NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Ingenious Principle of Cascade Refrigeration Systems
NH3/CO2: The cascade refrigeration marvel is ingeniously structured into two distinct stages - high temperature and low temperature. The high temperature stage employs NH3 as the refrigerant, while CO2 is the chosen refrigerant for the low temperature stage. The evaporation of NH3 at the high-temperature level ingeniously manages to condense the CO2 gas emitted from the low-temperature level. A remarkable condensation evaporator bridges these two stages, serving dually as the condenser for the low-temperature level and the evaporator for the high-temperature level.
In this sophisticated system, heat is effortlessly transferred to the CO2 refrigerant through the end evaporator, and the CO2's absorbed heat is then seamlessly passed on to the high-temperature NH3 refrigerant. The NH3 refrigerant majestically transfers this heat to the high-temperature condenser, ultimately releasing it into the environment via a cooling medium. As the CO2 condenses in the condensing evaporator, it flows into the CO2 reservoir, then journeys through the dryer filter and throttle valve into the CO2 gas-liquid separator. With elegance, liquid CO2 is delivered to the CO2 evaporator by a circulation pump, thereafter, the two-phase CO2 regresses to the gas-liquid separator, while gaseous CO2 is reabsorbed by the compressor and compressed back into the condensing evaporator. This sophisticated process perpetuates to complete the entire cascade refrigeration cycle.
NH3/CO2: In the cascade refrigeration system, each temperature level operates independently using a single refrigerant. The equipment composition divides into two sections: the high-temperature NH3 system mirrors conventional refrigeration systems, featuring not only a refrigeration compressor but also a condenser, liquid storage, gas-liquid separator, and a throttling device. The low-temperature CO2 system boasts a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and an expansion vessel.
The The CO2 gas-liquid separator is a meticulously designed component that efficiently segregates CO2 gas droplets from the evaporator in the CO2 compression refrigeration system. This prevents compressor wet strokes, stabilizes liquid levels during pump operation, and stores equipment and pipeline liquid returns when the pump halts. As a reservoir, it efficiently holds all CO2 liquid in the system during non-operational periods. An auxiliary evaporator strategically placed atop the separator adeptly prevents excessive CO2 pressure post-shutdown. In NH3/CO2 systems, the condensing evaporator performs dual functions, acting as the NH3 side's evaporator and the CO2 side's condenser, inducing compound liquid evaporation and heat absorption within the tube, while CO2 gas condenses into liquid within the shell.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Dramatic Reduction in NH3 Safety Concerns:
(1.(1)) The NH3/CO2 cascade refrigeration system significantly diminishes the condensing pressure of the NH3 charge to approximately one-tenth that of traditional ammonia systems.
(1.(2)) NH3 is confined to the machine and equipment rooms—akin to a 'tiger' in a 'cage', under the watchful care of skilled professionals.
(1.(3)) This system maximizes NH3's superior heat transfer capabilities within high-temperature zones, efficiently cooling CO2.
(2) CO2 as a Safe Medium: CO2 integration allows for safely introducing the medium into areas with high personnel activity, such as single-freezing machines and warehouses, ensuring the protection of both individuals and property.
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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 manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. specializes in tailoring our Variable Frequency Screw Compressors to meet your specific needs. If you're uncertain about the ideal model for your requirements, feel free to reach out to us with your queries.We have a team of highly skilled engineers eager to craft a bespoke solution perfectly aligned with your expectations and operational demands.
Shandong Binzhou Huiyang Cold Chain Logistics Port
This expansive project spans an impressive area of 60,542 square meters, boasting a substantial total construction area of 72,370.31 square meters. Among its highlights are a state-of-the-art production workshop and a vast cold storage zone, covering a remarkable 65,538.50 square meters, designed to accommodate large-scale refrigeration demands with ease and efficiency.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., we proudly present our impressive lineup of cutting-edge solutions, including: High-Efficiency Condensing Units,Innovative Air Coolers,Advanced Evaporative Condensers,Reliable Freezers for All Needs,Durable Cold Room Doors,
State-of-the-Art Cold Storage Panels, For a comprehensive view of our offerings, click on the specific product name or picture to discover more.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in 2011 in the picturesque coastal city of Qingdao, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is a pioneering high-tech enterprise. We are dedicated to the integration of industrial and commercial freezing and cold storage, leading-edge refrigeration systems, and state-of-the-art equipment design, manufacturing, and sales.
From our very beginning, we have embraced 'science and technology' as our guiding light, with 'management' serving as our steadfast foundation. Our mission is to meet market demands through exceptional customer service, delivering impeccable refrigeration system solutions, unparalleled products, and exemplary services.
Boasting over ten national technology patents, our company is perpetually devoted to innovating high-efficiency, energy-saving, and eco-friendly refrigeration systems. Our offerings include superior refrigeration units, energy-efficient barrel pumps, and PLC intelligent program control boxes, all crafted with precision and care.
Our expertise shines in the tailored program design and customization of equipment for projects like food quick-freezing storage, advanced food cold storage, ultra-low temperature cold storage, pharmaceutical storage, air-conditioning storage for fruits and vegetables, workshop air conditioning, rapid freezing, freeze-drying, and defrosting devices.
BINGYAN is passionately committed to delivering scientifically advanced and meticulously crafted refrigeration system solutions, alongside unparalleled high-quality engineering expertise and exceptional after-sales services.
Bingyan offers an all-encompassing suite of services encompassing sales, innovative design, precise construction, and dedicated after-sales support.
1. Our dynamic sales department excels at grasping the nuances of customer needs, effectively conveying their vision, and maintaining seamless, responsive communication to build lasting relationships.
2. The talented design team at Bingyan provides expert engineering advice, crafting bespoke and dependable refrigeration plans tailored precisely to the unique requirements of each customer.
3. Our engineering department approaches each construction phase with meticulous attention to detail, completing every task with precision and a commitment to excellence, resulting in high-quality projects that exceed expectations.
4. The dedicated after-sales department remains ever-ready and vigilant, ensuring continuous success and satisfaction for our valued 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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