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I meant that the HCL gas should get out of the industry and somehow neutralized, not get out in the air !

I mean area. I don't care about the volume.

I use the extrude command to make a solid out of a 4 side polygon. How can i calculate the area of the solid is created ? Also, I want to calculate the area of a 90 degrees curve of a circle duct. How ? Please, help me. I don't want to get confused with elevation geometry etc. Thank you...

The industry is about to take ISO 14000 So I need to find out what filter should i use and what fan to get HCL gas out of the building.

In an industry that produces PVC tubes i want to suck the HCL gas that is produced near the machines away from the building. Now thw industry uses two big fans on the roof sucking the air (and the HCL gas) of the room out of the building but this is not enough. Do i have to use plastic fins...

Thanks for answering. The problem is that i don't know enough. :) I am searching in a dark room! If anyone can provide more data please do.

I have to use steam to pasteurize meat (red as beef or white as chicken). I know the mass of the meat. How can i calculate the flow of the steam (kg/sec) ? What kind of steam generator do i have to use ? Is there any book out there about practical problems in food industry ? Thank you, Nektarios

I have to use steam to pasteurize meat (red as beef or white as chicken). I know the mass of the meat. How can i calculate the flow of the steam (kg/sec) ? What kind of steam generator do i have to use ? Is there any book out there about practical problems in food industry ? Thank you, Nektarios

I visited the web site of nist but couldn't find anything. Please, help me find the spot!

I want to find a table of the following properties for R134 (saturated liquid) as a function of Temperature. density [kg/m3] heat capacity [J/kg K] viscosity [m2/sec] thermal conductivity [W / m K] thermal diffusivity [m2/sec] Prandtl number volumetric thermal expansion [1/K] Book , web...