NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle of Cascade Refrigeration System
NH3/CO2 cascade refrigeration represents a sophisticated two-stage system: a high-temperature stage employing NH3 as the refrigerant, and a low-temperature stage utilizing CO2. In this setup, NH3 evaporates at the high temperature level, condensing the CO2 gas from the low temperature level. An ingenious condensation evaporator bridges the high and low stages, functioning dually as the condenser for low temperatures and the evaporator for high temperatures.
In the cascade refrigeration system, the heat load is adeptly transferred to the CO2 refrigerant via the end evaporator. The absorbed heat is then channeled to the high-temperature NH3 refrigerant through the condensing evaporator. Subsequently, the high-temperature NH3 releases this heat to the environment through the condenser. Condensed CO2 moves to the CO2 reservoir and proceeds to the gas-liquid separator, passing through the dryer filter and throttle valve. Liquid CO2 is pumped to the evaporator, with the cycle repeating seamlessly: two-phase CO2 returns to the separator, gaseous CO2 is compressed, and the cycle recommences, ensuring efficient operation.
NH3/CO2 cascades employ two distinct refrigeration systems, with each stage using a single refrigerant. High-temperature NH3 systems mirror conventional setups, featuring compressors, condensers, storage, separators, and throttling devices. The low-temperature CO2 system integrates a compressor, condensing evaporator, reservoir, separator, dryer, pump, throttling device, evaporator, and expansion vessel.
The The CO2 gas-liquid separator plays a pivotal role in filtering droplets from the evaporator, safeguarding the compressor against wet strokes, and stabilizing the liquid level during pump operation. It acts as a reservoir during downtime, capable of storing all system CO2 liquid, while an auxiliary evaporator mitigates pressure spikes post-shutdown. In NH3/CO2 systems, the condensing evaporator serves a dual role, facilitating liquefaction of CO2 gas while concurrently acting as an NH3 evaporator.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Significantly Reduced NH3 Safety Hazards:
(1.(1)) The NH3/CO2 system drastically lowers NH3 condensing pressure, reducing it to approximately 1/10 of traditional systems, enhancing safety.
(1.(2)) NH3 is confined within the machinery and equipment rooms, akin to a "tiger" securely caged, under the vigilant watch of skilled professionals.
(1.(3)) Optimizes the excellent heat transfer capabilities of NH3 in high-temperature areas to efficiently cool CO2.
(2) CO2 integration into high-traffic operation rooms and storage areas ensures the safety of both personnel and property, making it ideal for facilities like single-freezing machines.
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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 distinguished manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. proudly offers customization of our products to perfectly align with your specific requirements. If you're uncertain about selecting the ideal model from our innovative lineup, feel free to reach out to us. Our expert team is here to guide you every step of the way.Our team comprises several highly skilled engineers, dedicated to crafting personalized solutions tailored just for you. With their expertise, your product will embody precision, efficiency, and reliability.
The Majestic Shandong Binzhou Huiyang Cold Chain Logistics Hub
Spanning a vast 60,542 square meters, this state-of-the-art project boasts a total construction area of 72,370.31 square meters. It includes a cutting-edge production workshop and a substantial cold storage facility that stretches over 65,538.50 square meters, designed to meet all your refrigeration needs.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., we proudly present our flagship and expertly crafted products, which include: Efficient and Reliable Condensing Units,Top-notch Air Coolers,Innovative Evaporative Condensers,High-Performance Freezers,Durable Cold Room Doors,
Advanced Cold Storage Panels, For an in-depth exploration of our diverse range of products, please click on the respective product name or image to discover more.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. graces the picturesque coastal city of Qingdao. We excel as a high-tech enterprise, seamlessly integrating industrial and commercial freezing and cold storage solutions, alongside cutting-edge refrigeration systems. Our expertise spans the entire spectrum—from research and development, through design and manufacturing, to sales.
Since our inception, we have steadfastly embraced 'science and technology' as our guiding light, coupled with 'management' as our unwavering assurance. Our mission is to meet market demands with unparalleled customer service, delivering perfect refrigeration system solutions, superior products, and services.
Proudly holding over ten national technology patents, our company is dedicated to the perpetual pursuit of innovation. We specialize in the research and development of high-efficiency, energy-saving, and environmentally friendly refrigeration systems. Our repertoire includes advanced refrigeration units, energy-efficient barrel pumps, and PLC intelligent program control boxes, among other revolutionary technologies.
Our expertise shines in crafting bespoke program designs and equipment customizations for diverse projects. We cater to needs such as food quick-freezing storage, food cold storage, ultra-low temperature cold storage, and medicine storage. Additionally, our solutions extend to fruit and vegetable air-conditioning storage, workshop air conditioning, quick-freezing, freeze-drying, and thawing devices.
BINGYAN IS DEDICATED TO DELIVERING CUTTING-EDGE REFRIGERATION SYSTEM SOLUTIONS THAT ARE SCIENTIFICALLY BACKED AND METICULOUSLY PLANNED, ALONG WITH SUPERIOR ENGINEERING AND EXEMPLARY AFTER-SALES SERVICES.
Bingyan offers a comprehensive suite of services encompassing sales, innovative design, meticulous construction, and top-notch after-sales support.
1. Our sales department excels in deeply understanding and precisely capturing customer needs, ensuring seamless communication and flawlessly conveying customer intentions for unmatched satisfaction.
2. The design department stands out by offering customers expert, well-considered engineering advice, crafting bespoke, reliable, and stable refrigeration solutions meticulously tailored to meet specific customer requirements.
3. Our engineering department approaches every construction process with precision and dedication, expertly executing each task to create projects of the highest quality, exemplifying our commitment to excellence.
4. The after-sales department remains vigilant and ever-ready to provide unwavering support, ensuring the enduring 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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