Centrifugal Blower Impeller Design Software

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Nowadays, ventilation engineering cannot be effective if it does not resort to specific analytical calculation programs.

Design an impeller for a centrifugal pump 9 11. Blade exit angle ( ) and blade wrap angle ( 2) are two significant parameters in the impeller optimized design process according to one-dimensional flow theory 12 15. The hydraulic performance of a centrifugal pump is mainly determined by these parameters. The radial tip centrifugal blower is designed in this work for the application of dust test chamber. The pressure and velocity of airflow at the outlet of the radial tip centrifugal blower is mostly influenced by inlet blade angle (β), impeller diameter (D2) and impeller width (b). The design procedure is elaborated and the above said. The software adjusts the parameters in accordance with the fluid properties. The software simulates the use of each type and size of fan. The software calculates diameter and width of the fan impeller. The software calculates the operating rotational speed. The software analyzes the performance and suggests the most suitable fans.

Centrix is a centrifugal fan selection program that enables a fan manufacturer to select, design, cost and quote fans for applications. This program does in a couple of minutes what an experienced fan engineer would take many hours to design and cost! Over View: Selects fans from a range of designs to suit a volume and pressure.

In the real-world, it is very common to find oversized fans operating under conditions of poor performance, resulting in excessive and unnecessary consumption of electrical energy.

Fan Types

Designed to meet the needs of the air moving industry, including HVAC, our industrial fan software is a dynamic tool that accurately performs sizing of centrifugal fans and blowers, and axial fans.

Centrifugal Fans

  • Airfoil
  • Backward Curved
  • Backward Inclined
  • Radial Blade
  • Radial Tip
  • Forward Curved
  • Pressure Blower

Axial Fans

  • Propeller
  • Tubeaxial
  • Vaneaxial
  • Variable Pitch
  • Mixed Flow

Standards

For the sizing of fans, the programming logic is developed according to engineering concepts homologated by international standards and institutions, such as:

  • AMCA - Air Movement and Control Association International, Inc.
  • ANSI - American National Standards Institute
  • ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
  • EUROVENT - Europe's Industry Association
  • ISO - International Organization for Standardization

Sizing of the Fan

The correlation functions used to calculate dimensional and physical parameters of each new fan have their origin in the classical theories of fluid mechanics, becoming known as the Fan Laws or Affinity Laws, while the noise predictions are based on acoustic principles and guidelines established by professional organizations.

For better accuracy, the software can also perform calculations and analysis improved by considering Reynolds number, Mach number, compressibility, viscosity and specific heat of the fluid.

Calculations and Analysis

In a highly organized, flexible and friendly environment, the user establishes the design requirements and the software performs all calculations and analysis necessary for sizing of the fan:

  1. The user provides the design parameters.
    • Fluid Type
    • Fluid Temperature
    • Fluid Density
    • Altitude / Elevation
  2. The software adjusts the parameters in accordance with the fluid properties.
  3. The software simulates the use of each type and size of fan.
  4. The software calculates diameter and width of the fan impeller.
  5. The software calculates the operating rotational speed.
  6. The software analyzes the performance and suggests the most suitable fans.
  7. The software generates a selection list with sorting and filtering capabilities.
  8. The software plots performance curves of the selected fan, such as the following:
    • Flow Rate × Static Pressure
    • Flow Rate × Total Pressure
    • Flow Rate × Power - Brake Horsepower
    • Flow Rate × Static Efficiency
    • Flow Rate × Total Efficiency
    • Flow Rate × Sound Pressure Level - Noise
    • Flow Rate × Sound Power Level - Noise

Sound Spectrum

In addition to the aerodynamic requirements, the user can also set the fan installation conditions.

Installation factors significantly influence the sound spectrum of the ventilation system and consequently the level of noise sensed in the environment.

