Modelon’s Environmental Control Library is a Modelica library for aircraft environmental control systems analysis and design. The library is designed to study energy consumption and thermal conditions that affect the level of comfort for passengers and crew.

These performance aspects are driven by large variations in ambient conditions such as humidity and temperature. The models provided by Environmental Control Library account for these effects through first principles and fully support bidirectional flow.

The library has been developed internally at Modelon for a number of years together with a European airframer, and starting with version 3.1 it is publicly available. Modelon is now able to offer out of the box a library reinforced through industrial collaboration deployment.

The library provides an efficient and numerically robust framework suitable for large-scale complex systems. Component models include heat exchangers, compressors, turbines, ejectors or jet pumps, water separator, valves, cabin and pipes.

Release Information
Product Sheet
Air conditioning performance assessment.
The bleed air from the engine is directed to the primary heat exchanger where it is cooled with ambient ram air. The air is then compressed and cooled down further in the main or secondary heat exchanger. A high pressure water separation loop allows for the extraction of free moisture.
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Benefits

  • Flexible composition of user-defined system architectures for efficient model management
  • Real-time capable high performance models enabling Hardware-In-the-Loop (HIL) applications
  • Full support for bidirectional flow for analysis of all modes of operation on ground and in flight
  • Efficient property models of moist air enabling robust and fast simulation of large-scale systems
  • Online visualization of simulation results for intuitive understanding of the system behavior
  • Configurable model fidelity for faster simulation and right complexity level.

Application

The Environmental Control Library is being used successfully by industry in system performance assessment and control system design.

The models are used to verify how the resulting system robustly delivers air conditioning and auxiliary cooling to all aircraft thermal loads.
Application Include:

  • Design and assessment of bleed and bleedless architectures
  • Control system verification
  • Full vehicle thermal management
  • Verification of critical components – is sufficient moisture extracted in the high pressure water separation loop.

Feature News & Blog

Modelon Announces Release of 2019.1

May 1, 2019

Modelon is pleased to announce the release of 2019.1 for products within the Modelon Library Suite and Modelon Creator Suite. Detailed release notes are available below and on the product pages. Modelon products are sold and distributed directly from Modelon, as well as approved resellers.

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Increase speed of air conditioning model simulations using Modelon’s Air Conditioning Library and Vapor Cycle Library

April 11, 2019

This blog provides an introduction of the Spline-Based Table Look-up (SBTL) method as well as a sample use case from Ford Motor Company – who utilized the SBTL refrigerant package to speed up their air conditioning system model simulations.

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Modelon Announces Release of 2018.2

October 17, 2018

Modelon is pleased to announce the release of 2018.2 for products within the Modelon Library Suite, Modelon Creator Suite, and Modelon Deployment Suite. Detailed release notes are available and can be found on the individual product pages as well as clicking the links below.

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Case Study: Rimac’s Journey Towards Full Vehicle System Simulation

September 12, 2018

Rimac, a Croatia-based automotive technology powerhouse, needed a more efficient and flexible way to evaluate multi-physics powertrain systems. Read their story…

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