China Best Sales Air to Air Rooftop Packaged Unit CHINAMFG /Danfoss Compressor air compressor parts

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Product Description

Product Description
Panels and frame are made from galvanized steel protected with polyester powder painting to ensure total resistance to
atmospheric agents.
Direct expansion coils with condensate drain tray.
Hermetic compressor
High efficiency scroll compressor for the whole range, with built-in thermal overload cut-out and crankcase heater,
mounted on rubber vibration dampers
Ripple type acoustic insulation for compressor section, and thermal insulation for coil and fan section, low noise
Centrifugal fan
Forward curve centrifugal fans for air treatment section and axial fans for condensation section
Front, side and underside air discharge of the treatment unit
High external pressure, long air supply distance
Electric panel
Electric panel consists of breakers and contactors for compressors and fan motors, phase sequence relay and other
necessary protection devices for the main components
Easy operation line controller
Error indication
Timing on/off
Economizer with fresh, return air dampers and fresh air hood
Free cooling function for low ambient temperature
Low ambient control device for operation of outdoor units at ambient temperatures from less than 20°C down to -10°C
BMS devices
T3 (Tropical climate)
Roof curb
Metal / aluminum filter
Heat recovery to 100%
Evaporating section: double skin with 50mm polyurethane foam
Optional water heating coil
Metal or plastic mesh on condenser coil
Optional supply / return air configurations
Upgraded plug fan
G4 filter, plate and bag filter
Technical Data

Cooling capacity kW 44.5 50 60 70 90 105
Heating capacity kW 48.7 54.3 64 75.4 96.2 113.2
Power supply   380V / 3Ph / 50HZA
Cooling power input kW 17 19.5 22.8 26.7 32.9 39.7
Heating power input kW 15.6 18 21 24.8 30.4 36.7
Start current A 168 186 175 199 197 266
Working current in cooling A 31.7 35.6 39.9 48.3 61 70.6
Working current in heating A 29.9 33.5 37.5 45.4 57.3 66.3
Throttle methods Thermal expansion valve
Circuits 2 2 2 2 3 3
Refrigerant R410A
Comp. Type Scroll type        380V / 3Ph / 50HZA
Qty 2 2 2 2 3 3
Condensor side
Condensor Type Al+copper tube
Axial fan Qty 1 1 1 1 2 2
Drive Direct drive
Motor power kW 0.25 0.37 0.37 0.55 0.75 0.75
Air flow m/h 4600 7800 7800 9000 12600 12600
Evaporator side
Evaporator Type Al+copper tube
Centrifugal fan Qty 1 1 1 1 1 1
Motor power kW 3 3 4 4 5.5 5.5
Air flow m/h 7600 8500 10900 12500 16000 19500
Drive Direct drive Belt drive
External static pressure(Pa) 250 250 300 300 300 300
Filter Aliuminum frame filter G3
Noise level dB(A) 73 73 73 75 74 75
Dimension L mm 2268 2268 2298 2298 2878 2878
W mm 1440 1440 1650 1650 2140 2270
H mm 1167 1167 1400 1400 1964 1964
Weight kg 750 770 830 860 1160 1350


Type: Evaporative Air Cooler
Air Tube Material: Galvanized Sheet
Corrosion Durability: Higher
Operating Voltage: 380/400 VAC
Noise Level: Ordinary
Application Fields: Mechanical Engineering


air compressor

What is the role of air compressors in power generation?

Air compressors play a significant role in power generation, supporting various operations and equipment within the industry. Here are some key roles of air compressors in power generation:

1. Combustion Air Supply:

Air compressors are used to supply compressed air for the combustion process in power generation. In fossil fuel power plants, such as coal-fired or natural gas power plants, compressed air is required to deliver a steady flow of air to the burners. The compressed air helps in the efficient combustion of fuel, enhancing the overall performance and energy output of the power plant.

2. Instrumentation and Control:

Air compressors are utilized for instrumentation and control systems in power generation facilities. Compressed air is used to operate pneumatic control valves, actuators, and other pneumatic devices that regulate the flow of steam, water, and gases within the power plant. The reliable and precise control provided by compressed air ensures efficient and safe operation of various processes and equipment.

3. Cooling and Ventilation:

In power generation, air compressors are involved in cooling and ventilation applications. Compressed air is used to drive air-operated cooling fans and blowers, providing adequate airflow for cooling critical components such as generators, transformers, and power electronics. The compressed air also assists in maintaining proper ventilation in control rooms, substations, and other enclosed spaces, helping to dissipate heat and ensure a comfortable working environment.

4. Cleaning and Maintenance:

Air compressors are employed for cleaning and maintenance tasks in power generation facilities. Compressed air is utilized to blow away dust, dirt, and debris from equipment, machinery, and electrical panels. It helps in maintaining the cleanliness and optimal performance of various components, reducing the risk of equipment failure and improving overall reliability.

5. Pneumatic Tools and Equipment:

In power generation plants, air compressors provide the necessary compressed air for operating pneumatic tools and equipment. These tools include impact wrenches, pneumatic drills, grinders, and sandblasting equipment, which are utilized for installation, maintenance, and repair tasks. The high-pressure air generated by compressors enables efficient and reliable operation of these tools, enhancing productivity and reducing manual effort.

