NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle Behind the Cascade Refrigeration System
NH3/CO2 cascade refrigeration systems ingeniously combine two distinct phases: the high temperature stage and the low temperature stage. The high temperature stage employs NH3 (ammonia) as its refrigerant, while the low temperature stage utilizes CO2. This meticulous design allows the evaporation of NH3 within the high temperature level to effectively condense CO2 gas coming from the low temperature level. A pivotal condensation evaporator bridges these two stages, doubling as the low temperature condenser and the high temperature evaporator, ensuring seamless thermal exchange.
The heat load is adeptly transferred to the CO2 refrigerant via the end evaporator. CO2 refrigerant then absorbs this heat and passes it to the high-temperature NH3 refrigerant through a condensing evaporator. Subsequently, NH3 transfers the heat to a high-temperature condenser, releasing it effectively to the environment with the aid of a cooling medium. Condensed CO2 travels from the condensing evaporator to the CO2 reservoir and through the dryer filter and throttle valve to the CO2 gas-liquid separator. A CO2 circulation pump channels liquid CO2 to the CO2 evaporator. Post evaporation, two-phase CO2 returns to the separator, with gaseous CO2 being suctioned into the compressor, compressed back into the condensing evaporator, perpetuating the efficient cycle of refrigeration.
NH3/CO2 cascade refrigeration systems distinctly segment high and low temperature levels, each employing a single refrigerant. The high-temperature NH3 system mirrors conventional cooling systems, featuring refrigeration compressors, condensers, liquid storage, gas-liquid separators, and throttling devices. Meanwhile, the low-temperature CO2 system boasts a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, optimizing every step of the cooling process.
The The CO2 gas-liquid separator plays a crucial role in segregating CO2 gas droplets from the evaporator within the CO2 compression refrigeration system. This prevents compressor wet stroke, maintains a stable liquid level during pump operations, and accommodates liquid return from end equipment and pipelines when the pump ceases operation. When idle, if used as a reservoir, the separator's volume should encompass all CO2 liquid in the system. Additionally, an auxiliary evaporator atop the gas-liquid separator ensures CO2 pressure remains optimal post-shutdown. Within the NH3/CO2 cascade system, the condensing evaporator simultaneously serves as the NH3-side evaporator and CO2-side condenser, where compound liquid evaporates and absorbs heat in the tube, and CO2 gas efficiently condenses into liquid within the shell.
2. Unveiling the Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Diminished NH3 Safety Concerns:
(1.(1)) The NH3/CO2 cascade system dramatically curtails the NH3 condensing pressure, reducing the NH3 refrigerant charge to merely 1/10th of traditional systems.
(1.(2)) NH3 is confined to machine and equipment rooms, akin to a 'tiger' securely caged and monitored by skilled personnel.
(1.(3)) The system fully exploits NH3's superior heat transfer properties in high-temperature zones to cool CO2, enhancing efficiency.
(2) Ensuring Safety with CO2: CO2 functions within personnel-dense operational spaces, like single-freezing machines and warehouses, safeguarding both personnel and assets.
4f5ab0ae
| 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. is dedicated to tailoring our products to meet your specific needs. If you're unsure which model of the Electric Screw Compressor for Optimal Aquatic Product Refrigeration best suits your requirements, feel free to reach out to us. Our team is eager to assist you in making the right choice.Our team includes several highly skilled engineers who are ready to design a bespoke solution that aligns perfectly with your unique specifications. Let us help you achieve optimal results with our customized approach.
Shandong Binzhou Huiyang Cold Chain Logistics Port
This expansive project spans an impressive 60,542 square meters, housing a total construction area of 72,370.31 square meters. It features state-of-the-art production workshops paired with a vast cold storage space totaling 65,538.50 square meters, ensuring optimal conditions for all logistics needs.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., we proudly offer an extensive array of industry-leading products, including: State-of-the-Art Condensing Units,High-Efficiency Air Coolers,Innovative Evaporative Condensers,Advanced Freezers,Precision Engineered Cold Room Doors,
Durable and Insulated Cold Storage Panels, For more insight into our comprehensive product range, please click on the respective product name or image to explore further.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011 in the picturesque coastal city of Qingdao, Qingdao Bingyan Refrigeration Equipment Co., Ltd. stands as a beacon of innovation, blending industrial and commercial freezing with cold storage excellence. Specializing in the cutting-edge research and development, design, manufacturing, and sales of top-tier refrigeration systems, we are a high-tech enterprise committed to pushing boundaries.
Since our inception, we have embraced science and technology as our guiding light and management as our steadfast promise. This allows us to meet the evolving demands of the market while prioritizing impeccable customer service. Our ultimate mission is to deliver flawless refrigeration system solutions, unparalleled products, and superior services to our valued clients.
Proudly holding more than ten national technology patents, Qingdao Bingyan is dedicated to the relentless pursuit of developing high-efficiency, energy-saving, and environmentally friendly refrigeration configurations. Our innovations include state-of-the-art high-efficiency refrigeration units, energy-conserving barrel pumps, and advanced PLC intelligent program control boxes, ensuring we remain at the forefront of industry advancements.
Our expertise shines in tailoring program designs and customizing equipment for diverse projects. Whether it's food quick-freezing storage, ultra-low temperature cold storage, pharmaceutical storage, fruit and vegetable air-conditioning storage, workshop climate control, rapid freezing and freeze-drying, or sophisticated thawing devices, our solutions are crafted to perfection, ensuring excellence in every application we undertake.
BINGYAN is wholeheartedly dedicated to delivering scientifically advanced and meticulously crafted refrigeration system solutions to our esteemed clients. Our commitment extends beyond exceptional engineering to encompass unparalleled after-sales service, ensuring customer satisfaction at every stage.
Bingyan offers a comprehensive suite of services, intricately combining sales, bespoke design, meticulous construction, and continuous after-sales support.
1. Our Sales Department possesses an acute ability to discern and appreciate customer needs, effectively conveying their aspirations while fostering a strong bond through seamless communication.
2. The Design Department is a beacon of expertise, offering customers refined and insightful engineering advice. We meticulously craft refrigeration plans that are both trustworthy and tailored to meet specific client requirements.
3. Our Engineering Department approaches each construction phase with diligence and precision, ensuring every task is executed flawlessly. We are committed to excellence, creating high-caliber projects that stand the test of time.
4. The After-Sales Department remains ever vigilant and on alert, poised to guarantee the success and satisfaction of 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.
Audited Supplier 
){kind=link}