ASTM on Data Normalisation - Revision history

Matt at 06:11, 2 December 2024

2024-12-02T06:11:57Z

← Older revision		Revision as of 16:11, 2 December 2024
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	=== Normalised differential pressure===		=== Normalised differential pressure===
	<math>		<math>
	\text {Normalised} \~~hspace {2mm}~~ \Delta P=\Delta P\left [ \frac{\left ( \text {Standard feed/brine flow} \right )^{1.5}}{\left (\text {Actual feed/brine flow} \right )^{1.5}} \right ]\left [\left ( T-25 \right )\left ( 0.017 \right ) +1 \right ]		\text {Normalised}\ \Delta P=\Delta P\left [ \frac{\left ( \text {Standard feed/brine flow} \right )^{1.5}}{\left (\text {Actual feed/brine flow} \right )^{1.5}} \right ]\left [\left ( T-25 \right )\left ( 0.017 \right ) +1 \right ]
	</math>		</math>
	<p>		<p>

imported>WikiAdmin: /* Normalised differential pressure */

2014-09-16T13:45:38Z

Normalised differential pressure

← Older revision		Revision as of 23:45, 16 September 2014
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	\text {Normalised} \hspace {2mm} \Delta P=\Delta P\left [ \frac{\left ( \text {Standard feed/brine flow} \right )^{1.5}}{\left (\text {Actual feed/brine flow} \right )^{1.5}} \right ]\left [\left ( T-25 \right )\left ( 0.017 \right ) +1 \right ]		\text {Normalised} \hspace {2mm} \Delta P=\Delta P\left [ \frac{\left ( \text {Standard feed/brine flow} \right )^{1.5}}{\left (\text {Actual feed/brine flow} \right )^{1.5}} \right ]\left [\left ( T-25 \right )\left ( 0.017 \right ) +1 \right ]
	</math>		</math>
			<p>
			<math>
			\text {Feed/brine flow}=\frac{\left ( \text {Feed flow} + \text {Concentrate flow} \right )}{2}
			</math>
			</p>

	==Calculators/spreadsheets==		==Calculators/spreadsheets==

imported>WikiAdmin: /* Feed/brine channel blockage/fouling - normalised differential pressure */

2014-09-16T13:40:59Z

Feed/brine channel blockage/fouling - normalised differential pressure

← Older revision		Revision as of 23:40, 16 September 2014
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	</math>		</math>

	==Feed/brine channel blockage/fouling ~~- normalised~~ differential pressure==		==Feed/brine channel blockage/fouling==

			=== Normalised differential pressure===
			<math>
			\text {Normalised} \hspace {2mm} \Delta P=\Delta P\left [ \frac{\left ( \text {Standard feed/brine flow} \right )^{1.5}}{\left (\text {Actual feed/brine flow} \right )^{1.5}} \right ]\left [\left ( T-25 \right )\left ( 0.017 \right ) +1 \right ]
			</math>

	==Calculators/spreadsheets==		==Calculators/spreadsheets==

imported>WikiAdmin: /* Normalised Permeate Conductivity */

2014-09-16T09:42:33Z

Normalised Permeate Conductivity

← Older revision		Revision as of 19:42, 16 September 2014
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	===Normalised Permeate Conductivity===		===Normalised Permeate Conductivity===
			<math>
			\text {Normalised permeate conductivity} = \text {Permeate conductivity}\left ( \frac{\text {Actual permeate flow}}{\text {Standard permeate flow}} \right )\left ( \frac{\text {Standard feed/brine conductivity}}{\text {Actual feed/brine conductivity}} \right )\left ( TCF \right )
			</math>

	==Feed/brine channel blockage/fouling - normalised differential pressure==		==Feed/brine channel blockage/fouling - normalised differential pressure==

imported>WikiAdmin: /* Membrane rejection - normalised salt rejection, normalised permeate conductivity */

2014-09-16T09:39:58Z

Membrane rejection - normalised salt rejection, normalised permeate conductivity

← Older revision		Revision as of 19:39, 16 September 2014
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	</p>		</p>

	==Membrane rejection ~~- normalised salt rejection, normalised permeate conductivity~~==		==Membrane rejection

