NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Ingenious Principle of Cascade Refrigeration Systems
The NH3/CO2 cascade refrigeration system is a marvel of engineering, elegantly split into two integral sections: the high temperature stage employing NH3 as the refrigerant, and the low temperature stage leveraging CO2. In a harmonious dance of cooling, the high-temperature NH3 evaporates to efficiently condense CO2 gas from the lower temperature stage. A sophisticated condensation evaporator acts as the intermediary, connecting the two stages: it serves as the condenser for the low temperature stage and the evaporator for the high temperature stage, thus ensuring seamless thermal interaction.
The thermal journey begins as the heat load is transferred to the CO2 refrigerant via the end evaporator. Once absorbed, this heat is gracefully passed to the high-temperature NH3 through the condensing evaporator, from where it elegantly exits to the environment via the high-temperature condenser, facilitated by a cooling medium. The condensed CO2 then journeys to the CO2 reservoir before proceeding through a dryer filter and throttle valve, onwards to the CO2 gas-liquid separator. Driven by the CO2 circulation pump, the liquid CO2 reaches the CO2 evaporator. Post-evaporation, the CO2 returns in a two-phase state to the separator, where gaseous CO2 is drawn by the compressor and returned to the condensing evaporator, perpetuating a flawless cascade refrigeration cycle.
Within the NH3/CO2 cascade system, the high and low temperature levels are uniquely maintained by their respective single refrigerant systems. The high-temperature NH3 system mirrors conventional refrigeration techniques, comprising a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Concurrently, the low-temperature CO2 system is equipped with its own set of sophisticated apparatus: a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, each playing a vital role in achieving optimum refrigeration.
The CO2 gas-liquid separator is meticulously designed to efficiently separate CO2 gas droplets post-evaporation in the CO2 compression refrigeration system. This prevents compressor wet strokes, maintains a consistent liquid level during pump operation, and accommodates liquid return when the pump is halted. Should the gas-liquid separator serve as a CO2 reservoir when inactive, its capacity must encompass the entire system's CO2 liquid. An auxiliary evaporator atop the separator is essential for mitigating excessive CO2 pressure post-shutdown. In the symbiotic NH3/CO2 system, the condensing evaporator doubles as the evaporator for NH3 and the condenser for CO2, with compound liquids evaporating within the tube, while CO2 gas undergoes a serene transformation into liquid within the shell.
2. Distinct Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Minimizing NH3 Safety Concerns:
(1.(1)) The NH3/CO2 system dramatically slashes the condensing pressure of NH3 to about 1/10th that of traditional ammonia systems, significantly enhancing safety;
(1.(2)) NH3 is safely confined to the machine room or equipment room, akin to a 'tiger in a cage,' supervised by skilled professionals;
(1.(3)) It optimally exploits NH3's superior heat transfer properties in high-temperature zones to efficiently cool CO2.
(2) Safe Integration of CO2 into High-Occupancy Areas: CO2 serves as the medium in areas with high human activity, such as single-freezing machines and warehouses, safeguarding both personnel 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 dedicated manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. offers bespoke product customization tailored to your exact needs. Should you find yourself uncertain about which model best suits your requirements, feel free to send us a message.Our highly experienced team, consisting of several professional engineers, is ready to craft a personalized and innovative solution just for you.
Shandong Binzhou Huiyang Cold Chain Logistics Port
Spanning an impressive 60,542 square meters, this remarkable project boasts a total construction area of 72,370.31 square meters. It includes a state-of-the-art production workshop and a vast cold storage area encompassing 65,538.50 square meters.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., we proudly offer a diverse assortment of high-quality refrigeration products including: State-of-the-Art Condensing Units,Advanced Air Coolers,Efficient Evaporative Condensers,Versatile Freezers,Durable Cold Room Doors,
High-Performance Cold Storage Panels, For further insights into our innovative product range, click on any product name or image to discover more.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011 in the picturesque coastal city of Qingdao, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is a cutting-edge high-tech enterprise. We seamlessly integrate industrial and commercial freezing and cold storage, refrigeration system design, manufacturing, and sales, offering comprehensive solutions for all your refrigeration needs.
From our inception, we have embraced 'science and technology' as our guiding beacon, while 'management' serves as our steadfast assurance. Our mission is to satisfy market demands and deliver unparalleled customer service by providing impeccable refrigeration system solutions, exceptional products, and dedicated services.
With over ten prestigious national technology patents, our company is unwavering in its commitment to the research and development of cutting-edge, energy-efficient, and environmentally friendly refrigeration systems. We specialize in high-efficiency refrigeration units, energy-saving barrel pumps, and state-of-the-art PLC intelligent program control boxes.
We pride ourselves in customizing and designing top-notch equipment for diverse projects such as food quick-freezing storage, food cold storage, ultra-low temperature cold storage, medicine storage, and fruit and vegetable air-conditioning storage. Our expertise extends to workshop air conditioning, quick-freezing, freeze-drying, and thawing devices.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., we are steadfastly devoted to delivering customers scientifically advanced and meticulously devised refrigeration system solutions. Our commitment extends beyond product excellence to encompass superior engineering and outstanding after-sales services, ensuring an unparalleled customer experience.
Bingyan is your one-stop destination for all refrigeration needs, offering a full spectrum of services including sales, bespoke design, meticulous construction, and exceptional after-sales service. Every step of the way, we ensure complete satisfaction and reliability.
1. Our sales department is adept at precisely understanding and capturing the unique needs of our clientele. With an unwavering focus on accurately conveying customer intentions, we maintain seamless and effective communication to ensure each requirement is met with precision.
2. In the design department, we offer customers expert and well-considered engineering advice, crafting tailored and dependable refrigeration plans that align perfectly with specific customer requirements. Our designs ensure reliability and stability are at the forefront.
3. The engineering department approaches each construction phase with the utmost care and precision, executing every task to perfection. Our relentless pursuit of excellence guarantees high-quality projects that not only meet but exceed expectations.
4. Our after-sales department is perpetually prepared and at your service, committed to ensuring your success with unwavering support and readiness to address any needs that may arise.
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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