China Good quality Wholesale Hsn7461-70 CHINAMFG for Refrigeration Applications air compressor for sale

Product Description

COPELAND CHINAMFG for Refrigeration Applications

 

Product Description

TECHNICAL PARAMETERS

NOTE: Please contact us to help you with your selection and provide more technical information.

ABOUT US

ZHIYUN Refrigeration Equipment Co., Ltd. is a comprehensive enterprise integrating manufacturing, trade and engineering. Founded in 1982, we have 3 production plants (cold storage panel and door, refrigeration unit and heat exchange equipment), 1 sales company and 1 engineering company in ZheJiang Province. We have passed the ISO9001:2015 quality management system certification, SGS certification, the CRAA product certification of China’s refrigeration and air conditioning industry, and the capability level certification of China’s equipment maintenance and installation enterprises (Class C, II). Through 40 years’ efforts, we have developed into a professional refrigeration company with considerable scale, reputation and influence in China, serving CHINAMFG local enterprises. Good quality and reliable service help us gain credibility all over the world, and we have set up our dealers in Southeast Asia and Africa.

ZHIYUN offers wide range of high-quality products required for refrigeration system, which are widely used in many fields such as food market, marine, medicine, chemical industry, workshop, distribution center and logistics.

Products Range

  1. Compressor (official distributor of CHINAMFG brands)
  2. Condensing Unit (scroll, reciprocating and screw), Water Chiller
  3. Polyurethane Cold Storage Panel and Door
  4. Evaporator, Condenser
  5. Refrigeration Accessories (official distributor of CHINAMFG brands, including valves, refrigerant, refrigeration oil, tools, etc.)
  6. Refrigeration Electric Control System
  7. Quick Freezing Room and Quick-Freezing Tunnel

Service Range

  1. Cold Room Design
  2. Refrigeration System Design
  3. Undertake Cold Storage Projects in Nearby Countries
  4. Online Technical Support and After-Sale Service

Nonstandard customization and labeling production are highly welcomed.

Company Photos

Certificates

Exhibition

Packaging and Shipping

FAQ

1. Q: Are you a manufacturer?
    A: Yes, we are manufacturer. Non-standard customization and OEM service are both welcomed and available.
2. Q: Can I get the warranty?
    A: Yes, under the condition that the user apply the equipment correctly, we provide 1 year quality warranty.
3. Q: How to buy?
    A: Please contact us by email or online at first, and then we will offer our proposal and quotation based on your demand.
4. Q: How to pay?
    A: 30% of total amount to be paid before production, and the balance payment before shipment.
5. Q: How to ship?
    A: We work with experienced shipping agent who could arrange your delivery on the cheapest and fastest way. Our closest port is HangZhou.
6. Q: What about the delivery date?
    A: 10-30 days, depends on the order.
7. Q: What about the maintenance?
    A: All the products are tested before shipment, and maintenance is easy. We provide patient pre-sale service and considerate after-sale service.

OUR ADVANTAGES

1. More than 40 years of professional refrigeration industry experience, understand the cold storage, understand the cold storage equipment, understand the customer needs even better.
2. Our own cold storage PU panel factory, refrigeration equipment factory and evaporator factory, complete product line, guaranteed quality, convenient one-stop purchase.
3. Considerate after-sales service, on-site debugging and installation are avaible.

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After-sales Service: Available
Warranty: 12-Month
Lubrication Style: Lubricated
Cooling System: All Available
Power Source: AC Power
Cylinder Position: Vertical
Customization:
Available

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air compressor

How Does Variable Speed Control Work in Screw Compressors?

Variable speed control in screw compressors is a technology that allows the compressor’s rotational speed to be adjusted according to the compressed air or gas demand. This control method offers several benefits in terms of energy efficiency and system performance. Here’s a detailed explanation:

Variable speed control, also known as variable frequency drive (VFD) or inverter control, works by adjusting the speed of the compressor’s drive motor. The drive motor is typically an electric motor that powers the rotation of the compressor’s screw rotors.

