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Finally I passed PE thermal and fluid exam after the fourth attempt 

Hi, let us assum 100 efficient regenerator in Bryton cycle and the temperature leaving compressor and entering regenerator is 1034R and temperature leaving regenerator and entering combustion chamber is 1684R and the exhaust temperature leaving turbine and entering regenerator is 1735R what is...

Hi, what is the other description of latent cooling? Is it relative latent cooling or absulte latent cooling?

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...

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

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 

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,

Hi , We have a steam power cycle ( Rankine) if we increase pressure of steam before entering a steam turbine what happened to the following: 1- cycle efficiency. 2- volumatiric flow rate of steam ( drcreased or increased) 3- mass flow rate ( decresed or increased ) 4- load on condenser (...

Would you please advise what is the best online course for the PE mechanical thermal and fluid discipline?

Hi all, would you please provide the correct equations for affinity law for pumps with shaft speed hold constant ? thanks 

Good day all, would you please explain the mass balance for problem #510 ( heater) of NCEES sample test? thanks

Greetings all, would you please exapain how the author did the mass balance for question 140 ( heater problem) in NCEES sample test version 2017? it is not clear for me. Your feedback is highly appreciated. regards,

Why do we need to add electric generator after turbine in gas turbine application? to increase efficiency or to increase power

What is the best refrigerant for resprocating compressor? It is R-410 or R-134 a