China best CHINAMFG Z Series Oil Free Screw Air Compressor ZT15 ZT18 ZT22 with Good quality

Product Description

Atlas Copco Z series Oil Free Screw Air Compressor
Model: ZT15 ZT18 ZT22

Total capability, total responsibility
Right at the heart of your business, CHINAMFG delivers quality compressed air for superior operational capacity. From compressed air generation to point of use, you can choose from
Our wide range of products to create a complete compressed air system tailored to your specific
Needs. All CHINAMFG products are engineered to integrate seamlessly, ensuring the highest level
Of reliability and energy efficiency. As a result, CHINAMFG can take full responsibility for your
Compressed air infrastructure with a guarantee of best-in-class quality. With a global presence in
Over 150 countries, we can provide an unrivalled service to maintain and continually improve your
Compressed air system performance. Backed by 100 years at the forefront of compressed air, CHINAMFG products offer the finest quality and efficiency. Our goal is to be First in Mind- First in Choice. That is why Atlas Copco’s pursuit of innovation never ceases, driven by the dedication to meet and exceed your demands. Always working with you, we are committed to providing the customized air solution that is the driving force behind your business. 

ZT/ZR air compressors, designed to meet the needs of people like you. 
The Maintenance Engineer Oil in compressed air will attack downstream equipment, causing increased maintenance requirements and increased plant downtime. 
Operator and service friendly
Low maintenance requirements
The Financial Manager
Low cost oil lubricated compressors may look attractive, but when considering the total operating costs compared to Oil Free compressors, the extra investment in a ZT/ZR will easily pay for itself. 
Easy and low cost installation
Low energy consumption
The Safety and Environment Manager
Breathing oil fumes is definitely not a good idea and oil contami- nates condensate can damage the environment. Why do it the hard way, when you can do it the smart way with ZT/ZR oil free compressors. 
No condensate management problems
Silenced package
The Quality Manager
Do not accept the possibility of product contamination, and reduced
Product quality. Only Oil Free compressors can offer a 100%
Guarantee of Oil Free Air. 
No product spoilage
Consistent performance over the compressor lifetime
The General Manager
If you require maximum reliability and energy efficiency to improve your total operating costs, the ZT/ZR provides you with the optimum compressed air generation solution. 
Proven reliability
The most cost effective solution

Bestrand is a leading supplier of compressed air system. Past 10 years, we established very good partnership with Atlas Copco. We have provided all kinds of products from CHINAMFG include air compressor, after treatment, spare parts to customers all over the world. Pls feel free to contact us for a quote. 

After-sales Service: 1. Give the first maintenance of the machine for 5
Warranty: One year warranty
Lubrication Style: Oil-free
Cooling System: Air Cooling
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

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 Do Screw Compressors Compare to Piston Compressors?

Screw compressors and piston compressors are two common types of compressors used for various applications. Here’s a detailed comparison between these two types:

1. Working Principle:

Screw Compressors: Screw compressors use intermeshing rotors (usually a male and female rotor) to compress air or gas. The rotors rotate in opposite directions, creating compression chambers that gradually reduce in volume, compressing the air or gas. Piston Compressors: Piston compressors, also known as reciprocating compressors, use a piston and cylinder arrangement to compress air or gas. The piston moves back and forth within the cylinder, creating compression by reducing the volume of the chamber.

2. Continuous vs. Intermittent Compression:

Screw Compressors: Screw compressors provide continuous compression, which means they can deliver a steady flow of compressed air or gas without pulsations. The compression process is smooth and continuous, resulting in less vibration and noise. Piston Compressors: Piston compressors provide intermittent compression due to the reciprocating motion of the piston. The compression process is characterized by pulsations, resulting in pressure fluctuations and higher vibration levels compared to screw compressors.

3. Efficiency:

Screw Compressors: Screw compressors are known for their relatively high efficiency. They can achieve higher isothermal and adiabatic efficiency compared to piston compressors. The smooth and continuous compression process in screw compressors minimizes energy losses and heat generation, resulting in improved efficiency. Piston Compressors: Piston compressors have lower overall efficiency compared to screw compressors. The reciprocating motion of the piston leads to energy losses due to friction, heat generation, and pressure pulsations. These factors can reduce the efficiency of piston compressors, especially at higher compression ratios.

4. Size and Portability:

Screw Compressors: Screw compressors are generally more compact and require less space compared to piston compressors of similar capacity. They have a simpler design with fewer moving parts, making them relatively lightweight and easier to install. Screw compressors are often mounted on a skid or integrated into compact packages, offering convenient portability. Piston Compressors: Piston compressors are typically larger and bulkier compared to screw compressors of similar capacity. They have more complex designs with multiple moving parts, including pistons, connecting rods, and valves. The larger size and weight of piston compressors make them less portable and require more installation space.

5. Maintenance and Service:

Screw Compressors: Screw compressors generally require less maintenance compared to piston compressors. They have fewer moving parts, reducing the chances of wear and tear. Screw compressors often have longer service intervals and lower maintenance costs. However, proper lubrication and regular inspections are still necessary to ensure optimal performance and efficiency. Piston Compressors: Piston compressors require regular maintenance due to the higher number of moving parts. Components such as pistons, rings, valves, and bearings may require more frequent inspections, lubrication, and replacements. Maintenance costs and service intervals for piston compressors are typically higher compared to screw compressors.

6. Noise and Vibration:

Screw Compressors: Screw compressors operate with lower noise and vibration levels compared to piston compressors. The continuous and smooth compression process in screw compressors results in reduced vibrations and quieter operation, making them suitable for noise-sensitive environments. Piston Compressors: Piston compressors can generate higher noise levels and vibrations due to the reciprocating motion of the piston and the pulsations during compression. Additional measures, such as sound insulation and vibration dampening, may be required to minimize noise and vibration in piston compressors.

Both screw compressors and piston compressors have their advantages and disadvantages depending on specific application requirements. Screw compressors are favored in applications that demand continuous and efficient compression with minimal pulsations and lower noise levels. Piston compressors are suitable for applications that require intermittent compression, lower initial investment, and simplicity. Factors such as desired flow rate, pressure range, operating conditions, and cost considerations play a crucial role in selecting the appropriate compressor type for a given application.

China best CHINAMFG Z Series Oil Free Screw Air Compressor ZT15 ZT18 ZT22   with Good qualityChina best CHINAMFG Z Series Oil Free Screw Air Compressor ZT15 ZT18 ZT22   with Good quality
editor by CX 2023-10-09

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