Air Handling Luminaire

Model-Based Diagnostics for Air Handling Units

Introduction In most large air-conditioned buildings, air-handling units account for a significant portion of total building energy consumption and have a major impact on comfort conditions and maintenance costs. The devices within an air-handling unit either use energy directly in the case of fans, or indirectly, in the case of heat exchangers, which impose loads on the chiller and boiler plan...

An Automated Goniophotometer for Luminaire Characterization

This paper describes the design and construction of an automated goniophotometer. It consists of an optical-photometric system mounted on a positioning system, and its purpose is defined as luminaire characterization. The proposed model is based on the use of two mirrors in order to reduce the total size of the system. This original configuration is possible due to a motion control system which...

Design Optimization of a High Power LED Matrix Luminaire

This work presents a methodology for optimizing the layout and geometry of an m× n high power (HP) light emitting diode (LED) luminaire. Two simulators are used to analyze an LED luminaire model. The first simulator uses the finite element method (FEM) to analyze the thermal dissipation, and the second simulator uses the ray tracing method for lighting analysis. The thermal and lighting analysi...

Integrating Air Handling Units in Office Buildings for High Performance

From Modelica Models to Fault Diagnosis in Air Handling Units

This paper presents a methodology for model-based fault detection and diagnosis underpinned by modelica models and using a qualitative approach to diagnosis, which has been applied to diagnosis of an air handling unit based on data recorded by a building management system. The main steps from model development to component diagnosis are discussed and illustrated using a heating coil component.