Tuesday, November 1, 2011
Hydrotest Pressure Vs Design Pressure.
So if the design pressure is 100 KPa(g), the hydrotest pressure would be 130 KPa(g). Therefore the rule (or requirement) is called 10/13 rule.
Maximum allowable Working pressure (MAWP) Vs Design pressure
Maximum allowable working pressure is always greater than or equal to design pressure.
Sunday, September 25, 2011
SWPF - Acronym
Thursday, September 22, 2011
Cooling water tube velocity in coolers
Wednesday, September 21, 2011
Is it better to put new tires on the front or back?
Tuesday, September 20, 2011
What is FLA for a motor
FLA is the nameplate amperage rating of the motor when it is running at its designed horsepower and on the motors designed voltage. 746 watts = 1 HP. The FLA of a 1 HP motor at 240 volts would be W = amps x volts, Amps = Watts/Voltage. 746/240 = 3.1 amps full load. Overload the motor and the amps go higher, motor running at no load amps are lower than FLA
Thursday, July 28, 2011
Action of flow controllers, temperature controllers, level controllers and pressure controllers.
For level and pressure controllers where outlet flow is controlled, the controller OP will increase with increasing PV.
- For fail safe close valves (Air to open) like level controllers, the controller is direct acting
- For fail safe open valves (Air to close) like pressure controllers, the controller is reverse acting
- For fail safe close valves (Air to open) like level controllers, the controller is reverse acting
- For fail safe open valves (Air to close) like pressure controllers, the controller is direct acting
- For fail safe close valves (Air to open) like level controllers, the controller is reverse acting
- For fail safe open valves (Air to close) like pressure controllers, the controller is direct acting
Wednesday, July 27, 2011
Free North American calls and incoming calls on your Android phone.
- a google voice account
- IPKall number (will explain how to get it)
- a SIP provider (will explain how to get it).
- GVcallback app
- First get a SIP provider. Some of the suggestions are http://sip2sip.info/ and http://sip.antisip.com/account/register.php. Both are free, but I have not used it. What I used is voipraider, but may need to spend $5 to get the connection activated (you can use the $5 to make calls thru out the world).
- Download CSIPSimple and register the SIP account created the above step. Make sure that the SIP registration in CSIPsimple is successful and active (the account will show as green and will show in the notification area of Android).
- Now create an account using IPKall. Provide the SIP information from step 1 and you will be given a free US number. (What IPKall does is forwarding calls to the number (free US number) to the SIP account. If the SIP account is online (in Android), you will get the call. This way you can get free incoming calls on your Android.)
- In the google voice webpage, add the IPKall number from step 3 (Tip: If Google voice does not allow you to enter the IPKall number because it's already used, create a new IPKall number). Install GVcallback app on your Android and select the number just added as the number for call back.
I am writing about this method so that you know such an option exist. It is your responsibility to understand the terms and conditions set forth by your phone company/google.
Thursday, July 21, 2011
How to get and put cell values to excel sheet using macros?
=========================================================================
Count = 0
For i = 1 To 15
date_1 = ActiveSheet.Cells(1, 8 + Count).Value
dilbit = ActiveSheet.Cells(4, 6 + Count).Value
lago = ActiveSheet.Cells(17, 6 + Count).Value
percentag = ActiveSheet.Cells(29, 10 + Count).Value
ActiveSheet.Cells(i + 36, 1).Value = date_1
ActiveSheet.Cells(i + 36, 2).Value = dilbit
ActiveSheet.Cells(i + 36, 3).Value = lago
ActiveSheet.Cells(i + 36, 4).Value = percentag
Count = Count + 7
Next
Thursday, July 14, 2011
Installing CyanogenMod 7 (mil version) ROM on Koodo LG optimus One Android phone (P500h)
Download cyanogen_thunderg-ota-eng.mil-6.5.4.zip into your microSD card. CyanogenMod 7 ROM is based on Gingerbread. Install ROM Manager on your phone. Open ROM Manager and select Install ROM from SD card. Now browse to the downloaded cyanogen zip and tap it.
In the menu, check backup existing ROM (if you want to back up the current OS, highly recommended). Check the options to wipe data/cache and dalvik cache. Now Tap OK. The phone will restart and backup the files and then proceed to CM7 installation.
The phone will automatically restart after the installation (takes about 5-10 min). You will see a brand new OS on your phone. Go to settings and add your google account to synchronize contacts, mails etc.
