NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle of Cascade Refrigeration Systems
The NH3/CO2 cascade refrigeration system is ingeniously designed into two distinct temperature stages: a high-temperature stage using NH3 as its refrigerant, and a low-temperature stage where CO2 takes center stage. The magic unfolds as NH3 in the high-temperature system evaporates to cool and condense the CO2 gas from the low-temperature stage. This process seamlessly integrates both temperature levels through a condensation evaporator, acting as the condenser for CO2 and the evaporator for NH3, creating synergy within the system.
In this revolutionary system, heat load is efficiently transferred to the CO2 refrigerant via the terminal evaporator. This absorbed thermal energy is then handed over to the NH3 refrigerant through the condensing evaporator. Subsequently, the high-temperature NH3 refrigerant transports this heat to the condenser, releasing it into the environment using a cooling medium. CO2, now condensed in the evaporator, finds its way into the CO2 reservoir, progressing through a dryer filter and throttle valve to reach the CO2 gas-liquid separator. The liquid CO2 embarks on a journey to the evaporator through the circulation pump, sans end cooling devices like freezers or chillers. Post-evaporation, the two-phase CO2 reverts to the separator, with the gaseous form being compressed back into the evaporator by the compressor, ensuring the cycle perpetuates smoothly.
In the innovative NH3/CO2 cascade refrigeration system, each level operates independently with distinct refrigerants. The high-temperature NH3 refrigeration system mirrors traditional setups, comprising a compressor, condenser, liquid storage, gas-liquid separator, and a throttling device. Meanwhile, the CO2 system at the low temperature level integrates components like a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and an expansion vessel, all harmonized to maintain optimal efficiency.
The The CO2 gas-liquid separator plays a pivotal role, adeptly isolating CO2 droplets from the evaporator within the compression system, preventing compressor wet strokes, stabilizing liquid levels during pump operation, and storing fluids during pump halts. Additionally, should it serve as a CO2 reservoir when inactive, its capacity must encompass all system-bound CO2 liquid. Complementarily, an auxiliary evaporator atop the separator mitigates pressure surges post-shutdown. Within the NH3/CO2 cascade system, the condensing evaporator functions dually as NH3's evaporator and CO2's condenser, where compound liquids artfully absorb heat in the tubes, while CO2 gas transforms into liquid within the shell.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Diminished NH3-Related Risks:
(1.(1)) The NH3/CO2 cascade system dramatically slashes the condensing pressure for NH3 refrigerants, reducing it to nearly one-tenth of traditional systems, thereby elevating safety standards.
(1.(2)) NH3 is strategically contained within dedicated spaces such as the machine and equipment rooms, akin to keeping a 'tiger caged', under the vigilant supervision of skilled professionals.
(1.(3)) This system capitalizes on NH3's excellent heat transfer capabilities, utilizing it in high-temperature zones for efficient CO2 cooling.
(2) By integrating CO2 as a medium in areas bustling with personnel, such as single-freezing machine rooms and warehouses, we prioritize the protection of both individuals and assets. This strategic approach guarantees a secure and efficient environment.
3) CO2 is ingeniously utilized as a low-temperature grade work medium. This innovation not only tackles the challenge of high pressure but also harnesses CO2's superior heat transfer efficiency in low-temperature settings, enhancing performance remarkably.
| 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 and leader in the industry, Qingdao Bingyan Refrigeration Equipment Co., Ltd. specializes in designing and customizing products to meet your unique specifications. If you are unsure which model best suits your needs, feel free to send us a message, and our expert team will guide you toward the perfect solution.Our team boasts several highly skilled engineers who are dedicated to crafting bespoke solutions tailored specifically for your needs, ensuring optimal efficiency and satisfaction.
Shandong Binzhou Huiyang Cold Chain Logistics Port
This expansive project spans an impressive 60,542 square meters, boasting a comprehensive total construction area of 72,370.31 square meters. Within this space, you'll find a meticulously designed production workshop and an extensive cold storage area enveloping 65,538.50 square meters, all tailored to meet modern logistics and storage needs.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., our flagship offerings encompass: High-Efficiency Condensing Units,Advanced Air Coolers,Innovative Evaporative Condensers,State-of-the-Art Freezers,Precision-Crafted 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. As a forefront high-tech enterprise, we specialize in a comprehensive array of services, encompassing industrial and commercial freezing, cold storage solutions, state-of-the-art refrigeration systems, and cutting-edge equipment. Our expertise extends from meticulous research and innovative design to manufacturing excellence and strategic sales.
Since our inception, we've embraced a guiding philosophy rooted in 'science and technology', ensuring 'management' is our steadfast guarantee to fulfill market demands. Our mission is to deliver impeccable customer service by offering sophisticated refrigeration system solutions, superior products, and unparalleled services.
Boasting over ten national technology patents, our company is deeply committed to pioneering research and development. Our focus is on creating high-efficiency, energy-saving, and eco-friendly refrigeration configurations. Our portfolio includes advanced refrigeration units, energy-conserving barrel pumps, and sophisticated PLC intelligent program control boxes.
Our services predominantly cater to bespoke program design and equipment customization for a diverse range of projects. These include food quick-freezing storage, ultra-low temperature cold storage for pharmaceuticals, fruit and vegetable air-conditioning storage, workshop air conditioning, quick-freezing and freeze-drying applications, and innovative thawing devices.
At BINGYAN, we are passionately dedicated to offering our customers scientifically backed and meticulously crafted refrigeration system solutions. Our commitment extends to ensuring top-notch engineering and unparalleled after-sales services, providing peace of mind and reliability you can count on.
Bingyan prides itself on delivering an all-encompassing suite of services, including expert sales, innovative design, meticulous construction, and exceptional after-sales service, all under one roof to meet and exceed customer expectations.
1. Our sales department excels in deeply understanding and capturing customer requirements, ensuring their intentions are conveyed with precision and maintaining seamless communication for a smooth and cut-through interaction process.
2. The design department stands out by offering clients professional and insightful engineering advice. We develop tailored and dependable refrigeration plans that are harmoniously aligned with customer needs, ensuring optimal performance and satisfaction.
3. In the engineering department, every construction task is approached with utmost care and precision. We are committed to achieving excellence in each aspect of construction, resulting in high-quality projects that set the benchmark in the industry.
4. Our after-sales department is ever-vigilant and poised to spring into action, ensuring comprehensive support that guarantees the success and satisfaction of our esteemed 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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