			===Normalised Salt Rejection===

			===Normalised Permeate Conductivity===

	==Feed/brine channel blockage/fouling - normalised differential pressure==		==Feed/brine channel blockage/fouling - normalised differential pressure==

imported>WikiAdmin: /* Membrane rejection - normalised salt rejection, normalised permeate */

2014-09-16T09:35:08Z

Membrane rejection - normalised salt rejection, normalised permeate

← Older revision		Revision as of 19:35, 16 September 2014
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	</p>		</p>

	==Membrane rejection - normalised salt rejection, normalised permeate==		==Membrane rejection - normalised salt rejection, normalised permeate conductivity==

	==Feed/brine channel blockage/fouling - normalised differential pressure==		==Feed/brine channel blockage/fouling - normalised differential pressure==

imported>WikiAdmin: /* Normalised Flow */

2014-09-16T09:27:27Z

Normalised Flow

← Older revision		Revision as of 19:27, 16 September 2014
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	\text {Normalised Permeate Flow} = \frac{\left ( NDPs \right ) \left ( TCFs \right )}{\left ( NDPa \right ) \left ( TCFa \right )} \text {Actual Flow}		\text {Normalised Permeate Flow} = \frac{\left ( NDPs \right ) \left ( TCFs \right )}{\left ( NDPa \right ) \left ( TCFa \right )} \text {Actual Flow}
	</math>		</math>
			<p>
	<math>		<math>
	a = \text {actual}		a = \text {actual}
	</math>		</math>
			<br>
	<math>		<math>
	s = \text {standard}		s = \text {standard}
	</math>		</math>
			</p>

	==Membrane rejection - normalised salt rejection, normalised permeate==		==Membrane rejection - normalised salt rejection, normalised permeate==

imported>WikiAdmin: /* Normalised Flow */

2014-09-16T09:26:54Z

Normalised Flow

← Older revision		Revision as of 19:26, 16 September 2014
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	===Normalised Flow===		===Normalised Flow===
			<math>
			\text {Normalised Permeate Flow} = \frac{\left ( NDPs \right ) \left ( TCFs \right )}{\left ( NDPa \right ) \left ( TCFa \right )} \text {Actual Flow}
			</math>
			<math>
			a = \text {actual}
			</math>
			<math>
			s = \text {standard}
			</math>

	==Membrane rejection - normalised salt rejection, normalised permeate==		==Membrane rejection - normalised salt rejection, normalised permeate==

imported>WikiAdmin at 16:52, 15 September 2014

2014-09-15T16:52:40Z

← Older revision		Revision as of 02:52, 16 September 2014
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	Membrane performance (flux and salt passage) is affected by: water temperature, feed conductivity, and flux rate. If the operating arameters remain constant the system will perform fairly steadily over a long period of time. However, these operating conditions will eventually change. Normalisation is a technique that allows the user to standardise the data to a constant set of conditions (or to a reference), and may be used with SCADA for online diagnostics.		Membrane performance (flux and salt passage) is affected by: water temperature, feed conductivity, and flux rate. If the operating arameters remain constant the system will perform fairly steadily over a long period of time. However, these operating conditions will eventually change. Normalisation is a technique that allows the user to standardise the data to a constant set of conditions (or to a reference), and may be used with SCADA for online diagnostics.

	==Flow or flux performance ~~- specific~~ flux~~, normalised flow~~==		==Flow or flux performance==
			===Specific flux===

	<math>		<math>
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	</p>		</p>

			===Normalised Flow===

	Membrane rejection: normalised salt rejection, normalised permeate		==Membrane rejection - normalised salt rejection, normalised permeate==
	Feed/brine channel blockage/fouling: normalised differential pressure.		==Feed/brine channel blockage/fouling - normalised differential pressure==

	==Calculators/spreadsheets==		==Calculators/spreadsheets==

imported>WikiAdmin at 16:42, 15 September 2014

2014-09-15T16:42:03Z

← Older revision		Revision as of 02:42, 16 September 2014
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	</math>		</math>
	</p>		</p>
			<p>
			<math>
			Y = \text {Recovery} = \frac{\text {Permeate flow}}{\text {Concentrate flow} + \text {Permeate flow}}
			</math>
			</p>


	Membrane rejection: normalised salt rejection, normalised permeate		Membrane rejection: normalised salt rejection, normalised permeate
	Feed/brine channel blockage/fouling: normalised differential pressure.		Feed/brine channel blockage/fouling: normalised differential pressure.