Chauvin Arnoux C.A 1875, Руководство пользователя

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When the bench is started up, L1 lights until the plate reaches approximately 55°C.
When this temperature is reached, L2 lights and the plate cools to approximately
50°C. Heating resumes, with the lighting of L1, and so on. This cycle continues
indefinitely for as long as the bench is in operation.
5. MANIPULATIONS
Look up the operating instructions for the use of the RayCAm.
Before any new manipulation, create a new thermogram recording folder.
During the manipulations, save as many images as possible.
5.1 THERMAL TRANSFERS
5.1.1 Theory
To correctly understand the events involved, it is important to know the phenomena
that underlie evolutions or changes of temperature.
There are three thermal transfer modes:
- Conduction
- Convection
- Radiation
These three modes can be present simultaneously, independently of one another.
A heat flux is a quantity of thermal energy per unit of time. A transfer flow occurs
only when there is a temperature difference. Thermal energy is transferred from a
hot body to a cold body.
It is necessary first of all to understand the thermal phenomena involved.
Conduction.
In physics, thermal conductivity is the parameter used to quantify the ability of a
body to conduct heat. It represents the quantity of heat transferred per unit of area
and per unit of time under the action of a temperature difference between the two
ends of a sample of the body, and therefore in the presence of a temperature
gradient.
Consider the example of a metal bar that is heated at one of its ends: the thermal
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