The key components and operation of variable speed control in screw compressors are as follows:

  • 1. Drive Motor: The drive motor is connected to the compressor’s screw rotors and provides the rotational power required for compression. It is an electric motor capable of operating at variable speeds.
  • 2. Inverter or Variable Frequency Drive (VFD): The inverter or VFD is an electronic device that controls the speed of the drive motor. It converts the incoming electrical power into adjustable frequency and voltage, allowing precise control of the motor’s rotational speed.
  • 3. Control System: The control system of the screw compressor monitors and adjusts the speed of the drive motor based on the compressed air or gas demand. It receives input signals from sensors that measure parameters such as pressure, flow rate, or system demand, and sends corresponding signals to the inverter or VFD to regulate the motor speed.
  • 4. Speed Adjustment: When the demand for compressed air or gas decreases, the control system reduces the motor speed by decreasing the frequency and voltage supplied by the inverter or VFD. This results in a lower rotational speed of the screw rotors, reducing the compression capacity and power consumption of the compressor.
  • 5. Energy Efficiency: Variable speed control allows the compressor to match the output to the actual demand, avoiding energy wastage associated with constant-speed compressors. By operating at lower speeds during periods of lower demand, energy consumption can be significantly reduced. This energy-saving capability is particularly advantageous in applications with varying air or gas requirements.
  • 6. Smooth Operation: Variable speed control enables smooth and gradual motor acceleration and deceleration, minimizing mechanical stress on the compressor components and reducing the likelihood of sudden pressure surges or system shutdowns.
  • 7. System Stability: By adjusting the compressor’s speed to match the demand, variable speed control helps maintain stable system pressure and prevents excessive cycling of the compressor. This contributes to improved system performance and longevity.

It’s worth noting that variable speed control is more commonly found in larger screw compressors used in industrial and commercial applications. Smaller screw compressors may utilize fixed-speed motors due to cost considerations or simpler system requirements.

Overall, variable speed control in screw compressors offers precise capacity modulation, improved energy efficiency, enhanced system stability, and reduced maintenance requirements, making it a preferred choice in many applications where compressed air or gas demand fluctuates.

air compressor

Can Screw Compressors Be Used for Medical Air Supply?

Yes, screw compressors can be used for medical air supply. Here’s a detailed explanation:

Screw compressors are commonly employed in various applications, including medical air supply systems. Medical air is a critical utility in healthcare facilities, used for various purposes such as respiratory therapy, anesthesia, and surgical tools. Here are some key points to consider:

1. Reliability and Efficiency:

Screw compressors are known for their reliability and efficiency. They can provide a continuous and reliable source of compressed air, ensuring a stable supply for medical applications. The rotary screw design allows for smooth and efficient compression, minimizing energy consumption and maximizing system performance.

2. Oil-Free Operation:

In medical applications, it is crucial to ensure the purity of the compressed air. Screw compressors can be designed and certified to provide oil-free air, eliminating the risk of oil contamination in the medical air supply. Oil-free screw compressors incorporate specialized sealing systems and filtration to prevent oil carryover, making them suitable for medical air applications.

3. Air Quality Standards:

Medical air must meet specific air quality standards to ensure patient safety and treatment effectiveness. Standards such as the European Pharmacopoeia (Ph. Eur.) or the United States Pharmacopeia (USP) define the required purity levels for medical air, including limits on particulate matter, moisture content, and microbial contamination. Screw compressors can be equipped with appropriate filtration and purification systems to meet these standards.

4. Integrated Drying and Filtration:

Some screw compressors designed for medical air applications incorporate integrated drying and filtration systems. These systems remove moisture and contaminants from the compressed air, ensuring it meets the required quality standards. Integrated drying systems can include refrigerated dryers, desiccant dryers, or membrane dryers, depending on the specific needs of the medical air supply system.

