27 Questions 42 Answers 0 Followers
Questions related from Steffen Schmid
Sometimes when I run parametric table of EES (sweep a variable) I have get unstable answer at some rages. For example for 0, 1, 2, 3 I get 10, 0.005, 9.5, 0.00000014 But when I don't use...
03 March 2019 1,708 6 View
Dear all, I have water, humid air and ammonia in a system and I want to do an exergy and thermoeconomic analysis. If I take the water at 25 and 1atm as a dead state, how can I calculate the exergy...
01 January 2019 7,127 5 View
Dear all researchers, What is the best way to desalinate very high saline water (up to +180000 ppm) for the purpose of ZLD? Can we use MED, MSF or TVC? (I know the scaling formation, but is...
11 November 2018 1,162 3 View
Hello, I want to know how can I find and calculate at what condition scaling occur? For example if I have a water that contain 25000 ppm Ca2+ and 500 ppm SO42-, does scaling occur at the surface...
11 November 2018 9,188 0 View
Dear all, Why does scaling occur at boiling? (can we say that the maximum concentration increase at surface at boiling so scaling occurs?) If boiling does not occur, Does we have scaling at the...
11 November 2018 9,284 6 View
Dear all, Can I find any simulation about MVR Evaporator desalination in papers or books like the following process? http://img.shbenyou.com/2014/05/1399392716Vo5Pdd.jpg Thanks
11 November 2018 452 2 View
Hi all Sometimes the flashing process are calculated with mass and balance equations like the following...
10 October 2018 7,259 1 View
Hi What is the physical meaning of "non-equilibrium allowance"(NEA) in water desalination? thanks
10 October 2018 5,044 2 View
Dear all Which book has detailed explanations about flashing process? Thanks
10 October 2018 304 17 View
Dear all researchers, I want to know that if I have an EES program, can i use it as a function of a MATLAB program? Thanks,
07 July 2018 8,285 7 View
Hi I want to know that which software is good to simulate all kinds of power plants & desalination systems? I want a very flexible software to simulate novel systems that are not common some...
05 May 2018 8,667 6 View
Hello As you know there are lots of power plant and refrigeration cycles in papers.... I want to know that is there an reference book to help me to design and introduce novel cycles? Thanks
05 May 2018 7,233 2 View
Hi, If overall cost is minimized for a system or cycle, does it mean that exergy destruction is minimized? regards,
05 May 2018 6,126 21 View
Dear all, I want to find Euro 6 standard for light-duty diesel engine in g/kWh unit. Light duty diesel engine standards are in g/km... How can i find such standard or an equal one in g/kWh? Thanks
04 April 2018 3,483 0 View
Hi, I want to know that is it possible to use nano-fluids at power plants? Are nano-fluids harmful to boiler, turbine or etc? Thanks
04 April 2018 3,848 2 View
Which is better? Ansys Forte vs AVL FIRE vs ConvergeCFD Thx
03 March 2018 7,999 1 View
Dear all, I need good and up to date resources to find out the applications of nanotechnology at industry. Thanks
02 February 2018 7,558 5 View
Hi, Previously I worked on combustion engines.... But now due to my new adviser, i want to work on nanotechnology... I want to work on a subject that relates to both nano and engine ... Do you...
02 February 2018 369 6 View
Dear all, what are the advantages/disadvantages of high compression ratio in engines? Regards
01 January 2018 8,434 15 View
Dear all researchers, Can we create a turbulent flow with the following conditions? 1- isotrope & non-homogeneous or 2- an-isotrope & homogeneous Regards,
01 January 2018 463 5 View
Hi I want to know that what are the applications and study fields of nanotechnology in Fluid Mechanics? As I read about nanotechnology applications all of them related to Material Engineering or...
01 January 2018 5,168 9 View
Dear all, I want to know that what is the reason of the usage of FEM in fluid mechanics. Isn't FVM better than FEM? Why some softwares like COMSOL sill use FEM? Is FEM has any advantages over...
12 December 2017 7,726 15 View
Hi, The stability condition for 1-D heat transfer equation is a*delta_t/delta_x^2
11 November 2017 1,639 8 View
A simple problem confused me: suppose a constant amount of heat Q and a solid body with heat capacity C and initial temperature T1. I want to calculate the final temperature of the body when heat...
11 November 2017 4,074 8 View
Hello all researchers I have a mixture of 3 fuels: iso-octane, n-heptane and n-butanol. I want to know that what species in combustion show the start of consumption of each species? Thanks
03 March 2017 7,818 13 View
Dear all I think the thermoeconomic analysis of attached paper is not correct... Can someone please help me? (see pages 293 and 299 as I have highlighted) On thermoeconomic analysis of a...
01 January 1970 9,569 6 View
Hi, Do you think the following desalination system is practical (see the attachment)? We don't need Md to reach high salinity at output...if we reduce Mf , , and keep Md constant, output salinity...
01 January 1970 576 6 View
