29 December 2011

Processbook PDI file showing messy data after PI Server Migration

By default, Processbook use pointid to get data from PI server instead of tagname.

When u have new PI server with same tagname but with different pointid, all your PDI files will give messy value.. so to fix that, simply edit your Procbook.ini file (using Notepad), and find this parameter...

PB2TagResolution=1

By default, the value is "0".. So change it to "1"..  Restart Processbook.. voila..


Where Procbook.ini is located?

Easy.. do this in the Command Prompt..

23 December 2011

American Gas Association Report No. 8 (AGA8) application for GB3 Metering Project


For GB3 Metering Project, AGA8 refers to "AGA8-DC92" mentioned below.

The AGA8-DC92 (ISO 12213) standard is used to calculate the following:

a) Compressibility factor at Base conditions
b) Compressibility factor at Line conditions
c) Density at Line conditions
d) PTZ correction factor, (C)

Calculation inputs are as below:

a) Natural gas from the 10 gas component (output of the Encal 3000 Gas Chromatograph)
b) Base Pressure and Temperature
c) Line Pressure and Temperature.

The method of AGA8_DC92 in accordance of ISO 12213.

The module calculates also PTZ correction factor, C from which you can make further calculations:

- PTZ density, Volume and Total energy of gas

Reference:

http://www.gammadigital.hu/smart/html2/ENG/modules/aga8iso12213.html

20 December 2011

Technical Papers for Power Plant Performance Engineers

Performance Engineers out there.. check this out.. wonderful place..

http://famos.scientech.us/Technical_Papers.html

The papers are categorized in 12 different sections..

1. Turbine Cycle Performance Analysis
2. Performance Testing
3. Operations and Economics
4. Fossil Boilers and Nuclear Steam Generators
5. Combined Cycles, Cogeneration, and Gas Turbine Cycles
6. Steam Turbines
7. Feedwater Heaters
8. Condensers and Cooling Towers
9. Feed Pumps and Feed Pump Turbines
10. Fuel Studies
11. Computer Applications
12. Performance Monitoring