Rasool Bahrampoury

12 Questions 50 Answers 0 Followers

Questions related from Rasool Bahrampoury

Why minimum duration is assigned for valve testing in API 6D?

According to API 6D, minimum duration for hydrotest is 2 to 30 minutes. What happens if the duration exceeds those. Is n't there a maximum time?

04 February 2019 1,589 3 View

I want to simulate a simple solar heating in TRNSYS, can any one help?

I have simulated as shown in the figure. But when I want to see the heating load, no curve is shown. Please help.

06 July 2015 3,252 5 View

Can anyone help me in using EES for NH3H2O mixture?

I can call NH3H2O using Call NH3H2O (Code, In1, In2, In3: T, P, x, h, s, u, v, Qu), but when I write it in a procedure, an error of not having equal sign. I know there is a function for example...

28 January 2015 3,031 10 View

How can I calculate some properties of a phase change material?

The properties include internal energy and entropy. The melting process doesn't happen at constant temperature. Heating and freezing curves that are measured by DSC are also available.

04 November 2014 8,637 11 View

What does 2 dimensional analysis mean?

Is it right when two dimension of a 3 dimensional analysis is chosen? Does it always mean the gradient of variation in the omitted dimension is negligible in comparison to other criterion that may...

26 October 2014 6,305 5 View

What is the first step in developing a modular code?

The goal is to produce a program like Aspen or Hysis but so simple that it includes just small number of materials and and components.

25 September 2014 9,064 2 View

Does anyone have knowledge on the two absorption cycles?

Why in papers, for refrigeration, in generator, both heating and separation take place, but in Kalina cycle, evaporator is apart from the separator?

19 August 2014 9,674 3 View

What is aluminium and its oxide electrical properties?

I have heard aluminium forms a thin layer of AL2O3 on its surface. Is it electrically conductive? How much? For example if I put a sheet of aluminium under ground can it transfer the electricity...

01 August 2014 7,459 9 View

Which fluid package in Hysys is the best for water-ammonia mixture?

Although exact data are available in EES, some tried packages show considerable deviation. Which package is appropriate, or how can I have more precise results using the exact solution in the...

30 July 2014 5,724 8 View

Does anyone know if it is logical to use a low pressure outlet of a steam turbine at an inlet of the turbine with an ejector?

Does it improve or decrease the cycle efficiency?

16 July 2014 8,343 3 View

For what kind of plants is exergy-pinch analysis informative?

For example a power plant for a refrigeration cycle, is the study helpful? why?

13 July 2014 4,050 7 View

How can I implement pinch and exergy-pinch on plant including water-ammonia as working fluid?

The challenge is that when the mixture evaporates and condensates, temperature variation isn't linear versus heat gain so the conventional pinch analysis is problematic to be used. Please...

13 July 2014 2,816 0 View