NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Ingenious Principle of Cascade Refrigeration Systems
The NH3/CO2 cascade refrigeration system is a brilliantly engineered dual-level system composed of a high-temperature stage utilizing NH3 as the refrigerant and a low-temperature stage employing CO2. The innovative design allows the evaporation of NH3 in the high-temperature system to efficiently condense the CO2 refrigerant gas from the low-temperature stage. Central to this synergy is the condensation evaporator, a pivotal component linking the two stages. It serves the dual purpose of being the condenser for the CO2 stage and the evaporator for the NH3 stage, showcasing an elegant solution in refrigeration technology.
In this sophisticated system, the heat load is adeptly transferred to the CO2 refrigerant via the end evaporator. The heat is then masterfully absorbed by the CO2 and passed on to the high-temperature NH3 refrigerant through the condensing evaporator. This NH3 refrigerant subsequently releases the heat to a high-temperature condenser, dispersing it into the environment with the assistance of a cooling medium. The condensed CO2 makes its way to the CO2 reservoir, navigating through a dryer filter and throttle valve before entering the gas-liquid separator. The CO2 circulation pump then delivers the liquid CO2 to the evaporator. After passing through, the two-phase CO2 returns to the separator; the compressor then sucks in the gaseous CO2, compressing it back into the condensing evaporator. This seamless cycle repeats, epitomizing the elegance of the cascade refrigeration process.
Within the NH3/CO2 cascade refrigeration system, each level operates independently with a singular refrigerant. The system's architecture is divided into two distinct parts: the high-temperature NH3 system mirrors a conventional setup, comprising a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 system features a CO2 compressor alongside a condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, epitomizing the precision and robustness of this cutting-edge system.
The CO2 gas-liquid separator is an essential component, ingeniously designed to separate CO2 gas droplets from the evaporator in the CO2 compression system. This prevents compressor wet strokes, maintains a stable liquid level during pump operation, and accommodates the end equipment and pipeline's liquid return when the pump halts. When used as a CO2 reservoir during inactivity, it must be capacious enough to contain all system CO2 liquid. An auxiliary evaporator atop the separator is crucial to mitigate high CO2 pressure post-shutdown. In the NH3/CO2 cascade system, the condensing evaporator ingeniously serves dual roles: it acts as an NH3 side evaporator and a CO2 side condenser, facilitating the heat absorption and condensation processes with remarkable efficacy.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Enhanced Safety with NH3:
(1.(1)) The NH3/CO2 cascade system remarkably lowers NH3 condensing pressure, reducing the charge to approximately 1/10 of traditional ammonia systems, ensuring a safer operation.
(1.(2)) NH3 is securely confined to the machine room and equipment space, akin to a 'tiger' safely caged, under the vigilant watch of expert technical personnel.
(1.(3)) The system fully exploits NH3's excellent heat transfer properties in high-temperature zones to effectively cool CO2, optimizing thermal management.
(2) CO2: A Safe Medium for Personnel and Property: By introducing CO2 into areas with high personnel density, such as single-freezing machines and storage facilities, the system ensures unparalleled safety for both individuals and assets, setting a new standard in refrigeration safety.
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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. offers you the privilege of product customization tailored precisely to your needs. If you're uncertain about which model aligns perfectly with your requirements, please don't hesitate to reach out to us.Our team boasts a cadre of highly skilled and dedicated engineers, ready to craft a bespoke solution that meets your exact specifications.
Location Highlight: Shandong Binzhou Huiyang Cold Chain Logistics Port
This extensive project spans an impressive 60,542 square meters, with an expansive total construction area of 72,370.31 square meters. The development includes a state-of-the-art production workshop and an expansive cold storage area, meticulously designed over 65,538.50 square meters to meet the highest standards.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. proudly presents an exquisite array of innovative refrigeration solutions, including: High-efficiency Condensing Units that ensure optimal performance and reliability,Advanced Air Coolers designed for maximum cooling and energy efficiency,Cutting-edge Evaporative Condensers, engineered to deliver superior heat exchange capabilities,Robust Freezers with exceptional durability and storage capacity,Precision Cold Room Doors crafted for seamless operation and insulation,
High-quality Cold Storage Panels that provide unmatched thermal efficiency, To delve deeper into our extensive product range, we invite you to click on the product name or product picture for more information.
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 dynamic high-tech enterprise. We seamlessly integrate the realms of industrial and commercial freezing, cold storage, and advanced refrigeration systems. Our expertise spans research, design, manufacturing, and sales, making us a leading force in refrigeration solutions.
From the very beginning, we have been driven by innovation and guided by the principle of 'science and technology'. Our unwavering commitment to management excellence ensures we meet market demands with precision. Our focus is on delivering unmatched customer service, providing comprehensive and flawless refrigeration system solutions, products, and services tailored to our clients' needs.
With a portfolio boasting over ten national technology patents, we are at the forefront of developing cutting-edge, efficient, and eco-friendly refrigeration systems. Our expertise includes high-efficiency refrigeration units, energy-saving barrel pumps, and PLC intelligent program control boxes, all designed to deliver superior performance and sustainability.
Our specialized services encompass the design and customization of equipment for a variety of applications, including 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, and thawing devices. We are dedicated to providing innovative and customized solutions to meet the unique requirements of each project.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. is passionately dedicated to delivering scientifically innovative and intelligently designed refrigeration system solutions. We are committed not only to providing high-quality engineering but also to offering unparalleled after-sales services, ensuring our customers experience absolute satisfaction and reliability.
At Bingyan, we offer a comprehensive suite of services that encompass sales, expertly crafted designs, precise construction, and exceptional after-sales support, all tailored to meet your unique refrigeration needs.
1. Our sales department prides itself on a deep understanding of customer needs, ensuring effective communication and accurate conveyance of customer intentions. We maintain a seamless dialogue with our clients to guarantee a perfect match to their requirements.
2. The design department is committed to delivering professional engineering insights, crafting custom-tailored refrigeration plans that are not only reliable and robust but also precisely aligned with the specific needs of our customers.
3. Our engineering department approaches each construction process with the utmost seriousness and meticulous attention to detail, striving for excellence to deliver high-quality projects that meet and exceed industry standards.
4. Our after-sales department stands ready and vigilant at all times, guaranteeing customer success through prompt and efficient service, ensuring that every need is met swiftly and thoroughly.
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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