Isochore - Revision history

Jmdonev at 17:42, 9 October 2020

2020-10-09T17:42:40Z

← Older revision		Revision as of 17:42, 9 October 2020
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	[[Category:Done 2018-07-20]]		[[Category:Done 2018-07-20]]
	[[File:Isochore.png\|thumb\|500px\|right\|Figure 1. The [[PV diagram]] of an isochoric process]]		[[File:Isochore.png\|thumb\|500px\|right\|Figure 1. The [[PV diagram]] of an isochoric process<ref>Image made by Energyeducation team.</ref>]]
	<onlyinclude>An '''isochoric''' process in the context of [[thermodynamics]] is a term used to describe a situation where the volume of a [[system]] remains constant.</onlyinclude> This process is modelled on a [[pressure volume diagram]] (PV diagram) as seen in Figure 1. For this process to be possible, the [[ideal gas]] must be in a rigid container that doesn't change in volume or let any [[molecule]]s escape. Then, [[heat]] can be added or removed to change the pressure (and as a result also [[temperature]]) of the system.		<onlyinclude>An '''isochoric''' process in the context of [[thermodynamics]] is a term used to describe a situation where the volume of a [[system]] remains constant.</onlyinclude> This process is modelled on a [[pressure volume diagram]] (PV diagram) as seen in Figure 1. For this process to be possible, the [[ideal gas]] must be in a rigid container that doesn't change in volume or let any [[molecule]]s escape. Then, [[heat]] can be added or removed to change the pressure (and as a result also [[temperature]]) of the system.

Jmdonev at 19:26, 4 January 2019

2019-01-04T19:26:52Z

← Older revision		Revision as of 19:26, 4 January 2019
Line 1:		Line 1:
	[[Category:Done 2018-07-20]]		[[Category:Done 2018-07-20]]
	[[File:Isochore.png\|thumb\|500px\|right\|Figure 1. The [[PV diagram]] of an isochoric process]]		[[File:Isochore.png\|thumb\|500px\|right\|Figure 1. The [[PV diagram]] of an isochoric process]]
	An '''isochoric''' process in the context of [[thermodynamics]] is a term used to describe a situation where the volume of a [[system]] remains constant. This process is modelled on a [[pressure volume diagram]] (PV diagram) as seen in Figure 1. For this process to be possible, the [[ideal gas]] must be in a rigid container that doesn't change in volume or let any [[molecule]]s escape. Then, [[heat]] can be added or removed to change the pressure (and as a result also [[temperature]]) of the system.		<onlyinclude>An '''isochoric''' process in the context of [[thermodynamics]] is a term used to describe a situation where the volume of a [[system]] remains constant.</onlyinclude> This process is modelled on a [[pressure volume diagram]] (PV diagram) as seen in Figure 1. For this process to be possible, the [[ideal gas]] must be in a rigid container that doesn't change in volume or let any [[molecule]]s escape. Then, [[heat]] can be added or removed to change the pressure (and as a result also [[temperature]]) of the system.

	For [[work]] to be done on the system, a [[force]] which moves it a nonzero distance must be applied. However, due to the system not expanding or compressing it is not 'moving any distance', so the work done during these processes will be ''zero''.<ref>R. Knight, Physics for scientists and engineers. Boston, Mass.: Addison-Wesley, 2012, p. 474</ref> This can be seen visually on the [[pressure]]-[[volume]] diagram (figure 1), as there is no area under the curve (since work is found by calculating the area under the curve).		For [[work]] to be done on the system, a [[force]] which moves it a nonzero distance must be applied. However, due to the system not expanding or compressing it is not 'moving any distance', so the work done during these processes will be ''zero''.<ref>R. Knight, Physics for scientists and engineers. Boston, Mass.: Addison-Wesley, 2012, p. 474</ref> This can be seen visually on the [[pressure]]-[[volume]] diagram (figure 1), as there is no area under the curve (since work is found by calculating the area under the curve).

Jmdonev: 1 revision imported

2018-07-21T01:13:09Z

1 revision imported

← Older revision	Revision as of 01:13, 21 July 2018
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Jmdonev at 16:07, 20 July 2018

2018-07-20T16:07:09Z

New page

[[Category:Done 2018-07-20]]
[[File:Isochore.png|thumb|500px|right|Figure 1. The [[PV diagram]] of an isochoric process]]
An '''isochoric''' process in the context of [[thermodynamics]] is a term used to describe a situation where the volume of a [[system]] remains constant. This process is modelled on a [[pressure volume diagram]] (PV diagram) as seen in Figure 1. For this process to be possible, the [[ideal gas]] must be in a rigid container that doesn't change in volume or let any [[molecule]]s escape. Then, [[heat]] can be added or removed to change the pressure (and as a result also [[temperature]]) of the system.

For [[work]] to be done on the system, a [[force]] which moves it a nonzero distance must be applied. However, due to the system not expanding or compressing it is not 'moving any distance', so the work done during these processes will be ''zero''.<ref>R. Knight, Physics for scientists and engineers. Boston, Mass.: Addison-Wesley, 2012, p. 474</ref> This can be seen visually on the [[pressure]]-[[volume]] diagram (figure 1), as there is no area under the curve (since work is found by calculating the area under the curve).

One mechanism that uses the isochoric process is the expulsion of [[heat]] in [[heat engine]]s that use diesel and gasoline. The waste heat is expelled right after the vehicle or machine receives power from [[combustion]], but since the piston is not moving, the volume of the chamber is unchanging and the pressure drops. The process a gasoline engine undergoes is modelled by the [[Otto cycle]] (Figure 2) and diesel engines are modelled by the [[Diesel cycle]] (figure 3). An isochoric process is seen in the expulsion of heat in both process (4 to 1). Moreover, a gasoline engine exhibits an isochoric process during combustion as well (Figure 2, steps 2 to 3).

See the page on the [[Otto cycle]] and [[Diesel cycle]] for more information.

<gallery caption= "Applications of the Isochore" mode=packed heights=260px>
File:P-V_Otto_cycle.png|Figure 2. The PV diagram of the Otto Cycle<ref>Wikimedia Commons [Online], Available: https://en.wikipedia.org/wiki/Otto_cycle#/media/File:P-V_Otto_cycle.svg</ref>
File:diesel cycle.jpg|Figure 1. The PV diagram of the Diesel Cycle<ref>"File:Grafico p-v.JPG - Wikimedia Commons", Commons.wikimedia.org, 2018. [Online]. Available: https://commons.wikimedia.org/wiki/File:Grafico_p-v.JPG. [Accessed: 10- Jul- 2018].</ref>
</gallery>

==For Further Reading==
*[[Pressure volume diagram]]
*[[Heat]]
*[[Ideal gas law]]
*[[Isobar]]
*[[Isothermal]]
*[[Adiabatic]]
*Or explore a [[Special:Random| random page]]

==References==
{{reflist}}