Introducing the NH3/CO2 Cascade Refrigeration System
1. NH3/CO2 Cascade Refrigeration: The Ingenious Principle Behind It
Transform your refrigeration capabilities with the NH3/CO2 cascade system, expertly engineered with two distinct stages: a high-temperature stage powered by NH3 and a low-temperature stage utilizing CO2. Within this revolutionary system, the NH3 refrigerant in the high-temp stage cools and condenses the CO2 refrigerant gas emitted from the low-temp stage. A specialized condensation evaporator seamlessly connects these stages, acting both as the low-temp condenser and the high-temp evaporator, ensuring optimal performance and efficiency.
Experience unparalleled heat transfer excellence as the system directs thermal loads to the CO2 refrigerant via the end evaporator. The CO2, in turn, transfers absorbed heat to the high-temp NH3 refrigerant via the condensing evaporator. Subsequently, the NH3 refrigerant divests this heat into the environment through a high-temp condenser. Condensed CO2 travels to the CO2 reservoir, progressing through a dryer filter and throttle valve to the gas-liquid separator. Liquid CO2 then heads to the CO2 evaporator via a circulation pump, entering a cycle that guarantees comprehensive refrigeration efficacy.
In the NH3/CO2 cascade system, high and low temperature levels operate as distinct single refrigerant systems. On the NH3 side, the configuration aligns with classic refrigeration systems, encompassing compressors, condensers, liquid storage, and more. Meanwhile, the CO2 system boasts unique elements like condensing evaporators and expansion vessels, each meticulously crafted for superior refrigeration solutions.
The The CO2 gas-liquid separator is pivotal, ensuring the separation of CO2 droplets from the evaporator, thereby safeguarding the compressor from wet strokes and maintaining stability during liquid returns. When idle, it effectively stores CO2, and with its auxiliary evaporator, it prevents pressure spikes post-shutdown. This dual functionality, as both NH3 side evaporator and CO2 side condenser, epitomizes the innovative design and safety of the NH3/CO2 cascade system.
2. Unveiling the Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Enhanced Safety with Reduced NH3 Risks:
(1.(1))The NH3/CO2 system revolutionizes safety by significantly lowering NH3 condensing pressure to a mere fraction of traditional systems, around 1/10 of conventional charges.
(1.(2))NH3 is securely contained within the machine room, akin to a 'tiger' within its 'cage', constantly monitored by expert personnel for maximum safety.
(1.(3))Leverage NH3's exceptional heat transfer properties in the high-temp zone to effectively cool CO2, enhancing system performance.
(2) CO2 as a safe medium empowers personnel-intensive areas, such as single-freezing units and warehouses, ensuring the utmost safety for both people and property.
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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 premier manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. offers bespoke solutions tailored precisely to your needs. If you are uncertain about the ideal model for your requirements, simply reach out to us. Our dedicated team is here to guide you.Our team of experienced engineers is ready to craft a personalized solution just for you. With expertise and precision, we are committed to delivering a tailored refrigeration system that meets your specific demands.
Shandong Binzhou Huiyang Cold Chain Logistics Port
The expansive project boasts an impressive area spanning 60,542 square meters, with a total construction area reaching 72,370.31 square meters. This includes an advanced production workshop and a vast cold storage facility covering 65,538.50 square meters, designed to optimize efficiency and accommodate a wide array of refrigeration needs.
Our company's main products are crafted to deliver excellence in every aspect of refrigeration technology. These include: Condensing units,Air Cooler,Evaporative condenser,Freezer,Cold Room Doors,
Cold storage panels, For those eager to explore more about our products, simply click on the product name or picture to unlock a world of superior refrigeration solutions.

Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is nestled in the picturesque coastal city of Qingdao. As a high-tech enterprise, we integrate industrial and commercial freezing, cold storage solutions, and cutting-edge refrigeration systems. Our expertise spans research, development, design, manufacturing, and sales, offering holistic solutions in the refrigeration equipment domain.
From the beginning, Qingdao Bingyan has embraced a technology-driven approach, with 'science and technology' as our guiding star and 'management' as our cornerstone. Our mission is to fulfill market demands and exceed customer expectations by delivering impeccable refrigeration system solutions, products, and services.
With over ten national technology patents under our belt, we are steadfastly dedicated to the pursuit of innovation. Our focus is on developing high-efficiency, energy-saving, and environmentally friendly refrigeration systems. Key offerings include advanced refrigeration units, energy-saving barrel pumps, and sophisticated PLC intelligent program control boxes, ensuring superior performance.
Our specialization lies in the design and customization of refrigeration projects. We cater to a diverse array of applications, such as food quick-freezing storage, food cold storage, ultra-low temperature cold storage, and medicine storage. Additionally, we offer solutions for fruit and vegetable air-conditioning storage, workshop air conditioning, quick-freezing and freeze-drying, and thawing devices.
At BINGYAN, we are dedicated to delivering top-tier, scientifically sound, and meticulously crafted refrigeration system solutions. Our promise extends to offering unparalleled engineering support and exceptional after-sales service, ensuring your satisfaction every step of the way.
Bingyan offers a holistic suite of services encompassing sales, innovative design, expert construction, and reliable after-sales support, all tailored to exceed your expectations.
1. Our sales department possesses the expertise to precisely comprehend and meet your specific needs, ensuring flawless communication and an unwavering understanding of your intentions.
2. The design department is committed to providing you with cutting-edge engineering insights, crafting bespoke and robust refrigeration plans that are precisely aligned with your unique requirements.
3. Our engineering department approaches each construction phase with meticulous attention to detail, completing each task with precision. We strive for nothing less than excellence in delivering high-caliber projects.
4. Our after-sales department is perpetually prepared to assist, ensuring your continuous success and satisfaction at all times.

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.