China Best Sales China Supplier 7.5kw Permanent Magnet Variable Frequency Screw Air Compressor Industrial Grade air compressor for sale

Product Description

Product Parameters

Technical parameters of fixed screw air compressor

Power Noise Exhaust oil content Cooling method External dimensions weight(kg) Mpa
4kw 66+2db ≤3ppm forced air cooling 850×650×800 190 0.8/1.0/1.3
7.5kw 66+2db 850×650×800 190 0.8/1.0/1.3
11kw 68+2db 1050×700×1000 300 0.8/1.0/1.3
15kw 69+2db 1250×850×1100 450 0.8/1.0/1.3
22kw 70+2db 1250×950×1200 650 0.8/1.0/1.3
30kw 72+2db 1340×1000×1250 850 0.8/1.0/1.3
37kw 73+2db 1340×1000×1250 1150 0.8/1.0/1.3

Product Description

     This series of screw air compressors is easy to install and reliable in quality. We have carefully designed and assembled them in terms of equipment economy, reliability, and operation and maintenance. The whole machine runs reliably and flexibly. Strong adaptability to environmental conditions, ensuring long-term reliable operation of the compressor.
 

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Certifications

 

 

Company Profile

 

 HangZhou Xihu (West Lake) Dis. Mechanical Group Co., Ltd. was established in 2011 and is located in HangZhou, ZheJiang , the logistics capital of China. It is a key enterprise specializing in welding and cutting equipment, seamless steel cylinders, and carbon dioxide fire extinguishers and pressure reducers. Our main products include over 10 series and over 100 varieties of seamless gas cylinders, welded steel cylinders 2KG-24KG CO2 fire extinguisher cylinder valves, high-pressure valves, gas pipeline valves, gas pressure reducer check valves, various types of valves for gas cylinders, welding and cutting equipment for electric welding machines, gas detection equipment for seamless steel cylinders, etc., widely used in industries such as chemical hospitals, metallurgy, water and electricity, coal, and mechanical processing.

    The company’s products have successively passed ISO9000 certification, CE certification, KGS certification, SNI certification, and BV certification. It has been awarded “Trustworthy Product in ZheJiang Province” and “Famous Brand Product in HangZhou City”. Quality first, honesty is the consistent service tenet of the company. “Innovation, refinement, truth and progress” is the goal that the company will always strive for. Our products have been exported to over 30 countries and regions including Africa, North America, the Middle East, and Southeast Asia, and are highly praised by domestic and foreign customers. Carefully produce every product and serve every customer with integrity.
    Customer satisfaction is the driving force for us in Xihu (West Lake) Dis. to continue moving forward!

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After-sales Service: Factory Aftermarket
Warranty: First Year
Lubrication Style: Lubricated
Samples:
US$ 1252/Piece
1 Piece(Min.Order)

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Customized on request

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Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

air compressor

Can Screw Compressors Be Used for Air Conditioning?

Yes, screw compressors can be used for air conditioning applications, particularly in larger commercial and industrial HVAC systems. Here’s a detailed explanation:

Screw compressors are a type of positive displacement compressor that can effectively handle large volumes of gas or air. They are known for their high efficiency, reliability, and ability to provide continuous operation. These qualities make screw compressors well-suited for air conditioning systems that require the compression of refrigerant gases to facilitate cooling.

In air conditioning applications, screw compressors are commonly used in two types of systems:

  • 1. Chillers: Screw compressors are frequently employed in chiller systems, which are central air conditioning units that cool water or another secondary refrigerant. In chiller-based air conditioning systems, the screw compressor works in conjunction with other components such as evaporators, condensers, and expansion valves to extract heat from the chilled water or secondary refrigerant and provide cooling to the desired space.
  • 2. Variable Refrigerant Flow (VRF) Systems: VRF systems utilize multiple individual indoor units connected to a single outdoor unit. These systems can provide simultaneous heating and cooling to different zones within a building. In VRF systems, screw compressors are often used in the outdoor units to compress the refrigerant gas, which is then distributed to the indoor units for heat exchange and cooling.

