NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle of Cascade Refrigeration System
The NH3/CO2 cascade refrigeration system ingeniously consists of two vital components: a high-temperature stage and a low-temperature stage. In this sophisticated system, NH3 is utilized as the refrigerant for the high-temperature level, while CO2 serves as the refrigerant for the low-temperature level. The brilliance of this mechanism lies in the evaporation of NH3 at the high-temperature level, which diligently condenses the CO2 refrigerant gas emanating from the low-temperature stage. An innovative condensation evaporator seamlessly merges these two stages, acting as both the condenser for the low-temperature level and the evaporator for the high-temperature level.
In this cutting-edge system, the heat load is efficiently transferred to the CO2 refrigerant through the end evaporator. CO2, having absorbed this heat, channels it to the high-temperature NH3 refrigerant via the condensing evaporator. This NH3 refrigerant, in turn, conveys the heat to the high-temperature condenser, ultimately releasing it into the environment through a cooling medium. The CO2, now condensed in the condensing evaporator, is stored in the CO2 reservoir and then directed through a dryer filter and throttle valve into the CO2 gas-liquid separator. From here, liquid CO2 is expertly propelled to the CO2 evaporator by the CO2 circulation pump (bypassing any end cooling device, like a single freezer or chiller). After the evaporator, the two-phase CO2 elegantly returns to the gas-liquid separator, where gaseous CO2 is meticulously compressed by the compressor into the condensing evaporator. This dynamic cycle continuously perpetuates the entire cascade refrigeration process.
The NH3/CO2 cascade refrigeration system, a marvel of engineering, features high and low-temperature levels that operate as independent refrigeration systems using distinct refrigerants. The architecture is divided into two sophisticated sections: the high-temperature NH3 refrigeration system mirrors traditional refrigeration systems, encompassing a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 refrigeration system is an assembly of advanced components, including a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel.
The The CO2 gas-liquid separator plays a crucial role in isolating CO2 gas droplets from the evaporator within the CO2 compression refrigeration system. This prevents compressor issues such as wet strokes, maintains a stable liquid level during pump operation, and stores liquid return from equipment and pipelines when the pump halts. If employed as a CO2 reservoir, its volume must accommodate all system CO2 liquid. Crucially, an auxiliary evaporator atop the gas-liquid separator curbs CO2 pressure post-shutdown. In the NH3/CO2 cascade system, the condensing evaporator serves dual purposes: as the NH3 side's evaporator and the CO2 side's condenser, where compound liquid evaporates and absorbs heat within the tube, while CO2 gas is condensed 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, approximately one-tenth of that in conventional ammonia refrigeration systems;
(1.(2)) NH3 is confined to the machine room and equipment room, akin to a 'tiger in a cage,' expertly managed by skilled technical personnel;
(1.(3)) This system fully capitalizes on NH3's excellent heat transfer properties at high temperatures to effectively cool CO2.
(2) CO2 as a refrigerant is strategically introduced into personnel-intensive operational areas, such as single-freezing machines and warehouses, ensuring unparalleled safety for both personnel and property.
ee8d88d6
| 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 premier manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is poised to tailor-make products that align perfectly with your distinct needs. Unsure which model will suit your specific application? Do not hesitate to reach out to us with your queries.Our team comprises highly skilled engineers dedicated to devising bespoke solutions, ensuring your requirements are met with precision and excellence.
Shandong Binzhou Huiyang Cold Chain Logistics Port
This impressive project spans a vast area of 60,542 square meters, featuring a total construction expanse of 72,370.31 square meters. It encompasses a state-of-the-art production workshop and an advanced cold storage facility, covering 65,538.50 square meters, designed to meet the highest standards of efficiency and reliability for modern logistics demands.
Our company's main products are an impressive array of cutting-edge solutions designed to meet your refrigeration needs. Condensing Units - Deliver top-level performance with efficiency that stands unparalleled.,Air Coolers - Experience unmatched cooling power tailored for any requirement.,Evaporative Condensers - Enhance your cooling processes with innovative design and reliability.,Freezers - Preserve your goods with state-of-the-art freezing technology.,Cold Room Doors - Secure and thermally efficient doors for your bespoke refrigeration needs.,
Cold Storage Panels - Insulate with precision-crafted cold storage panels for ultimate preservation., To explore our full range of products, please click on the product name or product picture to dive deeper into our offerings.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in the enchanting coastal haven of Qingdao in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is a pioneering high-tech enterprise. We integrate industrial and commercial freezing, cold storage, cutting-edge refrigeration systems, and equipment research with development design, manufacturing, and sales, all under one roof.
From its very inception, the company has been passionately driven by the ethos of 'science and technology' as its lodestar, supported firmly by 'management' as its backbone. Our unwavering mission is to fulfill market demands by delivering unparalleled customer service and providing comprehensive refrigeration system solutions, products, and services.
Boasting more than ten prestigious national technology patents, Qingdao Bingyan is steadfast in its dedication to the research and development of high-performance, energy-efficient, and eco-friendly refrigeration systems. Our innovations include cutting-edge refrigeration units, energy-saving barrel pumps, and PLC intelligent program control boxes, among others.
Our expertise shines in the program design and bespoke equipment customization for a diverse range of projects. These include food quick-freezing storage, food cold storage, ultra-low temperature cold storage, pharmaceutical storage, fruit and vegetable air-conditioning storage, workshop air conditioning, as well as advanced quick-freezing, freeze-drying, and thawing devices.
BINGYAN IS DEDICATED TO PROVIDING CUSTOMERS WITH CUTTING-EDGE REFRIGERATION SYSTEM SOLUTIONS. WE DELIVER NOT ONLY SCIENTIFICALLY-ENGINEERED, REASONABLE SOLUTIONS BUT ALSO EXCEPTIONAL ENGINEERING AND TOP-NOTCH AFTER-SALES SERVICE.
Bingyan offers a full suite of services encompassing sales, design, construction, and after-sales support, ensuring seamless customer satisfaction.
1. Our sales department expertly discerns customer needs and communicates these intentions with precision, ensuring continuous and effective dialogue with our clients.
2. The design department provides specialized and sensible engineering advice, crafting customized, stable, and reliable refrigeration plans tailored to each client's requirements.
3. Our engineering department meticulously executes every construction task, taking each step seriously to ensure excellence and deliver superior quality projects.
4. The after-sales department remains ever-ready and vigilant, guaranteeing unwavering support and success for 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.
Audited Supplier 
){kind=link}