  1. The user provides information about environmental characteristics and physical components of the ventilation system.
    • Noise Directivity
    • Inlet and Outlet Ducts
    • Acoustic Attenuators
    • Acoustic or Thermal Insulation
    • Noise Measurement Distance
  2. The software adjusts the acoustic parameters of the fan in accordance with the operating point.
  3. The software calculates the acoustic influence of each component of the ventilation system.
  4. The software generates a noise calculation report for the operating point.
    • Fan sound spectrum in octave bands
    • Electric motor sound spectrum
    • Set sound spectrum: fan + electric motor
  5. Lastly, the software calculates the noise for the full operating range of the fan and plots its curves.
    • Flow Rate × Sound Pressure Level - Noise
    • Flow Rate × Sound Power Level - Noise

Real Fluid

Usually, industrial fans are tested using ambient air; and their performance curves are published by manufacturers, conventionally referring to the standard parameters of this fluid at sea level.

In practice, however, most fans use air under adverse conditions, or even another type of fluid, and especially at altitudes other than sea level:

  • Hot Air
  • Cold Air
  • Saturated Air
  • Air containing Dust
  • Air containing Solvents
  • Vapors
  • Fumes
  • Exhaust Gases
  • Corrosive Gases
  • Flammable Gases
  • Explosive Gases
  • Toxic Gases
  • etc.

Obviously, the physical properties of these fluids are different:

  • Temperature
  • Relative Humidity
  • Density
  • Composition
  • Molecular Weight
  • Compressibility Coefficient
  • Viscosity
  • Specific Heat
  • etc.

Our software calculates the influence of these variants, adjusts parameters of the fans, and corrects their characteristic curves.

Thus, charts are displayed in a fully correct way, under the actual conditions of the user's application.

Compressibility

In ventilation systems, compressibility is the property of the moving fluid that reduces its volume as a function of the pressure increase resulting from the action of the fan.

Compressibility increases the density of the fluid.

The compression process generates heat which raises the outlet temperature of the fluid and consequently changes its viscosity.

All these variables modify the behavior and efficiency of the fan.

Our industrial fan software has advanced features that calculate and evaluate the influence of compressibility on fan sizing.

Viscosity

Viscosity is the physical property that characterizes the resistance of a fluid to flow.

It represents the internal friction of a moving fluid.

Unlike liquids, the viscosity of gases increases with increasing temperature.

The viscosity of the gases also increases with increasing pressure, but much less significantly.

The increase in viscosity implies an increase in the energy required to make the fluid flow and consequently changes the performance of the fan.

Our industrial fan software has advanced features that calculate and evaluate the influence of viscosity on fan sizing.

Fan Reynolds Number

In fluid mechanics applied to ventilation systems, the Reynolds number can be defined as the ratio of the inertial forces to the viscous forces within the fluid moved by the fan.

The Reynolds number makes it possible to predict whether a flow will occur in laminar or turbulent form.

If the viscous forces are dominant, the flow tends to be laminar.

If the inertial forces are dominant, the flow tends to be turbulent.

Laminar flow is characterized by smooth and constant motion of the fluid.

Turbulent flow is characterized by agitated and chaotic motion of the fluid, with eddies, vortices, backflows and other instabilities.

Therefore, the flow type changes the performance of the fan and consequently its energy consumption and efficiency.

Our industrial fan software has advanced features that calculate and evaluate the influence of Reynolds number on fan sizing.

FEG - Fan Efficiency Grade

Our industrial fan software is also prepared to meet the latest American requirements for fan efficiency classification.

The FEG classification system can be used by government agencies or regulatory bodies around the world to define the energy efficiency requirements of fans used in specific applications.

Centrifugal Blower Impeller Design Software Online

The FEG is a simple way to indicate the aerodynamic quality of the fan.

While the fan efficiency is a function of the operating point on the performance curve, the FEG is based only on the fan's peak total efficiency.

Similarly, our software also meets efficiency requirements of the European countries that prefer the FMEG classification system - Fan Motor Efficiency Grade.