5. Redundancy and Backup Systems:

Medical air supply systems often require a high level of reliability and continuity. Screw compressors can be configured with redundancy and backup systems to ensure uninterrupted supply. Multiple compressors can be installed in parallel, with automatic switching mechanisms to maintain supply in case of a compressor failure or maintenance activities.

6. Monitoring and Alarms:

Modern screw compressors used in medical air supply systems often feature advanced monitoring capabilities. They can continuously monitor and record key parameters such as pressure, temperature, and system performance. Alarms and alerts can be configured to notify operators or maintenance personnel in case of abnormal conditions or potential issues with the compressor.

7. Compliance with Standards and Regulations:

When using screw compressors for medical air supply, it is essential to comply with relevant standards and regulations. These may include medical device regulations, electrical safety standards, and guidelines specific to medical gas systems. Compliance ensures that the medical air supply system meets the necessary safety and quality requirements.

In summary, screw compressors can be used for medical air supply, providing reliable and efficient compressed air for various medical applications. With their reliability, oil-free operation, adherence to air quality standards, integrated drying and filtration capabilities, and the ability to incorporate redundancy and monitoring features, screw compressors are well-suited for medical air supply systems in healthcare facilities.

air compressor

Are There Different Types of Screw Compressors?

Yes, there are different types of screw compressors available, catering to various application requirements. Here’s an overview of the main types:

1. Oil-Injected Screw Compressors:

Oil-injected screw compressors, also known as lubricated screw compressors, are the most common type. These compressors require the injection of a small amount of lubricating oil into the compression chamber. The oil serves multiple purposes, including lubrication, cooling, sealing, and reducing friction between the rotors. Oil-injected screw compressors are widely used in industrial applications where a small amount of oil in the compressed air is acceptable.

2. Oil-Free Screw Compressors:

Oil-free screw compressors are designed to operate without the need for oil lubrication. These compressors incorporate specialized rotor coatings, such as PTFE (polytetrafluoroethylene) or other non-stick materials, to reduce friction and eliminate the need for oil. Oil-free screw compressors are preferred in applications that require oil-free and contaminant-free compressed air. Industries like food and beverage, pharmaceuticals, electronics, and others often rely on oil-free screw compressors to ensure the purity of the compressed air.

3. Variable Speed Drive (VSD) Screw Compressors:

VSD screw compressors, also known as variable frequency drive (VFD) screw compressors, are equipped with a variable speed drive system. This system allows the compressor to adjust the rotational speed of the motor and, consequently, the speed of the screw rotors. By varying the speed, VSD screw compressors can closely match the compressed air or gas demand, resulting in energy savings and improved efficiency. VSD screw compressors are particularly beneficial in applications with varying air demand, as they can adapt their output accordingly.

4. Two-Stage Screw Compressors:

Two-stage screw compressors consist of two sets of rotors arranged in series. The first stage compresses the air or gas to an intermediate pressure, and the second stage further compresses it to the desired final pressure. Two-stage screw compressors are commonly used in applications that require higher discharge pressures. By dividing the compression into two stages, these compressors can achieve higher efficiency and improved performance in high-pressure applications.

5. Water-Injected Screw Compressors:

Water-injected screw compressors, also known as liquid-injected screw compressors, utilize water or a water-glycol mixture as a sealing and cooling medium. The water injection helps in sealing the compression chamber and reduces the discharge temperature, enhancing the compressor’s efficiency. Water-injected screw compressors are often used in applications where oil contamination is a concern, such as in the pharmaceutical and food processing industries.

Each type of screw compressor has its own advantages and is suitable for specific applications. The choice of the screw compressor type depends on factors such as the desired level of air purity, the need for oil-free operation, energy efficiency requirements, and the operating conditions of the application.

China Good quality Wholesale Hsn7461-70 CHINAMFG for Refrigeration Applications   air compressor for saleChina Good quality Wholesale Hsn7461-70 CHINAMFG for Refrigeration Applications   air compressor for sale
editor by CX 2024-05-03

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