hours after we get your inquiry.
Q: Which shipping way can you provide?
A: We can provide shipping by sea, by air and by express.