NH3/CO2 Cascade Refrigeration System
1. Introduction to the NH3/CO2 Cascade Refrigeration System
NH3/CO2 cascade refrigeration system seamlessly integrates two stages: high-temperature and low-temperature. The high-temperature stage uses NH3 as the refrigerant, while CO2 is employed for the low-temperature stage. The magic begins when NH3 evaporates in the high-temperature system, condensing the CO2 gas from the low-temperature level. A condensation evaporator ingeniously connects these two stages, acting as both the low-temperature level's condenser and the high-temperature level's evaporator.
Within this sophisticated system, the heat load is efficiently transferred to the CO2 refrigerant via the end evaporator. This absorbed heat is then passed to the high-temperature NH3 refrigerant through the condensing evaporator, which subsequently releases it to the environment via the high-temperature condenser and cooling medium. Post-condensation, CO2 enters a reservoir and proceeds through a dryer filter and throttle valve to reach the CO2 gas-liquid separator. The cycle continues as liquid CO2, propelled by a circulation pump, moves to the CO2 evaporator, ensuring a continuous two-phase return to the gas-liquid separator. The gaseous CO2 is compressed and cycled back, completing this remarkable cascade refrigeration cycle.
In the NH3/CO2 cascade system, the high and low-temperature levels operate as distinct refrigeration systems using single refrigerants. The high-temperature NH3 system mirrors traditional setups, encompassing components like the refrigeration compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 system boasts a comprehensive array of elements, 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 pivotal role in isolating CO2 gas droplets from the evaporator in the CO2 compression refrigeration system, thereby averting compressor wet stroke and ensuring liquid level stability during pump operation. It also accommodates end equipment and pipeline liquid return when the pump halts. Should the gas-liquid separator serve as a CO2 reservoir during non-operation, its volume must adequately contain all system CO2 liquid. Additionally, an auxiliary evaporator atop the gas-liquid separator effectively prevents excessive CO2 pressure post-shutdown. Within the NH3/CO2 cascade system, the condensing evaporator functions dually as an NH3 evaporator and a CO2 condenser, where the compound liquid evaporates and absorbs heat within the tube, condensing carbon dioxide gas into a liquid in the shell.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Enhanced Safety by Reducing NH3 Risks:
(1.(1)) The NH3/CO2 cascade refrigeration system remarkably minimizes the NH3 refrigerant charge pressure, achieving just 1/10th of traditional ammonia systems;
(1.(2)) NH3 is strategically contained within the machine and equipment rooms, akin to a "tiger" securely caged, under the vigilant watch of skilled professionals;
(1.(3)) This system capitalizes on NH3’s excellent heat transfer properties in high-temperature regions to efficiently cool CO2.
(2) The use of CO2 as a medium in personnel-dense operation rooms (such as single-freezing machines) and warehouses ensures superior safety for both personnel and property.
c61b9f4e
| 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 proud manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. offers the flexibility to customize your industrial refrigeration equipment to meet your specific needs. If you're unsure about the ideal model for your requirements, feel free to reach out to us.Our team of highly skilled engineers is dedicated to crafting tailored solutions, ensuring you receive the perfect fit for your project.
Shandong Binzhou Huiyang Cold Chain Logistics Port: A Masterpiece of Innovation and Efficiency
This monumental project spans a vast 60,542 square meters, featuring a comprehensive construction area of 72,370.31 square meters. Within this extraordinary space, the production workshop and cold storage area alone command an impressive 65,538.50 square meters. Each element is meticulously designed to enhance efficiency and safety, setting new standards in industrial refrigeration technology.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., our flagship offerings include: High-performance Condensing Units,Advanced Air Coolers,Innovative Evaporative Condensers,State-of-the-art Freezers,Customizable Cold Room Doors,
Durable Cold Storage Panels, For more details on our extraordinary range, simply click on any product name or image to discover more.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. proudly stands in the picturesque coastal city of Qingdao. As a high-tech leader, we integrate industrial and commercial freezing and cold storage solutions, offering comprehensive research and development, design, manufacturing, and sales of state-of-the-art refrigeration systems and equipment.
From our inception, we have passionately embraced 'science and technology' as our guiding principle, with 'management' ensuring excellence. Our mission remains clear: to anticipate and fulfill market demands by delivering unparalleled customer service and offering flawless refrigeration system solutions, products, and services tailored to your needs.
Boasting over ten prestigious national technology patents, we are dedicated to the perpetual advancement of high-efficiency, energy-saving, and environmentally friendly refrigeration configurations. Our innovative offerings include superior refrigeration units, energy-efficient barrel pumps, and sophisticated PLC intelligent program control boxes, solidifying our position as pioneers in refrigeration technology.
Our expertise shines in designing tailored programs and customizing equipment for various projects, including rapid food freezing storage, food cold storage, ultra-low temperature cold storage, pharmaceutical storage, fruit and vegetable air-conditioning storage, workshop air conditioning, quick-freezing, freeze-drying, and thawing devices.
BINGYAN IS DEDICATED TO DELIVERING CUTTING-EDGE AND SCIENTIFIC REFRIGERATION SYSTEM SOLUTIONS, COUPLED WITH EXEMPLARY ENGINEERING AND UNPARALLELED AFTER-SALES SERVICES TO ENHANCE CUSTOMER SATISFACTION.
Bingyan offers an all-encompassing suite of services, spanning sales, bespoke design, meticulous construction, and dedicated after-sales support.
1. Our sales department excels in discerning and understanding customer needs, meticulously conveying their intentions, and fostering robust communication channels to ensure seamless interactions.
2. The design department brings forth professional and insightful engineering suggestions, crafting custom-tailored, reliable, and stable refrigeration plans that precisely meet customer requirements.
3. The engineering department approaches each construction phase with dedication and meticulous attention to detail, striving for excellence to deliver projects of unparalleled quality.
4. Our after-sales department remains ever-vigilant and at the ready, ensuring continuous success and satisfaction 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}