Recent content by jeewana

Thanks for the reply. It helped me to get some idea. Jeewana

Thanks for the reply. Yes, As you said this should be calculated since the percentages of its content varies. However I was expecting some typical values for a design. Thanks again.

Can anyone help me to find the the thermal properties (Density,Heat capacity,viscosity,thermal conductivity) of WHITE LIQUOR used in pulp industry? [WHITE LIQUOR is a mixture of NaOH,Na2S,Na2CO3.]

Hi, Anyone knows how to place the DERESONATING BAFFLES in a Shell and Tube heat Exchanger? How does it look likes?

Thanks for the reply. In fact I shall start another thread as you said. Deresonating baffle is used to avoid flow induced vibration(acoustic). Thermal design is being done as per TEMA. According to my understanding it is a longitudinal baffle which is parallel to flow.

Hi, Anyone knows how to place the DE RESONATING BAFFLES in a Shell and Tube Heat Exchanger? How does it look likes?

You are correct. Well and clear enough. Thank You

For Pressure vessels/ Heat Exchangers ,shall design pressure be in absolute pressure or in gauge pressure?

Hi Thank you for the reply. In fact I don't want to go that deep. Even a thumb rule will do. Any way I will look into this, Thank you again

Does anyone know how to estimate the tube sheet thickness for SQUARE TYPE tube sheets ?(like in fin tube Air coolers). Where can i find those calculations? as i know TEMA /ASME give only for circular types.

======== HI thank you so much for the comprehensive reply. My understanding is, with basics we can prove the equation PR/S=t However 0.6p or 0.4p has been added to the denominator of this equation due to some reason. Obsequiously now this is a semi empirical equation. As the...

hi Can anyone explain the following. when we say t = PR /(SE + 0.4P), the term 0.4P is a correction factor for the stress non linearity with the vessel thickness. Is that so? Since S = Sy/1.5 , all the vessels we design have the same factor of safety which is 1.5. Please correct me if...