If you want any other google applications which are not already installed with CyanogenMod 7, follow these instructions.
The same procedure can be used for installing any other android ROMs.
ALL CREDITS TO ORIGINAL DEVELOPERS.
Install google apps on your new Android OS.
In the menu, check backup existing ROM (if you want to back up the current OS, not required in this case for installing google apps). Uncheck the options to wipe data/cache and dalvik cache. Now Tap OK. The phone will restart and backup the files and then proceed to gapps installation.
ALL CREDITS TO ORIGINAL DEVELOPERS.
Wednesday, July 13, 2011
Rooting Koodo LG optimus One Android phone (P500h)
Do not use z4root to root this phone (many people suggested to use this, but didn't work for me at all). The process takes forever without any result.
Download GingerBreak-v1.20.apk (google it, I am sure you will find it). In the application settings, allow installation of non-market applications and enable "USB debugging" in Application settings>Development. Once you install the apk, you will be able to do a "Permanent root" without any fuss.
Please leave a comment, if you have success with any other methods.
If you want to go ahead and install a new ROM (for eg cyanogenMOD 7) instructions are here.
Sunday, June 26, 2011
File explorer for LG Optimus one (Android)
Thursday, June 23, 2011
Disassembling the LG P500 Optimus One
Thursday, June 16, 2011
Screen fit in Sharp aquos LC-60E78UN.
Tuesday, June 14, 2011
Change font size of text using Acrobat Professional.
Media player for LG Optimus One
Note: Make sure your video file does not have AC3 audio. mp3 and AAC audio work fine.
Saturday, June 4, 2011
How to get 5.1 surround sound from AAC file using spdif?
Friday, June 3, 2011
Koodo Tab
Sunday, May 29, 2011
How to force VLC to use S/PDIF.
Saturday, May 28, 2011
AC3filter Dolby AC3 passthrough
Tuesday, May 10, 2011
Turn PC into a DLNA server
Monday, April 25, 2011
How to get info regarding hardware details
Wednesday, April 20, 2011
reverse and direct acting controllers
- If an increase in the process variable (increase in devation from setpoint) results in an increase in output (Electric signal or Instrument air flow) , the controller is direct acting.
- If an increase in the process variable results in a decrease in output, the controller is reverse acting.
So we can conclude,
- If the PV is increased and the air to controller is also increased, then the controller is direct acting.
- If the PV is increased and the air to controller is decreased, then the controller is reverse acting.
Wednesday, April 13, 2011
Tuesday, April 12, 2011
Can firefox sync chrome bookmarks
Monday, April 11, 2011
Microsoft Excel yes no drop down list
Thursday, April 7, 2011
Flare back pressure definitions
Superimposed back pressure - variable: This is the pressure in the flare header due to the flow from other PSVs into the flare header. For an atmospheric discharge it would be 0 psig.
The static pressure that exists at the outlet of a pressure relief device at the time the device is required to operate.
Superimposed backpressure is the result of pressure in the discharge system coming from other sources and may be
constant or variable.
The pressure that exists at the outlet of a pressure relief device as a result of the pressure in the discharge system.
Backpressure is the sum of the superimposed and built-up backpressures.
Or it is the sum of total variable backpressure (superimposed variable + built up) and constant backpressure.
Tuesday, April 5, 2011
Low NOX burners
- Staged fuel combustion
- Fuel gas recirculation
- Lean premix combustion
- Air flow pattern
Is furnace arch / bridge wall temperature a function of fuel gas composition?
Thursday, March 31, 2011
Furnace bridge wall
Tuesday, March 29, 2011
Cold Differential Test Pressure - CDTP
Monday, March 21, 2011
2xAA to D-Size Cell Battery adapter / converter
Wednesday, March 16, 2011
Permissive, interlock - Difference
Tuesday, March 15, 2011
Will blackberry use wifi over 3G
2. Go back>general properties>and set it to hotspot broswer.
Thursday, March 3, 2011
Hot bolting
The criteria typically followed is something like:
• The operating pressure must be less than 75% of the MAWP as allowed under ANSI B16.5 at the operating temp of the piping or process system to be hot bolted.
• The flange must have a minimum of 8 bolts
• The process temperature must be between 4°and 71° C.
• All flanges and associated system equipment must be adequately supported, i.e. no excessive vibration or pulsation.
Monitoring for hydrocarbons is also a must during the operation. Generally the procedure for hot bolting is the same sequence as for a tightening operation.