Normative References:

  • ANSI / AMCA 205 - Energy Efficiency Classification for Fans
  • ISO 12759 - Efficiency Classification for Fans

Multiple Variable Graphs

In ventilation systems with variable demand, the use of adjustable speed drives is usually the best way to ensure maximum efficiency and minimum energy consumption.

Under such circumstances, it is essential that the designer has a broad view of the behavior of the fan to be selected.

Our software has the most advanced engineering charts with high resolution details, which show characteristic curves throughout the operating speed range of the fans.

Fan Performance Curves

Logarithmic Scale

Electric Motor Database

Since fans and blowers are often driven by industrial electric motors, the software has an extensive database containing data of electric motors from around the world.

IEC

  • 11 Types of Degree of Protection
  • 2880 Electric Motors

Fan's Design Setup

In addition to the operating conditions, the software allows the user to set up construction features and choose components for each fan, such as:

  • Drive Arrangement ISO - AMCA
  • Inlet Box Position - Air Entry ISO - AMCA
  • Direction of Rotation and Discharge Position ISO - AMCA
  • Motor Position for Belt or Chain Drive ISO - AMCA
  • Far Field Sound Directivity Reverberant Room Method
  • Optional Accessories Selection Manufacturer

Reports

Once the fan has been selected, the software automatically generates all the engineering reports, datasheets, charts and CAD drawings in several standard paper sizes.

The display and printing of reports use a WYSIWYG (What You See Is What You Get) interface:

  • Report of Design Data
  • Drawing of the Fan Impeller
  • Assembly Drawing of the Fan
  • Detail Drawing of Shafts and Hubs
  • Charts of Performance Curves
  • Calculation Report of Sound Spectrum

All of these documents can be easily customized, printed, emailed or exported to formats like:

  • PDF - DOC - XLS - JPG - GIF - TIF - PNG - FAX - etc.

Software Settings

As a result of customer demand for more flexible and comprehensive solutions, the software has a host of configuration options that allow the user to customize it to suit his personal wishes and preferences.

Some Configuration Screenshots

Centrifugal Blower Impeller Design Software Pdf

1) Hover over thumbnail to view enlarged image. 2) Click on thumbnail to hold enlarged image in place. 3) Click outside thumbnail to hide enlarged image.

GUI - Graphical User Interface

Built with multilingual user interface and an advanced unit converter, our software is fully capable to meet the needs and requirements of any manufacturer in the world, regardless of the volume of its production or the variety of its product range.

Software Tools

  • Multilanguage Support
  • Units of Measurement and Significant Digits
  • History Input Data
  • Custom Reports
  • Print Preview
  • Design Wizard
  • CAD Export

How to Purchase

This software is intended exclusively for fan manufacturers, so there is not a version available to individual users.

We make a customized version for each client.

The general guidelines for the implementation of this software are described in the purchasing process of our software solutions.

Get Started

If you wish to start the purchasing process or request more information about our industrial fan software, please contact us. We are able to develop a customized and exclusive version for your company.

The centrifugal pumps market is one of the most competitive in the fluid handling industry, with a large number of manufacturers and suppliers around the world.

To secure a prominent position and increase the competitiveness of their products, leading companies are providing computer programs that ensure the correct application of these products.

Unfortunately, in pumping systems it is not unusual to find that inaccurate sizing ends up compromising the credibility of high quality products.

Pump Types

Our centrifugal pump software is a dynamic tool that accurately performs hydraulic selection and sizing of rotodynamic pumps. It is equally effective for special design pumps and standard pumps according to:

  • ANSI - American National Standards Institute
  • API - American Petroleum Institute
  • ASME - American Society of Mechanical Engineers
  • DIN - Deutsches Institut für Normung e. V.
  • ISO - International Organization for Standardization

Sizing of the Pump

With a rich database of liquids which can be extended by user, the software allows a huge amount of combinations of operating conditions, such as Flow Rate, Head, Temperature, Density, Viscosity, Vapor Pressure, etc.

