Investigation of the Performance of Mock-Target IR Thermography for Indoor Air Temperature Measurements under Transient Conditions
Description
This work aims to investigate the response of the methodology of Mock Target IR Thermography (Fokaides et al., 2016) to conditions of transient variation of indoor air temperature. For this purpose, measurement under lab conditions and numerical analysis with the use of finite element modelling (FEM) was applied. Specifically, measurements were implemented to examine the behaviour of air temperature, under thermal transient conditions, in the environmental chamber of the Kaunas University of Technology (KTU). The investigation concerned the use of different means of air heating (underfloor heating, radiator heating, ventilation heating) under controlled conditions. Validated numerical models were developed using FEM, with the aim to extend the scope of the assessment under various conditions. It was concluded that the mock target IR Thermography applies accurately for the case of transient air temperature, as well as for different rates of temperature change, with an average temperature deviation of 0.4 [%] according to the measurements and 1.74 [%] based on the simulations.