Usługi w zakresie badań, certyfikacji, szkoleń i inspekcji

HomeFan (air blowers) tests

Fan (air blowers) tests

We offer professional fan testing. We are a leader in the field of testing and certification of ventilation equipment, operating according to the highest standards of quality and safety.

Our services are aimed at both manufacturers and end users wishing to ensure maximum efficiency and reliability of their equipment. Characteristics are determined in accordance with the standards and regulations of the ECOPROJEKT.

Industrial fan research at COCH

Fans - Key Flow Machines

Fans are fluid machines that play a key role in moving vapors and gases. They are commonly used in air conditioning, refrigeration, dust collection, drying installations, and many other applications. Depending on the design and the direction of the flow of the medium through the impeller, fans are divided into centrifugal and axial types.

Types of Fans

Centrifugal Fans: These fans intake air axially and discharge it radially, making them ideal for applications requiring higher pressure increases.

Axial Fans: These fans intake and discharge air in the axial direction, making them suitable for situations requiring higher airflows.

Classification of Fans by Pressure Increase

Fans can be categorized into three types based on the magnitude of the pressure increase ΔPc they achieve:

  • Low-pressure Fans: ΔPc up to 720 Pa.
  • Medium-pressure Fans: ΔPc from 720 to 3600 Pa.
  • High-pressure Fans: ΔPc from 3600 to 30000 Pa.

Other Criteria for Classifying Fans

Fans can also be classified based on:

  • Installation Method: Suction, suction-discharge, discharge.
  • Application: Explosion-proof, roof, pneumatic transport.
  • Number of Impellers: Single-stage, multi-stage.
  • Method of Medium Intake: Single-intake, double-intake.

Key Fan Parameters

The performance characteristics of a fan depend on several key parameters:

  • Flow Rate: The volumetric flow rate of the medium moved by the device.
  • Pressure Increase: The difference between the total pressure at the outlet and the total pressure at the inlet.
  • Power Requirement: The energy needed to drive the fan.
  • Useful Power: Calculated as the product of the flow rate, total pressure increase, and a correction factor accounting for the compressibility of the gas.
  • Overall Efficiency: The ratio of useful power to shaft power.

Fan Characteristics

The purpose of fan testing is to determine its characteristics, which show the internal working conditions of the fan, depicting the relationship between pressure and volumetric flow rate. For each fan and each rotational speed, there is a characteristic curve that can be determined experimentally. Knowing this characteristic is essential for the proper selection of a fan for specific applications and for evaluating the correctness of its operation.


Quality accreditation - a guarantee of trust

The AB 308 Refrigeration Equipment Laboratory is accredited by the Polish Accreditation Center and specializes in testing refrigeration equipment.

Our team consists of qualified and experienced specialists who offer comprehensive assistance in the process of preparation for testing and the refrigeration equipment tests themselves. With our services, we provide customers with reliable and professional service at every stage of cooperation.

Contact information

Below you will find a list of contact information for COCH Refrigeration Equipment Laboratory

  • Testing services
  • Trainings
  • Certification
  • Inspection services
  • Order service
  • News