NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Ingenious Principle of Cascade Refrigeration System
The NH3/CO2 cascade refrigeration system ingeniously integrates two stages: a high-temperature stage using NH3 as the refrigerant and a low-temperature stage using CO2. The NH3 refrigerant evaporates at the high-temperature stage, thereby condensing the CO2 gas from the low-temperature stage. A condensation evaporator connects these two stages, functioning both as the condenser for the low-temperature stage and the evaporator for the high-temperature stage.
In this system, the heat load is efficiently transferred to the CO2 refrigerant via the end evaporator. The absorbed heat by CO2 is then transferred to the high-temperature NH3 refrigerant through the condensing evaporator. Subsequently, the high-temperature NH3 refrigerant releases this heat into the environment through the high-temperature condenser. The condensed CO2 transfers through a series of processes, maintaining a continuous and efficient refrigeration cycle that ensures optimal performance.
In the NH3/CO2 cascade refrigeration system, each temperature stage operates as an independent refrigeration system using a single refrigerant. The high-temperature NH3 system includes standard components such as the refrigeration compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 system comprises the CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel.
The CO2 gas-liquid separator is vital for separating CO2 gas droplets from the evaporator within the CO2 compression refrigeration system. This prevents compressor wet strokes and maintains a stable liquid level during pump operation. When the pump stops, it safely stores the returning liquid. If the gas-liquid separator serves as a CO2 reservoir, it must accommodate all the system's CO2 liquid. An auxiliary evaporator atop the gas-liquid separator ensures CO2 pressure remains manageable post-shutdown. In the NH3/CO2 cascade system, the condensing evaporator doubles as both the NH3 side's evaporator and the CO2 side's condenser, efficiently managing heat transfer and condensation processes.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Enhanced Safety with Reduced NH3 Risks:
(1.(1)) The NH3/CO2 cascade system significantly lowers NH3 refrigerant charge pressure, making it just 1/10th of traditional ammonia systems.
(1.(2)) NH3 is confined to machine and equipment rooms, akin to a 'tiger in a cage,' monitored by qualified personnel.
(1.(3)) This system exploits NH3's excellent heat transfer properties in high-temperature regions to cool CO2 effectively.
(2) CO2 Integration for Enhanced Safety: CO2 serves as the medium in personnel-intensive areas like operation rooms and warehouses, ensuring the safety of both personnel 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 |
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011 in the picturesque coastal city of Qingdao, Qingdao Bingyan Refrigeration Equipment Co., Ltd. stands as a beacon of innovation and excellence. As a premier high-tech enterprise, we specialize in a comprehensive array of industrial and commercial freezing and cold storage solutions, encompassing the research and development, design, manufacturing, and sales of advanced refrigeration systems and equipment.
From day one, our company has embraced the philosophy of 'science and technology' as our guiding star and 'management' as our steadfast guarantee. Our mission is to exceed market expectations and deliver unparalleled customer service by providing flawless refrigeration system solutions, cutting-edge products, and unmatched services.
With over ten national technology patents to our name, we are dedicated to the perpetual research and development of high-efficiency, energy-saving, and environmentally friendly refrigeration system configurations. Our product lineup includes high-efficiency refrigeration units, energy-saving barrel pumps, and PLC intelligent program control boxes, all designed for peak performance and sustainability.
Our expertise is evident in our tailored program designs and customized equipment solutions for a variety of projects. These include food quick-freezing storage, food cold storage, ultra-low temperature cold storage, pharmaceutical storage, fruit and vegetable air-conditioning storage, workshop air conditioning, quick-freezing and freeze-drying, and thawing devices.
BINGYAN IS COMMITTED TO PROVIDING CUSTOMERS WITH SCIENTIFICALLY ADVANCED AND STRATEGICALLY REASONABLE REFRIGERATION SYSTEM SOLUTIONS. WE ALSO OFFER PREMIUM ENGINEERING SUPPORT AND EXEMPLARY AFTER-SALES SERVICES.
Bingyan offers a comprehensive suite of services encompassing sales, design, construction, and after-sales support to ensure a seamless experience.
1. Our sales department excels at precisely comprehending and capturing customer needs. We ensure accurate communication of customer intentions and maintain continuous, effective dialogue with clients.
2. The design department provides clients with expert, well-founded engineering recommendations, crafting dependable and stable refrigeration plans tailored to individual requirements.
3. The engineering department approaches every construction process with meticulous attention to detail, aiming to deliver high-quality projects that epitomize excellence.
4. Our after-sales department is ever-vigilant and ready to ensure our customers' ongoing success, providing unwavering support and prompt service.
Question (Q):What are the key advantages of your products?
Answer (A): Our professional designers tailor designs to meet your specific needs, selecting the most suitable refrigeration equipment to ensure optimal cooling efficiency, significant energy savings, and reduced power consumption.
Q:How strong is your company?
A: Founded in 2011, our company boasts a dedicated cold storage design team, an expert installation crew, and seasoned after-sales maintenance staff. We offer comprehensive services including design, installation guidance, and maintenance for cold storage solutions.
Q:Where is your company located? Can I visit you?
A: Absolutely, we warmly welcome you to visit our factory at any time.
Q:What is the estimated delivery time?
A: Typically, delivery is within 60 days after we confirm your requirements.
Q:What type of payment methods does your company accept?
A: Generally, we require a 30% down payment via T/T upon confirming the Proforma Invoice (PI), with the balance payable after inspection and before shipment. We accept telegraphic transfers and sight letters of credit.
Q: When can I expect a price quote?
A: We usually provide a quote within 24 hours after receiving your inquiry.
Q: What shipping methods are available?
A: We offer shipping by sea, by air, and by express courier services.
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