Monday, June 25, 2012

How to Convert Magnet links into Torrent Files for Dropbox

Some of the torrent sites like Piratebay are now offering only magnet links. If you would like to start downloading remotely using dropbox, the magnet links won't work. To remote start downloading, you need the actual .torrent file.


Steps to follow:


  1. Click the magnet link. Your default torrent client (for example utorrent) will start. Press OK.
  2. After the download has started, go to %appdata%\uTorrent\ using Windows Run command (for other clients look for appropriate folder in  %appdata%.)
  3. You will see the .torrent file there (if the .torrent file is not there, it means the torrent downloading has not yet started - wait for couple of minutes. Once the download is started, the .torrent file will show up).
Now you have the .torrent file to email or copy to Dropbox.


Option 2: You can try to use http://magnet2torrent.me. However, it may not work all the time. It may work, if your torrent is a popular one.

Thursday, June 21, 2012

Calculation of Vapor Pressure using HYSYS.

1. Create the stream with required composition.
2. Enter the desired temperature in the stream properties.
3. Set the vapor fraction to 0.

Pressure calculated by HYSYS will be the vapor pressure of that stream. Note that HYSYS is actually calculating the bubble pressure when vapor fr is set to 0. But bubble pressure is the vapor pressure at the specified temperature (good for any temperatures below critical temperature).




Note that vapour pressure greater than operating pressure (for a multicomponent mixtures) just means that the liquid is flashing (Vapor-liquid mixture).


To keep a liquid phase the operating pressure of a two phase stream is usually greater than the liquid vapour pressure. Otherwise the liquid would flash so that the vapour pressure of the new liquid is below the operating pressure. This means for a two phase multicomponent mixture flow, the vapour pressure of liquid at operating temperature (not entire mixture) is equal to the operating pressure.