NH3/CO2 Cascade Refrigeration System
1. The Principle of NH3/CO2 Cascade Refrigeration System
The NH3/CO2 cascade refrigeration system ingeniously integrates a dual-stage cooling process to achieve superior efficiency. It consists of a high-temperature stage using NH3 as the refrigerant, and a low-temperature stage leveraging CO2. Here, the evaporative cooling of NH3 at the high-temperature level facilitates the condensation of CO2 gas from the low-temperature stage. Uniting these stages is the dual-purpose condensation evaporator, serving both as the condenser for CO2 and the evaporator for NH3, delivering a seamless transition and optimized cooling performance.
The sophisticated heat transfer process begins with the CO2 refrigerant absorbing thermal load from the end evaporator. This absorbed heat is then efficiently transferred to the NH3 refrigerant via the condensing evaporator. Subsequently, NH3 dissipates the heat to the environment through a state-of-the-art high-temperature condenser, using a cooling medium. The liquefied CO2 moves to a CO2 reservoir, and subsequently passes through a dryer filter and throttle valve into the CO2 gas-liquid separator. From here, a CO2 circulation pump propels the liquid CO2 into the evaporator, sans any endpoint cooling devices like a freezer or chiller. The resultant two-phase CO2 then returns to the gas-liquid separator. The gaseous CO2 is drawn by the compressor, compressed, and cycled back into the condensing evaporator. This meticulously designed cycle ensures a consistent and effective cascade refrigeration process.
Within the NH3/CO2 cascade refrigeration system, each temperature level operates as an independent refrigeration unit with a single refrigerant, each with its unique equipment composition. The high-temperature NH3 system mimics a conventional setup, comprising a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 system is equipped with a CO2 compressor, sophisticated condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, ensuring comprehensive refrigeration capabilities.
The The CO2 gas-liquid separator is a critical component, meticulously designed to eliminate CO2 gas droplets from the evaporator, preventing compressor wet strokes. It maintains a stable liquid level as the pump operates and efficiently stores liquid return when the pump halts. If used as a CO2 reservoir when idle, its capacity must accommodate all system CO2 liquid. Additionally, an auxiliary evaporator is incorporated atop the gas-liquid separator to avert excessive CO2 pressure post-shutdown. Within the NH3/CO2 cascade system, the condensing evaporator doubles as an NH3 evaporator and a CO2 condenser, effectively facilitating heat absorption and transforming carbon dioxide gas into liquid.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Enhanced Safety with Reduced NH3 Risks:
(1.(1)) This advanced NH3/CO2 cascade system significantly minimizes NH3 condensing pressure to roughly one-tenth of the traditional ammonia systems, thereby enhancing safety.
(1.(2)) NH3 confinement to the machine room and equipment area is akin to securing a 'tiger in a cage,' under vigilant supervision by technical professionals, ensuring maximum safety.
(1.(3)) Optimal use of NH3 in high-temperature zones leverages its excellent heat transfer properties to efficiently cool CO2.
(2) CO2 Usage for Safety in Personnel-Dense Areas: CO2, as a medium, is safely integrated into areas like single-freezing machines and warehouses, ensuring the utmost safety for personnel and property alike.
bfd2098d
| 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. takes pride in offering bespoke solutions tailored to your specific needs. Unsure about which model fits your requirements? Simply send us a message, and we'll guide you to the perfect choice.Our team of expert engineers is here to craft a personalized solution that meets your unique demands with precision and expertise.
Project Location: Shandong Binzhou Huiyang Cold Chain Logistics Port
Spanning a vast 60,542 square meters, this ambitious project boasts a remarkable total construction area of 72,370.31 square meters. Within this expanse, the production workshop and cold storage area alone dominate a substantial 65,538.50 square meters, showcasing cutting-edge design and efficiency.
Our company's main products are Condensing units,Air Cooler,Evaporative condenser,Freezer,Cold Room Doors,
Cold storage panels, To explore our extensive range further, please click on any product name or image to delve into detailed information and discover unparalleled quality and performance.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in 2011, and nestled in the picturesque coastal city of Qingdao, Qingdao Bingyan Refrigeration Equipment Co., Ltd. stands as a beacon of innovation and excellence. We are a cutting-edge high-tech enterprise, fusing industrial and commercial freezing with cold storage, refrigeration systems, and advanced refrigeration equipment research, design, manufacturing, and sales.
From our very inception, we have steadfastly embraced 'science and technology' as our guiding light and 'management' as our stalwart guarantee. Our mission is to exceed market expectations and deliver unparalleled customer service. We aim to provide impeccable refrigeration system solutions, premium products, and exceptional services.
With an impressive portfolio of over ten national technology patents, our company is relentlessly dedicated to the research and development of high-efficiency, energy-saving, and eco-friendly refrigeration systems. Our offerings include high-performance refrigeration units, energy-efficient barrel pumps, and cutting-edge PLC intelligent program control boxes, all designed to optimize your refrigeration needs.
Our expertise primarily lies in the 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, medicine storage, and fruit and vegetable air-conditioning storage. We also specialize in workshop air conditioning, quick-freezing and freeze-drying solutions, and advanced thawing devices, ensuring tailored solutions for every need.
BINGYAN IS COMMITTED TO PROVIDING CUSTOMERS WITH SCIENTIFIC AND REASONABLE REFRIGERATION SYSTEM SOLUTIONS, AS WELL AS HIGH-QUALITY ENGINEERING AND AFTER-SALES SERVICES.
Bingyan provides a wide array of comprehensive services, encompassing everything from sales and design to meticulous construction and unparalleled after-sales service.
1. Our sales department is dedicated to precisely understanding customer needs, adeptly conveying customer intentions, and maintaining seamless, ongoing communication with our valued clients.
2. The design department offers expert and thoughtful engineering advice, crafting customized, dependable, and stable refrigeration plans tailored specifically to meet the unique needs of each customer.
3. Our engineering department approaches every construction process with seriousness and precision, meticulously completing each task and striving for excellence to deliver projects of the highest quality.
4. The after-sales department stands ever-ready and vigilant to ensure that our customers' experience success at every stage.
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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