For example, a flexible thermoelectric device was fabricated using chromel
(90% nickel and 10% chromium) and constantan (55% copper and 45% nickel) layers covered by a flexible sheet made of polyimide and copper.
The working, counter, and reference electrodes were a stainless steel substrate, coiled chromel
wire, and a saturated calomel reference (SCE), respectively.
Workability is the major selection factor: Type K thermocouples are designed for inert atmospheres and if the applications are associated with the after effects of oxidizing then Type K Chromel
and Alumel thermocouples are the best bet.
The thermocouples are chosen for use in temperature measurements; the thermocouple type is K-type (Chromel
+, Alumel -).
The classical thermoelectric materials used in devices are metals and metallic alloys, for example, Al, Cu, Ni, Bi, Sb, chromel
, and alumel as well as semiconductors PbTe and [Bi.sub.2][Te.sub.3].
When the furnace had reached the predefined temperature, the sample was lowered into the hottest place inside the furnace by using a chromel
wire to ensure rapid heating of the sample.
The thermocouples used are of K type, chromel
(+), alumel (-) alumel, and the measurement field are -50 ...
As such, we are developing connectors under similar assumptions with more exotic materials, such as chromel
, alumel, inconel, tellurium, and composites for thermal coupling through a contact system.
The measurement of temperature along the length of the combustion chamber is measured using K-Type Chromel
- Alumel Thermocouples.
A 4-probe measurement geometry was used with chromel
or platinum lead wires attached to the ends of the samples and Type K (Type M8 and L) or R(Type M10) thermocouple probes attached to the sides.