NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Ingenious Principle of the Cascade Refrigeration System
The NH3/CO2 cascade refrigeration system is a marvel of engineering, comprising two distinct stages: the high-temperature stage powered by NH3 and the low-temperature stage where CO2 reigns supreme. In this symbiotic system, the evaporation of NH3 refrigerant at the high temperature level serves a crucial purpose—condensing the CO2 gas released from the low temperature level. A condensation evaporator acts as the bridge between these two stages, doubling as a condenser for the low temperature and an evaporator for the high temperature, ensuring seamless operation and maximum efficiency.
In this sophisticated process, the heat load is initially carried to the end evaporator, where CO2 refrigerant takes over. The absorbed heat is then transferred to the high-temperature NH3 refrigerant via the condensing evaporator. This heat is finally dispelled into the environment through the high-temperature condenser with the help of a cooling medium. The condensed CO2 flows into the CO2 reservoir before moving through a dryer filter and throttle valve to the CO2 gas-liquid separator. Liquid CO2 is propelled by a circulation pump to the CO2 evaporator. Without end cooling devices, such as single freezers, the two-phase CO2 travels back to the gas-liquid separator, where the gaseous CO2 is drawn in by the compressor, compressed, and cycled back into the condensing evaporator. This rhythmic cycle ensures a continuous cascade refrigeration process.
The NH3/CO2 cascade refrigeration system ingeniously separates high and low temperature levels into individual systems using single refrigerants. The high-temperature NH3 system mirrors conventional refrigeration systems, featuring not only a refrigeration compressor but also a condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 system comprises a CO2 compressor, a condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and an expansion vessel, each playing a vital role in this advanced cooling solution.
The The CO2 gas-liquid separator plays an essential role within the CO2 compression refrigeration system, expertly isolating droplets from the CO2 gas post-evaporation to prevent compressor wet strokes. This device ensures a consistent liquid level during pump operation and accommodates liquid return from equipment and pipelines when the pump halts. If used as a reservoir during downtime, the separator must accommodate the entire system's CO2 liquid. Additionally, an auxiliary evaporator is recommended at the top to stave off excessive CO2 pressure after shutdown. Within the NH3/CO2 cascade system, the condensing evaporator serves dual purposes, operating as both an evaporator on the NH3 side and a condenser on the CO2 side, where compound liquid evaporates, absorbing heat, while CO2 gas transitions into liquid within the shell.
2. Unveiling the Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Enhanced Safety Features with Reduced NH3 Risks:
(1.(1)) The NH3/CO2 cascade refrigeration system dramatically minimizes the NH3 refrigeration medium's condensing pressure, reducing it to about 1/10 of that in traditional ammonia refrigeration systems.
(1.(2)) NH3 confinement to the machine and equipment rooms ensures it remains securely managed like a "tiger in a cage," under the vigilant supervision of skilled technicians.
(1.(3)) This system maximizes NH3's superior heat transfer properties in high-temperature regions to efficiently cool CO2.
(2) Safety in Personnel-Rich Areas: CO2 as a Refrigerant in Operations Rooms (e.g., Single-Freezing Machines) and Warehouses
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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. is dedicated to crafting bespoke solutions tailored to your specific needs. If you’re unsure of which model perfectly suits your requirements, feel free to reach out to us with your queries.Our team of expert engineers is ready to design a customized solution just for you, ensuring that your unique demands are met with precision and efficiency.
Shandong Binzhou Huiyang Cold Chain Logistics Port
Spanning across a substantial area of 60,542 square meters, this remarkable project boasts a total construction footprint of 72,370.31 square meters. Within its expansive confines, you'll find a state-of-the-art production workshop and an immense cold storage area covering 65,538.50 square meters, all designed to meet the highest standards of efficiency and safety.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., we proudly specialize in crafting superior-quality refrigeration solutions. Our core offerings include: High-Efficiency Condensing Units,Robust Air Coolers,Advanced Evaporative Condensers,State-of-the-Art Freezers,Premium Cold Room Doors,
Durable Cold Storage Panels, For an in-depth look into our extensive product lineup, simply click on the product name or its image. Discover the perfect solution tailored to your specific refrigeration needs.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in the picturesque coastal city of Qingdao in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. stands as a premier high-tech enterprise. We specialize in the comprehensive collection of industrial and commercial freezing solutions, cold storage, and refrigeration systems. Our expertise spans from innovative research and development, through meticulous design and manufacturing, to the seamless sales of cutting-edge refrigeration equipment.
Since our inception, we have been steadfast in our commitment to 'science and technology' as our guiding principle, and 'management' as our assurance. Our mission is to meet market demands and exceed customer expectations by offering exemplary refrigeration system solutions, products, and services.
Our company proudly holds over ten national technology patents. We are dedicated to the perpetual pursuit of high-efficiency, energy-saving, and environmentally friendly refrigeration system configurations. Our offerings include sophisticated high-efficiency refrigeration units, energy-saving barrel pumps, and PLC intelligent program control boxes, all designed to advance industry standards.
We excel in tailor-made program designs and equipment customization for a diverse array of projects. These include food quick-freezing storage, food cold storage, ultra-low temperature cold storage, pharmaceutical storage, and fruit and vegetable air-conditioning storage. Our expertise extends to workshop air conditioning, quick-freezing and freeze-drying, and thawing devices, ensuring that our solutions are as varied as they are precise.
BINGYAN IS DEDICATED TO DELIVERING CUTTING-EDGE REFRIGERATION SYSTEM SOLUTIONS THAT ARE BOTH SCIENTIFICALLY SOUND AND EXCEPTIONALLY EFFICIENT. WE PRIDE OURSELVES ON OFFERING SUPERIOR ENGINEERING SERVICES AND UNPARALLELED AFTER-SALES SUPPORT TO ENHANCE CUSTOMER SATISFACTION.
Bingyan offers an all-encompassing service portfolio that includes expert sales, innovative design, meticulous construction, and unrivaled after-sales service.
1. Our sales department excels at discerning and interpreting customer needs, ensuring a precise relay of customer goals, and maintaining seamless and effective communication throughout the entire process.
2. The design department provides expert consultation, offering customers robust and tailored engineering solutions that align with their specific refrigeration needs for optimal stability and reliability.
3. Our engineering department approaches each construction phase with diligence and precision, aiming for perfection in every task to deliver outstanding project quality and superior craftsmanship.
4. The after-sales department remains vigilant and prepared, committed to guaranteeing customer success and satisfaction at every stage.
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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