NH3/CO2 Cascade Refrigeration System
1. NH3/CO2: The Principles of Cascade Refrigeration System
The innovative NH3/CO2 cascade refrigeration system is ingeniously divided into two segments: the high-temperature stage utilizing NH3 as the refrigerant and the low-temperature stage employing CO2. In this sophisticated setup, NH3 evaporates in the high-temperature level to condense the CO2 gas expelled from the low-temperature level. A specialized condensation evaporator serves as the bridge between these stages, acting dually as the condenser for the CO2 stage and the evaporator for the NH3 stage, ensuring seamless interaction and enhanced efficiency.
Within this advanced system, the CO2 refrigerant efficiently absorbs heat through the end evaporator, transferring it to the high-temperature NH3 refrigerant via the condensing evaporator. The NH3 then disseminates this heat to the high-temperature condenser, releasing it into the environment with the help of a cooling medium. Post-condensation, CO2 enters the reservoir and proceeds through a dryer filter and throttle valve to the CO2 gas-liquid separator. The liquid CO2 is propelled by a circulation pump to the CO2 evaporator, and after evaporation, returns as two-phase CO2 to the gas-liquid separator. The gaseous CO2 is drawn into the compressor and compressed back to the condensing evaporator, perpetuating the entire cascade refrigeration cycle with precision.
In the NH3/CO2 cascade refrigeration system, the high and low temperature stages each utilize a single refrigerant, creating a dual-structured equipment composition. The high-temperature NH3 refrigeration system mirrors a conventional setup with additional components like a condenser, liquid storage, gas-liquid separator, and throttling device. Meanwhile, the low-temperature CO2 system boasts a CO2 compressor, condensing evaporator, reservoir, gas-liquid separator, filter dryer, pump, throttling device, evaporator, and expansion vessel, all integrated to maximize performance and reliability.
The The CO2 gas-liquid separator plays a critical role in segregating CO2 gas droplets from the evaporator in the compressor refrigeration system, preventing wet strokes in the compressor and stabilizing the liquid level during pump operation. When the pump halts, it collects any liquid returning from end equipment and pipelines. If utilized as a CO2 reservoir during downtime, its volume must accommodate the entire system's CO2 liquid. An auxiliary evaporator is crucially positioned atop the separator to avert excessive CO2 pressure post-shutdown. In the NH3/CO2 cascade system, the condensing evaporator functions dually as an NH3 side evaporator and a CO2 side condenser, where compound liquids evaporate and absorb heat internally, while CO2 gas condenses into a liquid externally.
2. Advantages of the NH3/CO2 Cascade Refrigeration System
(1) Significantly Reduced NH3 Risk Factors:
(1.(1)) The NH3/CO2 cascade system substantially diminishes NH3's condensing pressure and charge, reducing it to approximately 1/10 of traditional ammonia systems;
(1.(2)) NH3 is confined to the machine and equipment rooms, akin to a "tiger in a cage," safeguarded by skilled professionals;
(1.(3)) Optimal utilization of NH3's excellent heat transfer properties at high temperatures to effectively cool CO2.
(2) CO2 as a Safe Medium: CO2 is safely integrated into personnel-dense operational spaces (e.g., single-freezing machines) and warehouses, ensuring the protection of both individuals and assets.
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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 premier manufacturer, Qingdao Bingyan Refrigeration Equipment Co., Ltd. takes pride in offering tailored solutions to match your precise needs. If you're uncertain about which Advanced Refrigeration Compressor for Aquatic Products with Electric Drive suits you best, simply reach out to us. Our team is here to assist you every step of the way.Our talented team of professional engineers is dedicated to crafting bespoke solutions, ensuring each product meets your unique specifications. Trust in our expertise to deliver a refrigeration solution that perfectly aligns with your requirements.
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Qingdao Bingyan Refrigeration Equipment Co., Ltd. Established in 2011 in the stunning coastal city of Qingdao, Qingdao Bingyan Refrigeration Equipment Co., Ltd. is a cutting-edge high-tech company. We are a comprehensive powerhouse in the realm of industrial and commercial freezing, cold storage, and refrigeration systems. Our expertise spans research and development, innovative design, and the precise manufacturing and sales of premium refrigeration equipment.
Since our inception, we have been driven by the guiding force of 'science and technology' while ensuring superior 'management' to meet the evolving market demands. Our commitment to excellence in customer service fuels our ambition to deliver impeccable refrigeration system solutions, world-class products, and unparalleled services to our esteemed clientele.
Our company takes pride in holding over ten prestigious national technology patents. We are consistently dedicated to pioneering the research and development of high-efficiency, energy-saving, and environmentally conscious refrigeration solutions. Our product range includes top-tier refrigeration units, energy-efficient barrel pumps, and PLC intelligent program control boxes, each crafted with precision and innovation.
Our expertise is showcased in the tailored program design and equipment customization for a spectrum of projects. These include food quick-freezing storage, food cold storage, ultra-low temperature cold storage, and medicine storage. Additionally, we excel in fruit and vegetable air-conditioning storage, workshop air conditioning, as well as quick-freezing, freeze-drying, and thawing devices, each engineered to perfection.
At BINGYAN, we are passionately committed to delivering scientifically advanced and highly efficient refrigeration system solutions. Our dedication extends beyond just installation; we pride ourselves on offering premium engineering services and unparalleled after-sales support.
Bingyan offers a full spectrum of services, encompassing everything from initial sales and intricate design to flawless construction and attentive after-sales assistance.
1. Our sales department is adept at precisely discerning and understanding customer needs, ensuring that client intentions are conveyed with accuracy. We maintain robust and continuous communication to keep our clients fully informed.
2. Our design department is committed to providing expert and insightful engineering advice. We craft meticulously tailored refrigeration plans that are both reliable and stable, perfectly aligning with customer specifications.
3. With unwavering dedication, our engineering department treats every construction phase with utmost seriousness. We meticulously complete each task, striving for perfection to consistently deliver outstanding, high-quality projects.
4. Our after-sales department remains vigilant and ready, ensuring our customers' continued success with prompt and reliable support.
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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