NH3/CO2 cascade refrigeration system
1. NH3/CO2: The Ingenious Principle of the Cascade Refrigeration System
NH3/CO2, the cascade refrigeration system ingeniously integrates two distinct stages: the high temperature stage, powered by NH3 as the refrigerant, and the low temperature stage, driven by CO2. The marvel of this system lies in its efficient use of NH3's evaporation in the high-temperature stage to condense the CO2 gas emitted from the low-temperature stage. These stages are harmoniously linked through a condensation evaporator, acting dually as the low-temperature condenser and the high-temperature evaporator.
In this sophisticated system, heat load is elegantly transferred to the CO2 refrigerant via the end evaporator. The CO2 refrigerant, having absorbed heat, transfers this energy to the high-temperature NH3 refrigerant through the condensing evaporator. The NH3 refrigerant then skillfully releases this heat to the environment via the high-temperature condenser and cooling medium. Post-condensation, CO2 enters the reservoir and proceeds through a dryer filter and throttle valve into the CO2 gas-liquid separator. The CO2 circulation pump then propels the liquid to the evaporator, initiating a cycle where two-phase CO2 returns to the gas-liquid separator, while the gaseous CO2 is seamlessly compressed back into the condensing evaporator, completing the cycle with impressive efficiency.
In the NH3/CO2 cascade refrigeration system, the high and low temperature levels stand as independent refrigeration systems, each dedicated to a single refrigerant. The high-temperature NH3 refrigeration system mirrors conventional refrigeration setups, comprising a compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 system boasts its own compressor, alongside a condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, forming an integrated and efficient whole.
The CO2 gas-liquid separator operates with precision, efficiently segregating CO2 gas droplets from the evaporator within the CO2 compression refrigeration system. This ensures the compressor avoids wet strokes and maintains stability during pump operation. It also safely stores return liquids during pump halts. When used as a reservoir, its capacity should accommodate the entire system's CO2 liquid. Additionally, an auxiliary evaporator atop the separator prevents CO2 pressure spikes post-shutdown. In the NH3/CO2 cascade system, the condensing evaporator performs dual roles, both as the NH3 side evaporator and the CO2 side condenser, where compound liquid evaporates, absorbing heat, while CO2 gas transitions into a liquid state.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Enhanced Safety by Reducing NH3 Risk Factors:
(1.(1)) The NH3/CO2 cascade system significantly lowers NH3 condensing pressure to just about 1/10th of that in traditional ammonia systems, ensuring heightened safety.
(1.(2)) NH3 is confined strictly to the machine and equipment rooms, akin to a 'tiger' securely caged, under expert supervision.
(1.(3)) This system capitalizes on NH3's excellent thermal conductivity in high-temperature regions, optimizing the cooling process for CO2.
(2) CO2's Safe Integration: CO2 serves as a safer medium in spaces bustling with personnel, such as single-freezing machines and warehouses, safeguarding both human lives 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 |
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., we pride ourselves on our ability to craft bespoke refrigeration solutions tailored to your exact needs. As a distinguished manufacturer, we offer the flexibility to customize our products to meet your specific requirements. Unsure about which model suits your purpose best? Simply reach out to us, and we will guide you to the perfect choice.Our team of seasoned engineers is at your service, ready to devise a customized solution that precisely aligns with your business needs. Entrust us with your specifications, and our experts will deliver a tailored refrigeration system designed to optimize your operations.
Shandong Binzhou Huiyang Cold Chain Logistics Port: Bringing Precision and Excellence in Refrigeration Solutions
This ambitious project spans an impressive 60,542 square meters, featuring a meticulously designed construction area totaling 72,370.31 square meters. It includes a state-of-the-art production workshop and a vast cold storage area encompassing 65,538.50 square meters, demonstrating our commitment to delivering top-tier industrial refrigeration solutions tailored for expansive cold storage needs.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., we pride ourselves on a diverse array of core product offerings: High-efficiency Condensing Units,Advanced Air Coolers,State-of-the-art Evaporative Condensers,Premium Freezers,Robust Cold Room Doors,
Durable Cold Storage Panels, To explore additional products and discover more, kindly click on the detailed product name or image to unlock a wealth of information about our extensive range.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in 2011 and nestled in the picturesque coastal city of Qingdao, Qingdao Bingyan Refrigeration Equipment Co., Ltd. stands as a beacon of innovation in the realm of industrial and commercial refrigeration. As a high-tech enterprise, we are a powerhouse of invention, seamlessly integrating research, development, design, manufacturing, and sales of state-of-the-art freezing and cold storage systems, along with cutting-edge refrigeration equipment.
Since our inception, we have unwaveringly adhered to a philosophy of 'science and technology' as our guiding light. Management excellence serves as our steadfast guarantee to fulfill market demands and provide unparalleled customer service. Our ultimate goal is to deliver impeccable refrigeration system solutions, premier products, and exceptional services to our valued clientele.
Proud holders of over ten national technology patents, we are perpetually committed to pioneering research and development efforts that yield high-efficiency, energy-saving, and eco-friendly refrigeration systems. Our expertise encompasses the crafting of high-performance refrigeration units, energy-efficient barrel pumps, and PLC intelligent program control boxes, among other advanced innovations.
We specialize in the meticulous program design and bespoke equipment customization for a diverse array of projects. Our expertise spans 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, as well as thawing devices. Each project is tailored to exacting specifications, ensuring optimal performance and satisfaction.
At BINGYAN, we are unwavering in our dedication to offering customers scientifically advanced and meticulously crafted refrigeration system solutions. We pride ourselves on delivering top-tier engineering excellence and unparalleled after-sales service.
Bingyan stands out by offering a full spectrum of services, encompassing every aspect from initial sales and expert design to flawless construction and dedicated after-sales support.
1. Our sales department excels at precisely understanding and capturing customer needs, ensuring clear and accurate communication of customer intentions while fostering close and seamless interactions.
2. Our design department is committed to providing you with expert engineering advice, carefully crafting reliable and stable refrigeration plans that are tailored specifically to your unique requirements.
3. The engineering department approaches every construction task with precision and dedication, meticulously executing each step to achieve exceptional quality in every project we undertake.
4. Our after-sales department is perpetually prepared and on alert to guarantee your success, ensuring seamless support whenever needed.
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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