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	<title>Small Hydropower &#38; Micro Hydropower &#187; Hydropower system</title>
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	<link>http://smallhydro.com</link>
	<description>Your Online Small Hydroelectric Power Resource!</description>
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		<title>A Reader Asks: Isn&#8217;t there a Hydro Turbine with Variable Speed?</title>
		<link>http://smallhydro.com/200907/small-micro-hydro/a-reader-asks-isnt-there-a-hydro-turbine-with-variable-speed/</link>
		<comments>http://smallhydro.com/200907/small-micro-hydro/a-reader-asks-isnt-there-a-hydro-turbine-with-variable-speed/#comments</comments>
		<pubDate>Tue, 07 Jul 2009 03:53:09 +0000</pubDate>
		<dc:creator>Jess</dc:creator>
				<category><![CDATA[Hydropower system]]></category>
		<category><![CDATA[Small & Micro Hydro]]></category>
		<category><![CDATA[Water Generators]]></category>
		<category><![CDATA[Water Turbines]]></category>
		<category><![CDATA[Generator frequency]]></category>
		<category><![CDATA[Hydro power generator]]></category>
		<category><![CDATA[Hydro turbine speed]]></category>
		<category><![CDATA[Micro hydro]]></category>
		<category><![CDATA[microhydroelectric]]></category>
		<category><![CDATA[Variable stream flow]]></category>

		<guid isPermaLink="false">http://smallhydro.com/?p=1798</guid>
		<description><![CDATA[There are hydro turbines to solve the variable flow problem, but that is not the same situation as variable speed. The two parameters are related, since an increase in pressure will cause and increase in water turbine shaft speed that in turn will cause a proportinate increase in turbine water flow rate. The problem is that variations in turbine RPM will cause generator output frequency to vary too.
]]></description>
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		<slash:comments>10</slash:comments>
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		<title>Hydro Turbine Size a few Questions and Answers</title>
		<link>http://smallhydro.com/200906/hydropower-system/hydro-turbine-size-a-few-questions-and-answers/</link>
		<comments>http://smallhydro.com/200906/hydropower-system/hydro-turbine-size-a-few-questions-and-answers/#comments</comments>
		<pubDate>Fri, 19 Jun 2009 00:32:00 +0000</pubDate>
		<dc:creator>Jess</dc:creator>
				<category><![CDATA[Hydro civil works]]></category>
		<category><![CDATA[Hydropower system]]></category>
		<category><![CDATA[Hydro system design]]></category>
		<category><![CDATA[Hydro turbine efficiency]]></category>
		<category><![CDATA[Hydropower ROI]]></category>

		<guid isPermaLink="false">http://smallhydro.com/?p=1048</guid>
		<description><![CDATA[Choosing Smaller or larger propeller or water wheels is not the issue. Fluid flow over the hydro generator propulsion device gives rise to rotational motion. Rotor specific speed is the issue you refer to and different designs have higher or lower specific speeds due to the physics involved with that wheels geometry.]]></description>
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		<slash:comments>22</slash:comments>
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		<item>
		<title>Meeting Your Hydro Power Needs &#8211; Step 1 of 12</title>
		<link>http://smallhydro.com/200906/small-micro-hydro/meeting-your-hydro-power-needs/</link>
		<comments>http://smallhydro.com/200906/small-micro-hydro/meeting-your-hydro-power-needs/#comments</comments>
		<pubDate>Wed, 10 Jun 2009 18:57:02 +0000</pubDate>
		<dc:creator>Jess</dc:creator>
				<category><![CDATA[Hydropower planning]]></category>
		<category><![CDATA[Hydropower system]]></category>
		<category><![CDATA[Small & Micro Hydro]]></category>
		<category><![CDATA[Hydro energy needs]]></category>
		<category><![CDATA[Hydro Site Development issues]]></category>
		<category><![CDATA[Hydro site survey]]></category>

		<guid isPermaLink="false">http://smallhydro.com/?p=1010</guid>
		<description><![CDATA[When it comes to hydropower one of the first steps in hydro site evaluation is to perform a site energy survey.  Basically regardless of whether its small or micro hydro the power, a needs survey will help you to tell just how much value there is for the hydro electric energy potential that your site has.]]></description>
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