NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Ingenious Principle Behind Cascade Refrigeration Systems
The NH3/CO2 cascade refrigeration system is a marvel of engineering, beautifully combining two distinct stages - high and low temperature. At the high temperature stage, NH3 serves as the refrigerant, while CO2 takes the helm at the low temperature stage. The process is elegantly orchestrated as the evaporated NH3 in the high temperature stage condenses the CO2 gas emitted from the low temperature stage. A strategically designed condensation evaporator joins these two facets, functioning as a condenser for the low temperature level and an evaporator for the high temperature level, ensuring seamless integration and efficiency.
In this sophisticated system, the heat load is skillfully transferred to the CO2 refrigerant via the end evaporator. The absorbed heat by CO2 is then adeptly passed to the high-temperature NH3 refrigerant through the condensing evaporator. This high-temperature NH3 refrigerant expertly channels the heat to the high-temperature condenser, where it is gracefully released into the environment via a cooling medium. Post-condensation, CO2 is directed into a CO2 reservoir, before flowing through a dryer filter and throttle valve into a CO2 gas-liquid separator. The liquid CO2 is then efficiently pumped to the CO2 evaporator by the CO2 circulation pump. Completing its journey, the two-phase CO2 returns to the gas-liquid separator, where the gaseous CO2 is drawn in by the compressor, compressed, and returned to the condensing evaporator, perpetuating this harmonious cascade refrigeration cycle.
In the inventive NH3/CO2 cascade refrigeration system, the high and low temperature stages operate as separate refrigeration systems, each with a dedicated refrigerant. The system is divided into two essential components: the high-temperature NH3 refrigeration system, which mirrors a conventional refrigeration setup including a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and throttling device; and the low-temperature CO2 refrigeration system, featuring not only a CO2 compressor but also a condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, all working in symphony for optimized performance.
TheCO2 gas-liquid separator plays a crucial role in the CO2 compression refrigeration system, efficiently separating CO2 gas droplets from the evaporator to prevent compressor wet stroke, maintain a stable liquid level during pump operation, and manage end equipment and pipeline liquid returns during pump halts. When used as a CO2 reservoir during downtime, it is designed to accommodate the entire system's CO2 liquid volume. Additionally, an auxiliary evaporator is strategically installed atop the gas-liquid separator to manage CO2 pressure post-shutdown. In the remarkable NH3/CO2 cascade system, the condensing evaporator serves dual purposes - as the NH3 side evaporator and the CO2 side condenser, where the compound liquid evaporates and absorbs heat within tubes, simultaneously condensing carbon dioxide gas into liquid within the shell, epitomizing efficiency and innovation.
2. Unveiling the Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Minimizing NH3-Related Hazards:
(1.(1)) The NH3/CO2 cascade refrigeration system significantly lowers NH3 refrigerant charge condensing pressure to just about 1/10th of what is seen in conventional ammonia systems;
(1.(2)) NH3 is meticulously confined to designated machine rooms and equipment areas, akin to a 'tiger' securely 'caged', continuously monitored by expert technical personnel;
(1.(3)) The system brilliantly capitalizes on NH3's exceptional heat transfer properties in high-temperature regions to effectively cool CO2.
(2) CO2 acts as a safe medium for personnel-dense operational areas (such as single-freezing units) and warehouses, safeguarding both human and asset integrity.
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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, we pride ourselves on our ability to tailor products precisely to your needs. Should you be uncertain about the ideal model for your requirements, feel free to reach out to us—our expert team is here to assist you every step of the way.With a team of seasoned professional engineers at your service, we are ready to craft a bespoke solution that perfectly aligns with your unique demands.
Shandong Binzhou Huiyang Cold Chain Logistics Port
This impressive project spans a vast area of 60,542 square meters, with a total construction space of 72,370.31 square meters. Within this space, it includes a state-of-the-art production workshop and an expansive cold storage area covering 65,538.50 square meters, designed to optimize efficiency and storage capacity.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., our premier products include State-of-the-art Condensing Units,High-Efficiency Air Coolers,Advanced Evaporative Condensers,Top-Quality Freezers,Durable Cold Room Doors,
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Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is nestled in the stunning coastal city of Qingdao. Our company is a comprehensive high-tech enterprise that seamlessly integrates research, design, manufacturing, and sales of industrial and commercial freezing and cold storage solutions, as well as advanced refrigeration systems and equipment.
From the very beginning, Qingdao Bingyan has been guided by the power of innovation and technology. We place management excellence at the forefront to consistently meet the evolving market demands. Our mission is to deliver impeccable refrigeration system solutions and extraordinary customer service, all while achieving product and service excellence.
With a portfolio boasting over ten national technology patents, we are steadfastly committed to developing high-efficiency and energy-saving refrigeration solutions. Our product line includes advanced refrigeration units, eco-friendly configurations, and intelligent PLC program control systems, all designed to pioneer energy conservation and environmental responsibility.
Our expertise lies in the custom design and configuration of equipment for diverse applications, including rapid food freezing storage, cold storage for pharmaceuticals, ultra-low temperature preservation, air-conditioned storage for fruits and vegetables, as well as workshop air conditioning. We also specialize in quick-freezing, freeze-drying, and thawing device technologies.
At BINGYAN, we are passionately committed to offering our esteemed customers scientifically designed and logically sound refrigeration system solutions. Alongside, we deliver unmatched engineering excellence and comprehensive after-sales services, ensuring that our solutions are not only top-notch but also reliable and tailored to meet your every need.
Bingyan proudly offers an all-encompassing array of services that include proficient sales strategies, innovative design solutions, meticulous construction processes, and unparalleled after-sales support, all crafted to ensure complete customer satisfaction.
1. Our dedicated sales department excels at capturing and understanding the nuanced needs of our clients, effectively conveying these insights and maintaining an open channel of communication to ensure a seamless and effective exchange of information.
2. The design department is equipped with a team of experts providing clients with professional, insightful, and customized engineering advice. We meticulously craft reliable and stable refrigeration plans, tailored specifically to align with the unique requirements of each client.
3. Our engineering department is dedicated to precision and attentiveness, treating each construction phase with utmost importance. By meticulously handling each task, we strive to achieve unparalleled excellence, ultimately crafting superior-quality projects that stand the test of time.
4. Our after-sales department is perpetually ready and equipped to respond at a moment's notice, wholeheartedly devoted to ensuring the ongoing success and satisfaction of our valued customers.
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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