NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle of Cascade Refrigeration System
The NH3/CO2 cascade refrigeration system is an innovative marvel composed of two distinct stages: high temperature and low temperature. The high temperature stage employs NH3 as the refrigerant, providing an efficient cooling mechanism, while the low temperature stage uses CO2. In this harmonious system, the evaporation of NH3 in the high temperature stage masterfully condenses the CO2 gas from the low temperature stage. To seamlessly integrate these stages, a unique condensation evaporator is employed, serving as both the condenser for the low temperature level and the evaporator for the high temperature level, ensuring optimal thermal exchange and energy efficiency.
At the heart of this system, the heat load is expertly transferred to the CO2 refrigerant through the end evaporator. This absorbed heat is then efficiently channeled to the high-temperature NH3 refrigerant via the condensing evaporator. The high-temperature NH3 refrigerant flawlessly transfers this heat to the high-temperature condenser, where it is finally released to the environment through an advanced cooling medium. The condensed CO2 is collected in the CO2 reservoir before passing through a dryer filter and throttle valve into the CO2 gas-liquid separator. Here, the liquid CO2 is propelled to the CO2 evaporator by a specialized CO2 circulation pump. Following the evaporation, the two-phase CO2 returns to the gas-liquid separator, where the gaseous CO2 is expertly compressed by the compressor and fed back into the condensing evaporator. This efficient cycle perpetuates, completing the cascade refrigeration cycle with remarkable precision.
Within the NH3/CO2 cascade refrigeration system, the high and low temperature levels operate as independent refrigeration systems, each utilizing a single refrigerant. This sophisticated system is divided into two segments: the high-temperature NH3 refrigeration system, mirroring conventional systems, includes not only the refrigeration compressor but also a condenser, liquid storage, gas-liquid separator, and throttling device. The low temperature CO2 refrigeration system is equally comprehensive, featuring a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and an expansion vessel, all working in concert to deliver optimal performance.
The CO2 gas-liquid separator plays a pivotal role in maintaining the efficiency of the CO2 compression refrigeration system. It expertly separates CO2 gas droplets from the evaporator to prevent wet strokes in the compressor, ensures a stable liquid level during pump operation, and efficiently stores return liquid from end equipment and pipelines when the pump ceases operation. If utilized as a reservoir when inactive, its volume must accommodate the entire CO2 liquid content in the system. Additionally, an auxiliary evaporator should be mounted atop the gas-liquid separator to prevent excessive CO2 pressure post-shutdown. Within the NH3/CO2 cascade system, the condensing evaporator serves a dual role: it acts as the NH3 side's evaporator and the CO2 side's condenser, where the compound liquid evaporatively absorbs heat within the tube, while carbon dioxide gas condenses into a liquid in the shell.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Enhanced Safety by Reducing NH3 Risks:
(1.(1)) The innovative NH3/CO2 cascade system significantly minimizes the condensing pressure of the NH3 charge, reducing it to approximately 1/10th of the conventional ammonia refrigeration system's charge.
(1.(2)) NH3 is strategically confined to the machine and equipment rooms, metaphorically 'caging the tiger,' where it is vigilantly monitored by professional and technical personnel to ensure safety.
(1.(3)) This system takes full advantage of NH3's excellent heat transfer properties in the high-temperature region, effectively utilizing it to cool CO2.
(2) CO2 is safely introduced as a medium into areas with high personnel presence, such as single-freezing machines and warehouses, ensuring the safety of both individuals and property.
9562b184
| 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 |
Proudly rooted in Qingdao, Bingyan Refrigeration Equipment Co., Ltd. stands at the forefront of innovation in the dynamic world of refrigeration. As a premier manufacturer, our expertise lies in crafting bespoke solutions tailored precisely to your distinct needs. Whether you're contemplating which model aligns perfectly with your requirements, or navigating the complexities of choice, our dedicated team is just a message away to guide you seamlessly through the decision-making process.With a wealth of experience and expertise, our team of highly skilled professional engineers is ready to devise a personalized and optimized solution just for you. Trust us to deliver a custom experience that meets your specifications and exceeds your expectations.
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This remarkable project spans an impressive 60,542 square meters, with a total construction area reaching 72,370.31 square meters. It boasts a cutting-edge production workshop and a state-of-the-art cold storage area covering 65,538.50 square meters, ensuring optimal efficiency and performance.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., we proudly offer a wide array of premium products including: State-of-the-Art Condensing Units,High-Efficiency Air Coolers,Innovative Evaporative Condensers,Reliable Freezers,Durable Cold Room Doors,
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Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in the picturesque coastal haven of Qingdao in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is a pioneering high-tech enterprise seamlessly blending industrial and commercial freezing, cold storage, refrigeration systems, and innovative equipment design, manufacture, and sales.
Since its inception, the company has zealously upheld the ethos of 'science and technology' as its guiding light, with 'management' as its pillar. This dedication propels us to meet market demands while offering exemplary customer service, aiming to deliver impeccable refrigeration system solutions, state-of-the-art products, and unrivaled services.
With an impressive repertoire of over ten national technology patents, our ongoing commitment is centered on researching and developing cutting-edge, energy-efficient, environmentally-friendly refrigeration systems. Our offerings include high-efficiency refrigeration units, energy-saving barrel pumps, and sophisticated PLC intelligent program control boxes, among others.
Our expertise shines in program design and tailoring equipment for a variety of projects, including rapid food freezing storage, commercial food cold storage, ultra-low temperature preservation, pharmaceutical storage solutions, fruit and vegetable air-conditioning storage, industrial workshop air conditioning, as well as quick-freezing, freeze-drying, and thawing devices.
At BINGYAN, we passionately dedicate ourselves to delivering top-notch, scientifically-backed refrigeration system solutions that meet your every need. Our commitment extends beyond quality engineering to impeccable after-sales services, ensuring a seamless experience from start to finish.
Bingyan offers a holistic array of services that encompass every stage of your journey with us: from insightful sales and innovative design to meticulous construction and robust after-sales support.
1. Our sales department excels in precisely grasping and interpreting customer needs. We ensure your requirements are communicated with clarity and maintain an open channel for close interaction, fostering strong customer relationships.
2. Our design department is adept at offering expert and tailored engineering advice. We meticulously craft reliable and stable refrigeration plans, ensuring they align perfectly with your specific requirements.
3. When it comes to construction, our engineering department commits to unparalleled excellence. Every step in the process is handled with the utmost precision, culminating in projects of the highest quality.
4. Our after-sales department stands ready and vigilant, ensuring your success is guaranteed at all times with dedicated support and swift problem resolution.
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.
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A: Sure,welcome to you visit our factory at any time.
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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.
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