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I am still nervous and there are a lot of information that needs to be digested 

Greetings all, would you please support me to solve this problem: An extrior wall of house may be approximated by a  4 in brick with k = 0.7 w/m.k followed by 1.5 in layer of gypsum plaster ( k= 0.48 w/m.k ) what thickness of  loosely  packed rook wool insulation ( k= 0.065 w/ m.k) should be...

Thanks all for the feedback it is highly appreciated 

Upcoming October 

Let us assume the thermal conduction of insulation  is 0.016, convective coefficient is 3 thinkness of insulation layer is 2 in , the diameter of tanks is 4 in 

Thanks for the feedback let assume we have Propane storage tank and there is insulation around the tank if we add 120% more insulation what happened to the heat transfer decrease or increase?

Hi all, I am confused with critical insulation thickness in MERM page 32-11 , the question how the insulation increase and decrease heat loss?

Thanks all 

Thanks a lot it is very helpful PDF to understand tha basic of control valve 

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What are the advantages and disadvantages of the combined gas and steam cycle?

Hi all , would you please share with us the  PDF  that explain the basic regarding the control valve especially in flow characteristics and valve sizing? what are the questions that expected in this topic? thanks,

What is the most important parameter to select centrifugal pump ? Is is efficiency or impeller design or  revolution speed or flow rate 

So if we open the control valve the velocity and friction head increases upstream and downstream 

Thanks all for your feedback 

Thanks 

Are you sure of this statement? I got confused 

So the friction head loss will increase in downstream and decrease in upstream and velocity decrease in downstream and increase in upstream 

Hi, If we throttle the globe control valve to be Open 40% what happened in the downstream and upstream of the below: 1/ firiction head loss ( increase or decrease) 2/ velocity head loss ( increase or decrease)

Hi, what is the main purpose of injecting steam in gas turbine ? ( is it for cooling or reduce Nox emissions. thanks,