NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle of Cascade Refrigeration System
NH3/CO2 cascade refrigeration systems are ingeniously designed with two integral stages: a high-temperature stage utilizing NH3 as the cooling agent and a low-temperature stage employing CO2. In this innovative system, the high-temperature stage evaporates NH3 refrigerant to effectively condense the CO2 refrigerant expelled from the low-temperature stage. The system's critical component, the condensation evaporator, seamlessly integrates the high and low temperature stages, serving dually as the condenser for the low temperature and the evaporator for the high temperature stage.
The heat load is expertly shifted to the CO2 refrigerant via the end evaporator, which then transfers the absorbed heat to the NH3 refrigerant through the condensing evaporator. This high-temperature NH3 refrigerant efficiently moves the collected heat to the condenser, releasing it to the environment with a cooling medium. Once condensed, the CO2 transitions to the CO2 reservoir, advancing to the gas-liquid separator after passing through a dryer filter and throttle valve. The CO2 circulation pump propels liquid CO2 to the evaporator, where it cycles back to the gas-liquid separator, and gaseous CO2 is compressed and reintroduced into the condensing evaporator, perpetuating the entire cascade refrigeration cycle in a seamless loop.
The NH3/CO2 cascade refrigeration system separates its operations into two distinct parts: the high-temperature NH3 system, reminiscent of conventional refrigeration setups but inclusive of compressors, condensers, liquid storage, gas-liquid separators, and throttling devices, and the low-temperature CO2 system, which features a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel. This dual-component system leverages the unique properties of each refrigerant to maximize efficiency and performance.
The The CO2 gas-liquid separator performs a critical role in isolating droplets from CO2 gas within the CO2 compression refrigeration system. This prevents compressor wet strokes, stabilizes liquid levels during pump operation, and retains liquid from the end equipment and pipelines during pump shutdown. If used as a reservoir when idle, the separator's capacity must accommodate all CO2 liquid in the system. Moreover, an auxiliary evaporator atop the separator prevents excessive CO2 pressure post-shutdown. Within the NH3/CO2 cascade system, the condensing evaporator uniquely functions as both the NH3-side evaporator and the CO2-side condenser, facilitating effective heat absorption and CO2 condensation.
2. Advantages of NH3/CO2 Cascade Refrigeration System.
(1) Reduced NH3 Safety Risks:
(1.(1)) The NH3/CO2 cascade system significantly diminishes NH3 refrigerant pressure, to about 1/10th of traditional ammonia systems, enhancing safety and reliability;
(1.(2)) NH3 is confined to machine and equipment rooms, akin to a 'tiger' safely contained in a 'cage', under the vigilant watch of skilled personnel;
(1.(3)) Optimal use of NH3's superior heat transfer capabilities in high-temperature regions to efficiently cool CO2.
(2) CO2 as a refrigerant safely enters populated areas such as single-freezing units and storage facilities, prioritizing the safety of personnel 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 premier manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. excels in tailoring products to meet your specific requirements. If you're uncertain about the ideal model for your needs, simply reach out to us with your queries.Our team boasts several seasoned engineers ready to craft a bespoke solution tailored just for you.
Shandong Binzhou Huiyang Cold Chain Logistics Port
Spanning an expansive area of 60,542 square meters, the Shandong Binzhou Huiyang Cold Chain Logistics Port epitomizes efficient design. The total construction area extends to an impressive 72,370.31 square meters, featuring a production workshop and a vast cold storage area measuring 65,538.50 square meters. This state-of-the-art facility is tailored for optimal performance and seamless operation, making it a cornerstone of innovation and efficiency in the field of cold chain logistics.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., we proudly offer a diverse range of innovative products designed to meet all your cooling and refrigeration needs: State-of-the-Art Condensing Units,High-Performance Air Cooler,Efficient Evaporative Condenser,Advanced Freezer Solutions,Durable Cold Room Doors,
Robust Cold Storage Panels, For a deeper exploration of our extensive product offerings, simply click on the product name or its accompanying picture.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in 2011 in the picturesque coastal city of Qingdao, Qingdao Bingyan Refrigeration Equipment Co., Ltd. stands as a beacon of innovation and expertise. We are a premier high-tech enterprise, seamlessly integrating industrial and commercial freezing, cold storage solutions, cutting-edge refrigeration systems, and state-of-the-art equipment research, design, manufacturing, and sales.
From our very beginning, we have passionately embraced 'science and technology' as the cornerstone of our strategy, while 'management' provides a steadfast guarantee of excellence. Our mission is to meet and exceed market demands by offering unparalleled customer service and delivering impeccable and comprehensive refrigeration system solutions, products, and services.
Proudly holding over ten national technology patents, we are dedicated to the continuous research and development of high-efficiency, energy-saving, and environmentally friendly refrigeration system configurations. Our innovations include high-performance refrigeration units, energy-saving barrel pumps, and intelligent PLC program control boxes, ensuring cutting-edge advancements in the industry.
We specialize in bespoke program design and equipment customization for an array of projects, including quick-freezing food storage, food cold storage, ultra-low temperature cold storage, pharmaceutical storage, air-conditioned storage for fruits and vegetables, workshop air conditioning, quick-freezing, freeze-drying, and advanced thawing devices. Discover the pinnacle of refrigeration technology with us.
At BINGYAN, we are dedicated to offering our clients scientifically backed and meticulously crafted refrigeration system solutions, complemented by our top-tier engineering expertise and exceptional after-sales service.
Bingyan excels in delivering a full spectrum of services, meticulously covering every aspect from sales and design to construction and unparalleled after-sales support.
1. Our sales department is adept at precisely discerning and comprehending customer requirements, ensuring their intentions are accurately conveyed, while fostering seamless and ongoing communication with them.
2. The design department is committed to offering our clients professional, insightful, and personalized engineering recommendations, crafting refrigeration plans that are both dependable and meticulously suited to meet customer demands.
3. Every construction phase is handled with utmost diligence by our engineering department, as they meticulously execute each task, aspiring to achieve perfection and deliver high-quality, exemplary projects.
4. Our after-sales department stands ever ready, ensuring unwavering support to guarantee our customers' ongoing success and satisfaction.
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.
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