thermography

Thermographic investigations often find application in energy consulting or for identifying the causes of problems that are related to building physics. Since this measuring technique is complex, measurement inaccuracies and errors are not uncommon. Thus in order to obtain a meaningful measurement, the object under investigation...

The book of proceedings of the 10th International BUILDAIR Symposium "Airtight Buildings, Thermography and Ventilations Systems in Practice",  held on March 31/ April 1, 2017, in Hannover, Germany. Contains 28 abstracts.

As part of an airtightness test, you not only have to determine the air change rate and/or air permeability, but must also search for leakages. Extensive leakages must be documented. However, there are no regulations as to the method of leakage detection or the instruments that might be used. In comparison with traditional...

The book of proceedings of the 9th International BUILDAIR Symposium "Airtight Buildings, Thermography and Ventilations Systems in Practice", held on 8-9 May 2015 in Kassel, Germany. Contains 18 abstracts.

The UK Government strategy for all new homes to be built to zero carbon standards by 2016 is based upon a “fabric first” approach to design. This means prioritising energy efficiency improvements to the building envelope through: increasing overall levels of insulation; reducing thermal bridging; and making buildings more airtight. However, recent research has raised concerns about the standards that are actually achieved in the construction of new housing.

This paper deals with the effect of discharging the air from a diffuser elevated above the floor. The temperatures have been measured and the airflow patterns visualised close to a diffuser for displacement ventilation, results from the whole-field method (using infrared thermography) were images of different colours representing different temperatures of the air close to the diffuser.. The aim of the measurements was to see how the elevations of the diffuser above floor level and the thermal jet length of the supply could affect the near zone.

The acquisition of temperatures and velocities is a permanent recurrent task for the investigation of air flow in ventilated rooms. On the one hand it is important to measure the temperature and velocity field with a high spatial resolution. On the other hand, in general, varying outdoor conditions prevent from reaching a steady state and an additonal demand consists in short measuring times. Sometimes, the obtained measuring results are used both to supply appropriate boundary conditions for numerical computations and to verify the CFD-codes used.