Bimetallic strip calculation

by physiomaniac
Tags: bimetallic, calculation, strip
physiomaniac is offline
Aug25-10, 06:04 AM
P: 1
I am studying the bimetallic strip used in MCB.
I am trying to theoretically calculate the temperature rise of the strip when 1.13In (safe value of current for which the MCB shouldnot trip) is passed through the bimetallic strip. I am having the dimensions, resistivity, modulus of elasticity, flexivity, density of the strip.

I even have the practical values with me for ever few secons of current passed.
I tried to use the relation MC(dT)=I^2Rt
that is all the heat generated is used in the temperature rise.
But practically other things need to be considered like heat loss with environment, also the above formula holds good for only few seconds and here the resistivity I have taken constant will also vary.
Please help me out with a relevant solution.
Phys.Org News Partner Physics news on
Physicists design quantum switches which can be activated by single photons
'Dressed' laser aimed at clouds may be key to inducing rain, lightning
Higher-order nonlinear optical processes observed using the SACLA X-ray free-electron laser

Register to reply

Related Discussions
Properties of a bimetallic strip General Physics 2
Bimetallic Strip Advanced Physics Homework 1
Bimetallic Strip Bending Angle Introductory Physics Homework 6
Radius of Curvature of Bimetallic Strip Introductory Physics Homework 6
Question on the bimetallic rod Introductory Physics Homework 1