Functional response - Revision history

128.227.135.69: /* Type II */

2014-11-24T21:32:42Z

Type II

← Older revision		Revision as of 23:32, 24 November 2014
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	~~The '''West number'''~~ is an empirical parameter used to characterize the performance of '''[[Stirling engine]]s''' and other Stirling systems. It is very similar to the [[Beale number]] where a larger number indicates higher performance; however, the West number includes temperature compensation. The West number is often used to approximate of the [[Power (physics)\|power]] output of a Stirling engine. The average value is (0.25) [http://www.~~ornl~~.~~gov/~webworks/cppr/y2001~~/~~rpt~~/~~27113.pdf~~] ~~for a wide variety of engines, although it may range up to (0.35)~~ [http://~~www~~.~~bekkoame~~.ne.jp/~~~khirata~~/~~academic/simple/simplee~~.~~htm], particularly for engines operating with a high [[temperature]] differential.~~		Emilia Shryock is my home [http://www.buzzbit.net/user/AFilson std home test] test kit name but you can contact me something home [http://cs.sch.ac.kr/xe/index.php?document_srl=1203900&mid=Game13 std testing at home] test you like. Puerto Rico is exactly where he and his spouse reside. The [http://www.Huffingtonpost.ca/colette-kenney/dating-with-herpes_b_1609226.html favorite hobby] for my children and me is to perform baseball but I haven't produced a dime with it. For many years he's been working as a meter reader and it's some thing he really appreciate.<br><br>my web blog ... [http://inspirationpedi.com/groups/useful-guidance-for-battling-your-yeast-infection/ inspirationpedi.com]

	~~The West number may be defined as:~~

	~~:<math>W_n~~ = ~~\frac{Wo}{P V f} \frac{(T_H + T_K)}{(T_H - T_K)}~~ = ~~B_n \frac{(T_H + T_K)}{(T_H - T_K)}</math>~~

	~~where:~~
	*'''W<sub>n</sub>''' is the West number
	*'''W<sub>o</sub>''' is the power output of the engine ([[watt]~~]s)~~
	*'''P''' is ~~the~~ [~~[Arithmetic_mean\|mean average]] gas [[pressure]] ([[Pascal (unit)\|Pa]]) or ([[MPa]], if volume is in cm<sup>3<~~/~~sup>)~~
	*'''V''' is swept [[volume]] of the expansion space (m<sup>3</~~sup>) or (cm³, if pressure is in MPa)~~
	*'''f''' is the engine cycle [[frequency]] ([[Hertz\|Hz]])
	*'''T<sub>H</~~sub>''' is the absolute [[temperature]] of the expansion space or [[heater]] ([[kelvin]]s)~~
	*'''T<sub>K</~~sub>''' is the absolute temperature of the compression space or cooler (kelvins)~~
	*'''B<sub>n</sub>''' is the [[Beale number]] for ~~an engine operating between temperatures ''T''<sub>''H''</sub>~~ and ~~''T''<sub>''K''</sub>~~

	~~When the Beale number~~ is ~~known,~~ but ~~the West number is not known, it is possible to calculate~~ it. ~~First calculate the West number at the temperatures~~ '~~'T''<sub>''H''</sub>~~ and '~~'T''~~<~~sub~~>~~''K''~~<~~/sub~~> ~~for which the Beale number is known, and then use the resulting West number to calculate output power for other temperatures~~.

	~~To estimate the power output of a new engine design, nominal values are assumed for the West number, pressure, swept volume and frequency, and the power is calculated as follows:~~

	~~:<math>W_o = W_n P V f \frac{(T_H - T_K)}{(T_H + T_K)} </math> <ref>~~[http://~~www~~.~~ornl.gov/~webworks/cppr/y2001~~/~~rpt~~/~~27113.pdf ornl~~-tm-~~10475<!~~-- ~~Bot generated title~~ --~~>]</ref>~~

	For example, with an absolute temperature ratio of 2, the portion of the equation representing temperature correction equals 1/3. With a temperature ratio of 3, the temperature term is 1/2. This factor accounts for the difference between the West equation, and the Beale equation in which this temperature term is taken as a constant. Thus, the Beale number is typically in the range of 0.10 to 0.15, which is about 1/~~3 to 1/2 the value of the West number~~.

	~~== References ==~~
	~~<references/>~~

	~~==External links==~~
	* [http://www.bekkoame.ne.jp/~khirata/academic/simple/simplee.htm Stirling Engine Performance Calculator]

	~~{{heat engines}}~~

	~~[[Category:Dimensionless numbers]]~~
	~~[[Category:Piston engines]]~~
	~~[[Category:Mechanical engineering]~~]

en>Rebecca.c.tyson: /* Type II */ I cut the original sentence "In an example...kills per wolf." which was long enough to be difficult to read, into two shorter sentences.

