3:11 entry length 3:56 friction factor 4:45 Reynolds Number 5:37 theoretical friction factor 8:09 minor loss 8:38 head loss 12:03 uncertainty 14:45 graphs 16:55 Abbitt
The cold fluid certainly is not water, because it has phase transition between Tci and Tco, so Cp(Tav) can not be an approximate value. If it is assumed as water, taking the phase change into account, q=h(Tco)-h(Tci)=7195 kW, not 998.4kW!. What are the cold and hot fluids? It would be much more beneficial if you provide this information
I believe that the diameter used in the calculation of the Shell side Reynolds number should not be the same as the tube diameter (19 mm). The diameter should be, D = Aeff / Perimeter. Aeff is the area of the inside shell minus the area of the tubes, and Perimeter will be πDs( Ds is the inside diameter of the shell)
Are these equations applicable for shell & tube condenser? For example, tube side is water, Shell side is R22 refrigerant, water entering tube is at 32 oC and leaving is 37 oC, Hot gas entering shell is at 80 oC and condenses to liquid at 35 oC. It would be great if you could answer my query sir. My email id kalsi@ecodivinesolutions.com
Hi, thanks for the explanation and clarification Can a doctor send this lecture on paper in the form of a PDF file. He needs the design calculations for this device, especially the mass and energy balance, and calculations for choosing the design filler. I would be grateful for you. Can you write to me on this email? alaahmel2@gmail.com
Very useful.Thank you very much Sir. Please let me know about your e mail addresses so that I could communicate with you in case of a practical design which I expect to do .
No... You can't use it..... Because currently used psychometric chart is for air at 1 atm pressure.... You can't use it to evaluate air properties at an elevated altitude due to pressure less than 1 atm
Hi, i need to design Heat exchanger for my project. The hot stream temperature is 75 and 25 for inlet and outlet respectively. heat duty is 4.018 kW. now i'm planning to use water to cool down the substance. But i don't have any info on its properties. I've read that maybe 21-22 deg C is an ideal for the inlet. but i can't determine the outlet because i don't have the flowrate of the water. so how am i supposed to determine the flowrate or the outlet temperature? Please help, i'm stuck because i can't even calculate the LMTD
Sounds like you are using water, cooling water. Generally cooling water. Temperature rise is limited to 115 degrees F. This prevents salts from dropping out. Consult Kern if available.