6. Nitrogen Generation:

Sometimes, air compressors are used in power generation for nitrogen generation. Compressed air is passed through a nitrogen generator system, which separates nitrogen from other components of air, producing a high-purity nitrogen gas stream. Nitrogen is commonly used in power plant applications, such as purging systems, blanketing in transformers, and generator cooling, due to its inert properties and low moisture content.

7. Start-up and Emergency Systems:

Air compressors are an integral part of start-up and emergency systems in power generation. Compressed air is utilized to power pneumatic starters for gas turbines, providing the initial rotation needed to start the turbine. In emergency situations, compressed air is also used to actuate emergency shutdown valves, safety systems, and fire suppression equipment, ensuring the safe operation and protection of the power plant.

Overall, air compressors contribute to the efficient and reliable operation of power generation facilities, supporting combustion processes, control systems, cooling, cleaning, and various other applications critical to the power generation industry.

air compressor

What is the energy efficiency of modern air compressors?

The energy efficiency of modern air compressors has significantly improved due to advancements in technology and design. Here’s an in-depth look at the energy efficiency features and factors that contribute to the efficiency of modern air compressors:

Variable Speed Drive (VSD) Technology:

Many modern air compressors utilize Variable Speed Drive (VSD) technology, also known as Variable Frequency Drive (VFD). This technology allows the compressor motor to adjust its speed according to the compressed air demand. By matching the motor speed to the required airflow, VSD compressors can avoid excessive energy consumption during periods of low demand, resulting in significant energy savings compared to fixed-speed compressors.

Air Leakage Reduction:

Air leakage is a common issue in compressed air systems and can lead to substantial energy waste. Modern air compressors often feature improved sealing and advanced control systems to minimize air leaks. By reducing air leakage, the compressor can maintain optimal pressure levels more efficiently, resulting in energy savings.

Efficient Motor Design:

The motor of an air compressor plays a crucial role in its energy efficiency. Modern compressors incorporate high-efficiency electric motors that meet or exceed established energy efficiency standards. These motors are designed to minimize energy losses and operate more efficiently, reducing overall power consumption.

Optimized Control Systems:

Advanced control systems are integrated into modern air compressors to optimize their performance and energy consumption. These control systems monitor various parameters, such as air pressure, temperature, and airflow, and adjust compressor operation accordingly. By precisely controlling the compressor’s output to match the demand, these systems ensure efficient and energy-saving operation.

Air Storage and Distribution:

Efficient air storage and distribution systems are essential for minimizing energy losses in compressed air systems. Modern air compressors often include properly sized and insulated air storage tanks and well-designed piping systems that reduce pressure drops and minimize heat transfer. These measures help to maintain a consistent and efficient supply of compressed air throughout the system, reducing energy waste.

Energy Management and Monitoring:

Some modern air compressors feature energy management and monitoring systems that provide real-time data on energy consumption and performance. These systems allow operators to identify energy inefficiencies, optimize compressor settings, and implement energy-saving practices.

It’s important to note that the energy efficiency of an air compressor also depends on factors such as the specific model, size, and application. Manufacturers often provide energy efficiency ratings or specifications for their compressors, which can help in comparing different models and selecting the most efficient option for a particular application.

Overall, modern air compressors incorporate various energy-saving technologies and design elements to enhance their efficiency. Investing in an energy-efficient air compressor not only reduces operational costs but also contributes to sustainability efforts by minimizing energy consumption and reducing carbon emissions.

air compressor

How is air pressure measured in air compressors?

Air pressure in air compressors is typically measured using one of two common units: pounds per square inch (PSI) or bar. Here’s a brief explanation of how air pressure is measured in air compressors:

1. Pounds per Square Inch (PSI): PSI is the most widely used unit of pressure measurement in air compressors, especially in North America. It represents the force exerted by one pound of force over an area of one square inch. Air pressure gauges on air compressors often display pressure readings in PSI, allowing users to monitor and adjust the pressure accordingly.

2. Bar: Bar is another unit of pressure commonly used in air compressors, particularly in Europe and many other parts of the world. It is a metric unit of pressure equal to 100,000 pascals (Pa). Air compressors may have pressure gauges that display readings in bar, providing an alternative measurement option for users in those regions.

To measure air pressure in an air compressor, a pressure gauge is typically installed on the compressor’s outlet or receiver tank. The gauge is designed to measure the force exerted by the compressed air and display the reading in the specified unit, such as PSI or bar.

It’s important to note that the air pressure indicated on the gauge represents the pressure at a specific point in the air compressor system, typically at the outlet or tank. The actual pressure experienced at the point of use may vary due to factors such as pressure drop in the air lines or restrictions caused by fittings and tools.

When using an air compressor, it is essential to set the pressure to the appropriate level required for the specific application. Different tools and equipment have different pressure requirements, and exceeding the recommended pressure can lead to damage or unsafe operation. Most air compressors allow users to adjust the pressure output using a pressure regulator or similar control mechanism.

Regular monitoring of the air pressure in an air compressor is crucial to ensure optimal performance, efficiency, and safe operation. By understanding the units of measurement and using pressure gauges appropriately, users can maintain the desired air pressure levels in their air compressor systems.

China Best Sales Air to Air Rooftop Packaged Unit CHINAMFG /Danfoss Compressor   air compressor partsChina Best Sales Air to Air Rooftop Packaged Unit CHINAMFG /Danfoss Compressor   air compressor parts
editor by CX 2023-10-08

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