NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Ingenious Principle of Cascade Refrigeration Systems
The NH3/CO2 cascade refrigeration system is ingeniously designed with two pivotal stages: the high temperature and low temperature stages. At the core of this innovative system, NH3 (Ammonia) is utilized as the refrigerant in the high-temperature stage, whereas CO2 (Carbon Dioxide) is employed in the low-temperature stage. This harmonious interaction occurs as the NH3 refrigerant's evaporation in the high-temperature system effectively condenses the CO2 refrigerant gas expelled from the low-temperature system. A meticulously engineered condensation evaporator seamlessly bridges these two stages, functioning as both the condenser for the low-temperature level and the evaporator for the high-temperature level.
In this sophisticated system, heat is transferred to the CO2 refrigerant through the terminal evaporator. The CO2 refrigerant, now infused with absorbed heat, conveys this energy to the high-temperature NH3 refrigerant via the condensing evaporator. Subsequently, the NH3 refrigerant efficiently releases the heat to the environment through a high-temperature condenser, assisted by a cooling medium. The journey of condensed CO2 continues as it enters the CO2 reservoir, subsequently traversing the dryer filter and throttle valve on its way to the CO2 gas-liquid separator. From here, liquid CO2 is propelled to the CO2 evaporator by a CO2 circulation pump, with the absence of an end cooling device like a single freezer or chiller. After the evaporator, the two-phase CO2 returns to the gas-liquid separator, where the gaseous CO2 is efficiently compressed by the compressor into the condensing evaporator. This meticulous cycle perpetuates, completing the entire cascade refrigeration loop.
The NH3/CO2 cascade refrigeration system is a marvel of engineering, where the high and low temperature levels each operate as independent single-refrigerant systems. The high-temperature NH3 refrigeration system mirrors conventional systems, comprising not only a refrigeration compressor but also a condenser, liquid storage, gas-liquid separator, and a throttling device. Meanwhile, the low-temperature CO2 refrigeration system boasts a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, all working in concert to achieve unparalleled refrigeration efficiency.
The CO2 gas-liquid separator is a critical component within the CO2 compression refrigeration system, meticulously engineered to separate CO2 gas droplets from the evaporator. This prevents the compressor's wet stroke, ensuring stable liquid levels during pump operation and accommodating end equipment and pipeline liquid return when the pump ceases operation. When not in use, the separator's volume is designed to accommodate all CO2 liquid within the system, effectively functioning as a reservoir. For enhanced safety, an auxiliary evaporator is strategically placed atop the gas-liquid separator to prevent excessive CO2 pressure following shutdowns. In the NH3/CO2 cascade refrigeration system, the condensing evaporator serves dual roles: as the evaporator on the NH3 side and the condenser on the CO2 side, facilitating the evaporation and heat absorption of compound liquid within the tube and the condensation of carbon dioxide gas into liquid within the shell.
2. Unveiling the Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Minimizing NH3 Safety Concerns:
(1.(1)) The NH3/CO2 cascade refrigeration system achieves a remarkable reduction in the condensing pressure of the NH3 refrigeration medium charge, approximately one-tenth of that in conventional ammonia refrigeration systems.
(1.(2)) NH3 is confined strictly to the machine and equipment rooms, akin to a 'tiger' safely enclosed within a 'cage,' under the vigilant supervision of skilled technical personnel.
(1.(3)) This system capitalizes on NH3's exceptional thermal conductivity in high-temperature regions, utilizing it to cool CO2 effectively.
(2) Enhanced Safety with CO2: CO2 is introduced as a medium into areas with high personnel presence, such as single-freezing machines and warehouses, ensuring the utmost safety for 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, we pride ourselves on our ability to tailor products precisely to your specifications. If you're unsure which model best suits your needs, please feel free to reach out to us. Our experts are here to assist you.Our team consists of several highly skilled engineers, ready to craft a bespoke solution that perfectly aligns with your requirements.
Shandong Binzhou Huiyang Cold Chain Logistics Port
This ambitious project encompasses a sprawling area of 60,542 square meters, with a comprehensive total construction area of 72,370.31 square meters. It includes an extensive production workshop, complemented by a vast cold storage area measuring an impressive 65,538.50 square meters.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., our flagship products include high-performance Condensing Units,advanced Air Coolers,cutting-edge Evaporative Condensers,efficient Freezers,durable Cold Room Doors,
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Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011 and nestled in the enchanting coastal city of Qingdao, our esteemed company stands as a beacon of innovation and excellence. We specialize in the comprehensive domain of industrial and commercial freezing and cold storage. At the heart of our operations are cutting-edge refrigeration systems and equipment, meticulously crafted through dedicated research and development, bespoke design, and superior manufacturing processes, all seamlessly integrated with top-notch sales service. As a recognized high-tech enterprise, we are committed to delivering unparalleled solutions in refrigeration technology.
From our inception, Qingdao Bingyan Refrigeration Equipment Co., Ltd. has steadfastly embraced the guiding principle of 'science and technology.' This unwavering commitment to innovation is bolstered by robust management strategies that ensure our market responsiveness and customer satisfaction. Our ultimate aim is to offer clients flawless refrigeration system solutions, alongside exceptional products and services that consistently exceed expectations.
Pioneering in technological advancement, our company proudly holds over ten national technology patents. We are dedicated to the relentless pursuit of developing high-efficiency, energy-saving, and environmentally friendly refrigeration system configurations. Our portfolio boasts high-efficiency refrigeration units, energy-conserving barrel pumps, and advanced PLC intelligent program control boxes, all designed to push the boundaries of refrigeration technology.
Our expertise extends to the intricate program design and bespoke equipment customization for a diverse array of projects. We cater to specialized needs in food quick-freezing storage, food cold storage, ultra-low temperature cold storage, and medicine storage. Our capabilities also encompass fruit and vegetable air-conditioning storage, workshop air conditioning solutions, quick-freezing and freeze-drying systems, as well as innovative thawing devices, all tailored to meet the unique demands of our clients.
At BINGYAN, we are dedicated to delivering scientifically crafted and highly efficient refrigeration system solutions to our esteemed customers. Our commitment extends beyond just delivering cutting-edge products; we excel in providing top-notch engineering services and impeccable after-sales support.
Bingyan offers a holistic range of services that encompasses sales, design, construction, and unparalleled after-sales support, ensuring a seamless and exceptional customer experience at every stage.
1. Our sales department possesses an acute understanding of customer requirements and consistently captures their intentions with precision. We pride ourselves on maintaining robust and transparent communication, ensuring that every dialogue strengthens our relationship with our valued clients.
2. The design department is driven by a commitment to excellence, providing clients with expert engineering advice. We meticulously tailor dependable and efficient refrigeration plans that perfectly cater to the unique needs of each customer.
3. Our engineering department approaches every construction phase with the utmost care and diligence, executing each task with precision. We strive for nothing short of perfection, consistently delivering projects that embody quality and innovation.
4. The after-sales department remains ever-vigilant and ready, ensuring that our customers' success is always supported. Our dedication to service excellence means we are always prepared to address needs promptly and effectively.
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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