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HVAC analysis

Thermal comfort, indoor air quality and energy efficiency in a building or vehicle cabin.

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Airflow and temperature distribution in a vehicle cabin
ISO 9001 EN 9100 ISO 27001 TISAX Level 3
BorgWarner Brose SGS Flex Hyundai Claas Knorr-Bremse Bosch

The aim and outcome of an HVAC analysis

The aim of an HVAC analysis is to evaluate and optimize the heating, ventilation, and air conditioning system to ensure thermal comfort, indoor air quality, and energy efficiency within a building or vehicle cabin.

The outcome of an HVAC analysis is a detailed assessment of airflow, temperature distribution, cooling and heating loads, ventilation performance, and energy consumption. These results help engineers improve system performance, occupant comfort, and operational efficiency.

Cabin temperature distribution result

Analysis types we run

Thermal analysis

  • temperature distribution and heat transfer within a building or vehicle cabin
  • used to assess heating and cooling performance

Cooling and heating load analysis

  • heating and cooling capacity required to maintain desired indoor conditions
  • forms the basis for HVAC system sizing

Airflow (ventilation) analysis

  • airflow, temperature, humidity and contaminant distribution in detail
  • identifies areas with poor ventilation, hot spots or drafts

Energy performance analysis

  • HVAC energy consumption and overall system efficiency
  • supports energy-saving and sustainability initiatives

Transient (dynamic) analysis

  • HVAC performance under changing conditions such as varying occupancy, weather or operational schedules
  • useful for evaluating system responsiveness and control strategies
CFD airflow visualization inside a coach cabin
Case study
HVAC · Bus & coach

ISO 7730 thermal comfort analysis for an autobus cabin

A thermal comfort analysis was to be performed for an autobus cabin to help coach designers select the best-suited HVAC system. We performed 3D CFD analyses with different boundary conditions and evaluated the PMV (Predicted Mean Vote) and PPD (Predicted Percentage of Dissatisfied) values acc. to ISO 7730 to investigate occupant comfort. HVAC system slots and duct design modification was suggested to improve performance and to avoid low-velocity zones.

Autobus OEM
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What are the steps in a typical project?

1

Schedule a discovery call and together we decide what is needed to achieve your design objectives.

2

Receive a proposal within 3 days. For a one-time project, a 2–4 week service package meets most clients' needs.

3

When all input data specified in the proposal is given, a kick-off call gets the project started.

4

We issue a project status report document outlining background, modeling details, boundary conditions to ensure common understanding of the details.

5

We work collaboratively and quickly to meet objectives, maintaining focus on how design variants will be impacted based on simulation results.

6

The project report is updated with simulation results and design suggestions, and meetings are used to discuss conclusions and define next steps.

7

Achieve greatness.

HVAC analysis in action

HVAC analysis of an autobus coach

  • thermal analysis and evaluation of occupant comfort values acc. to ISO 7730

HVAC analysis of a passenger car cabin

  • fault tolerant meshing of a feature-heavy geometry
  • CFD analysis of a large model

HVAC analysis of a heavy-duty vehicle cabin

  • system simulation and 3D CFD analysis of a tractor cabin

Defrosting and deicing

  • transient deicing and demisting simulations of an autobus windscreen
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Got a project that simulation could solve?

Drop your project specs below. We'll analyze your requirements and get in touch within 2 business days to discuss the technical approach.