NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Ingenious Principle Behind the Cascade Refrigeration System
The NH3/CO2 cascade refrigeration system is a marvel of engineering, divided into two distinct sections: the high-temperature stage utilizing NH3 and the low-temperature stage employing CO2. In this ingenious setup, the evaporative process of NH3 at the high-temperature stage efficiently condenses the CO2 refrigerant gas from the low-temperature stage. Connecting these stages is a condensation evaporator, serving a dual purpose as both the condenser for the lower stage and the evaporator for the upper stage.
Heat transfer within the system is a seamless orchestration. The CO2 refrigerant, absorbing heat through the end evaporator, hands it over to the high-temperature NH3 refrigerant via the condensing evaporator. This NH3 refrigerant then delivers the dissipated heat to the high-temperature condenser, releasing it into the environment with the help of a cooling medium. Post-condensation, the CO2 finds its way to the CO2 reservoir, moving through a dryer filter and throttle valve, reaching the gas-liquid separator. Liquid CO2 is propelled to the CO2 evaporator by a circulation pump. Post-evaporation, the two-phase CO2 returns to the gas-liquid separator, while the gaseous CO2 is captured by the compressor, recompressed into the condensing evaporator—thereby completing the relentless cycle of refrigeration.
In this NH3/CO2 cascade refrigeration framework, both temperature stages are independent systems using singular refrigerants. The high-temperature NH3 system mirrors traditional systems, comprising a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and throttling device. The low-temperature CO2 system is equally robust, including a compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling mechanism, evaporator, and expansion vessel.
The The CO2 gas-liquid separator plays a crucial role in segregating CO2 gas droplets post-evaporation in the CO2 compression refrigeration cycle. This prevents compressor wet strokes, maintains liquid level stability during pump operations, and accommodates liquid returns upon pump shutdown. If used as a CO2 reservoir during non-operation, it must hold the entire system's CO2 liquid. Additionally, an auxiliary evaporator atop the separator ensures no pressure build-up post-shutdown. Within the NH3/CO2 cascade system, the condensing evaporator functions dually as an NH3-side evaporator and a CO2-side condenser, where the compound liquid evaporates and absorbs heat in the tube, while CO2 gas is liquefied in the shell.
2. Unveiling the Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Mitigated NH3 Safety Concerns:
(1.(1))The NH3/CO2 cascade refrigeration system remarkably reduces NH3's condensing pressure to approximately 1/10th of traditional systems, ensuring enhanced safety.
(1.(2))NH3 is securely contained within the machine and equipment rooms, akin to a 'tiger' safely enclosed in a 'cage,' monitored by skilled professionals.
(1.(3))Optimally harnesses NH3's superior heat transfer capabilities in high-temperature regions to efficiently cool CO2.
(2) CO2 Safeguards Personnel Safety: With CO2 employed as a medium in high-traffic areas like operation rooms and warehouses, it ensures 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 |
As the proud manufacturers of premium cold storage solutions, Qingdao Bingyan Refrigeration Equipment Co., Ltd. takes customization to the next level. We craft tailored products precisely attuned to your unique requirements. Should you be uncertain about the perfect model, simply reach out to us.Our team boasts several seasoned professional engineers ready to devise a bespoke solution tailored just for you.
Shandong Binzhou Huiyang Cold Chain Logistics Port
This remarkable project spans an impressive 60,542 square meters, with a total construction expanse reaching up to 72,370.31 square meters. It boasts a modern production workshop and a meticulously designed cold storage area that covers a vast 65,538.50 square meters, ensuring top-tier functionality and efficiency.
Our company's flagship products include the following innovative solutions: High-Efficiency Condensing Units,Advanced Air Coolers,Cutting-Edge Evaporative Condensers,State-of-the-Art Freezers,Premium Cold Room Doors,
Durable Cold Storage Panels, For more detailed information about our extensive product line, please click on the product name or product image.
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 the realm of industrial and commercial freezing solutions. We specialize in the comprehensive development, design, manufacturing, and sales of cutting-edge refrigeration systems and equipment, embodying the spirit of a high-tech enterprise.
From the very beginning, we have embraced the guiding principle of 'science and technology', seamlessly coupled with the foundation of 'management', to bridge the gap between market demands and customer satisfaction. Our unwavering mission is to deliver flawless refrigeration system solutions, products, and services that exceed expectations.
Our company boasts an impressive portfolio of more than ten national technology patents. We are steadfastly dedicated to the research and development of high-efficiency, energy-saving, and environmentally-friendly refrigeration system configurations. Our offerings include advanced high-efficiency refrigeration units, energy-conserving barrel pumps, and sophisticated PLC intelligent program control boxes, setting industry benchmarks.
Our expertise lies in the tailored design and customization of equipment for a diverse array of projects. These include food quick-freezing storage, food cold storage, ultra-low temperature cold storage, pharmaceutical storage solutions, fruit and vegetable air-conditioning storage, workshop air conditioning systems, quick-freezing and freeze-drying technologies, and thawing devices. We are committed to offering bespoke solutions that meet the unique needs of each project.
Bingyan is passionately dedicated to offering customers scientifically sound and meticulously crafted refrigeration system solutions, complemented by top-tier engineering and unparalleled after-sales support.
Bingyan offers a holistic suite of services encompassing sales, design, construction, and comprehensive after-sales support, ensuring a seamless experience from start to finish.
1. Our sales department excels in precisely discerning and grasping customer needs, adeptly conveying their intentions, and maintaining a continuous, open line of communication to ensure satisfaction.
2. Our design department is committed to delivering insightful and professional engineering advice, meticulously crafting dependable and robust refrigeration plans tailored to the unique requirements of each customer.
3. Our engineering department approaches every construction process with precision and diligence, meticulously executing each task to perfection, in pursuit of the highest standards of quality excellence.
4. Our after-sales department is ever-ready and on standby, poised to guarantee 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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