NH3/CO2 Cascade Refrigeration System
1. The Principle of NH3/CO2 Cascade Refrigeration System
NH3/CO2 Cascade Refrigeration System is ingeniously designed with a two-tier mechanism: high temperature and low temperature stages. The high temperature stage utilizes NH3 as the refrigerant, while the low temperature stage operates with CO2. In this system, the evaporative qualities of NH3 in the high temperature stage are harnessed to condense the CO2 gas from the low temperature stage effectively. A condensation evaporator serves as a critical link between these stages, functioning dually as the low temperature condenser and the high temperature evaporator, ensuring seamless thermal exchange and system efficiency.
In this advanced system, the heat load is effectively transferred to the CO2 refrigerant through the end evaporator. This absorbed heat is then conveyed to the high-temperature NH3 refrigerant via the condensation evaporator, facilitating heat transfer to the high-temperature condenser, where it dissipates into the environment with the help of a cooling medium. The condensed CO2 is channeled into a CO2 reservoir, followed by a journey through a dryer filter and throttle valve into the CO2 gas-liquid separator. The liquid CO2 circulates to the CO2 evaporator via the CO2 circulation pump. Post-evaporation, the two-phase CO2 returns to the separator, and the gaseous CO2 is compressed back into the condensing evaporator by the compressor, perpetuating the efficient cascade refrigeration cycle.
NH3/CO2 Cascade Refrigeration System divides its components into two distinct refrigeration systems, each using a single refrigerant. The high-temperature NH3 system mirrors conventional refrigerant systems, comprising a compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low temperature CO2 system features a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, creating a comprehensive and efficient setup.
The In the CO2 compression refrigeration system, the gas-liquid separator plays a pivotal role by segregating CO2 gas droplets from the evaporator, thereby ensuring compressor safety and maintaining a stable liquid level during pump operation. It also provides a reservoir for end equipment and pipeline liquid return upon pump shutdown. If used as a CO2 reservoir, its volume must accommodate the entire system’s CO2 liquid. An auxiliary evaporator is installed atop the separator to prevent excessive CO2 pressure post-shutdown. Within the NH3/CO2 cascade system, the condensing evaporator acts simultaneously as the NH3 side evaporator and CO2 side condenser, efficiently facilitating compound liquid evaporation and CO2 gas condensation.
2. Advantages of NH3/CO2 Cascade Refrigeration System
(1) Enhanced Safety by Reducing NH3 Hazards:
(1.(1)) The NH3/CO2 Cascade System significantly minimizes NH3 refrigerant charge pressure, reducing it to approximately 1/10th of traditional ammonia systems, advancing safety standards.
(1.(2)) NH3 is securely confined within specific machine rooms and equipment areas, akin to a 'tiger in a cage,' ensuring safety under the vigilant eyes of skilled professionals.
(1.(3)) The system fully exploits NH3's excellent heat transfer properties in high-temperature regions to efficiently cool CO2.
(2) CO2 as an Ideal Medium: CO2 safely enters high-traffic operational areas and warehouse spaces, guaranteeing safety for personnel and valuable 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 distinguished manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. proudly offers tailored Electric Drive Cold Storage Solutions with High-Performance Refrigeration Equipment to suit your specific needs. If you're uncertain which model aligns perfectly with your requirements, we invite you to reach out to us with your inquiries.Our team comprises several highly skilled and professional engineers, ready to craft a bespoke solution uniquely designed for you.
Shandong Binzhou Huiyang Cold Chain Logistics Port
This expansive project spans an impressive 60,542 square meters, boasting a total built-up area of 72,370.31 square meters. It includes a state-of-the-art production workshop and a vast cold storage area that covers 65,538.50 square meters, designed to meet your most demanding logistics needs.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. proudly offers a diverse array of exceptional products, including: State-of-the-Art Condensing Units,Efficient Air Coolers,Innovative Evaporative Condensers,Advanced Freezers,Robust Cold Room Doors,
Durable Cold Storage Panels, Eager to explore more of our products? Simply click on the product name or picture to discover additional details.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in the enchanting coastal city of Qingdao, Qingdao Bingyan Refrigeration Equipment Co., Ltd. commenced its journey in 2011. As a distinguished high-tech enterprise, we seamlessly integrate industrial and commercial freezing solutions, from cold storage and refrigeration systems to cutting-edge refrigeration equipment. Our expertise spans research and development, meticulous design, manufacturing, and strategic sales.
From the very beginning, our company has anchored its operations in the realm of 'science and technology' as our guiding beacon, with 'management' as our steadfast foundation. We dedicate ourselves to addressing market demands and ensuring unparalleled customer service. Our ultimate mission is to deliver impeccable refrigeration system solutions, alongside exceptional products and services, that consistently exceed customer expectations.
Our company proudly boasts a portfolio of over ten esteemed national technology patents. We are deeply invested in the ongoing research and development of high-efficiency, energy-saving, and environmentally conscious refrigeration systems. Our offerings include advanced refrigeration units, energy-efficient barrel pumps, and sophisticated PLC intelligent program control boxes, all crafted to elevate industry standards.
Our expertise lies in the specialized program design and bespoke equipment customization for a diverse range of projects. These include rapid food freezing storage solutions, premium food cold storage, ultra-low temperature cold storage, pharmaceutical storage, and climate-controlled storage for fruits and vegetables. Beyond this, we excel in creating optimized environments for workshop air conditioning, rapid freezing, freeze-drying, and innovative thawing devices.
At BINGYAN, we dedicate ourselves to delivering customers nothing short of excellence with our scientifically engineered and meticulously crafted refrigeration system solutions. Alongside our top-tier engineering, we provide unparalleled after-sales services that set us apart.
Bingyan doesn't just offer products; we provide an all-encompassing service experience, seamlessly integrating sales, design, construction, and unwavering after-sales support.
1. Our sales department excels in discerning customer needs, ensuring that every intention is clearly understood and conveyed. We pride ourselves on maintaining consistent and open communication, fully attuned to client aspirations.
2. With our design department, you're not just getting a service, but a partnership for success. We bring forth expert engineering insights, crafting bespoke refrigeration plans that are both reliable and stable, perfectly aligned with your specific requirements.
3. Our engineering department approaches each construction process with a meticulous eye for detail, ensuring that every task is executed with precision. We are relentless in our pursuit of perfection, delivering projects of unsurpassed quality.
4. The after-sales department remains perpetually prepared, ensuring that our customers' triumphs are our own. With Bingyan, you're never alone.
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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