NH3/CO2 Cascade Refrigeration System
1. The Principle of NH3/CO2 Cascade Refrigeration System
In the innovative NH3/CO2 cascade refrigeration system, we transcend traditional cooling approaches by integrating two distinct temperature stages. The high-temperature stage utilizes NH3 as the refrigerant, offering a robust and efficient cooling solution. Meanwhile, the low-temperature stage employs CO2 as the refrigerant for superior performance. This intelligent design uses the evaporation of NH3 in the high-temperature system to efficiently condense the CO2 refrigerant discharged from the low-temperature system. At the heart of this system is the condensation evaporator, which seamlessly connects the two stages, serving as both the low temperature condenser and the high temperature evaporator.
The heat exchange process is impeccably executed as the CO2 refrigerant absorbs heat in the end evaporator. This absorbed heat is then transferred to the high-temperature NH3 refrigerant through the condensing evaporator. Subsequently, the NH3 refrigerant releases this heat into the environment via the high-temperature condenser with the assistance of a cooling medium. Upon condensation in the evaporator, CO2 enters the reservoir before transitioning to the CO2 gas-liquid separator through a meticulously designed pathway involving a dryer filter and throttle valve. The liquid CO2 is propelled to the CO2 evaporator using a circulation pump, ensuring continuous cooling cycles without the need for an end cooling device. Through this cycle, the system achieves an exceptional balance of efficiency and reliability.
The NH3/CO2 cascade refrigeration system ingeniously divides its operations into two parts: a high-temperature NH3 system and a low-temperature CO2 system, each utilizing a single refrigerant. The high-temperature NH3 system mirrors a conventional setup, complete with a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and a throttling device. In contrast, the low-temperature CO2 system is a marvel of engineering, featuring a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and an expansion vessel. Together, these systems offer unparalleled refrigeration capabilities, catering to both standard and advanced cooling requirements.
The The CO2 gas-liquid separator plays a crucial role in the CO2 compression refrigeration system. It expertly separates droplets from the CO2 gas emerging from the evaporator, safeguarding the compressor against wet strokes. This device ensures a stable liquid level during pump operation and adeptly stores returning liquid in the system when the pump ceases operation. Remarkably, if used as a CO2 reservoir during downtime, it has the capacity to hold all the CO2 liquid in the system. Enhancing safety, an auxiliary evaporator is installed atop the gas-liquid separator to effectively regulate CO2 pressure after shutdown. In this cascade system, the condensing evaporator uniquely functions as both an NH3 evaporator and a CO2 condenser, where compound liquid evaporates and absorbs heat within the tube, while CO2 gas is condensed into a liquid in the shell.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Enhanced Safety with Reduced NH3 Factors:
(1.(1)) The NH3/CO2 cascade refrigeration system significantly lowers the NH3 condensing pressure, achieving just 1/10th the charge of traditional ammonia systems, thus elevating safety and efficiency;
(1.(2)) NH3 is strategically confined to the machine and equipment rooms, akin to a 'tiger' securely caged and monitored by skilled professionals, ensuring utmost safety;
(1.(3)) Maximizing NH3's superior heat transfer properties in the high-temperature regions to effectively cool CO2, optimizing overall system performance.
(2) Utilizing CO2 as a Medium in High-Occupancy Areas: CO2 becomes the preferred medium for personnel-intensive operation rooms and warehouses, safeguarding both personnel and property with its reliable and safe characteristics.
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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 delighted to offer bespoke solutions tailored precisely to your needs. Should you find yourself uncertain about the ideal model for your requirements, please reach out to us. Our team is eager to assist in pinpointing the perfect fit for your specifications.Our team of seasoned engineers is ready to devise a personalized solution crafted just for you. With their extensive expertise, they will ensure that you receive a product perfectly suited to your unique demands.
Shandong Binzhou Huiyang Cold Chain Logistics Port
This impressive project spans a vast area of 60,542 square meters, boasting a total construction space of 72,370.31 square meters. It encompasses an advanced production workshop and a state-of-the-art cold storage facility, covering a remarkable 65,538.50 square meters. This smartly designed infrastructure is tailored to meet the rigorous demands of the cold chain logistics industry, ensuring efficiency and reliability at every stage.
The core products that we proudly offer are: High-Efficiency Condensing Units,Advanced Air Coolers,Cutting-Edge Evaporative Condensers,Innovative Freezers,State-of-the-Art Cold Room Doors,
Durable Cold Storage Panels, To delve deeper into our product range, simply click on any product name or image for more details.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is nestled in the enchanting coastal city of Qingdao. Our company proudly stands as a beacon of innovation, merging industrial and commercial freezing solutions, cold storage, refrigeration system R&D, design, manufacturing, and sales into one dynamic high-tech enterprise.
From our very inception, we have been guided by the principle of 'science and technology,' with 'management' as our steadfast foundation. Our mission is to satisfy market demands and deliver unparalleled customer service. We strive to provide comprehensive refrigeration system solutions, alongside unmatched products and services.
Boasting over ten national technology patents, our company is deeply committed to the relentless pursuit of developing high-efficiency, energy-saving, and environmentally friendly refrigeration system configurations. Our offerings include cutting-edge refrigeration units, energy-saving barrel pumps, and PLC intelligent program control boxes, to name a few.
We specialize in program design and equipment customization for a diverse range of projects, including food quick-freezing storage, food cold storage, ultra-low temperature cold storage, medical storage, fruit and vegetable air-conditioning storage, workshop air conditioning, as well as quick-freezing, freeze-drying, and thawing devices.
BINGYAN IS DEDICATED TO DELIVERING CUSTOMERS HIGHLY SCIENTIFIC AND METICULOUSLY PLANNED REFRIGERATION SYSTEM SOLUTIONS, ALONG WITH SUPERIOR ENGINEERING AND AFTER-SALES SUPPORT.
Bingyan offers a full suite of services, encompassing sales, bespoke design, meticulous construction, and impeccable after-sales service.
1. Our sales department goes the extra mile to precisely capture and understand customer needs, effectively communicate their intentions, and maintain seamless communication with clients for optimal satisfaction.
2. The design department excels in furnishing customers with expert and logical engineering advice, crafting reliable and consistent refrigeration plans that perfectly suit customer requirements.
3. The engineering department approaches each construction process with utmost diligence, meticulously completing every task with a commitment to excellence, thereby crafting projects of the highest quality.
4. Our after-sales department is perpetually ready and on standby to ensure our clients' continued success and satisfaction.
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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