NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle of Cascade Refrigeration System
NH3/CO2 cascade refrigeration system is ingeniously crafted with two distinct stages: the high temperature stage employs NH3 as the refrigerant, while the low temperature stage utilizes CO2. The brilliance of this system lies in using the evaporative properties of NH3 in the high-temperature stage to effectively condense the CO2 refrigerant gas from the low-temperature stage. Central to this harmony is the condensation evaporator, acting as a bridge between temperatures, serving simultaneously as the condenser for the low temperature and the evaporator for the high temperature.
The intricate dance of heat transfer begins as the heat load is absorbed by the CO2 refrigerant in the end evaporator. This absorbed heat is then passed to the high-temperature NH3 refrigerant via the condensing evaporator, which subsequently transfers the heat to the high-temperature condenser, releasing it into the environment through a cooling medium. The CO2, now condensed within the condensing evaporator, moves to a CO2 reservoir, then journeys through a dryer filter and throttle valve into the CO2 gas-liquid separator. Propelled by a CO2 circulation pump, the liquid CO2 makes its way to the CO2 evaporator. Upon leaving the evaporator, the two-phase CO2 returns to the gas-liquid separator, while the gaseous CO2 is drawn in by the compressor and compressed back into the condensing evaporator. This meticulous cycle repeats, ensuring a seamless cascade refrigeration process.
In the NH3/CO2 cascade refrigeration system, each temperature level embodies a dedicated refrigeration system using a singular refrigerant. The high-temperature NH3 system mirrors conventional refrigeration systems with components like a compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 system features its own CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel. This bifurcation ensures efficient operation and reliability.
The CO2 gas-liquid separator plays a pivotal role in the CO2 compression refrigeration system, elegantly extracting CO2 gas droplets from the evaporator. By doing so, it prevents the compressor from wet strokes, stabilizes liquid levels during pump operation, and safely stores liquid return from end equipment and pipelines when the pump halts. When inoperative, if the gas-liquid separator acts as a CO2 reservoir, its capacity should accommodate all CO2 liquid within the system. Additionally, an auxiliary evaporator positioned atop the gas-liquid separator effectively mitigates excessive CO2 pressure post-shutdown. Within the NH3/CO2 cascade system, the condensing evaporator serves a dual function: as NH3's evaporator and CO2's condenser, facilitating compound liquid evaporation within the tube and transforming carbon dioxide gas to liquid form within the shell.
2. Advantages of NH3/CO2 Cascade Refrigeration System
(1) Enhanced Safety with Reduced NH3 Risk Factors:
(1.(1)) The NH3/CO2 cascade refrigeration system significantly minimizes NH3 refrigerant charge condensation pressure to about 1/10 of traditional systems, enhancing safety.
(1.(2)) NH3 is confined to controlled areas like the machine and equipment rooms, akin to a 'tiger' securely caged and monitored by trained professionals.
(1.(3)) It capitalizes on NH3's excellent heat transfer properties in high-temperature zones, optimizing CO2 cooling.
(2) CO2, as a medium, safely integrates into personnel-dense areas such as operation rooms and warehouses, ensuring both personnel and property safety.
8370be01
| 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, we pride ourselves on the ability to tailor our products precisely to meet your unique specifications. If you find yourself uncertain about the ideal model for your needs, we encourage you to reach out to us with your inquiries. Our team is here to assist you in making the perfect choice.Our team boasts a cadre of highly skilled engineers who are ready to craft a bespoke solution tailored just for you, ensuring that every detail is meticulously addressed.
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This remarkable project spans an impressive 60,542 square meters. The total architectural expanse unfolds across 72,370.31 square meters, showcasing meticulously designed production workshops. Within this vast area, the cold storage facilities themselves command an outstanding 65,538.50 square meters, ensuring ample space for all refrigeration needs.
Our company's main products are Condensing units,Air Cooler,Evaporative condenser,Freezer,Cold Room Doors,
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Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is nestled in the picturesque coastal city of Qingdao. We are a distinguished high-tech enterprise that seamlessly integrates industrial and commercial freezing, cutting-edge cold storage solutions, advanced refrigeration systems, and state-of-the-art equipment. Our comprehensive approach encompasses research and development, innovative design, meticulous manufacturing, and unparalleled sales service.
From the very beginning, our company has passionately embraced 'science and technology' as our guiding beacon, ensuring 'management' as our steadfast guarantee. Our mission is to deftly navigate market demands and exceed customer expectations by delivering impeccable refrigeration system solutions, premium products, and exceptional services.
Proudly holding over ten national technology patents, we are unwavering in our commitment to the research and development of highly efficient, energy-saving, and environmentally conscious refrigeration solutions. Our pioneering innovations include superior refrigeration units, energy-efficient barrel pumps, and sophisticated PLC intelligent program control boxes, setting new standards of excellence.
Our expertise predominantly focuses on designing bespoke programs and customizing equipment for a diverse array of projects. These projects span food quick-freezing storage, cutting-edge food cold storage, ultra-low temperature cold storage, secure medicine storage, fruit and vegetable air-conditioning storage, workshop air conditioning, as well as advanced quick-freezing, freeze-drying, and thawing devices.
BINGYAN IS DEVOTED TO DELIVERING CUSTOMERS INNOVATIVE AND WELL-STRUCTURED REFRIGERATION SYSTEM SOLUTIONS, ALONG WITH SUPERIOR QUALITY ENGINEERING AND EXEMPLARY AFTER-SALES SERVICES.
Bingyan offers a full spectrum of services, encompassing sales, design, construction, and exceptional after-sales support.
1. Our sales department astutely identifies and precisely interprets customer requirements, ensuring their intentions are clearly communicated and maintaining a seamless line of communication.
2. The design department furnishes clients with expert and sensible engineering advice, crafting customized and reliable refrigeration solutions tailored to their specific demands.
3. The engineering department approaches each construction phase with utmost diligence, meticulously executing each task to achieve unparalleled excellence and deliver premium quality projects.
4. Our after-sales department remains ever-ready and on alert to guarantee the seamless success 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.
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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.
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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.
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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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