NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principle of Cascade Refrigeration System
The NH3/CO2 cascade refrigeration system elegantly combines two distinct stages: a high-temperature stage utilizing NH3 as the refrigerant, and a low-temperature stage harnessing CO2 as the refrigerant. The high-temperature stage employs the evaporation of NH3 refrigerant to condense the CO2 refrigerant gas emanating from the low-temperature stage. A condensation evaporator acts as a seamless bridge, connecting both the high and low-temperature levels, serving dually as the low-temperature condenser and the high-temperature evaporator.
In this sophisticated system, the heat load is efficiently transferred to the CO2 refrigerant through the terminal evaporator. The absorbed heat by the CO2 refrigerant is further relayed to the high-temperature NH3 refrigerant via the condensing evaporator. Subsequently, the high-temperature NH3 refrigerant dutifully transfers the accumulated heat to a high-temperature condenser, releasing it to the environment through a cooling medium. Post-condensation, the CO2 in the condensing evaporator flows into the CO2 reservoir, then journeys through a dryer filter and throttle valve into the CO2 gas-liquid separator. The liquid CO2 is adeptly directed to the CO2 evaporator via the CO2 circulation pump, continuing the cycle where gaseous CO2 is compressed back into the condensing evaporator, perpetuating the seamless cascade refrigeration cycle.
NH3/CO2: In this cascade refrigeration marvel, both high and low-temperature levels operate as independent refrigeration systems using distinctive single refrigerants. The system's composition is bifurcated: The high-temperature NH3 refrigeration system mirrors conventional systems, equipped with a refrigeration compressor, condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 refrigeration system, beyond its CO2 compressor, integrates a condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel.
The CO2 gas-liquid separator is a pivotal component, effectively separating CO2 gas droplets from the evaporator within the CO2 compression refrigeration system to prevent the compressor's wet stroke. It stabilizes the liquid level during pump operations, ensuring safe storage of end equipment and pipeline liquid return during pump inactivity. If serving as a CO2 reservoir during non-operational periods, its volume must encapsulate all system CO2 liquid. An auxiliary evaporator atop the gas-liquid separator effectively mitigates excessive CO2 pressure post-shutdown. Within the NH3/CO2 cascade system, this condensing evaporator assumes dual roles, functioning as both the NH3 side evaporator and the CO2 side condenser, where compound liquid evaporates absorbing heat, while CO2 gas condenses into a liquid.
2. Advantages of NH3/CO2 Cascade Refrigeration System
(1) Reduced NH3 Unsafe Factors:
(1.(1)) The NH3/CO2 cascade refrigeration system spectacularly diminishes the condensing pressure of NH3 media charge to approximately 1/10th compared to traditional ammonia systems;
(1.(2)) NH3 is securely confined to designated machine and equipment rooms, akin to a 'tiger' in a protective 'cage', under the vigilant watch of skilled personnel;
(1.(3)) It maximizes the heat transfer virtues of NH3 within high-temperature regions, effectively cooling CO2.
(2) CO2, as a safe medium, is seamlessly introduced into personnel-intensive areas, such as single-freezing machines and warehouses, ensuring the utmost safety for both personnel and property.
36f6c79b
| 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 customization for our valued clients. Unsure which model aligns perfectly with your needs? Simply send us a message and let us guide you to the ideal solution.Our team of expert engineers stands ready to craft a tailored solution just for you, ensuring optimal performance and satisfaction.
Shandong Binzhou Huiyang Cold Chain Logistics Port
The project is an expansive venture, sprawling over a vast area of 60,542 square meters. It boasts a total construction footprint of 72,370.31 square meters, meticulously designed to include a state-of-the-art production workshop. The highlight of this project is the enormous cold storage area, covering an impressive 65,538.50 square meters, ensuring ample space for seamless operations and optimal logistics flow.
Our company's main products are Condensing units,Air Cooler,Evaporative condenser,Freezer,Cold Room Doors,
Cold storage panels, For a deeper exploration of our diverse offerings, please click on the product name or image to discover more.
Qingdao Bingyan Refrigeration Equipment Co., Ltd. Founded in 2011 in the stunning coastal city of Qingdao, Qingdao Bingyan Refrigeration Equipment Co., Ltd. stands as a pioneering force in the realm of industrial and commercial freezing and cold storage. We specialize in the innovative research, development, design, manufacturing, and sales of advanced refrigeration systems and equipment, establishing ourselves as a distinguished high-tech enterprise.
From the very beginning, our company has embraced 'science and technology' as our guiding light and 'management' as our steadfast guarantee. We are dedicated to fulfilling market demands and delivering exceptional customer service, with the ultimate aim of providing our clients with flawless refrigeration system solutions, unparalleled products, and exemplary services.
Our company is proud to hold over ten national technology patents, consistently dedicated to the development of high-efficiency, energy-saving, and environmentally friendly refrigeration systems. We excel in crafting high-performance refrigeration units, energy-conserving barrel pumps, and PLC intelligent program control boxes, among other innovations.
We excel in the design and customization of state-of-the-art equipment for a wide range of projects, including food quick-freezing storage, cold storage solutions, ultra-low temperature cold storage, pharmaceutical storage, fruit and vegetable air-conditioning storage, workshop air conditioning, rapid freezing and freeze-drying, as well as thawing devices.
BINGYAN is passionately devoted to offering its valued customers scientifically advanced and meticulously crafted refrigeration system solutions, paired with superior engineering expertise and unparalleled after-sales services.
At Bingyan, we deliver an all-encompassing suite of services, encompassing sales, bespoke design, precise construction, and dedicated after-sales support, ensuring a seamless experience.
1. Our dynamic sales department is adept at accurately discerning and comprehending each customer's unique requirements, adeptly relaying customer intentions, and maintaining seamless and ongoing communication to ensure satisfaction.
2. The expert design department is dedicated to offering customers professional, insightful engineering advice, crafting bespoke and reliable refrigeration solutions precisely tailored to meet specific needs.
3. Our committed engineering department meticulously attends to each phase of the construction process, exemplifying dedication to excellence in crafting high-quality projects that exceed expectations.
4. The vigilant after-sales department stands ever-ready, poised to ensure the continued success and satisfaction of our customers, offering unwavering support at every stage.
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.
Audited Supplier 
){kind=link}