NH3/CO2 Cascade Refrigeration System
1. The Principle of NH3/CO2 Cascade Refrigeration System
The NH3/CO2 cascade refrigeration system is an innovative dual-stage cooling solution. It comprises two distinct temperature phases: a high-temperature stage utilizing ammonia (NH3) as the refrigerant, and a low-temperature stage employing carbon dioxide (CO2). In this sophisticated setup, NH3 evaporates in the high-temperature zone, effectively condensing the CO2 gas emitted from the low-temperature phase. A dual-purpose condensation evaporator ingeniously bridges these temperature stages, acting dually as the low-temperature condenser and the high-temperature evaporator.
This system transfers the heat load to the CO2 refrigerant via the terminal evaporator. The absorbed heat by CO2 passes seamlessly to the high-temperature NH3 refrigerant through the condensing evaporator. Subsequently, the NH3 refrigerant releases this heat to the environment via a high-temperature condenser. The cooled CO2 then moves into the CO2 reservoir, subsequently migrating to the CO2 gas-liquid separator through a dryer filter and throttle valve. Within the CO2 evaporator, the liquid undergoes cooling again, circulating back to the separator. The compressor then absorbs and condenses the CO2 gas into the condensing evaporator, perpetuating this cycle for an efficient cascade refrigeration operation.
In the NH3/CO2 cascade refrigeration configuration, each temperature stage functions with a single refrigerant. Comprising two distinct sections, the high-temperature NH3 refrigeration system parallels conventional systems, inclusive of a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 system features a condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, ensuring comprehensive cooling capabilities.
TheCO2 gas-liquid separator is an essential component that effectively isolates CO2 gas droplets from the evaporator within the CO2 compression refrigeration system. This crucial function prevents compressor wet strokes, stabilizes the liquid level during pump operation, and safeguards the end equipment and piping from liquid return when the pump halts. As an auxiliary reservoir for CO2 when inactive, it must accommodate the entire system's CO2 liquid volume. An auxiliary evaporator atop the separator prevents excessive CO2 pressure post-shutdown. The NH3/CO2 system's condensing evaporator ingeniously dual-functions as both the NH3-side evaporator and CO2-side condenser, where compound liquid vaporizes to absorb heat, while CO2 gas condenses into a liquid.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Enhanced Safety with Reduced NH3 Risks:
(1.1) The NH3/CO2 system dramatically diminishes NH3 condensing pressure, reducing the refrigerant charge to just 10% of traditional systems.
(1.2) NH3 remains confined to machine and equipment rooms, akin to a 'tiger in a cage,' safeguarded by skilled professionals.
(1.3) The system maximizes NH3's exceptional heat transfer properties in high-temperature regions, optimizing CO2 cooling.
(2) Safe CO2 Integration: CO2 serves as a secure medium in personnel-heavy areas, including single-freezing machines and storage spaces, ensuring safety for both personnel and 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 leading-edge manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. specializes in customizing products meticulously tailored to meet your specific needs. Unsure of which model suits your requirements? Reach out to us, and we'll assist you in finding the perfect match!Our team boasts several expert engineers who are dedicated to crafting bespoke solutions precisely for you, ensuring that your unique requirements are not only met but exceeded.
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Spanning across an impressive 60,542 square meters, this ambitious project boasts a total construction area of 72,370.31 square meters. Within this expanse, a state-of-the-art production workshop and cold storage area encompass a vast 65,538.50 square meters, ensuring ample space for operations and storage requirements.
Proudly presenting our flagship collections, Qingdao Bingyan Refrigeration Equipment Co., Ltd. specializes in: State-of-the-art Condensing Units,High-Performance Air Coolers,Innovative Evaporative Condensers,Premium Freezers,Durable Cold Room Doors,
Advanced Cold Storage Panels, For a deeper insight into our exquisite product range, simply click on the product name or image to explore further.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is nestled in the picturesque coastal city of Qingdao. Our company integrates the realms of industrial and commercial freezing, cold storage solutions, and advanced refrigeration technology. As a distinguished high-tech enterprise, we specialize in the research, design, manufacturing, and sales of state-of-the-art refrigeration systems and equipment.
From our inception, we have passionately embraced 'science and technology' as our guiding star, with 'management' as our steadfast foundation, ensuring we consistently meet market demands and exceed customer expectations. Our mission is to deliver impeccable refrigeration system solutions, superior products, and exceptional services to our valued clients.
Boasting over ten national technology patents, we are dedicated to the perpetual advancement of high-efficiency, energy-saving, and environmentally friendly refrigeration configurations. Our expertise includes high-performance refrigeration units, energy-conserving barrel pumps, and cutting-edge PLC intelligent program control boxes, all meticulously crafted to elevate industry standards.
Our expertise primarily encompasses the design and customization of equipment for a wide array of projects. These include food quick-freezing storage, food cold storage, ultra-low temperature cold storage, medicine storage, and air-conditioning storage for fruits and vegetables. Additionally, we excel in workshop air conditioning, quick-freezing and freeze-drying processes, and innovative thawing devices.
BINGYAN is passionately dedicated to delivering customers with innovative, scientific, and well-engineered refrigeration system solutions. Our promise extends to offering top-tier engineering coupled with unmatched after-sales service excellence.
Bingyan is your one-stop solution for all refrigeration needs, offering a full suite of comprehensive services ranging from sales and design to meticulous construction and dedicated after-sales support.
1. Our sales department is adept at keenly understanding and anticipating customer needs, ensuring that customer intentions are precisely conveyed and consistently maintained through seamless and constant communication.
2. Partner with our design department to access expert, professional, and tailored engineering recommendations. We specialize in crafting reliable and stable refrigeration plans that are meticulously customized to meet your specific requirements.
3. Our engineering department approaches each construction phase with earnest dedication, meticulously fulfilling every task with a commitment to excellence, resulting in projects of unparalleled quality.
4. Our after-sales department remains ever-vigilant and ready, poised to ensure that our customers achieve enduring success and satisfaction.
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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