China OEM Super Energy Efficiency 8bar~10bar Class 0 Oil-Free Two-Stage Pm VSD Rotary Single Screw Type Air Compressor for Sale 12v air compressor

Product Description

2~40bar DIRECT-DRIVE WATER-INJECTED OIL-FREE SCREW AIR COMPRESSOR (PM VSD)
 

1. Low temperature means more efficiency
With an exceptionally low running temperature of less than 60ºC, near isothermal compression is achieved. 
The superior cooling capability of water removes the heat and gives more air per kW of power.
This also eliminates the need for an internal cooler and aftercooler, the associated power consumption reduces pressure drop to a minimum.

2. Cutting the maintenance cost
Spare parts only need air filter elements and water filter elements
Low operating temperature ensures the long service life of the screw air end, avoiding expensive maintenance costs for the screw rotor.
Low temperature reduces the stress on other components ensuring long life.

3. Avoiding the costs of extra energy to combat pressure drop
These costs, although not apparent at the time of purchase, are very high and contribute substantially to the total cost of ownership.

4. No Gearbox No need for associated oil lubrication.

5. Simple structure 
Fewer moving parts than the dry oil-free screw air compressor, meaning there is less to go wrong, 
while balance bearing loads extend the compression element service life for low-cost operation. 

 

Product Parameters

 

Product Description

 

Company Profile

 

 

Hot Sale Products

 

 

 

           2~10bar Oil-injected                        7~16bar All-in-1                       Small Single-phase
       Screw Air Compressor                   Screw Air Compressor                 Screw Air Compressor  

 

         2~40bar 100% Oil-free                   8~12bar 100% Oil-free                Diesel Engine Portable
       Screw Air Compressor                   Scroll Air Compressor                 Screw Air Compressor  

 

 

Main Product

 

What we can supply:

* Oil-injected Screw Air Compressor (2~16 bar)
* All-in-1 Screw Air Compressor with Tank, Dryer, and Filters (7~16 bar)
* Single-phase Small Screw Air Compressor for Home use (8~10 bar)
* Water-injected Oil-free Screw Air Compressor (2~40 bar)
* Oil-free Scroll Air Compressor (8~12 bar)
* Diesel&Electric Engine Portable Screw Air Compressor (8~30 bar)
* Air Dryer, Air tank, Filters, and other Spare parts

 
 

After-sales Service: 24*7 Online Services and Video Guide
Warranty: 1 Year for The Whole Machine & 2 Years for Air End
Lubrication Style: Oil-free
Cooling System: Air Cooling
Power Source: AC Power
Installation Type: Stationary Type
Customization:
Available

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air compressor

How Do You Select the Right Size Screw Compressor for Your Needs?

Choosing the right size screw compressor is crucial to ensure optimal performance, energy efficiency, and cost-effectiveness for your specific compressed air or gas requirements. Here’s a detailed explanation of the selection process:

Selecting the right size screw compressor involves considering several key factors:

