NH3/CO2 Cascade Refrigeration System
1. Exploring the Principle of the NH3/CO2 Cascade Refrigeration System
The NH3/CO2 cascade refrigeration system ingeniously integrates two distinct temperature stages: the high-temperature stage, powered by ammonia (NH3), and the low-temperature stage, utilizing carbon dioxide (CO2) as the refrigerant. At the heart of this system lies the efficient process where the evaporation of NH3 in the high-temperature segment is skillfully employed to condense the CO2 refrigerant gas emanating from the low-temperature segment. A specially designed condensation evaporator acts as the vital link, serving both as the condenser for the low-temperature level and the evaporator for the high-temperature level, ensuring seamless integration and optimal performance.
Within this sophisticated system, the heat load is seamlessly transferred to the CO2 refrigerant through the end evaporator. The absorbed heat is then efficiently transferred to the high-temperature NH3 refrigerant via the condensing evaporator. This NH3 refrigerant, in turn, channels the heat to the high-temperature condenser, where it is released into the environment through a state-of-the-art cooling medium. Following this, the condensed CO2 enters the CO2 reservoir and is subsequently directed to the CO2 gas-liquid separator via the dryer filter and throttle valve. Thanks to the CO2 circulation pump, liquid CO2 moves to the CO2 evaporator, bypassing end cooling devices like single freezers or chillers. Post-evaporation, the two-phase CO2 returns to the gas-liquid separator, where the gaseous CO2 is efficiently compressed and directed back to the condensing evaporator, completing the entire cycle with remarkable precision.
In the NH3/CO2 cascade refrigeration system, each temperature level operates as a standalone refrigeration system utilizing a single refrigerant. The high-temperature NH3 system mirrors conventional refrigeration systems, featuring not only the refrigeration compressor but also a suite of components including the condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 system comprises a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, all working in perfect harmony to achieve exceptional refrigeration results.
The CO2 gas-liquid separator plays a pivotal role in isolating CO2 gas droplets from the evaporator within the CO2 compression refrigeration system. This critical function prevents compressor wet strokes, stabilizes liquid levels during pump operation, and effectively stores equipment and pipeline liquid return when the pump is not operational. Additionally, when acting as a CO2 reservoir during downtime, the separator's volume must accommodate all CO2 liquid in the system. An auxiliary evaporator is strategically positioned atop the gas-liquid separator to prevent excessive CO2 pressure post-shutdown. In this intricate NH3/CO2 cascade system, the condensing evaporator serves dual purposes: acting as both the NH3-side evaporator and the CO2-side condenser, efficiently converting compound liquid into gas and condensing CO2 gas into liquid within its structure.
2. Unveiling the Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Enhanced Safety by Reducing NH3 Risks:
(1.(1)) The NH3/CO2 cascade system significantly minimizes the condensing pressure of NH3, utilizing only about 1/10 of the traditional ammonia systems, thereby enhancing safety.
(1.(2)) Confining NH3 within the machine and equipment rooms ensures it is securely managed, likened to a 'tiger in a cage,' under the watchful eye of skilled professionals.
(1.(3)) This system takes full advantage of NH3's superior heat transfer capabilities in high-temperature regions, optimally cooling CO2.
(2) CO2 serves as a safe medium for personnel-heavy areas such as operational rooms and warehouses, prioritizing the protection of both individuals and assets.
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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 |
As a dedicated manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. offers bespoke solutions tailored specifically to your unique requirements. If you're uncertain about the perfect model for your needs, do not hesitate to reach out—our team is here to assist you.Our team of highly skilled professional engineers is ready to craft a personalized solution just for you. Their expertise ensures that the Electric Drive Industrial Refrigeration Equipment is perfectly optimized for your reliable cold storage needs.
Shandong Binzhou Huiyang Cold Chain Logistics Port
The project majestically spans an impressive area of 60,542 square meters, with a total construction expanse of 72,370.31 square meters. This state-of-the-art facility includes a production workshop and a vast cold storage area encompassing 65,538.50 square meters, designed to meet the rigorous demands of modern cold chain logistics.
Our company proudly presents a diverse array of premier products, including: High-Efficiency Condensing Units,Advanced Air Coolers,Innovative Evaporative Condensers,Reliable Freezers,Durable Cold Room Doors,
Insulated Cold Storage Panels, To explore further details or make inquiries, simply click on the product name or its accompanying image.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is nestled in the enchanting coastal city of Qingdao. We are a cutting-edge enterprise that integrates the realms of industrial and commercial freezing, cold storage, refrigeration systems, and equipment. From research and development to design, manufacturing, and sales, we offer comprehensive solutions at the forefront of refrigeration technology.
From the very beginning, we've been driven by the power of 'science and technology,' using it as our compass to navigate innovative pathways. 'Management' serves as our unwavering foundation, ensuring we exceed market expectations while delivering unparalleled customer service. Our mission is to provide flawless refrigeration system solutions, accompanied by top-tier products and outstanding service.
With a portfolio boasting over ten national technology patents, our dedication to innovation is relentless. We specialize in the development of high-efficiency, energy-saving, and environmentally friendly refrigeration systems. Our product lineup includes high-performance refrigeration units, energy-efficient barrel pumps, and sophisticated PLC intelligent program control boxes, all designed to elevate performance to the next level.
Our expertise primarily focuses on the bespoke design and customization of equipment for a diverse array of projects. From food quick-freezing storage and ultra-low temperature cold storage to medicine storage and fruit and vegetable air-conditioning storage, we cater to a wide spectrum of needs. Our services extend to workshop air conditioning, quick-freezing and freeze-drying processes, as well as innovative thawing devices.
BINGYAN IS DEDICATED TO DELIVERING CUSTOMERS WITH METICULOUSLY ENGINEERED REFRIGERATION SYSTEM SOLUTIONS AND EXEMPLARY ENGINEERING ALONG WITH SUPERIOR AFTER-SALES SERVICES, ENSURING TOTAL SATISFACTION.
Bingyan offers a full spectrum of services encompassing sales, design, construction, and after-sales support, each crafted to perfection to meet and exceed customer expectations.
1. Our sales department excels in accurately discerning and comprehending customer needs, adeptly conveying intentions, and fostering seamless communication, forging strong customer relationships.
2. The design department presents customers with expert and logical engineering advice, crafting dependable and enduring refrigeration plans tailored perfectly to meet individual customer requirements.
3. The engineering department approaches each construction process with diligence and precision, completing every task meticulously to achieve outstanding quality projects, always aiming for excellence.
4. The after-sales department remains ever-vigilant and prepared, ensuring continuous success for our valued customers through unwavering support.
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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