Abstract
The article deals with the field usability determination of the method for measuring temperature fields in the air using an infrared camera. This method is based on the visualization of temperature fields on an auxiliary material, which is inserted into the non-isothermal air flow. In this article the field usability is determined from time constants of this method, which define borders of usability for low temperature differences (between air flow temperature and surrounding temperature) and for low air flow velocities. The field usability determination for measuring temperature fields in the air can be used in many various applications such as air-heating and air-conditioning where the method of measuring temperature fields in the air by infrared camera can be used.
Highlights
The measurement method of temperature fields is based on the usage of the auxiliary material on which the temperature fields are displayed
During the visualization of the air temperature field on the surface of the auxiliary material, conduction heat transfer occurs the distribution and the temperature field scattering in the sheet of this material
The area of field usability is based on limiting the range of the temperature difference and the range of the velocity nonisothermal air flow, which depend on the time constant of the method
Summary
The measurement method of temperature fields is based on the usage of the auxiliary material on which the temperature fields are displayed. This auxiliary material is placed to the air-stream of monitored area [3]. The convective heat flow changes the surface temperature of auxiliary material which is measured by the infrared camera. The conduction heat flow creates the temperature field on surface of the auxiliary material and this surface temperature can be considered as the air temperature of this area
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