Modelica Buildings Library — The Complete Guide: Free Dynamic Models for HVAC and Controls

The Modelica Buildings Library is an open-source (BSD-3-Clause) library of dynamic models for energy and control systems in buildings and districts, developed by Lawrence Berkeley National Laboratory. It lets you test control strategies and system design before construction.

Modelica Buildings Library

Lawrence Berkeley National Laboratory

An open Modelica library of dynamic models for HVAC, controls, storage and district energy systems in buildings.

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What you get

HVAC components — dynamic models of equipment and air-conditioning systems.
A controls library — for building and testing control logic.
Storage and heat transfer — energy storage and heat transfer in buildings.
Multizone airflow — air movement between spaces.
Wider systems — AC and DC electrical systems, district energy networks and data-centre cooling.

What to know

This is a library, not a standalone program: you need a Modelica environment such as OpenModelica to build and run models. It suits HVAC and energy engineers willing to invest in learning Modelica — in return you get a level of dynamic and control detail that annual simulation tools lack.