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Dear friends , What are the guidelines for performance of shell and tube type heat exchanger. Thanks "Knowledge is power"

Hi friends! I am a mechanical engineer, but I need to know the isolation between primary and secondary and secondary to ground for a 150 KV type isolation transformer. Can anybody suggest where I can find the procerure for this. Is there any ISO guideline for this? Thanks Arun "Knowledge...

Hi, I would like to know what is the general level illumination(in LUX) for an industrial building. Is there any website for this info? Thanks "Knowledge is power"

HI , We are having a pressure vessel( operating pr. 100 psi) whcih has an end cover which is abot 8 feet in dia. There are two grooves on this flange for gasket. Previously we were having rubber gaskets in this grooves. Depth of these grooves is 5 mm. Can one use ePTFE gasket tape for this...

Hello, I would like to know how to select or decide about the crown radius for a torispherical head for a vessel. Is there any relation of this radis to the shell radius for optimum design. In code it is said the knuckle radius dhould be 6 % od the crown radius, but nothing is stated about how...

What does it mean by words SR and PXR on the name plate of a U coded vessel , just below U stamp Thanks "Knowledge is power"

How Titanium -Alumina ceramic joints(by diffusion bonding process) are made. We do not want to use adhesives.Is there any site or any practical data available for this. What should be the temperature, pressure and intermediate material required for this making this joint. "Knowledge is...

Hi friends, I want to select a centrifugal blower for air at 36 atm. pr. The voulmatric flow rate for this application is about 55 cfm and pr. drop in pipe line for this flow rate is about 18". The problem is I don't know how the volumatic flow rate of a particular centrifugal blower changes...

Hi friends, I am posting this question about centrifugal blower because there is good similarity between a centrifugal pump and a centrifugal blower. I want to select a blower for a gas which is about 36 times heavier than air at 1 atm. pr. The voulmatric flow rate for this gas is about 55 cfm...

Hello, (1)I am trying to write a program for serial port communication in Linux. I have created a class in which I initiallize the port parameters using a termios structure and open the port. The class also has a function which can return a FILE pointer(using fdopen) attached with the port. This...

Dear friends, (1)I am having some autocad drawings, from which I want to generate Solid works parts. I want to use the dwg files to make the sketch directly. How it can be done. (2) Is it possible to move a sketch entity in a particular sketch to another sketch. Thanks "Knowledge is...

Hi friends, Need your help badly!!!!!!! I am having windows98 on my home PC(Celeron processor). Recently it started giving problems. Suddenly mouse hangs , then keyboard also hangs. After some time I have to restart the PC. The mouse and keyboard again start working. But same problems repeat...

Hi friends, I want to draw a spline in Autocad.I am having the coordinates of the points( approx. 1000 points), through which spline is to be drawn, in a data file. I want to read the coordinates from the data file and draw the spline. How we can do it using a simple lisp routine or VBA routine...

Hi, I was trying to connect my laptop to my PC using a parallel cable using Direct cable connection. But it does not connect.Laptop is having Windows XP and PC is on Windows 98.Then I tried to connect two PCs using same cable (both PC on Windows 98).Still it didn't work. I want to do it using...

Hi, I want to create an object having a pipe and a flange attached to it. But the flange axis and pipe axis are at an angle. How ot create a mate for this. Also I want to create a TEE joint, but inner surface of my pipe is having a particular contour. If I create a plane at outer surface of the...

Dear friends, I would like to know how to decide about the no. of passes in a shell and tube type heat exchanger. Thanks "Knowledge is power"

Deat Friends, I want to write an application using macros in Excel. But I want to control the no of rows and columns when the worksheet is opened. How it can be achieved using macros "Knowledge is power"

Dear friends, Could anybody suggest me for how much pressure should a metallic bellow be hydrotested for a given designed pressure. Arun "Knowledge is power"

Dear friends, I have windows NT and windows 98 second edition on the same hard disk. Somehow my pc got infected by wyx virus. I tried to remove it with AVG antivirus, but was not successful. Then I booted from a clean disk and transferred the system to c:. Then onwards, my pc does not give an...

Hi! Is there any way to control the no. or rows and columns in a Excel worksheet? "Knowledge is power"