For the selection of centrifugal pumps, the programming logic is developed according to classical concepts of engineering and fluid mechanics with emphasis on Bernoulli's principle applied to incompressible fluid flow.

In applications with moderately viscous liquids that can be treated as Newtonian fluids, the software performs calculations for correction of viscosity and its effects on pump performance.

Among the various analysis procedures, the software warns the user about the possibility of cavitation occurrence in the pump to be selected.

Calculations and Analysis

In a highly organized, flexible and friendly environment, the user establishes the design requirements and the software performs all calculations and analysis necessary for sizing of the pump:

  1. The user supplies the design parameters.
    • Liquid Type
    • Liquid Temperature
    • Liquid Specific Gravity (Density)
    • Liquid Viscosity
    • Vapor Pressure
  2. The software adjusts the parameters in accordance with the liquid properties.
  3. The software simulates the use of each type and size of pump.
  4. The software calculates the most appropriate diameter for the impeller of each pump.
  5. The software calculates the best operating speed if required.
  6. The software analyzes the performance and suggests the most suitable pumps.
  7. The software generates a selection list with sorting and filtering capabilities.
  8. The software plots performance curves of the selected pump, such as the following:
    • Flow Rate × Head
    • Flow Rate × Required NPSH (Net Positive Suction Head)
    • Flow Rate × Shaft Power
    • Flow Rate × Efficiency
    • Flow Rate × Noise - Sound Pressure Level
Impeller

Multiple Variable Graphs

In pumping systems with variable demand, the use of adjustable speed drives is usually the best way to ensure maximum efficiency and minimum energy consumption.

Under such circumstances, it is essential that the designer has a broad view of the behavior of the pump to be selected.

Our software has the most advanced engineering charts with high resolution details, which show characteristic curves throughout the operating speed range of the pumps.

Examples of Charts from Ciclo's Software

Logarithmic Scale

Electric Motor Database

Since centrifugal pumps are often driven by industrial electric motors, the software has an extensive database containing data of electric motors from around the world.

IEC

  • 11 Types of Degree of Protection
  • 2880 Electric Motors

Reports

Once the pump has been selected, the software automatically generates all the engineering reports, datasheets, charts and CAD drawings in several standard paper sizes.

The display and printing of reports use a WYSIWYG (What You See Is What You Get) interface:

  • Report of Design Data
  • Assembly Drawing of the Pump
  • Detail Drawing of Shafts and Hubs
  • Charts of Performance Curves
  • Calculation Report of Sound Spectrum

All of these documents can be easily customized, printed, emailed or exported to formats like:

  • PDF - DOC - XLS - JPG - GIF - TIF - PNG - FAX - etc.

Software Settings

As a result of customer demand for more flexible and comprehensive solutions, the software has a host of configuration options that allow the user to customize it to suit his personal wishes and preferences.

Centrifugal Blower Impeller Design Software

Some Configuration Screenshots

Centrifugal Blower Impeller Design Software Free

1) Hover over thumbnail to view enlarged image. 2) Click on thumbnail to hold enlarged image in place. 3) Click outside thumbnail to hide enlarged image.

GUI - Graphical User Interface

Built with multilingual user interface and an advanced unit converter, our software is fully capable to meet the needs and requirements of any manufacturer in the world, regardless of the volume of its production or the variety of its product range.

Software Tools

  • Multilanguage Support
  • Units of Measurement and Significant Digits
  • History Input Data
  • Custom Reports
  • Print Preview
  • Design Wizard
  • CAD Export

How to Purchase

This software is intended exclusively for pump manufacturers, so there is not a version available to individual users.

We make a customized version for each client.

The general guidelines for the implementation of this software are described in the purchasing process of our software solutions.

Get Started

If you wish to start the purchasing process or request more information about our centrifugal pump software, please contact us. We are able to develop a customized and exclusive version for your company.