NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle of Cascade Refrigeration System
Delve into the NH3/CO2 cascade refrigeration system, ingeniously crafted in two essential stages: the high-temperature stage, harnessing NH3 as its refrigerant, and the low-temperature stage, fueled by CO2. In this sophisticated setup, the NH3 refrigerant in the high-temperature level gracefully evaporates, skillfully condensing the CO2 refrigerant gas from the low-temperature level. A vital condensation evaporator skillfully bridges these stages, acting dually as the condenser for the low-temperature stage and the evaporator for the high-temperature stage, ensuring seamless operation.
Heat load is expertly transferred to the CO2 refrigerant through the end evaporator, which then passes the absorbed heat to the high-temperature NH3 refrigerant via the condensing evaporator. This high-temperature NH3 refrigerant further transfers the heat to a high-temperature condenser, where it's elegantly released into the environment through a cooling medium. Condensed CO2 in the condensing evaporator enters a CO2 reservoir and proceeds through a dryer filter and throttle valve to the CO2 gas-liquid separator. The liquid CO2 is then propelled to the CO2 evaporator via a CO2 circulation pump. After the evaporator, the resulting two-phase CO2 swiftly returns to the gas-liquid separator, where gaseous CO2 is drawn in by the compressor, compressed, and sent back to the condensing evaporator. This meticulous cycle repeats to complete the entire cascade refrigeration cycle.
In the NH3/CO2 cascade refrigeration system, both high and low temperature levels operate with single refrigerants. The sophisticated equipment is divided into two domains: the high-temperature NH3 refrigeration system mirrors conventional systems, consisting of a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and a throttling device. Meanwhile, the low-temperature CO2 refrigeration system includes a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and an expansion vessel, ensuring efficient and reliable performance.
The The CO2 gas-liquid separator plays a pivotal role in skillfully separating CO2 gas droplets from the evaporator within the CO2 compression refrigeration system. This separation averts compressor wet strokes, maintains a stable liquid level during pump operation, and ensures safe liquid return when the pump halts. Additionally, if the gas-liquid separator functions as a CO2 reservoir in an idle state, its volume must accommodate all system CO2 liquid. Furthermore, an auxiliary evaporator atop the gas-liquid separator is essential for preventing excessive CO2 pressure post-shutdown. Within the NH3/CO2 cascade refrigeration system, the condensing evaporator serves as both the NH3 side's evaporator and the CO2 side's condenser, facilitating compound liquid evaporation and heat absorption inside the tube, while carbon dioxide gas is efficiently condensed into liquid within the shell.
2. Advantages of NH3/CO2 Cascade Refrigeration System
(1) Minimized NH3 Hazards:
(1.(1)) The NH3/CO2 cascade refrigeration system substantially lowers NH3 refrigerant medium condensing pressure, bringing it down to about 1/10th of that in traditional ammonia refrigeration systems.
(1.(2)) NH3 is strategically confined to machine and equipment rooms, akin to a 'tiger in a cage,' under the vigilant care of professional and technical personnel.
(1.(3)) Maximizes NH3's excellent heat transfer properties in high-temperature regions, effectively cooling CO2.
(2) CO2 is safely introduced into personnel-rich areas such as single-freezing machines 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 |
As a leading manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. specializes in tailoring refrigeration solutions that meet your unique needs. If you're uncertain about which model aligns perfectly with your requirements, feel free to reach out to us for expert guidance.Our team of seasoned engineers is dedicated to crafting personalized solutions that cater to your specific refrigeration needs, ensuring optimal performance and satisfaction.
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Qingdao Bingyan Refrigeration Equipment Co., Ltd. proudly presents its distinguished array of core products, which include: High-Efficiency Condensing Units,Advanced Air Coolers,Innovative Evaporative Condensers,State-of-the-Art Freezers,Premium Cold Room Doors,
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Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in 2011 in the picturesque coastal city of Qingdao, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is a trailblazer in the realm of industrial and commercial freezing, cold storage solutions, and cutting-edge refrigeration systems. As a high-tech enterprise, we excel in R&D, innovative design, manufacturing, and sales, delivering superior refrigeration equipment that meets the highest standards.
From the very beginning, our company has embraced a forward-thinking philosophy, with 'science and technology' as our compass and 'management' as our steadfast foundation. We strive to satisfy market demands and exceed customer expectations by offering comprehensive refrigeration system solutions that epitomize perfection in products and services, ensuring superior customer satisfaction every step of the way.
With over ten national technology patents, we are unwaveringly dedicated to pioneering the development of high-efficiency, energy-saving, and environmentally friendly refrigeration system configurations. Our product line includes high-performance refrigeration units, energy-conserving barrel pumps, and intelligent PLC program control boxes, all designed to elevate efficiency and sustainability.
Our expertise primarily lies in the bespoke design and customization of cutting-edge equipment for an array of projects. From food quick-freezing and cold storage to ultra-low temperature facilities, pharmaceutical storage, and climate-controlled fruit and vegetable preservation, we cater to diverse needs. Our specialties also encompass workshop air conditioning, quick-freezing, freeze-drying, and innovative thawing devices, ensuring optimal solutions for every refrigeration challenge.
At BINGYAN, we wholeheartedly dedicate ourselves to delivering scientifically advanced and meticulously crafted refrigeration system solutions. Coupled with our unwavering commitment to providing premium engineering and exceptional after-sales services, we ensure an unparalleled customer experience.
Bingyan is your one-stop provider offering a seamless array of services, from insightful sales consultations and innovative design solutions to precise construction execution and vigilant after-sales support.
1. Our sales department is a keen listener, adeptly comprehending your needs and effectively communicating your vision. We foster an open line of dialogue to ensure a seamless customer experience.
2. The design department is equipped with industry experts who offer insightful engineering advice. We craft bespoke and reliable refrigeration plans tailored precisely to your unique requirements.
3. Our engineering department approaches every construction phase with meticulous care, executing each task to perfection. Our quest for excellence ensures that we deliver high-caliber projects that meet the highest standards.
4. The after-sales department stands ever-ready to assist, ensuring your success is our top priority. We are committed to being at your service whenever you need us.
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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