Megawatts electric - Revision history

Jmdonev: 1 revision imported

2020-04-28T15:32:41Z

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energy>Jmdonev at 22:39, 10 April 2020

2020-04-10T22:39:51Z

← Older revision		Revision as of 22:39, 10 April 2020
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	[[Category:Done ~~2018~~-08-03]]		[[Category:Done 2020-02-29]]
	[[File:MWtMWe.png\|350px\|thumb\|Figure 1. The power input in a heat engine is measured as MWt, and the output power obtained as electricity is measured as MWe.<ref>''Made internally by a member of the Encyclopedia team''</ref>]]		[[File:MWtMWe.png\|350px\|thumb\|Figure 1. The power input in a heat engine is measured as MWt, and the output power obtained as electricity is measured as MWe.<ref>''Made internally by a member of the Encyclopedia team''</ref>]]

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	It is good to understand the difference between the two numbers, because, in the event of a proposed project, you can understand how efficient a plant will be. The closer a power plant's MWt and MWe ratings are, the more efficient it is.		It is good to understand the difference between the two numbers, because, in the event of a proposed project, you can understand how efficient a plant will be. The closer a power plant's MWt and MWe ratings are, the more efficient it is.

	It is worth noting that not all power plants are heat engines, specifically [[hydroelectricity]], [[photovoltaic electricity]] and [[wind power]] are not heat engines so they have no megawatt thermal rating. These [[flow]]s ~~of [[energy]]~~ have other types of [[energy loss\|losses]] associated with them though. Likewise [[fuel cell]]s aren't heat engines, but are not able to [[energy conversion technology\|convert energy]] without losses.		It is worth noting that not all power plants are heat engines, specifically [[hydroelectricity]], [[photovoltaic electricity]] and [[wind power]] are not heat engines so they have no megawatt thermal rating. These [[primary energy flow]]s have other types of [[energy loss\|losses]] associated with them though. Likewise [[fuel cell]]s aren't heat engines, but are not able to [[energy conversion technology\|convert energy]] without losses.

	==For Further Reading==		==For Further Reading==

Jmdonev: 1 revision imported

2018-09-03T22:23:42Z

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energy>Jmdonev at 21:04, 26 August 2018

2018-08-26T21:04:49Z

← Older revision		Revision as of 21:04, 26 August 2018
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	[[Category:Done ~~2017~~-07-01]]		[[Category:Done 2018-08-03]]
	[[File:MWtMWe.png\|350px\|thumb\|Figure 1. The power input in a heat engine is measured as MWt, and the output power obtained as electricity is measured as MWe.<ref>''Made internally by a member of the Encyclopedia team''</ref>]]		[[File:MWtMWe.png\|350px\|thumb\|Figure 1. The power input in a heat engine is measured as MWt, and the output power obtained as electricity is measured as MWe.<ref>''Made internally by a member of the Encyclopedia team''</ref>]]

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	It is worth noting that not all power plants are heat engines, specifically [[hydroelectricity]], [[photovoltaic electricity]] and [[wind power]] are not heat engines so they have no megawatt thermal rating. These [[flow]]s of [[energy]] have other types of [[energy loss\|losses]] associated with them though. Likewise [[fuel cell]]s aren't heat engines, but are not able to [[energy conversion technology\|convert energy]] without losses.		It is worth noting that not all power plants are heat engines, specifically [[hydroelectricity]], [[photovoltaic electricity]] and [[wind power]] are not heat engines so they have no megawatt thermal rating. These [[flow]]s of [[energy]] have other types of [[energy loss\|losses]] associated with them though. Likewise [[fuel cell]]s aren't heat engines, but are not able to [[energy conversion technology\|convert energy]] without losses.

