System Simulation for Efficient HVAC Technology

From the system layout to individual components to the development of the controls to testing: Secure your competitive advantage with system simulation and develop powerful, energy-efficient and eco-friendly systems for heating, cooling and air conditioning!

Optimum dimensioning of an air conditioning system:

Find the best configuration in terms of performance, efficiency and a low ecological footprint through simulations:

Sophisticated air conditioning improves overall comfort in vehicles, buildings or the workplace and ensures controlled environmental conditions in industrial processes. The increase in comfort, however, is based on a considerable plus in energy consumption. Moreover, many coolants for air conditioning systems are not very eco-friendly. Analyze different technologies and system layouts with respect to their performance and energy efficiency.

Reduce the energy consumption of your air conditioning system and improve the eco-friendliness of your heating, cooling and ventilation systems.

Temperature control devices and ventilation systems can be found throughout many application scenarios, for example to ensure comfortable living and working conditions, or for the transport of temperature-sensitive goods or for temperature-dependent industrial processes.

  • Identify the optimum system layout for your air conditioning system through system simulation.
  • Analyze the behavior of the entire system including compressors, pipes and tubes, heat exchangers, pumps etc. and also controls and sensors with just one multiphysics model.
  • Investigate the impact of each individual component on the performance and the efficiency of the system and make an appropriate choice.
  • Examine the influence of eco-friendly coolants (e.g. CO2) on the performance and the operating behavior of the air conditioning system.
  • Design your ventilation system fast and efficiently in such a way that it can provide each passenger with comfortable conditions at a minimum power demand.
  • Find the right balance between heating/cooling performance, energy efficiency and comfort.
  • Reduce your operating costs through optimized interactions of all components.
  • Verify the system’s reliability with fault tree and failure mode and effect analyses.

  • Evaluate new technologies for heat exchangers (e.g. micro channel heat exchangers) and see through quantitative analyses what actual benefits they yield for your particular application.
  • Analyze the physical behavior of individual components (e.g. condensers and heat exchangers) in detail. You can calculate the optimum dimensioning of the heat sink through parameter variation in a single model.
  • Optimize the pneumatic pipe system and the flow rates to minimize losses.

  • Increase accuracy of the temperature controller (especially for industrial processes and cooling systems) fast and efficiently with a single virtual simulation model.
  • Test the control system for pressure and humidity with automated virtual tests.
  • Develop the optimum control concept for different hardware and operating conditions to meet your customers’ needs.

Do you want to understand the physical behavior of your heat exchangers in detail?

Read the paper on “Detailed Modelling of Heat Exchangers“ and learn how you can perform efficient and detailed analyses of dynamic effects and the distribution of thermodynamic state variables in heat exchangers.


For passenger cars, commercial vehicles and rolling stock, industrial processes and building technology: Secure competitive advantages through simulation of HVAC systems

In the automotive industry, for rolling stock or in aerospace: Reduce the energy consumption of your air conditioning system and optimize ventilation and temperature stability

  • Energy-efficient air conditioning ensures that more electrical energy remains available in the battery of electric vehicles for a greater range: Calculate the optimum configuration for the HVAC system in electric vehicles for maximum energy efficiency.
  • Lower the fuel consumption of the air conditioning system in cars and trucks. System simulation lets you test various layouts fast and efficiently and helps you find the best solution for cost reduction and environmental protection.
  • Increase passenger comfort in busses, trams and trains through reliable air conditioning with low operating costs even in extreme weather conditions.
  • Optimize heat exchangers in order to achieve optimal ventilation with a minimum of thermal losses.
  • Analyze temperature stability for the transportation of goods with commercial vehicles under various environmental conditions.

Passenger cabins for agricultural and construction machinery: Finding the optimal layout for air conditioning systems through simulation

  • Ensure a pleasant work ambient at low operating costs, e.g. in mobile machinery.
  • Examine, especially for agricultural and construction machinery, the effects of dusty air filters on the performance and the energy consumption of the fresh air supply.
  • Evaluate the load on the vehicle’s battery through a retrofitted air conditioning system.

Air conditioning for rolling stock

Read the full paper on the consumption optimization of auxiliary systems in electric locomotives by Alexander Heghmanns from the Dresden University of Technology. Simply register with our Customer Center and download the paper from the Knowledgebase for free!


HVAC for buildings and machinery: Calculating the required cooling power efficiently with a simulation model while optimizing the temperature controls for industrial air conditioning

  • Ensure a stable and precise control of the temperature in sensitive processes, also for disturbances, through an optimized controller layout: Simulations deliver quick and reliable information about the controls’ behavior for any situation.
  • Ensure fast cooling and heating of the process area at low operating costs.
  • Check the cooling system virtually before commissioning: Components and parameters are easily and efficiently configured through a simulation model.

Air conditioning in buildings

  • Investigate the energy consumption of the entire air conditioning system in a building or building complex with a single simulation model for different weather and climate conditions as well as geographical orientation and shade conditions.
  • Develop energy-efficient and economical HVAC systems for buildings with a simulation model for high living comfort through controlled ventilation including waste heat recovery and passive houses.
  • Become a pioneer in the field of Smart Home Systems through virtual commissioning: Optimize the operating strategy of your air conditioning system through weather data and a simulation model of your building.
  • Adapt the cooling performance of your HVAC system precisely to the individual requirements.
  • Optimize a building’s air conditioning for heating in winter times and for cooling in summer making the most of occurring waste heat.
  • Simulations help you test alternative air conditioning concepts for buildings including heat pumps and thermal storage in conjunction with volatile energy sources, such as solar thermal power. Back up your investment even before the construction starts.

Our energy team – Your personal point of contact for building technology

Our committed team for energy and building technologies is happy to advise you on all sorts of questions about the simulation of air conditioning in buildings. Visit also our homepage section on energy technology to learn more about simulation solutions for customers from the energy and construction industries.

Our Team

Becoming a pioneer in the field of HVAC systems through clever, virtual solutions

With SimulationX, you can develop economical, powerful and reliable air conditioning systems, their components and their controls fast and efficiently. Be it at the modeling, simulation or analysis stage – with clever software solutions, you achieve your goal fast and reliably.


  • Easy connection of mechanical, electrical, fluidic and thermodynamic assemblies
  • Animated state charts of fluids
  • Animated energy and power flows throughout the entire system
  • Interfaces with MATLAB/Simulink for the controller development
  • Comprehensive selection of coolants and refrigerants
  • Large number of ready-to-use models of various heat exchangers

For more information on SimulationX, click here.

ESI ITI – Software and engineering services from one source

The committed team of software developers and engineers at ESI ITI develop not only the simulation software SimulationX, but they also support you in the integration of system simulation into your workflow and offer comprehensive engineering services in the field of system simulation. Contact our experts and visit our homepage section on engineering services.

Our Engineering
  • Mahindra & Mahindra

    Modeling and real-time simulation of an automobile HVAC system in SimulationX

    about Mahindra's project
  • TU Dresden

    See how the Dresden University of Technology examines complex thermodynamic effects in refrigeration systems with SimulationX.

    About the project
  • Loading...