A J- type thermocouple is used to measure thetemperature in a heating process. The length ofthe bare material is 100mm and thickness is1.25mm. Find the time constant of the barematerial.K (Qуре ofThermo-Materialcouple|(J/Kg-W/m-(kg/m3)|k)oc)JIron- Constantan468535345Kromel- Alumel358738380Copper- Constantan 16O8902316ECromel - Contantan338825336INNicrocil- Nisil348702376BPt(30%)Rhodium -195615718Pt(6%) RhodiumPlatinum (13%)Rodium5516628 99PlatinumPlatinum(10%)RodiumIS52.9 1674599PlatinumTime constant of the bare material is, T=

Answered: A J- type thermocouple is used to…

A J- type thermocouple is used to measure the temperature in a heating process. The length of the bare material is 100mm and thickness is 1.25mm. Find the time constant of the bare material.

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter19: Special-purpose Outlets-water Pump, Water Heater

Section19.2: Water Heater Branch Circuit

Problem 8R: For residential water heaters, the Consumer Product Safety Commission suggests a maximum temperature...

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Concept explainers

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

Question

A J- type thermocouple is used to measure the
temperature in a heating process. The length of
the bare material is 100mm and thickness is
1.25mm. Find the time constant of the bare
material.
K (
Q
уре of
Thermo-Material
couple
|(J/Kg-
W/m-
(kg/m3)|
k)
oc)
J
Iron- Constantan
46
8535
345
Kromel- Alumel
35
8738
380
Copper- Constantan 16O
8902
316
E
Cromel - Contantan
33
8825
336
IN
Nicrocil- Nisil
34
8702
376
B
Pt(30%)Rhodium -
19
56
15718
Pt(6%) Rhodium
Platinum (13%)Rodium
55
16628 99
Platinum
Platinum(10%)Rodium
IS
52.9 16745
99
Platinum
Time constant of the bare material is, T=

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