2014-01-14T20:42:36Z

Type II: I cut the original sentence "In an example...kills per wolf." which was long enough to be difficult to read, into two shorter sentences.

← Older revision		Revision as of 22:42, 14 January 2014
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	~~Claude~~ is ~~her name~~ and ~~she totally digs that name~~. The ~~thing I adore most bottle tops collecting and now I have time~~ to ~~take on new things~~. ~~Bookkeeping~~ is ~~how he supports his family members and his wage has been really fulfilling~~. ~~My house~~ is ~~now~~ in ~~Kansas~~.<br><br>~~Feel free~~ to ~~surf to my blog~~ - [http://~~Changbai~~.~~newdrycleaning~~.~~com~~/~~photo~~/~~54180~~ http://~~Changbai~~.~~newdrycleaning~~.~~com~~/~~photo~~/~~54180~~]		The '''West number''' is an empirical parameter used to characterize the performance of '''[[Stirling engine]]s''' and other Stirling systems. It is very similar to the [[Beale number]] where a larger number indicates higher performance; however, the West number includes temperature compensation. The West number is often used to approximate of the [[Power (physics)\|power]] output of a Stirling engine. The average value is (0.25) [http://www.ornl.gov/~webworks/cppr/y2001/rpt/27113.pdf] for a wide variety of engines, although it may range up to (0.35) [http://www.bekkoame.ne.jp/~khirata/academic/simple/simplee.htm], particularly for engines operating with a high [[temperature]] differential.

			The West number may be defined as:

			:<math>W_n = \frac{Wo}{P V f} \frac{(T_H + T_K)}{(T_H - T_K)} = B_n \frac{(T_H + T_K)}{(T_H - T_K)}</math>

			where:
			*'''W<sub>n</sub>''' is the West number
			*'''W<sub>o</sub>''' is the power output of the engine ([[watt]]s)
			*'''P''' is the [[Arithmetic_mean\|mean average]] gas [[pressure]] ([[Pascal (unit)\|Pa]]) or ([[MPa]], if volume is in cm<sup>3</sup>)
			*'''V''' is swept [[volume]] of the expansion space (m<sup>3</sup>) or (cm³, if pressure is in MPa)
			*'''f''' is the engine cycle [[frequency]] ([[Hertz\|Hz]])
			*'''T<sub>H</sub>''' is the absolute [[temperature]] of the expansion space or [[heater]] ([[kelvin]]s)
			*'''T<sub>K</sub>''' is the absolute temperature of the compression space or cooler (kelvins)
			*'''B<sub>n</sub>''' is the [[Beale number]] for an engine operating between temperatures ''T''<sub>''H''</sub> and ''T''<sub>''K''</sub>

			When the Beale number is known, but the West number is not known, it is possible to calculate it. First calculate the West number at the temperatures ''T''<sub>''H''</sub> and ''T''<sub>''K''</sub> for which the Beale number is known, and then use the resulting West number to calculate output power for other temperatures.

			To estimate the power output of a new engine design, nominal values are assumed for the West number, pressure, swept volume and frequency, and the power is calculated as follows:

			:<math>W_o = W_n P V f \frac{(T_H - T_K)}{(T_H + T_K)} </math> <ref>[http://www.ornl.gov/~webworks/cppr/y2001/rpt/27113.pdf ornl-tm-10475<!-- Bot generated title -->]</ref>

			For example, with an absolute temperature ratio of 2, the portion of the equation representing temperature correction equals 1/3. With a temperature ratio of 3, the temperature term is 1/2. This factor accounts for the difference between the West equation, and the Beale equation in which this temperature term is taken as a constant. Thus, the Beale number is typically in the range of 0.10 to 0.15, which is about 1/3 to 1/2 the value of the West number.

			== References ==
			<references/>

			==External links==
			* [http://www.bekkoame.ne.jp/~khirata/academic/simple/simplee.htm Stirling Engine Performance Calculator]

			{{heat engines}}

			[[Category:Dimensionless numbers]]
			[[Category:Piston engines]]
			[[Category:Mechanical engineering]]

en>TedPavlic: /* Type II */ Insert missing macro name

2012-02-10T22:32:03Z

Type II: Insert missing macro name

New page

Claude is her name and she totally digs that name. The thing I adore most bottle tops collecting and now I have time to take on new things. Bookkeeping is how he supports his family members and his wage has been really fulfilling. My house is now in Kansas.<br><br>Feel free to surf to my blog - [http://Changbai.newdrycleaning.com/photo/54180 http://Changbai.newdrycleaning.com/photo/54180]