NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle of Cascade Refrigeration System
The groundbreaking NH3/CO2 cascade refrigeration system is ingeniously crafted into two seamless parts: the high-temperature stage and the low-temperature stage. In this brilliant system, NH3 serves as the refrigerant for the high temperature, and CO2 reigns supreme in the low temperature. The evaporation of NH3 in the high-temperature level skillfully condenses the CO2 gas discharged from the low-temperature level. A singular condensation evaporator connects these two dynamic stages, functioning as both the condenser for the low-temperature stage and the evaporator for the high-temperature stage.
In this state-of-the-art system, the heat load is elegantly transferred to the CO2 refrigerant via the end evaporator. The heat absorbed by CO2 is then smoothly passed to the high-temperature NH3 refrigerant through the condensing evaporator. The NH3 refrigerant, at high temperature, skillfully transfers the heat to the high-temperature condenser, releasing it effortlessly to the environment through a cooling medium. The condensed CO2 in the condensing evaporator makes its way to the CO2 reservoir, proceeding to the gas-liquid separator via the dryer filter and throttle valve. The liquid CO2 is propelled to the CO2 evaporator by a circulation pump, bypassing any end cooling devices, such as a single freezer or chiller. Post-evaporation, the two-phase CO2 returns to the gas-liquid separator, while the gaseous CO2 is eagerly sucked in by the compressor to be compressed into the condensing evaporator, perpetuating the efficient cascade refrigeration cycle.
The NH3/CO2 cascade refrigeration system features high and low temperature levels, each employing a single refrigerant system. The equipment configuration is astutely divided: the high-temperature NH3 system parallels conventional systems, boasting a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 system complements this with a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and an expansion vessel.
The The CO2 gas-liquid separator plays a pivotal role in separating CO2 gas droplets from the evaporator in the CO2 compression refrigeration system. This essential device prevents the dreaded wet stroke of the compressor, maintains a stable liquid level during pump operation, and adeptly stores residual liquid from end equipment and pipelines when the pump halts. If tasked as a CO2 reservoir during inactivity, its volume must accommodate all system CO2 liquid. An auxiliary evaporator atop the gas-liquid separator ensures the CO2 pressure remains manageable post-shutdown. The condensing evaporator in the NH3/CO2 system doubles as the NH3-side evaporator and CO2-side condenser, where the compound liquid skillfully evaporates and absorbs heat within the tube, with carbon dioxide gas condensing into liquid within the shell.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Minimized NH3 Safety Concerns:
(1.(1)) The NH3/CO2 cascade system substantially reduces NH3 refrigerant charge condensing pressure to approximately one-tenth of traditional ammonia systems.
(1.(2)) NH3 is confined to the machine and equipment rooms, akin to a 'tiger in a cage,' vigilantly monitored by skilled professionals.
(1.(3)) This system capitalizes on NH3's superb heat transfer properties in high-temperature areas, effectively cooling CO2.
(2) CO2 safely integrates into personnel-dense operation rooms, such as single-freezing machines and warehouses, ensuring the utmost safety of individuals 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 leading manufacturer in refrigeration technology, we offer the unique ability to tailor our products precisely to your specifications. If you're uncertain about the ideal model for your needs, simply reach out to us, and we'll guide you with expert advice.Our team boasts multiple professional engineers who are dedicated to crafting a bespoke solution that perfectly aligns with your requirements, ensuring optimal performance and satisfaction.
Shandong Binzhou Huiyang Cold Chain Logistics Port
This impressive project spans an expansive 60,542 square meters, showcasing a total construction area of 72,370.31 square meters. It includes a state-of-the-art production workshop and an extensive cold storage area, which alone accounts for a substantial 65,538.50 square meters, making it a key player in the region's logistics infrastructure.
Our company's main products are as diverse as they are innovative, including: Condensing units,Air Cooler,Evaporative condenser,Freezer,Cold Room Doors,
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Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011, our company is nestled in the enchanting coastal city of Qingdao—a hub of innovation and excellence. We stand as a trailblazing high-tech enterprise that seamlessly integrates industrial and commercial freezing, cold storage, cutting-edge refrigeration systems, and state-of-the-art equipment. From meticulous research and visionary development to precision manufacturing and dynamic sales, we embody the pinnacle of refrigeration technology.
Since our inception, we have unwaveringly embraced 'science and technology' as our guiding star, with 'management' as our steadfast foundation. Our ultimate goal is to fulfill market demands and elevate customer satisfaction, crafting impeccable refrigeration systems, products, and services that redefine excellence.
Our company proudly boasts an impressive portfolio of over ten national technology patents, demonstrating our enduring commitment to developing high-efficiency, energy-saving, and environmentally responsible refrigeration system configurations. Our innovations include top-tier refrigeration units, energy-efficient barrel pumps, and sophisticated PLC intelligent program control boxes, solidifying our position as industry pioneers.
We specialize in designing tailored programs and customizing equipment for a diverse array of projects. Whether it's food quick-freezing storage, food cold storage, ultra-low temperature preservation, pharmaceutical storage, fruit and vegetable air-conditioning storage, workshop climate control, quick-freezing and freeze-drying processes, or advanced thawing devices, our expertise knows no bounds.
BINGYAN IS DEDICATED TO DELIVERING INNOVATIVE AND WELL-STRUCTURED REFRIGERATION SYSTEM SOLUTIONS TO OUR CUSTOMERS, ENSURING TOP-TIER ENGINEERING AND EXEMPLARY AFTER-SALES SERVICES.
Bingyan offers a full suite of services that encompass sales, customizable design, meticulous construction, and dedicated after-sales support.
1. Our sales department excels at understanding and capturing the specific needs of our customers, ensuring precise communication of their intentions, and maintaining proactive engagement for seamless interaction.
2. The design department crafts professional and insightful engineering recommendations, creating bespoke and stable refrigeration plans tailored to the unique requirements of each customer.
3. Our engineering team approaches every construction phase with meticulous attention to detail, ensuring that each task is completed with the utmost dedication, aiming for perfection in all high-quality projects.
4. The after-sales department stands ready at all times, prepared to ensure complete customer satisfaction and success.
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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