NH3/CO2 Cascade Refrigeration System
1. Understanding the NH3/CO2 Cascade Refrigeration System Principle
The NH3/CO2 cascade refrigeration system ingeniously comprises two distinct stages: a high temperature stage utilizing NH3 and a low temperature stage employing CO2. This innovative design allows NH3 evaporation in the high-temperature system to efficiently condense the CO2 refrigerant gas from the low-temperature system. A specially designed condensing evaporator seamlessly bridges these two stages, functioning as both the low-temperature condenser and the high-temperature evaporator, ensuring optimal efficiency and synergy between each stage.
In this sophisticated system, the heat load is absorbed by the CO2 refrigerant at the end evaporator stage. This absorbed heat is then transferred to the high-temperature NH3 refrigerant via the condensing evaporator. The NH3 refrigerant subsequently dispatches this heat to the high-temperature condenser, where it is released into the environment through a cooling medium. Once condensed within the condensing evaporator, CO2 moves into the CO2 reservoir before passing through a dryer filter and throttle valve into the CO2 gas-liquid separator. Here, liquid CO2 is pumped into the CO2 evaporator through a circulation pump. Post-evaporation, the resultant two-phase CO2 returns to the gas-liquid separator, while gaseous CO2 is drawn in by the compressor and compressed once more in the condensing evaporator, perpetuating this continuous and efficient refrigeration cycle.
Within the NH3/CO2 cascade system, each temperature level operates as an independent refrigeration system using a single refrigerant. The high-temperature NH3 system mirrors conventional setups, featuring not only a refrigeration compressor but also a condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 system boasts a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, all harmoniously integrated to deliver optimal cooling performance.
The CO2 gas-liquid separator plays a pivotal role in segregating CO2 gas droplets post-evaporation, thereby preventing compressor wet stroking and maintaining a stable liquid level during pump operation. It doubles as a reservoir when inactive, with sufficient volume to accommodate all CO2 liquid. An auxiliary evaporator stationed atop prevents excessive CO2 pressure during shutdowns. In the NH3/CO2 system, the condensing evaporator is both the NH3 side's evaporator and the CO2 side's condenser, enabling compound liquid evaporation and heat absorption within the tube, while concurrently condensing carbon dioxide gas into a liquid within the shell.
2. Distinct Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Minimizing NH3 Safety Risks:
(1.(1))The NH3/CO2 cascade system drastically reduces the NH3 refrigerant charge pressure to approximately 1/10 of the traditional ammonia system charge, enhancing operational safety.
(1.(2))NH3 is confined to the machine room, akin to a "tiger" securely caged, under vigilant supervision by skilled technical staff.
(1.(3))It maximizes NH3's excellent heat transfer capabilities in high-temperature regions to effectively cool CO2.
(2) Incorporating CO2 as a Medium: Essential for personnel-dense areas like single-freezing machines and warehouses, ensuring enhanced 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 a premier manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is dedicated to crafting bespoke solutions tailored precisely to your specifications. Unsure about the right model for your needs? Fear not! Simply reach out to our expert team, and we'll guide you seamlessly to the perfect fit.Our team boasts a cadre of seasoned professional engineers ready to design and deliver a personalized solution just for you. Trust in our expertise to meet and exceed your expectations.
Shandong Binzhou Huiyang Cold Chain Logistics Port
Nestled in the dynamic landscape of Shandong, the Binzhou Huiyang Cold Chain Logistics Port is a sprawling marvel covering an expansive area of 60,542 square meters. The total construction area impressively spans 72,370.31 square meters, featuring a state-of-the-art production workshop. The cold storage area alone extends over a generous 65,538.50 square meters, tailored to cater to diverse refrigeration needs.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., we take pride in offering an extensive selection of top-tier products, including high-performance Condensing Units,efficient Air Coolers,innovative Evaporative Condensers,advanced Freezers,robust Cold Room Doors,
durable Cold Storage Panels, To explore our full range of products, simply click on the product name or picture to discover more.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in the vibrant coastal city of Qingdao in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. stands as a beacon of innovation and excellence. We are a comprehensive high-tech enterprise that seamlessly integrates the research, development, design, manufacturing, and sales of industrial and commercial freezing, cold storage, and refrigeration systems and equipment.
From its very inception, our company has been steadfast in its commitment to 'science and technology' as our guiding star and 'management' as our steadfast foundation. We relentlessly strive to meet market demands and provide unparalleled customer service, aiming to deliver perfect refrigeration system solutions, products, and services to our valued clients.
Our company proudly holds over ten national technology patents, consistently dedicating itself to the innovation of high-efficiency, energy-saving, and eco-friendly refrigeration system configurations. Our product line boasts high-efficiency refrigeration units, energy-saving barrel pumps, and state-of-the-art PLC intelligent program control boxes, among others.
We specialize in program design and 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, rapid freezing and freeze-drying, as well as thawing devices.
At BINGYAN, we are wholeheartedly devoted to offering our esteemed customers meticulously crafted refrigeration system solutions. We pride ourselves on delivering not only top-notch engineering but also exceptional after-sales services that ensure enduring satisfaction and reliability.
Bingyan takes pride in offering an all-encompassing suite of services, encompassing meticulous sales, innovative design, precise construction, and unwavering after-sales support.
1. Our sales department excels in thoroughly understanding and capturing customer needs. We ensure that customer intentions are conveyed with precision and maintain robust and seamless communication with our valued clients for a tailored experience.
2. The design department is dedicated to offering our customers expert advice and crafting custom-made, dependable, and stable refrigeration plans meticulously aligned with their specific needs and requirements.
3. Our engineering department approaches each construction process with the utmost seriousness and a keen eye for detail, meticulously completing every task with a commitment to excellence, resulting in the creation of high-quality, standout projects.
4. Our after-sales department is perpetually prepared and vigilant, ensuring that our customers experience seamless success and ongoing satisfaction with our products and services.
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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