# chemical engineer

### chiller in refrigerators ?

why the chillers or ice makers in regrigerators are always at the top? is there any fundamentals of heat transfer linked with it???

3 AnswersEngineering1 decade ago### temperarure-viscosity-velocity relationship?

I would like to know that if a gas/liquid is flowing through a CS pipe having fixed parameters. Now if i start increasing the temperature of the fluid, what will happen to the viscosity and thereafter to the velocity of the fluid.

1 AnswerEngineering1 decade ago### question on thermodynamics???

the air from a glass tube is completely evacuated and the tip of the tube is fused and sealed. you are now asked to break the tip of the tube, wait a few seconds, and then dip the tube into a beaker contatinig water, keeping the tip just below the water surface. Do you expect the water to rise into the glass tube, or do you expect air bubbles to come out of the tube into the water? explain the basis of your expectations.

2 AnswersPhysics1 decade ago### modified problem in contraction mapping?

f T is a contraction mapping, how could i show that T^n (i.e. T raise to the power n) is also a contraction mapping??? for n>1, is inverse true? why?

3 AnswersMathematics1 decade ago### question on contraction mapping?

If T is a contraction mapping, how could i show that T^n (i.e. T raise to the power n) is also a contraction mapping???

please help me out??? I hav to submit the proof tommorow...

3 AnswersMathematics1 decade ago### where I could find the answers to the problems of Advanced engineering Thermodynamics???

This book is writte by Adrian Bejan. If any body could provide the web link for that one.

1 AnswerEngineering1 decade ago### how could i solve this differential equation?

square (h) +[hsin(theta)* dh/d(theta)] =1

this can be read as : h square + h into sin theta * differential of h w.r.t. theta = 1

here h is function of theta

h= h(theta)

1 AnswerMathematics1 decade ago### what is the physical meaning of mean, variance and standard deviation???

thanks in advance

4 AnswersMathematics1 decade ago### why polyproplene is not formed from free radical mechanism?

1 AnswerChemistry1 decade ago### given a vector space (column vector) of dimension 1 , how i can construct a vector space orthogonal to it?

and what is the dimension of that vector space?

5 AnswersMathematics1 decade ago### I am asking three different questions on mathematics.?

what is a one to one function?

what is an invertible matrix?

given the vector space of a matrix, how can we construct another vector space which is orthogonal to the former vector space?

4 AnswersMathematics1 decade ago### do the eigen values of hermittian matrix positive real nos.?

3 AnswersMathematics1 decade ago### what is the difference between top spin and back spin of a cricket ball?

4 AnswersPhysics1 decade ago### what is the difference between motion and translation?

10 AnswersPhysics1 decade ago### solution of diffusion heat equation for cylindrical coordinate system? some web sources i could check out?

I want to calculate the effective conductivity of the cylinders(infinitely long and dilute) in a matrix where the heat is transported due to diffusion perpendicular to the axis of the cylinders. how to solve using heat equation for diffusion controlled system(as it is here). the cylinders will act as particles n the rest of the region will be called matrix. it is same to the problem of small spheres where the temp gradient is linear.

1 AnswerEngineering1 decade ago### why log(0) not defined?

13 AnswersMathematics1 decade ago