NH3/CO2 Cascade Refrigeration System
1. The Principle of NH3/CO2 Cascade Refrigeration System
Experience the cutting-edge design of the NH3/CO2 cascade refrigeration system, meticulously structured into two distinctive parts: a high-temperature stage and a low-temperature stage. The innovation begins with NH3 as the refrigerant in the high-temperature stage, seamlessly transitioning to CO2 as the refrigerant in the low-temperature stage. The process is brilliantly engineered; the evaporation of NH3 in the high-temperature level effectively condenses CO2 gas from the low-temperature level. This sophisticated system employs a condensation evaporator to flawlessly bridge the high and low-temperature stages, serving as both the condenser for the low-temperature level and the evaporator for the high-temperature level.
In this ingenious system, heat load is adeptly transferred to the CO2 refrigerant through the end evaporator. The heat journey continues as the CO2 refrigerant transfers its absorbed heat to the high-temperature NH3 refrigerant via the condensing evaporator. The high-temperature NH3 refrigerant, in turn, channels the heat to a high-temperature condenser, gracefully releasing it to the environment through a cooling medium. Once condensed, CO2 enters the CO2 reservoir, advancing through a dryer filter and throttle valve into the CO2 gas-liquid separator. Liquid CO2 is propelled to the CO2 evaporator by the CO2 circulation pump, with no end cooling device necessary (like a single freezer or chiller). Following the evaporator, two-phase CO2 finds its way back to the gas-liquid separator, where gaseous CO2 is drawn by the compressor and compressed into the condensing evaporator, perpetuating the seamless cascade refrigeration cycle.
The NH3/CO2 cascade refrigeration system ingeniously separates high and low-temperature levels, each utilizing a single refrigerant in their respective systems. The equipment is strategically divided: the high-temperature NH3 refrigeration system mirrors a conventional setup, complete with a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 refrigeration system is a marvel of engineering, boasting a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, all harmoniously orchestrated for optimal performance.
The The CO2 gas-liquid separator stands as a pivotal component, effectively isolating CO2 gas droplets from the evaporator within the CO2 compression refrigeration system. This prudent separation mitigates the risk of compressor wet stroke, maintains a stable liquid level during pump operation, and accommodates pipeline liquid return when the pump halts. If utilized as a CO2 reservoir during inactivity, the separator's volume is adeptly designed to encompass all CO2 liquid within the system. An auxiliary evaporator is strategically placed atop the gas-liquid separator, skillfully preventing excessive CO2 pressure post-shutdown. In the NH3/CO2 cascade refrigeration system, the condensing evaporator functions dually as the NH3-side evaporator and CO2-side condenser, where compound liquid evaporates and absorbs heat within the tube, culminating in the condensation of carbon dioxide gas into liquid form within the shell.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Reduced NH3 Unsafe Factors:
(1.(1)) The NH3/CO2 cascade refrigeration system significantly lowers the condensing pressure of the NH3 refrigeration medium charge, achieving a remarkable reduction to approximately 1/10 of the traditional ammonia refrigeration system charge;
(1.(2)) NH3 is securely confined to designated areas like the machine room and equipment room, akin to a 'tiger in a cage,' vigilantly monitored by skilled professionals;
(1.(3)) Capitalizing on NH3's excellent heat transfer properties in high-temperature zones, this system efficiently cools CO2.
(2) CO2 safely integrates into personnel-dense operation rooms (such as single-freezing machines) and warehouses, ensuring optimal safety for personnel 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 leading manufacturer, we proudly offer the flexibility to tailor our High-Efficiency Industrial Refrigeration Equipment for Cold Storage Solutions specifically to your needs. If you are uncertain about the ideal model for your requirements, feel free to reach out to us. Our dedicated team is at your service to guide you.Our team includes several highly skilled professional engineers, ready to design a customized solution perfectly aligned with your unique specifications and requirements.
Shandong Binzhou Huiyang Cold Chain Logistics Port
Spanning an impressive 60,542 square meters, this project boasts a total construction area of 72,370.31 square meters. It encapsulates a state-of-the-art production workshop and a vast cold storage space, with the latter covering 65,538.50 square meters, making it an ideal hub for cold chain logistics.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. proudly offers a comprehensive selection of top-tier products, including: Advanced Condensing Units,High-Performance Air Coolers,Efficient Evaporative Condensers,Reliable Freezers,Durable Cold Room Doors,
Premium Cold Storage Panels, For a closer look at our offerings, simply click on any product name or image to explore further and discover the perfect fit for your cold storage needs.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011, nestled in the spectacular coastal city of Qingdao, our company stands as a beacon of innovation in the domain of industrial and commercial refrigeration. We seamlessly integrate cutting-edge research, bespoke design, state-of-the-art manufacturing, and comprehensive sales of refrigeration systems and equipment, all under one high-tech enterprise umbrella.
From our inception, we have steadfastly embraced 'science and technology' as our guiding star, while robust 'management' ensures our response to market needs and customer satisfaction. Our unwavering commitment is to deliver impeccable refrigeration system solutions, products, and services that exceed expectations.
With over ten national technology patents, our dedication to innovation is unwavering. Our focus remains on the continuous research and development of high-efficiency, energy-saving, and environmentally friendly refrigeration systems. Our portfolio includes high-performance refrigeration units, energy-efficient barrel pumps, and sophisticated PLC intelligent program control boxes, among others.
Our expertise shines in tailor-made program design and equipment customization for a diverse range of projects. These include food rapid-freezing storage, cold storage solutions for food, ultra-low temperature storage facilities, medicinal storage, fruit and vegetable air-conditioning storage, workshop climate control, and advanced quick-freezing and freeze-drying, alongside efficient thawing devices.
At BINGYAN, we dedicate ourselves to delivering customers scientifically advanced and strategically crafted refrigeration system solutions, coupled with unparalleled engineering expertise and superior after-sales services.
Bingyan offers an all-encompassing suite of services including meticulous sales, innovative design, precision construction, and reliable after-sales support.
1. Our sales department excels in accurately discerning and fulfilling customer needs, conveying client intentions with precision, and fostering seamless communication to ensure an exceptional customer experience.
2. The design department is devoted to furnishing customers with expert, tailored engineering advice, crafting bespoke refrigeration plans that are both reliable and resilient to meet every unique requirement.
3. The engineering department approaches each construction phase with diligence and meticulous care, aiming for perfection in every task to deliver projects of superior quality.
4. Our after-sales department remains ever ready and vigilant, committed to ensuring the continued success and satisfaction of our esteemed 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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