NH3/CO2 Cascade Refrigeration System
1. Principle of NH3/CO2 Cascade Refrigeration System
The NH3/CO2 cascade refrigeration system ingeniously marries two distinct temperature stages: the high temperature stage employs NH3 as its refrigerant, while the low temperature stage utilizes CO2. This dynamic duo operates harmoniously, with the evaporating NH3 in the high-temperature stage seamlessly condensing the CO2 gas from the low-temperature stage. The linchpin of this system is the condensation evaporator, serving dual purposes as both the condenser for the low-temperature level and the evaporator for the high-temperature level, thus bridging the gap between the two temperature stages.
In this sophisticated system, the heat load is transferred to the CO2 refrigerant through the end evaporator. As CO2 absorbs heat, it is then conveyed to the high-temperature NH3 refrigerant via the condensing evaporator. Consequently, the NH3 refrigerant relays the heat to the high-temperature condenser, ultimately releasing it to the environment through an efficient cooling medium. The condensed CO2, collected in the condensing evaporator, navigates to the CO2 reservoir, then proceeds through the dryer filter and throttle valve into the CO2 gas-liquid separator. From here, liquid CO2 is propelled to the CO2 evaporator via the CO2 circulation pump, entering a seamless cycle. Post-evaporation, the two-phase CO2 returns to the gas-liquid separator, where the gaseous component is suctioned by the compressor, compressing back into the condensing evaporator, thus perpetuating the cascade refrigeration cycle.
In the NH3/CO2 cascade refrigeration system, the refrigeration systems for both high and low temperature levels operate independently with single refrigerants. The high-temperature NH3 refrigeration system mirrors a conventional setup, encompassing not only a refrigeration compressor but also a condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 refrigeration system features a CO2 compressor, condensing evaporator, reservoir, filter dryer, pump, throttling device, evaporator, and an expansion vessel, each component playing a pivotal role in the system's overall functionality.
The The CO2 gas-liquid separator is a critical element in the CO2 compression refrigeration system, adeptly segregating CO2 gas droplets from the evaporator to prevent compressor wet strokes and ensure stable liquid levels during pump operation. It also accommodates the return of equipment and pipeline liquids when the pump ceases operation. Should the gas-liquid separator function as a CO2 reservoir during inactive periods, it must possess sufficient volume to contain all system CO2 liquid. Additionally, an auxiliary evaporator should be positioned atop the gas-liquid separator to effectively curb CO2 pressure spikes post-shutdown. Within the NH3/CO2 cascade framework, the condensing evaporator doubles as the NH3 evaporator and the CO2 condenser, facilitating the evaporation of compound liquids and subsequent heat absorption inside the tube, while CO2 gas condenses into a liquid within the shell.
2. Advantages of NH3/CO2 Cascade Refrigeration System
(1) Reduced NH3 Unsafety Factors:
(1.(1)) The NH3/CO2 cascade refrigeration system significantly diminishes the condensing pressure of the NH3 refrigerant charge, reducing it to approximately 1/10th of conventional ammonia refrigeration systems.
(1.(2)) NH3 is confined to the machine room or equipment room, analogous to a 'tiger' in a 'cage,' under the vigilant oversight of skilled professionals.
(1.(3)) The system maximizes NH3’s excellent heat transfer properties in high-temperature regions to effectively cool CO2.
(2) Utilizing CO2 as a medium ensures the safety of personnel and property when operating in personnel-dense environments, such as single-freezing machines and warehouses.
d4035706
| 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. offers the expertise to tailor products precisely to your specifications. Unsure of the perfect model for your needs? Simply reach out to us, and we'll guide you with personalized recommendations.Our team boasts several highly skilled engineers ready to craft a bespoke solution specifically for you, ensuring that your requirements are met with precision and efficiency.
Shandong Binzhou Huiyang Cold Chain Logistics Port
Set against the vibrant backdrop of Shandong, the Binzhou Huiyang Cold Chain Logistics Port stands as a testament to expansive innovation. Stretching across an impressive 60,542 square meters, this ambitious venture boasts a total construction area of 72,370.31 square meters. Within this substantial space, a state-of-the-art production workshop and a vast cold storage area of 65,538.50 square meters are poised to redefine industry standards.
Our company's flagship products are expertly designed to meet diverse needs High-Efficiency Condensing Units,Innovative Air Coolers,Advanced Evaporative Condensers,Reliable Freezers for Optimal Preservation,Durable Cold Room Doors,
High-Quality Cold Storage Panels, To explore our comprehensive product range, we invite you to click on the product name or image for detailed information.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in the splendid coastal city of Qingdao in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. stands as a trailblazer in the realm of high-tech enterprises. We seamlessly integrate the expertise of industrial and commercial freezing and cold storage along with cutting-edge refrigeration systems. Our commitment to excellence extends across research, design, manufacturing, and sales, ensuring unparalleled quality and innovation.
Since our inception, we have been steadfast in our commitment to innovation, driven by the guiding light of 'science and technology' and supported by robust 'management' strategies. Our unwavering goal is to meet and exceed market demands by delivering exemplary customer service, providing comprehensive refrigeration system solutions, state-of-the-art products, and unparalleled services.
At the forefront of technological advancement, our company holds over ten national technology patents. We are dedicated to the perpetual development of high-efficiency, energy-saving, and environmentally-friendly refrigeration systems. Our product line includes high-performance refrigeration units, innovative energy-saving barrel pumps, and PLC intelligent program control boxes, reflecting our commitment to excellence.
We specialize in designing tailor-made solutions and customizing equipment for a diverse range of projects. These include food quick-freezing storage, food cold storage, ultra-low temperature cold storage, and medicine storage. Additionally, we cater to fruit and vegetable air-conditioning storage, workshop air conditioning, quick-freezing and freeze-drying processes, and advanced thawing devices, ensuring that all our clients receive optimal solutions for their unique needs.
At BINGYAN, we are passionately dedicated to offering our customers meticulously crafted and scientifically sound refrigeration system solutions. Our commitment extends to delivering exceptional engineering and unparalleled after-sales services.
Bingyan excels in providing a comprehensive suite of services that encompass sales, design, meticulous construction, and responsive after-sales support.
1. Our sales department is adept at precisely understanding and capturing the nuanced needs of our customers, ensuring seamless and precise communication of their intentions, while maintaining an open line of communication to guarantee customer satisfaction.
2. Our design department prides itself on offering expert and well-considered engineering advice, crafting reliable and innovative refrigeration plans uniquely tailored to fulfill each customer's specific requirements.
3. The engineering department approaches each construction phase with the utmost seriousness and meticulous attention to detail, striving for excellence and perfection in creating projects of the highest quality.
4. Our after-sales department is perpetually on alert, prepared and ready to ensure the ongoing 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.
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