thePetroStreet

Guys,

This is the latest field of renewable energy production. PRO or Pressure Retarded Osmosis, is an interesting application. Although, the technology is only at its intital stages of development. Please see attachment, from Power Mag Feb 2010 edition

regards,

Ali,

There are no standards for choosing a VFD for a specific wattage of motor to be operated. Normally different companies have different design practices to incorporate safety margins (usually more than 1.1 times motor rating) when sizing / selecting a VFD. Factors such as motor rating, voltage ...

Ali,

For a 56 kW only motor on non-continuous service (surely operation will be less than 2000 hrs / year), why do we need a VFD ? Have an enquiry with the vendor because you may not be needing this and it will reduce cost as well as space in area/switchgear.
In case there is a very specific reason ...

Dear Usman,

Blowdown is "the difference between set pressure and re-seating pressure of a PSV expressed as a percentage of set pressure (or sometimes in pressure units)". Ideally a PSV should always pop-up at Set Point to release pressure and similarly it should always reseat (close) at Set Point ...

dear dani,

Kindly provide explicit details about the trouble you want to troubleshoot. After having a good insight of the issue, forum members can give you better guidance,
regards

For ITB / contract purposes, you should ask vendors to provide the GT performance test procedures. Which you can compare with PTC 22 for adequacy. Normally there is no difference for aero-derative turbines.

When requesting a proposal you should ask the vendor to supply detailed specifications of ...

Tosif,

PTC-22 provides the guidlines for performance test of gas turbines, and most vendors refer to it while preparing there own performance test procedures. However, based on the guidelines, every vendor advise somewhat different procedures. It includes criteria for stability prior to start of ...

thanks ibrahim,

details regarding gatecycle is available with at GE website, however, i could not find any link for downloading the trial version.
please send me the web link.

thanks again.

What is the effect of power factor on Performance of the gas turbine, i am looking for some correlation / graph (especially for GE frame 5 turbine), thru which correction of actual load to design load could be carried out ? for performance evaluation.

??

regards,

What is the effect of power factor on Performance of the gas turbine, i am looking for some correlation / graph (especially for GE frame 5 turbine), thru which correction of actual load to design load could be carried out ? for performance evaluation.

??

regards,