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Thank you all for your help. I know now a lot of ways to determine the pressure of propane. About Antoine equation i am trying to find out those constants on the web without any good result. There is also wagner equation that I will try to figure out how it works.

This very good idea. I guess I can do that with other physical properties like viscosity? Thank you.

Is there an equation from where I can calculate the pressure of propane inside a tank if I know the temperature of the liquid? This pressure is constant, when the vapour and liquid phase come in equilibrium.

You are actually right montemayor. I talk about propane/butane mixture (this mixture varies, it usually is 80%propane 20%butane and is called propane, but when it is 20%propane and 80%butane it is called butane). These are the two typical products that LPG storage facilities handle. For each...

Thank you for your help, I have a LPG manual that has a way to determine propane vaporization capacity. It says if D outside diameter L overall length in inches of the storage tank and K a constant for percent volume of liquid in container then e.g. when 60 percent of liquid is in the storage...

Hi, I am trying to find out a way to calculate the rate of vaporization of butane/propane inside a storage tank at various temperatures. Can you please help me? Happy new year

Hello, merry christmas to all. We have a pressure vessel, spherical tank for the storage of LPG. I am trying to find out any codes/standards that will guide me through this procedure. This tank is already calibrated by a strapping method. The first way was to measure a vertical and horizontal...

Thank you Montemayor. While calculating the friction losses what should I consider as a max speed of LPG in a pipe. Specifically are there any limitations on the speed of LPG at liquid and at gas state? How can I find the Technical Paper No. 410 free? Thank you for your precious time Happy...

I am trying to calculate friction losses in a pipe in order to find out what size of pump I will need. LPG in a liquid state is transfered through this pipe. For this case am I supposed to assume the LPG liquid as an incompressible fluid and use the moody diagram? At the end consumers where...

Thank you for this info. I can understand now what is the difference between air and liquid. I will look for the mollier diagram

Can I use moody diagram for compressed air or there is some other mathematical simulation for this case? I want to calculate basically friction loses inside compressed air pipeline. Thanks in advance.

Hello, I have an air compressor Radaelli. And I am looking for the company Radaelli on the web so that i can find a phone number in order to get my compressor fixed. But I cannot find a webpage of Radaelli neither a phone number. Can someone please tell me where I can find Radaelli? The type...

Can someone please tell me which is the API standard for the design of LPG tanks?

Hello. I am trying to find autocad libraries for free. Any kind would be useful. I use Autocad 2005. THanks in advance

Hi to all, I am looking for physical properties of heavy fuel oil at various temperatures. Are there any websites that I can get this info from? Or any other reference that could help me. I basically want to calculate heat losses from a storage tank. In order to do that I need to calculate...

Hi athomas236, thank you very much for this information. Could you please tell me where I can find this info? I searched ASTM I only found ASTM C680 with a title STANDARD PRACTICE FOR ESTIMATE OF THE HEAT GAIN OR LOSS AND THE SURFACE TEMPERATURES OF INSULATED FLAT, CYLINDRICAL, AND...

Hi to all, I am trying to calculate the heat transfer coefficient for different fluids on various surfaces. I would really appreciate if you could give me any information around this subject. Also a program would be more suitable. Mostly I am interested in calculating heat transfer...

Thanks lilliput1 for this info. Where can I find the International Mechanical Code? Or the power plant engineering textbook?

Hello to all, I am trying to find required chimney cross section for a 47kW power central heating system. I have used until know the following equations: from DIN 4705 Redtenbacher that gives me a 0.037 square metres Another one is Plewa and it gives me 0.03 square metres and a last one from...

it was my mistake I was using e in mm instead of m thank you