NH3/CO2 Cascade Refrigeration System
1. The Ingenious Principle of NH3/CO2 Cascade Refrigeration System
The NH3/CO2 cascade refrigeration system is a marvel of engineering, masterfully comprising two integral stages: the high-temperature stage with NH3 as the refrigerant, and the low-temperature stage utilizing CO2 as the refrigerant. In this sophisticated system, the evaporation of the refrigerant NH3 in the high-temperature level is ingeniously used to condense the refrigerant gas CO2 that is discharged from the low-temperature level. A specially designed condensation evaporator serves as a crucial link between the two stages, acting both as the condenser for the low-temperature level and the evaporator for the high-temperature level.
Within this dynamic process, the heat load is effectively transferred to the CO2 refrigerant through the end evaporator. The heat absorbed by the CO2 refrigerant is efficiently transferred to the high-temperature NH3 refrigerant through the condensing evaporator. The high-temperature NH3 refrigerant then performs the final act of heat transfer to the high-temperature condenser, releasing it to the environment via a cooling medium. After condensation, the CO2 enters a reservoir, then moves through a gas-liquid separator via a dryer filter and throttle valve. The liquid CO2 is propelled to the evaporator through a dedicated CO2 circulation pump, completing a seamless cycle back to the gas-liquid separator, where the gaseous CO2 is compressed into the condensing evaporator, maintaining the continuous cascade refrigeration cycle.
In this NH3/CO2 cascade refrigeration marvel, both temperature levels feature single refrigerant systems. The high-temperature NH3 refrigeration system mirrors a conventional setup with additional components like a compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 system includes a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and an expansion vessel, collectively forming an advanced refrigeration synergy.
The The CO2 gas-liquid separator is ingeniously designed to meticulously separate CO2 gas droplets from the evaporator within the CO2 compression refrigeration system. This prevents compressor wet stroke, maintains liquid stability during pump operation, and stores liquid from end equipment and pipelines when the pump ceases. If the gas-liquid separator functions as a CO2 reservoir when inactive, it must accommodate all CO2 liquid. An auxiliary evaporator atop the gas-liquid separator effectively prevents excess CO2 pressure post-shutdown. Uniquely, in the NH3/CO2 cascade system, the condensing evaporator operates as both the NH3 evaporator and CO2 condenser, facilitating compound liquid evaporation and heat absorption within the tubes, while carbon dioxide gas transitions to liquid within the shell.
2. Exceptional Advantages of NH3/CO2 Cascade Refrigeration System
(1) Minimization of NH3-related Risks:
(1.(1)) The NH3/CO2 cascade system significantly lessens the condensing pressure of the NH3 medium, approximately a mere 1/10 of traditional ammonia systems, elevating safety to new heights.
(1.(2)) NH3 is expertly confined within machine and equipment rooms, akin to a 'tiger' safely enclosed in its 'cage,' under the vigilant watch of skilled technicians.
(1.(3)) It fully exploits NH3's excellent heat transfer properties within the high-temperature region to efficiently cool CO2.
(2) CO2 seamlessly integrates into personnel-dense operation zones, such as single-freezing machines and warehouses, ensuring the utmost safety for 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 |
We are a dedicated manufacturer, specializing in tailoring products to perfectly match your unique requirements. Unsure which model aligns with your needs? Simply reach out to us, and we'll guide you to the ideal choice.Our team includes several highly skilled professional engineers, ready to craft a personalized and custom solution that meets your specific needs and aspirations.
Shandong Binzhou Huiyang Cold Chain Logistics Port
This impressive project spans a vast area of 60,542 square meters, with an awe-inspiring total construction span of 72,370.31 square meters. The facility boasts a specialized production workshop and an expansive cold storage section covering 65,538.50 square meters, designed meticulously for efficient and large-scale operations.
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Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in the picturesque coastal city of Qingdao in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. stands as a beacon of innovation in high-tech industry sectors. Our expertise spans across the realms of industrial and commercial freezing, sophisticated cold storage systems, and state-of-the-art refrigeration equipment. We combine cutting-edge research, dynamic design, top-notch manufacturing, and efficient sales, all under one roof, ensuring our esteemed clientele receives nothing but the best.
From our inception, guiding our journey is our unwavering commitment to 'science and technology' as our compass, bolstered by meticulous 'management' practices. We strive to exceed market expectations by offering unparalleled customer service, crafting flawless refrigeration system solutions, and delivering exceptional products and services.
Boasting a portfolio of over ten national technology patents, our company is devoted to the relentless pursuit of research and development. We focus on creating high-efficiency, energy-saving, and eco-friendly refrigeration systems, complemented by our innovative high-performance refrigeration units, energy-efficient barrel pumps, and advanced PLC intelligent program control boxes, positioning us at the forefront of technological advancement.
Our comprehensive services cater to bespoke program design and equipment customization for a diverse array of projects. These include food quick-freezing storage, food cold storage, ultra-low temperature cold storage, pharmaceutical storage, fruit and vegetable air-conditioning storage, workshop air conditioning, as well as quick-freezing, freeze-drying, and thawing devices. Each solution is tailored to meet the specific needs of our discerning customers, ensuring optimal performance and satisfaction.
BINGYAN IS DEDICATED TO DELIVERING CUSTOMERS SCIENTIFICALLY DESIGNED AND REASONABLY PRICED REFRIGERATION SYSTEM SOLUTIONS, COMPLEMENTED WITH FIRST-RATE ENGINEERING AND UNRIVALED AFTER-SALES SUPPORT.
At Bingyan, we pride ourselves on offering an all-encompassing service portfolio that spans sales, innovative design, meticulous construction, and diligent after-sales support.
1. Our sales department excels at discerning customer needs with precision, conveying customer intentions accurately, and fostering seamless and ongoing communication with our valued clients.
2. The design department excels in crafting tailored engineering solutions, offering expert and rational recommendations, ensuring each refrigeration plan is custom-fit to meet customers' unique requirements.
3. The engineering department meticulously handles every construction phase with utmost diligence, aiming for nothing less than excellence to deliver projects of the highest caliber.
4. Our after-sales department remains ever-ready and vigilant, poised to secure the continued success and satisfaction of our customers at any moment.
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.
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.
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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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