The advantages of using screw compressors in air conditioning systems include:

  • 1. High Capacity: Screw compressors are capable of handling large volumes of gas or air, making them suitable for air conditioning applications that require high cooling capacities.
  • 2. Energy Efficiency: Screw compressors can deliver high energy efficiency, especially when equipped with variable speed drives (VSD) that allow the compressor to adjust its speed based on the cooling demand. This leads to energy savings and improved system performance.
  • 3. Reliability: Screw compressors are known for their reliability and durability, making them a suitable choice for air conditioning systems that require continuous operation and long service life.
  • 4. Smooth Operation: Screw compressors operate with minimal vibration and noise, contributing to a comfortable and quiet air conditioning environment.
  • 5. Control Flexibility: Screw compressors can offer control flexibility, allowing for efficient modulation of cooling capacity based on the cooling load. This enables precise temperature control and improves overall system performance.

It’s important to note that screw compressors used in air conditioning systems require proper installation, maintenance, and periodic inspections to ensure optimal performance and longevity. Regular maintenance tasks, such as checking refrigerant levels, cleaning filters, and inspecting compressor components, should be performed in accordance with the manufacturer’s recommendations.

In summary, screw compressors can be effectively used for air conditioning applications, particularly in larger commercial and industrial HVAC systems. Their high capacity, energy efficiency, reliability, smooth operation, and control flexibility make them well-suited for chiller and VRF systems. Proper installation, maintenance, and adherence to manufacturer guidelines are essential for optimal performance and longevity of screw compressors in air conditioning applications.

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

What Is the Efficiency of Screw Compressors?

The efficiency of screw compressors can vary depending on various factors, including the design, operating conditions, and maintenance. Here’s a detailed explanation of the efficiency of screw compressors:

1. Isothermal Efficiency:

Isothermal efficiency refers to the ideal efficiency of a compressor operating under isothermal conditions. In reality, screw compressors experience temperature rise during compression, and therefore, they do not achieve isothermal efficiency. The compression process in screw compressors is considered to be relatively close to isothermal compared to other compressor types, such as reciprocating compressors. This is due to the continuous and smooth flow of air or gas through the compression chamber, which helps in minimizing temperature differences.

2. Adiabatic Efficiency:

Adiabatic efficiency refers to the actual efficiency of a compressor, taking into account the heat generated during compression. Screw compressors typically have higher adiabatic efficiency compared to reciprocating compressors. The helical design of the rotors and the presence of intermeshing lobes allow for efficient compression with minimal energy loss. The adiabatic efficiency of a screw compressor can be influenced by factors such as the compression ratio, rotational speed, and discharge pressure.

3. Overall Efficiency:

The overall efficiency of a screw compressor takes into account various factors, including mechanical losses, power consumption, and auxiliary power requirements. Mechanical losses can occur due to friction between the rotors, bearings, and other moving parts. Well-maintained screw compressors with properly lubricated components and well-aligned rotors can minimize mechanical losses and improve overall efficiency. Power consumption is another factor affecting efficiency, and it can vary depending on the size, design, and operating conditions of the compressor.

4. Energy Efficiency:

Energy efficiency is an important aspect of screw compressors. It relates to the ability of the compressor to convert electrical energy into compressed air with minimal energy waste. Energy-efficient screw compressors are designed to optimize the compression process, reduce power consumption, and maximize output for a given input. Variable Speed Drive (VSD) screw compressors, for example, can adjust the rotational speed to match the compressed air demand, resulting in improved energy efficiency and significant energy savings.

It’s important to note that the efficiency of screw compressors can vary depending on the specific model, design features, and operating conditions. Regular maintenance, including proper lubrication, cleaning, and component inspection, is crucial for maintaining high efficiency levels. Additionally, selecting the right size and type of screw compressor for the intended application is essential to achieve optimal efficiency and performance.

In summary, screw compressors are known for their relatively high efficiency compared to other compressor types. While they may not achieve perfect isothermal efficiency, their adiabatic efficiency, overall efficiency, and energy efficiency make them suitable for a wide range of industrial applications.

China Best Sales China Supplier 7.5kw Permanent Magnet Variable Frequency Screw Air Compressor Industrial Grade   air compressor for saleChina Best Sales China Supplier 7.5kw Permanent Magnet Variable Frequency Screw Air Compressor Industrial Grade   air compressor for sale
editor by CX 2024-05-06

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