NH3/CO2 Cascade Refrigeration System: A Harmony of Innovation and Efficiency
1. Delve into the Groundbreaking Principle of NH3/CO2 Cascade Refrigeration System
Our NH3/CO2 cascade refrigeration system is an innovative marvel comprising dual stages: high and low temperature. In this system, NH3 thrives as the coolant in the high temperature stage, while CO2 excels in the low temperature stage. The brilliance of this system lies in the evaporation of NH3 refrigerant within the high temperature level, which serves to condense the CO2 refrigerant gas emanating from the low temperature stage. A condensation evaporator ingeniously unites these stages, acting as both the condenser for the low temperature level and the evaporator for the high temperature level, ensuring seamless integration and unparalleled efficiency.
Experience the epitome of cooling efficiency as the heat load is skillfully transferred to the CO2 refrigerant through the end evaporator. The absorbed heat by the CO2 refrigerant is seamlessly transitioned to the high-temperature NH3 refrigerant via the condensing evaporator. In a cascade of precision, the high-temperature NH3 refrigerant then imparts the heat to the high-temperature condenser, releasing it effortlessly to the environment with the aid of a cooling medium. The cycle continues as the condensed CO2 in the condensing evaporator channels into the CO2 reservoir, advancing through a dryer filter and throttle valve into the CO2 gas-liquid separator. From here, liquid CO2 embarks on its journey to the CO2 evaporator, propelled by the CO2 circulation pump. After the evaporator, the two-phase CO2 gracefully returns to the gas-liquid separator, from which gaseous CO2 is efficiently compressed into the condensing evaporator, perpetuating the cycle of excellence.
Within the NH3/CO2 cascade refrigeration system, both high and low temperature levels boast refrigeration systems each powered by a single refrigerant. The distinct equipment composition unfolds into two parts: the high-temperature NH3 refrigeration system mirrors a conventional setup with the inclusion of a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low temperature CO2 refrigeration system dazzles with its CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel.
The The CO2 gas-liquid separator plays a crucial role in maintaining the integrity of the CO2 compression refrigeration system by separating droplets from the CO2 gas originating from the evaporator. This prevents compressor wet strokes and stabilizes liquid levels when the pump is active, while also accommodating end equipment and pipeline liquid returns when the pump halts. Remarkably, if the gas-liquid separator acts as a CO2 reservoir during downtime, its volume is adeptly designed to contain all CO2 liquid within the system. Additionally, an auxiliary evaporator crowns the gas-liquid separator, effectively curbing undue CO2 pressure post-shutdown. In the NH3/CO2 cascade refrigeration system, the condensing evaporator serves a dual purpose, functioning as the NH3 side evaporator and the CO2 side condenser. Here, the compound liquid evaporates, absorbing heat within the tube, as carbon dioxide gas is elegantly condensed into liquid form within the shell.
2. Unveil the Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Enhancing Safety by Reducing NH3 Hazards
(1.(1)) The NH3/CO2 cascade refrigeration system significantly diminishes the condensing pressure of NH3 refrigerant, reducing it to approximately one-tenth of the traditional ammonia system's charge.
(1.(2)) NH3 remains confined within the machine and equipment rooms, akin to a 'tiger in a cage', diligently supervised by skilled professionals.
(1.(3)) Leverages the superb heat transfer properties of NH3 in the high-temperature domain to effectively cool CO2.
(2) The introduction of CO2 as a medium into personnel-intensive operation rooms (such as single-freezing machines) and warehouses prioritizes the safety of both individuals and assets.
3e305003
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, we specialize in tailoring products to perfectly match your specific requirements. If you're uncertain about the ideal model for your needs, don't hesitate to reach out to us with a message.Our team includes several expert engineers who are ready to craft a bespoke solution tailored just for you.
Shandong Binzhou Huiyang Cold Chain Logistics Port
Spanning a vast expanse of 60,542 square meters, this ambitious project boasts a total construction area of 72,370.31 square meters. Within this expansive domain, you'll find a state-of-the-art production workshop and an impressive cold storage facility covering a generous 65,538.50 square meters. Our facility is a testament to innovative design and functionality.
Our esteemed company's flagship products include: State-of-the-art Condensing Units,Advanced Air Coolers,High-Efficiency Evaporative Condensers,Robust Freezers,Durable Cold Room Doors,
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Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011 and nestled in the picturesque coastal city of Qingdao, our company is a pioneering force in the sphere of industrial and commercial freezing solutions. We expertly integrate the design, development, manufacturing, and sales of state-of-the-art refrigeration systems and equipment, making us a distinguished high-tech enterprise.
From the very beginning, our company has championed 'science and technology' as our beacon, while 'management' serves as our steadfast backbone. We strive to fulfill market demands with unmatched customer service, delivering exemplary refrigeration system solutions, superior products, and services that exceed expectations.
Proudly holding over ten national technology patents, our company is devoted to the relentless pursuit of developing high-efficiency, energy-saving, and environmentally friendly refrigeration systems. Our offerings include advanced refrigeration units, energy-conserving barrel pumps, and intelligent PLC program control boxes, all testament to our commitment to innovation.
We specialize in crafting bespoke solutions for complex projects, including food quick-freezing storage, sophisticated food cold storage units, ultra-low temperature cold storage systems, pharmaceutical storage, fruit and vegetable climate-controlled facilities, and workshop air conditioning. Additionally, we provide expertise in quick-freezing, freeze-drying, and thawing devices.
BINGYAN is steadfastly dedicated to delivering customers with scientifically crafted and logically sound refrigeration system solutions, coupled with stellar engineering expertise and unmatched after-sales service.
Bingyan extends a holistic suite of services encompassing sales, meticulous design, precise construction, and exceptional after-sales support, ensuring a seamless customer experience.
1. Our sales department excels at precisely understanding and capturing customer requirements, effectively communicating customer intentions, and maintaining seamless, close-knit communication to ensure no detail is overlooked.
2. The design department offers customers professional, insightful engineering recommendations and meticulously crafts tailored, reliable, and stable refrigeration plans in harmony with customer specifications.
3. Our engineering department approaches every construction phase with unwavering seriousness and meticulous attention, ensuring every task is executed to perfection, aiming to deliver projects of the highest quality.
4. The after-sales department stands perpetually ready, always on standby to guarantee the triumph of our customers, providing unwavering support and prompt assistance.

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.