2. What are the merits and demerits of orifice and control valve ?
Edited by PENGG, 02 January 2013 - 08:25 AM.
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Posted 02 January 2013 - 08:20 AM
Edited by PENGG, 02 January 2013 - 08:25 AM.
Posted 03 January 2013 - 05:34 AM
Posted 04 January 2013 - 03:19 AM
Edited by S.AHMAD, 04 January 2013 - 03:21 AM.
Posted 09 January 2013 - 08:13 AM
1. What are the criteria to decide whether to provide orifice or control valve in minimum recirculation line ?
You need to determine the breakeven point. Past study showed that the breakeven point is around 50 HP. If the pump is smaller than 50 HP, orifice is cheaper long term cost otherwise better to install control valve.
2. What are the merits and demerits of orifice and control valve ?
Orifice plate is cheaper investment cost but need extra energy for pumping since we need to add the minimum recirculation rate to the design rate. Control valve is more expensive investment but there is energy saving. Therefore there is an optimum (breakeven) point that you need to determine.
Posted 09 January 2013 - 10:30 AM
Edited by kkala, 10 January 2013 - 04:16 AM.
Posted 09 January 2013 - 07:35 PM
Edited by S.AHMAD, 09 January 2013 - 07:42 PM.
Posted 10 January 2013 - 01:37 AM
So as per that even for 33 HP motor pump control valve is better option.
Edited by fallah, 10 January 2013 - 01:37 AM.
Posted 10 January 2013 - 04:36 AM
Edited by kkala, 10 January 2013 - 04:56 AM.
Posted 11 January 2013 - 04:29 AM
Posted 23 April 2014 - 01:49 AM
what is break even point? and how to determine that
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