  • 1. Air or Gas Demand: Determine your compressed air or gas demand by assessing the total required flow rate (measured in cubic feet per minute or liters per second) and the operating pressure (measured in pounds per square inch or bar). This information helps establish the compressor’s capacity requirements.
  • 2. Duty Cycle: Evaluate your operation’s duty cycle, which refers to the percentage of time the compressor will be running. Duty cycles can vary from continuous operation to intermittent or seasonal usage. The duty cycle affects the compressor’s sizing, as it determines the required compressor output and influences the compressor’s cooling and maintenance needs.
  • 3. Ambient Conditions: Consider the environmental conditions in which the compressor will operate. Factors such as temperature, humidity, and altitude can impact the compressor’s performance and cooling requirements. Ensure that the selected compressor is suitable for the specific ambient conditions of your facility.
  • 4. System Pressure Requirements: Determine the minimum and maximum operating pressure requirements for your application. This information is essential in selecting a compressor that can consistently deliver the required pressure range throughout its operating range.
  • 5. Efficiency Considerations: Evaluate the energy efficiency of different compressor models. Look for compressors with high energy efficiency ratings, such as those certified by organizations like the Air Compressor and Gas Association (CAGI) or ENERGY STAR. Energy-efficient compressors can significantly reduce operating costs over the equipment’s lifespan.
  • 6. Future Expansion: Consider any anticipated growth or changes in your compressed air or gas demand. If you expect increased demand in the future, it’s advisable to select a compressor with some extra capacity to accommodate future expansion without requiring immediate replacement.
  • 7. Maintenance and Serviceability: Assess the maintenance requirements and serviceability of different compressor models. Look for features that make routine maintenance tasks, such as filter changes or oil checks, easily accessible and convenient. Consider the availability of service technicians and spare parts for the chosen compressor brand or model.
  • 8. Manufacturer and Supplier Support: Research the reputation and track record of compressor manufacturers and suppliers. Choose established brands known for producing reliable, high-quality equipment. Consider factors such as warranty coverage, technical support availability, and the proximity of service centers.

Once you have gathered the necessary information and considered the factors mentioned above, you can consult with compressor manufacturers or suppliers who can provide expert advice and assist in selecting the right size screw compressor for your specific needs. They can perform detailed calculations, taking into account the factors discussed, to recommend a compressor that matches your requirements and provides optimal performance.

It’s important to note that selecting the right size screw compressor is a critical decision, and professional guidance is highly recommended to ensure an accurate assessment and proper matching of the compressor to your specific needs.

In summary, selecting the right size screw compressor involves assessing your compressed air or gas demand, duty cycle, ambient conditions, pressure requirements, efficiency considerations, future expansion plans, maintenance requirements, and manufacturer support. By considering these factors and seeking expert advice, you can choose a screw compressor that meets your needs and delivers reliable, efficient performance.

air compressor

What Is the Impact of Ambient Temperature on Screw Compressor Performance?

Ambient temperature has a significant impact on the performance of screw compressors. Here’s a detailed explanation:

Screw compressors, like other types of compressors, rely on the surrounding environment to dissipate heat and maintain optimal operating conditions. The ambient temperature directly affects the compressor’s efficiency, capacity, power consumption, and overall performance.

Here are the key ways in which ambient temperature influences screw compressor performance:

1. Cooling Efficiency:

The cooling efficiency of a screw compressor is affected by the temperature difference between the compressed gas and the ambient air. As the ambient temperature increases, the temperature difference decreases, making it more challenging to transfer heat effectively. This can lead to higher discharge temperatures and reduced cooling efficiency, potentially impacting the compressor’s overall capacity and performance.

2. Capacity and Power Consumption:

Higher ambient temperatures can decrease the capacity of a screw compressor. Compressors are typically designed and rated based on specific operating conditions, including a defined ambient temperature range. When the ambient temperature exceeds the design limits, the compressor may experience reduced volumetric efficiency, resulting in a decrease in its overall capacity. Additionally, the compressor may require more power to maintain the desired pressure levels, leading to increased power consumption.

3. Heat Recovery:

In some applications, screw compressors are equipped with heat recovery systems to utilize the waste heat generated during compression. The effectiveness of heat recovery is influenced by the ambient temperature. Higher ambient temperatures can reduce the temperature differential available for heat exchange, limiting the potential for heat recovery and decreasing the overall system efficiency.

4. Lubrication and Cooling:

Screw compressors rely on lubrication systems to reduce friction and prevent wear between moving parts. The ambient temperature affects the performance of the lubricant. In high ambient temperatures, the lubricant may experience decreased viscosity, potentially leading to inadequate lubrication and increased wear on compressor components. Similarly, the cooling system of the compressor, including fans and heat exchangers, may be less effective in higher ambient temperatures, impacting the compressor’s ability to dissipate heat.

