NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle of Cascade Refrigeration System
In the ingenious design of the NH3/CO2 cascade refrigeration system, two distinct sections work in harmony: the high-temperature stage employs NH3, while the low-temperature stage utilizes CO2 as refrigerants. The brilliance lies in the evaporation of NH3 at the high-temperature stage, which cools and condenses the CO2 from the low-temperature level. A masterful condensation evaporator seamlessly connects these two stages, serving as both the condenser for the low-temperature level and the evaporator for the high-temperature level, ensuring efficient thermodynamic performance.
The system's heat load is impeccably transferred to the CO2 refrigerant via the end evaporator. Subsequently, the CO2 refrigerant proficiently channels the absorbed heat to the high-temperature NH3 refrigerant through the condensing evaporator. The NH3 refrigerant, in its high-temperature state, then elegantly transfers this heat to the high-temperature condenser, thereby releasing it to the environment using an efficient cooling medium. Within the condensing evaporator, the CO2 condenses and enters the CO2 reservoir, progressing to the CO2 gas-liquid separator through a meticulously crafted path involving a dryer filter and throttle valve. The journey continues as liquid CO2 is propelled to the CO2 evaporator by a specialized circulation pump, sans end cooling devices like freezers or chillers. Post-evaporation, the return journey of the two-phase CO2 to the gas-liquid separator is smooth, from where gaseous CO2 is expertly compressed by the compressor back into the condensing evaporator, perpetuating this sophisticated cycle for an uninterrupted cascade refrigeration process.
NH3/CO2: In the cascade refrigeration system, the high and low-temperature levels are distinct yet synchronized refrigeration systems, each utilizing a single refrigerant. The equipment configuration bifurcates into two parts: the high-temperature NH3 refrigeration system resembles a conventional setup with added sophistication, encompassing not only the refrigeration compressor but also essential components like the condenser, liquid storage, gas-liquid separator, and throttling device. Parallelly, the low-temperature CO2 refrigeration system is equipped with a specialized CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and an expansion vessel to ensure uncompromised functionality and efficiency.
The The CO2 gas-liquid separator plays a crucial role in carefully extracting CO2 gas droplets from the evaporator in the CO2 compression refrigeration system. This expert separation is vital to prevent compressor wet stroke, maintain seamless liquid level stability during pump operation, and efficiently store end equipment and pipeline liquid return when the pump halts. Should the gas-liquid separator serve as a CO2 reservoir when inactive, it is meticulously designed to accommodate the entire CO2 liquid volume within the system. An auxiliary evaporator, strategically positioned atop the gas-liquid separator, adeptly prevents excessive CO2 pressure post-shutdown. Within the NH3/CO2 cascade refrigeration system, the condensing evaporator ingeniously dual functions as the NH3 side's evaporator and the CO2 side's condenser, allowing compound liquid to elegantly evaporate and absorb heat within the tube while carbon dioxide gas is brilliantly condensed into liquid within the shell.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Minimization of NH3 Safety Concerns:
(1.(1)) The NH3/CO2 cascade refrigeration system significantly diminishes the condensing pressure of the NH3 refrigerant charge to approximately 1/10th of that in traditional ammonia systems, markedly enhancing safety.
(1.(2)) NH3 is confined to the machine and equipment rooms, akin to a 'tiger' securely contained within a 'cage', vigilantly monitored by skilled professionals.
(1.(3)) The system optimally leverages NH3's superior heat transfer capabilities in the high-temperature domain to effectively cool CO2, maximizing efficiency.
(2) CO2 as a Safe Medium: CO2 is a friendly medium introduced into personnel-dense operation areas such as single-freezer machines and warehouses, ensuring both personnel safety and property protection.
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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, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is pleased to offer bespoke customization of our cutting-edge products tailored specifically to meet your unique requirements. If you're uncertain about which model best suits your needs, please feel free to reach out to us, and we'll guide you to the perfect choice.Our team of highly skilled professional engineers stands ready to craft a personalized solution designed exclusively for you, ensuring optimal performance and satisfaction.
Shandong Binzhou Huiyang Cold Chain Logistics Port
The project spans an impressive 60,542 square meters, boasting a comprehensive total construction area of 72,370.31 square meters. This includes a state-of-the-art production workshop and a vast cold storage area covering 65,538.50 square meters, designed to optimize efficiency and storage capacity.
At Qingdao Bingyan Refrigeration Equipment Co., Ltd., we proudly offer an exceptional array of main products, each designed to meet your refrigeration needs with precision. Our Condensing Units, crafted for efficiency and reliability,,state-of-the-art Air Coolers, engineered to deliver superior cooling performance,,and advanced Evaporative Condensers, which provide optimal heat exchange solutions,,along with premium Freezers, designed to preserve freshness and extend shelf life,,durable Cold Room Doors, offering robust insulation and energy efficiency,,
and superior Cold Storage Panels, known for their exceptional thermal insulation properties,, To explore more about our diverse product offerings, simply click on the product name or picture to dive deeper into our innovative solutions.
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 high-tech enterprise that seamlessly integrates industrial and commercial freezing, cold storage, and advanced refrigeration systems into our research, development, design, manufacturing, and sales operations.
From the very beginning, our company has embraced 'science and technology' as the beacon to guide us, with 'management' ensuring we fulfill market demand and offer unparalleled customer service. Our goal is to deliver flawless refrigeration system solutions, exceptional products, and unparalleled services.
We proudly hold over ten national technology patents and are unwavering in our commitment to developing cutting-edge, energy-efficient, and environmentally conscious refrigeration solutions. Our portfolio boasts high-performance refrigeration units, energy-saving barrel pumps, and intelligent PLC program control boxes, among others.
Specializing in program design and equipment customization, we cater to a variety of projects including food quick-freezing storage, food cold storage, ultra-low temperature cold storage, medicine storage, air-conditioning storage for fruits and vegetables, workshop air conditioning, quick-freezing, freeze-drying, and thawing devices.
At BINGYAN, we are driven by a commitment to excellence, offering our customers scientifically engineered and strategically designed refrigeration system solutions. Coupled with our unwavering dedication to top-tier engineering and robust after-sales services, we ensure your refrigeration needs are met with unparalleled quality.
Bingyan delivers a full spectrum of services that encompass sales, meticulous design, precision construction, and dedicated after-sales support, all tailored to meet and exceed your expectations.
1. Our sales department is adept at accurately discerning and capturing customer needs, ensuring that client intentions are perfectly conveyed. We foster a seamless and transparent communication process that maintains close ties and understanding with our customers.
2. The design department excels in offering expert and pragmatic engineering advice, crafting custom refrigeration plans that are both reliable and stable, precisely aligned with the unique requirements of each customer.
3. Our engineering department approaches every construction task with precision and dedication, taking pride in executing each phase of the construction process with meticulous attention to detail. We consistently strive for perfection, delivering projects of exceptional quality.
4. The after-sales department stands prepared and vigilant, ready to support and guarantee the ongoing success of our customers, ensuring their satisfaction and continuous operation.
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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