Re: Steam Moisture Content

A throttling calorimeter is easy to make from ordinary pipe fittings, and there are countless illustrations in any number of old engineering books. If you don't have one I will send a picture, please inform me of the format you use (.jpg, .bmp, etc.). My e-mail is <a href="/group/PipingDesign/post?postID=QjC_yvtU70cH2zbHUsUIm6zGJsSzlWEfHgrFWbFd2bMPUyTMDvYM3txYzv_meny_9g68lmWeOUirtg">rossef1@asme.org</a>

Two problems with throttling calorimeters; a, Getting a good representative steam sample is difficult. If velocity is low there can be significant separation of steam and water, and your sample tube may get the "more dry" sample, or a "more wet" sample to measure.

b, The useful range for this device is limited to steam with moderate quantities of moisture. Examine a Mollier chart to see the useful range of this device.

[Non-text portions of this message have been removed] Received on Fri Sep 21 19:06:00 2001