5. Operating Envelope:

Screw compressors have specified operating envelopes, which define the acceptable range of operating conditions, including ambient temperature. Operating the compressor outside its designed ambient temperature range can result in reduced reliability, increased maintenance requirements, and potential system failures. It is crucial to adhere to the manufacturer’s guidelines and ensure that the compressor operates within the recommended ambient temperature limits.

6. Control and Protection:

Modern screw compressors often feature advanced control and protection systems that monitor various parameters, including ambient temperature. These systems may adjust compressor operation, such as modulation of capacity or cooling strategies, to optimize performance and protect the compressor from operating outside safe limits. Understanding the impact of ambient temperature allows for appropriate adjustments and settings to maintain reliable and efficient compressor operation.

It’s important to note that different compressor models and manufacturers may have specific performance characteristics and operating limits. Therefore, consulting the manufacturer’s documentation and guidelines for the particular screw compressor in use is essential.

In summary, ambient temperature significantly affects the performance of screw compressors. Higher ambient temperatures can reduce cooling efficiency, decrease compressor capacity, increase power consumption, and impact lubrication and cooling systems. Adhering to recommended operating conditions and considering ambient temperature limitations are crucial for ensuring optimal performance, reliability, and longevity of screw compressors.

air compressor

How Does a Screw Compressor Work?

A screw compressor operates based on a unique rotary positive displacement principle. Here’s a detailed explanation:

Working Principle:

A screw compressor consists of two helical rotors, typically referred to as male and female rotors, that rotate in opposite directions within a housing. The rotors have specially designed profiles that interlock with each other, creating a series of compression chambers as they rotate. The compression chambers gradually reduce in volume as the rotors rotate, compressing the air or gas trapped inside.

Suction Process:

The suction process begins when the rotors start rotating. As they rotate, the helical lobes or threads on the rotors create expanding spaces between them. The expanding spaces draw in the air or gas from the inlet port, allowing it to enter the compression chamber. The suction process continues as the rotors rotate, and the expanding spaces move the air or gas towards the discharge side of the compressor.

Compression Process:

As the air or gas enters the compression chamber, it gets trapped between the interlocking lobes or threads of the rotors. As the rotors continue to rotate, the trapped air or gas is carried along the length of the rotors. The volume of the compression chamber gradually decreases as the lobes or threads of the rotors intermesh, compressing the air or gas. The compression process is continuous and smooth as the air or gas moves from the suction side to the discharge side of the compressor.

Discharge Process:

Once the air or gas reaches the discharge end of the compression chamber, it is pushed towards the outlet port. The compressed air or gas is then released from the compressor through the outlet port to be used for various applications.

Oil-Injected and Oil-Free Variants:

Screw compressors are available in both oil-injected and oil-free variants. In oil-injected screw compressors, a small amount of lubricating oil is injected into the compression chamber. The oil provides lubrication, cooling, and sealing between the rotors, reducing friction and minimizing wear. The oil-injected variant is commonly used in industrial applications where a small amount of oil in the compressed air is acceptable.

Oil-free screw compressors, on the other hand, are designed to operate without the need for oil lubrication. These compressors use 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, such as in the food and beverage, pharmaceutical, and electronics industries.

In summary, a screw compressor works by utilizing interlocking helical rotors to compress air or gas. The rotating rotors draw in the air or gas during the suction process, and as they rotate, the trapped air or gas is compressed within the compression chamber. The compressed air or gas is then discharged from the compressor. Screw compressors are available in oil-injected and oil-free variants, catering to different application requirements.

China OEM Super Energy Efficiency 8bar~10bar Class 0 Oil-Free Two-Stage Pm VSD Rotary Single Screw Type Air Compressor for Sale   12v air compressorChina OEM Super Energy Efficiency 8bar~10bar Class 0 Oil-Free Two-Stage Pm VSD Rotary Single Screw Type Air Compressor for Sale   12v air compressor
editor by CX 2023-10-08

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