• The gasket area must not show signs of leakage. Piping, flanges, and bolts must not be severely corroded, i.e., to the point of affecting their integrity.
• Existing flange bolts/nuts must be tight and of the correct size and grade.
Tuesday, March 1, 2011
Side to side baffle trays
Monday, February 21, 2011
Single fired and double fired furnaces.
How to put multiply symbol.
Sunday, February 6, 2011
Micro USB PC Data Sync Cable for Blackberry
Saturday, February 5, 2011
I was going to buy Denon AVR-791 AV receiver
Onkyo HT-RC260 7.2 Channel Home Theater Receiver for US$298
Friday, February 4, 2011
Panasonic DMC-ZS7A 12.1 MP Digital Camera
Newegg.ca - Panasonic DMC-ZS7A Blue 12.1 MP 3.0" TFT(460K), AR Coating LCD 12X Optical Zoom 25mm Wide Angle Digital Camera: "Panasonic DMC-ZS7A Blue 12.1 MP 3.0' TFT(460K), AR Coating LCD 12X Optical Zoom 25mm Wide Angle Digital Camera" for $231 tax + shipping in.
Thursday, February 3, 2011
Patriot Box Office Network Media Player
Wednesday, February 2, 2011
Tummy time for babies.
Breather pipe - Tank design
Well, My boss told me that the design is governed by API 2000. I tried to read it, but it's no fun. So I downloaded a spreadsheet, which does all the calculations. It calculates the breather valve diameter, based on the limiting case, I think fire case is the limiting case. API 2000 has some correlations for different cases. I found that the current diameter for the breather pipe is sufficient.
A good resource
http://www.cheresources.com/invision/topic/7327-tank-vent-sizing/
Spreadsheet calculations (credit to original author) here
Equations for normal venting, which should help:
Inbreathing:
If tank capacity <= 3500 m3
Total Inbreathing = Pumpout + 0.178*tank capacity (m3)
If tank capacity >3500 m3
Total Inbreathing = Pumpout + 3.2*(tank capacity (m3))0.651
Outbreathing:
Liquids with flashpoint >37.8 deg C or NBP above 149 deg C
If tank capacity <= 3500 m3
Total Outbreathing = 1.069*Pump-in + 0.107*Tank Capacity(m3)
If tank capacity > 3500 m3
Total Outbreathing = 1.069*Pump-in + 1.92*(Tank Capacity(m3))0.651
Liquids with flashpoint <37.8>
If tank capacity <= 3500 m3
Total Outbreathing = 2.138*Pump-in + 0.178*Tank Capacity(m3)
If tank capacity > 3500 m3
Total Outbreathing = 2.138*Pump-in + 3.2*(Tank Capacity(m3))0.651
Note: The Pumpout and Pump-in are given in m3/h.
Vent to be sized for the maximum of the inbreathing or outbreathing rate.
(All credits to ankur2061)
Dongle for my future WDTV
Rosewill RNX-EasyN1 IEEE Wireless N USB 2.0 Dongle $9.99 + Free Ship
Panasonic HDC-SD600K: Wish I had an AmeriFriend who could buy this for me
Official Google Blog: Microsoft’s Bing uses Google search results—and denies it
Friday, January 28, 2011
Linksys PAP2 Caller ID / Call display troubleshooting
Update: I recently upgraded my internet connection to telus high speed 25 mbps connection. They provided a new modem/router ( V1000H ). Now my caller ID again stopped working. This time around I had to change the Caller ID method to ETSI FSK WITH PR (UK). Caller ID FSK standard is still bell 202.
Saturday, January 22, 2011
Locate32 for fast search.
- name it the way you will remember
- add synonym in the names (like "list of mp3.doc" will be names as "list of mp3 mp3s music tracks.doc) - So even if you forget mp3, you can get the result by searching music as well.
Bye to Samsung Jack after 2 years.
I got it and tested for some time. That was my first smart phone. I installed some apps like CorePlayer. I installed Garmin mobile, it was a huge learning experience installing something like that. I used it as my first GPS. Getting the satellite takes painfully long, but once there, it will serve you nicely. We roamed around the whole of Ottawa, Montreal, Quebec City with that GPS. It served my nicely. My wife always disliked the Jack because it lacked those aesthetics to attract females. And I always used to poke here saying that her Nokia N70 is not smart enough :). Actually it's a really nice looking phone.