NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle of Cascade Refrigeration System
The NH3/CO2 cascade refrigeration system is ingeniously comprised of two integral stages: the high temperature stage which employs NH3 as the refrigerant, and a low temperature stage utilizing CO2. The brilliance lies in the evaporation of NH3 within the high temperature system, which facilitates the condensation of CO2 refrigerant gas emanating from the low temperature system. This seamless connection is achieved through a condensation evaporator which ingeniously serves as the condenser for the CO2 and the evaporator for the NH3, merging both the high and low temperature stages into a beautifully synchronized system.
The heat load is elegantly transferred to the CO2 refrigerant via the end evaporator, following which the heat absorbed by CO2 makes its way to the high-temperature NH3 refrigerant through the condensing evaporator. Subsequently, the high-temperature NH3 refrigerant efficiently transfers this heat to the high-temperature condenser, releasing it gracefully to the environment via a cooling medium. The condensed CO2 then travels to the CO2 reservoir and proceeds to the CO2 gas-liquid separator through a meticulous process involving a dryer filter and throttle valve. The liquid CO2 is then elegantly sent to the CO2 evaporator by the CO2 circulation pump, absent of any end cooling device like single freezers or chillers. From here, the two-phase CO2 returns to the gas-liquid separator, where the gaseous CO2 is expertly drawn in by the compressor and compressed back into the condensing evaporator. This majestic cycle repeats to complete the cascade refrigeration cycle in its entirety.
In the NH3/CO2 cascade refrigeration system, the high and low temperature levels operate as distinct systems, each employing a singular refrigerant. The high-temperature NH3 refrigeration system mirrors a conventional setup, comprising a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and a throttling device. Meanwhile, the low-temperature CO2 refrigeration system includes a CO2 compressor and other integral components like a condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, creating a harmonious blend of advanced refrigeration technology.
The The CO2 gas-liquid separator is an essential component that ensures the seamless separation of CO2 gas droplets from the evaporator within the CO2 compression refrigeration system. This process is crucial to avoid wet strokes of the compressor and to maintain a stable liquid level during pump operation. It also serves to store end equipment and pipeline liquid return when the pump ceases operation. When utilized as a reservoir during downtime, the separator's volume is designed to accommodate the entire CO2 liquid content of the system. In addition, an auxiliary evaporator is strategically positioned atop the gas-liquid separator to effectively manage CO2 pressure and prevent excessive pressure buildup post-shutdown. Within the NH3/CO2 cascade refrigeration system, the condensing evaporator plays a dual role as both the NH3 evaporator and the CO2 condenser, with the compound liquid evaporating and absorbing heat within the tubes as CO2 gas is transformed into liquid in the shell.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Reduced NH3 Safety Concerns:
(1.(1)) The NH3/CO2 cascade refrigeration system significantly minimizes the condensing pressure of the NH3 refrigerant charge, achieving a reduction to approximately 1/10 of the traditional ammonia refrigeration system charge.
(1.(2)) NH3 is confined to the machine room and equipment room, akin to a 'tiger' securely caged and vigilantly monitored by skilled professionals.
(1.(3)) This system fully capitalizes on the excellent heat transfer characteristics of NH3 in high-temperature regions, utilizing it to efficiently cool CO2.
(2) CO2 is safely utilized as a medium within personnel-intensive environments, such as single-freezing machines and warehouses, thereby ensuring the utmost safety of both personnel and property.
ed1b0e5f
| 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 and innovative manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. excels in tailoring products to perfectly match your unique specifications. Should you find yourself uncertain about the ideal model for your needs, we encourage you to reach out and send us a message. Our team is here to guide you every step of the way.With a team of several highly skilled professional engineers, we specialize in crafting bespoke solutions that are meticulously designed to meet your precise requirements.
Shandong Binzhou Huiyang Cold Chain Logistics Port
Spanning an impressive 60,542 square meters, this project boasts a massive total construction area of 72,370.31 square meters. This includes a state-of-the-art production workshop and a vast cold storage facility covering 65,538.50 square meters, designed to enhance efficiency and logistics capabilities.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. proudly presents our flagship line of superior quality refrigeration products: High-Efficiency Condensing Units,Advanced Air Coolers,Innovative Evaporative Condensers,State-of-the-Art Freezers,Durable Cold Room Doors,
High-Performance Cold Storage Panels, To explore our full product line and uncover more details, simply click on the product name or image. Your journey to discovering exceptional quality starts here!
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 and excellence. We are a premier high-tech enterprise specializing in the integration of industrial and commercial freezing, cold storage solutions, and cutting-edge refrigeration systems. Our expertise spans from research and development to design, manufacturing, and sales, making us a one-stop solution for all your refrigeration needs.
Since our inception, we have steadfastly embraced 'science and technology' as our guiding light. Supported by robust 'management' strategies, we are committed to meeting the ever-evolving market demands and exceeding customer expectations. Our aim is to deliver impeccable refrigeration system solutions, top-tier products, and unparalleled services, ensuring complete customer satisfaction every step of the way.
Our company is proud to hold over ten national technology patents, reflecting our dedication to innovation. We continuously invest in the research and development of high-efficiency, energy-saving, and eco-friendly refrigeration systems. Our offerings include state-of-the-art refrigeration units, energy-efficient barrel pumps, and advanced PLC intelligent program control boxes, all designed to optimize performance and sustainability.
We specialize in crafting bespoke program designs and equipment tailored for diverse projects. Our expertise covers areas such as food quick-freezing storage, food cold storage, ultra-low temperature cold storage, medicine storage, and fruit and vegetable air-conditioning storage. Additionally, we provide comprehensive solutions for workshop air conditioning, quick-freezing, freeze-drying, and thawing devices, ensuring optimal efficiency and reliability across all applications.
BINGYAN IS DEDICATED TO DELIVERING INNOVATIVE AND WELL-THOUGHT-OUT REFRIGERATION SYSTEM SOLUTIONS. WE PRIDE OURSELVES ON OFFERING EXEMPLARY ENGINEERING AND UNPARALLELED AFTER-SALES SERVICES TO OUR ESTEEMED CUSTOMERS.
Bingyan offers a full spectrum of services encompassing sales, design, construction, and steadfast after-sales support, ensuring a seamless experience for every client.
1. The sales department is adept at precisely discerning and comprehending customer needs, ensuring clear communication of customer intentions, and fostering ongoing, transparent dialogue with them.
2. Our design department excels in providing expert and pragmatic engineering recommendations, crafting bespoke and dependable refrigeration plans tailored to meet each customer's unique requirements.
3. The engineering department approaches each construction process with utmost diligence, ensuring meticulous attention to detail and a commitment to excellence in delivering superior quality projects.
4. Our after-sales department is perpetually prepared and on alert, dedicated to supporting the success of our customers at every turn.
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.
Audited Supplier 
){kind=link}