This article deals with the measurement of temperature fields in 3D airflow using an infrared camera and the measuring net with measuring targets. This method is based on the visualization of temperature fields on an auxiliary material (paper targets) which is inserted into the non-isothermal airflows. In the article is the description of the new developed measuring equipment for visualization 3D airstreams by an infrared camera. Temperature fields are made visible by an air-heating ventilator, and consequently the temperature field is evaluated. The ventilator generates approximately a rotate-circle airstream in the axis of ventilator mouth outlet. The results are compared to the similar measurement the using the equipment for visualization a temperature field in 2D airflows by an infrared camera and the compact sheet of textile. This measuring method can be used in many various applications such as air-heating and air-conditioning. and Obsahuje seznam literatury
Thermal comfort is defined as the mental condition that expresses satisfaction with the thermal environment. It is easy to understand this definition but it is difficult to express it by mathematical equations, because it is needed to take into account many of environmental and personal parameters. The Czech standards contain the equations that describe the thermal comfort through Predicted Mean Vote (PMV) and Predicted Percentage of Dissatisfied (PPD) indexes, also describe the thermal state by the operative temperature. The objective of this article is to prove, if it is possible to estimate the thermal comfort of the environment by using the globe temperature. and Obsahuje seznam literatury