NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle of Cascade Refrigeration System
The NH3/CO2 cascade refrigeration system is ingeniously crafted with two distinct stages: the high-temperature stage, utilizing NH3 as the refrigerant, and the low-temperature stage, employing CO2 as the refrigerant. In this groundbreaking system, NH3 evaporates in the high-temperature stage to efficiently condense the CO2 gas discharged from the low-temperature stage. A sophisticated condensation evaporator artfully bridges these stages, serving dually as both the condenser for the low-temperature stage and the evaporator for the high-temperature stage.
In this state-of-the-art system, heat load is transferred to the CO2 refrigerant via the terminal evaporator. Here, the heat absorbed by CO2 is seamlessly handed over to the high-temperature NH3 refrigerant, which then elegantly transfers this heat to the high-temperature condenser, releasing it into the environment through a cooling medium. The condensed CO2 from the condensing evaporator flows into the CO2 reservoir, subsequently moving through the dryer filter and throttle valve into the CO2 gas-liquid separator. The liquid CO2 is propelled to the CO2 evaporator using a CO2 circulation pump, bypassing the end-cooling device, like a single freezer or chiller. Post-evaporation, the two-phase CO2 returns to the gas-liquid separator, while the gaseous CO2 is drawn by the compressor for compression back into the condensing evaporator. This cycle perpetuates to complete the unparalleled cascade refrigeration process.
In the NH3/CO2 cascade refrigeration system, both high and low-temperature levels operate as standalone refrigeration systems, each utilizing a singular refrigerant. The high-temperature NH3 system mirrors a conventional refrigeration framework, inclusive of a compressor, condenser, liquid storage, gas-liquid separator, and a throttling device. Meanwhile, the low-temperature CO2 system is meticulously equipped with a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and an expansion vessel, ensuring optimal performance and reliability.
The The CO2 gas-liquid separator is pivotal in isolating CO2 gas droplets from the evaporator within the CO2 compression refrigeration system. This ensures the wet stroke of the compressor is avoided, maintains a stable liquid level during pump operation, and accommodates the return of liquid in end equipment and pipelines when the pump halts. If the gas-liquid separator functions as a CO2 reservoir during inactivity, its volume must be sufficient to contain all the CO2 liquid in the system. Additionally, an auxiliary evaporator atop the gas-liquid separator effectively prevents excessive CO2 pressure post-shutdown. In the NH3/CO2 cascade refrigeration system, the condensing evaporator plays a dual role: as the evaporator on the NH3 side and the condenser on the CO2 side, where compound liquid evaporates within the tube, and carbon dioxide gas is masterfully condensed into liquid in the shell.
2. Advantages of the NH3/CO2 Cascade Refrigeration System.
(1) Significantly Reduced NH3 Hazards:
(1.(1)) The NH3/CO2 cascade refrigeration system markedly diminishes the condensing pressure of the NH3 refrigerant charge, achieving an impressive reduction to about 1/10th of the traditional ammonia refrigeration system charge.
(1.(2)) NH3 is securely confined within the machine room and equipment room, akin to a 'tiger' within a 'cage,' under the vigilant supervision of professional and technical personnel.
(1.(3)) Maximizes the superior heat transfer properties of NH3 in the high-temperature region, effectively cooling CO2.
(2) CO2 serves as a reliable medium in personnel-intensive operational areas, such as single-freezing machines and warehouses, ensuring utmost safety for personnel and property.
1d217483
| 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 proud manufacturer, we offer unparalleled customization to meet your unique specifications. Unsure which model aligns perfectly with your needs? Simply reach out to us, and we'll guide you every step of the way.Our team of skilled engineers is at your service, ready to craft personalized solutions that cater specifically to your requirements. Let us bring your vision to life with precision and expertise.
Location: Shandong Binzhou Huiyang Cold Chain Logistics Port
Project Overview: Spanning an impressive area of 60,542 square meters, with a total construction expanse of 72,370.31 square meters, this cutting-edge project encompasses a production workshop and a vast cold storage area, which alone measures 65,538.50 square meters. This facility is a testament to our innovative prowess and commitment to delivering state-of-the-art solutions.
Our company is proud to offer an impressive array of industry-leading products, including: State-of-the-Art Condensing Units,High-Performance Air Coolers,Advanced Evaporative Condensers,Efficient Freezers,Precision-Engineered Cold Room Doors,
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Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is nestled in the picturesque coastal city of Qingdao. This high-tech enterprise brilliantly integrates the spheres of industrial and commercial freezing and cold storage. With expertise in refrigeration systems, our company excels in the research and development, design, manufacturing, and sales of advanced refrigeration equipment.
From its inception, the company has unwaveringly embraced 'science and technology' as its guiding light, and 'management' as its cornerstone, diligently striving to meet market demands. Our ultimate goal is to provide impeccable refrigeration system solutions, products, and services that perfectly satisfy our customers' needs.
Proudly holding more than ten national technology patents, the company is consistently dedicated to the research and development of highly efficient, energy-saving, and environmentally friendly refrigeration system configurations. Our innovative offerings include high-efficiency refrigeration units, energy-saving barrel pumps, and PLC intelligent program control boxes, among others.
Our expertise primarily lies in the program design and equipment customization for a variety of projects encompassing food quick-freezing storage, food cold storage, ultra-low temperature cold storage, medicine storage, fruit and vegetable air-conditioning storage, workshop air conditioning, quick-freezing and freeze-drying, and advanced thawing devices.
BINGYAN IS DEDICATED TO DELIVERING SCIENTIFIC AND OPTIMIZED REFRIGERATION SYSTEM SOLUTIONS WITH A FOCUS ON SUPERIOR ENGINEERING AND EXEMPLARY AFTER-SALES SERVICES.
Bingyan offers a full spectrum of services that includes sales, design, construction, and dedicated after-sales service, ensuring a seamless customer experience.
1. Our sales department excels in thoroughly understanding and capturing customer requirements, effectively conveying client intentions, while maintaining proactive and nurturing communication with each customer.
2. The design department delivers expert and thoughtful engineering suggestions, crafting bespoke and dependable refrigeration plans tailored to the distinct needs of our clients.
3. The engineering department approaches each construction task with precision and dedication, meticulously completing every stage to achieve unparalleled excellence and deliver superior quality projects.
4. Our after-sales department is perpetually prepared and vigilant, committed to ensuring our customers' success with unwavering support.
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.
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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.
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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.
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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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