			==For Further Reading==
			*[[Megawatts thermal]]
			*[[Power plant]]
			*[[Work]]
			*[[First law of thermodynamics]]
			*[[Second law of thermodynamics]]
			*Or explore a [[Special:Random\| random page]]

	==References==		==References==
	{{reflist}}		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

Jmdonev: 1 revision imported

2017-08-29T01:47:28Z

1 revision imported

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Jmdonev at 21:15, 17 August 2017

2017-08-17T21:15:29Z

← Older revision		Revision as of 21:15, 17 August 2017
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	[[Category:Done ~~2015~~-06-11]]		[[Category:Done 2017-07-01]]
	[[File:MWtMWe.png\|350px\|thumb\|Figure 1. The ~~energy~~ input in a heat engine is measured as MWt, and the output ~~energy~~ obtained as electricity is measured as MWe.<ref>''Made internally by a member of the Encyclopedia team''</ref>]]		[[File:MWtMWe.png\|350px\|thumb\|Figure 1. The power input in a heat engine is measured as MWt, and the output power obtained as electricity is measured as MWe.<ref>''Made internally by a member of the Encyclopedia team''</ref>]]

	<onlyinclude>'''Megawatts electric''' or '''MWe''' is one of the two values assigned to a [[power plant]], the other being [[megawatts thermal]] or MWt. Megawatts electric refers to the [[electricity]] output capability of the plant, and megawatts thermal refers to the input energy required.</onlyinclude><ref>R. Wolfson, "Energy and Heat," in ''Energy, Environment and Climate,'' 2nd ed. New York, U.S.A.: Norton, 2012, pp. 86-87</ref> Power plants are assigned two values as most are [[heat engine]]s, and therefore can't turn 100% of their input energy into electricity. This idea is closely related to [[mechanical power]], how much power an engine can put out.		<onlyinclude>'''Megawatts electric''' or '''MWe''' is one of the two values assigned to a [[power plant]], the other being [[megawatts thermal]] or MWt. Megawatts electric refers to the [[electricity]] output capability of the plant, and megawatts thermal refers to the input energy required.</onlyinclude><ref>R. Wolfson, "Energy and Heat," in ''Energy, Environment and Climate,'' 2nd ed. New York, U.S.A.: Norton, 2012, pp. 86-87</ref> Power plants are assigned two values as most are [[heat engine]]s, and therefore can't turn 100% of their input energy into electricity. This idea is closely related to [[mechanical power]], how much power an engine can put out.

J.williams: 1 revision imported

2015-08-26T21:31:21Z

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← Older revision	Revision as of 21:31, 26 August 2015
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J.williams at 16:56, 12 August 2015

2015-08-12T16:56:52Z

New page

[[Category:Done 2015-06-11]]
[[File:MWtMWe.png|350px|thumb|Figure 1. The energy input in a heat engine is measured as MWt, and the output energy obtained as electricity is measured as MWe.<ref>''Made internally by a member of the Encyclopedia team''</ref>]]

<onlyinclude>'''Megawatts electric''' or '''MWe''' is one of the two values assigned to a [[power plant]], the other being [[megawatts thermal]] or MWt. Megawatts electric refers to the [[electricity]] output capability of the plant, and megawatts thermal refers to the input energy required.</onlyinclude><ref>R. Wolfson, "Energy and Heat," in ''Energy, Environment and Climate,'' 2nd ed. New York, U.S.A.: Norton, 2012, pp. 86-87</ref> Power plants are assigned two values as most are [[heat engine]]s, and therefore can't turn 100% of their input energy into electricity. This idea is closely related to [[mechanical power]], how much power an engine can put out.

For example, a [[coal-fired power plant]] rated at 1000 MWe and 3000 MWt will require supply of 3000 MW of [[heat]] from burning [[coal]] for every 1000 MW of electricity it produces. That's approximately 100 kg of coal every second. This means that it puts out 2000 MW of [[waste heat]], usually into a large body of water or the [[atmosphere]]. 1000 MWe for every 3000 MWt leads to an efficiency of 33%, which is fairly standard for older plants.

It is good to understand the difference between the two numbers, because, in the event of a proposed project, you can understand how efficient a plant will be. The closer a power plant's MWt and MWe ratings are, the more efficient it is.

It is worth noting that not all power plants are heat engines, specifically [[hydroelectricity]], [[photovoltaic electricity]] and [[wind power]] are not heat engines so they have no megawatt thermal rating. These [[flow]]s of [[energy]] have other types of [[energy loss|losses]] associated with them though. Likewise [[fuel cell]]s aren't heat engines, but are not able to [[energy conversion technology|convert energy]] without losses.

==References==
{{reflist}}
[[Category:Uploaded]]