NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Ingenious Cascade Refrigeration System Principle
The NH3/CO2 cascade refrigeration system is a marvel of engineering, consisting of two distinct yet harmoniously integrated parts: the high temperature stage and the low temperature stage. The high temperature stage utilizes NH3 as the refrigerant, while the low temperature stage operates with CO2. The brilliance of this system lies in how the evaporation of NH3 in the high temperature stage ingeniously condenses the CO2 refrigerant gas from the low temperature stage. These stages are seamlessly connected by a condensation evaporator, which serves the dual purpose of acting as the condenser for the low temperature stage and the evaporator for the high temperature stage.
In this sophisticated system, the heat load is masterfully transferred to the CO2 refrigerant via the end evaporator. The CO2 refrigerant absorbs this heat and then passes it onto the high-temperature NH3 refrigerant through the condensing evaporator. The high-temperature NH3 refrigerant skillfully releases this heat into the environment through a cooling medium at the high-temperature condenser. The journey of the condensed CO2 continues as it enters the CO2 reservoir, then progresses through a dryer filter and throttle valve to reach the CO2 gas-liquid separator. Powered by a CO2 circulation pump, liquid CO2 embarks to the CO2 evaporator (sans end cooling devices like single freezers or chillers). After the evaporator, the two-phase CO2 elegantly returns to the gas-liquid separator, where gaseous CO2 is expertly compressed into the condensing evaporator by the compressor. This cycle repeats, completing the sophisticated cascade refrigeration cycle.
The NH3/CO2 cascade refrigeration system showcases an elegant dual-temperature setup, with each stage functioning independently using a single refrigerant. The high-temperature NH3 refrigeration system mirrors a conventional system, replete with a compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low temperature CO2 refrigeration system boasts a condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel. Each component works in harmony, orchestrating a seamless and efficient refrigeration process.
The CO2 gas-liquid separator plays a pivotal role in maintaining the system's stability. It deftly separates CO2 gas droplets from the evaporator within the CO2 compression refrigeration system, preventing wet strokes in compressors and preserving a steady liquid level during pump operation. When the pump is idle, it ensures safe liquid return from end equipment and pipelines. As a reservoir, its capacity is engineered to accommodate all CO2 liquid when dormant. An auxiliary evaporator safeguards against excessive CO2 pressure post-shutdown. In the NH3/CO2 cascade, the condensing evaporator is an ingenious dual-function component, serving as an NH3 evaporator and a CO2 condenser, facilitating the efficient phase transition of CO2 gas into liquid.
2. Unveiling the Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Significantly Reduced NH3 Safety Concerns:
(1.(1)) The NH3/CO2 cascade refrigeration system remarkably reduces the condensing pressure of the NH3 refrigerant charge, trimming it down to approximately 1/10th of the traditional ammonia refrigeration system's charge.
(1.(2)) NH3 is securely contained within the confines of the machine room and equipment room, akin to a 'tiger' safeguarded within a 'cage,' under the watchful eyes of skilled professionals.
(1.(3)) The system maximizes NH3's exceptional heat transfer properties in high-temperature regions to effectively cool CO2.
(2) CO2: The Guardian of Safety, confidently enters personnel-heavy operational areas, such as single-freezing sections and storage warehouses, ensuring the utmost safety for both individuals and properties.
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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 premier manufacturer, we offer the flexibility to tailor our products precisely to your needs. Unsure of the perfect model for your requirements? Simply reach out to us and we'll guide you seamlessly.Our team boasts several highly skilled engineers, ready to craft a bespoke solution that aligns perfectly with your unique specifications.
Shandong Binzhou Huiyang Cold Chain Logistics Port
This impressive project spans a vast area of 60,542 square meters. The total construction encompasses a substantial 72,370.31 square meters, which includes a state-of-the-art production workshop. The cold storage area itself is an expansive 65,538.50 square meters, showcasing the extraordinary scale and capacity of this logistics port.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., our premier offerings include: High-Efficiency Condensing Units,Innovative Air Coolers,Cutting-edge Evaporative Condensers,State-of-the-art Freezers,Durable Cold Room Doors,
Premium Cold Storage Panels, For a deeper exploration of our diverse product range, simply click on the product name or product image above.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011 in the enchanting coastal city of Qingdao, Qingdao Bingyan Refrigeration Equipment Co., Ltd. stands as a premier high-tech enterprise. We specialize in a comprehensive suite of industrial and commercial freezing and cold storage solutions, along with cutting-edge refrigeration systems. Our expertise spans across research and development, innovative design, precision manufacturing, and strategic sales, making us a distinguished leader in the refrigeration industry.
From the very beginning, our company has embraced a philosophy centered around 'science and technology' as our beacon, while 'management' serves as our steadfast assurance. Our mission is to meet market demands and provide unparalleled customer service by delivering flawless refrigeration system solutions, products, and services that exceed expectations.
Boasting over ten prestigious national technology patents, Qingdao Bingyan is dedicated to the perpetual research and development of high-efficiency, energy-saving, and environmentally friendly refrigeration system configurations. Our innovations include top-notch refrigeration units, energy-efficient barrel pumps, and advanced PLC intelligent program control boxes, all tailored to enhance performance and sustainability.
Our expertise primarily caters to the program design and equipment customization of diverse projects including food quick-freezing storage, food cold storage, ultra-low temperature cold storage, medicinal storage, air-conditioned storage for fruits and vegetables, workshop air conditioning, quick-freezing and freeze-drying, and state-of-the-art thawing devices.
BINGYAN IS DEDICATED TO DELIVERING CUTTING-EDGE AND SCIENTIFICALLY-BACKED REFRIGERATION SYSTEM SOLUTIONS. WE PRIDE OURSELVES ON PROVIDING NOT JUST HIGH-QUALITY PRODUCTS BUT ALSO UNSURPASSED ENGINEERING SERVICES AND RELIABLE AFTER-SALES SUPPORT.
At Bingyan, we offer an all-encompassing suite of services including sales, innovative design, meticulous construction, and dedicated after-sales support, ensuring a seamless customer experience from start to finish.
1. Our sales department excels in precisely identifying and comprehending customer needs, effectively communicating customer intentions, and maintaining a robust dialogue with clients, ensuring every communication is clear and valuable.
2. In the design department, we deliver professional insights and cutting-edge engineering recommendations. We custom-craft dependable and stable refrigeration plans tailored to each customer’s specific requirements.
3. The engineering department is committed to precision in every construction phase, handling every task with utmost care and striving for excellence to achieve superior quality projects that stand out.
4. Our after-sales department is always prepared and vigilant, ensuring customer success and satisfaction with prompt and reliable support.
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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