{"id":50271,"date":"2020-01-11T16:50:20","date_gmt":"2020-01-11T15:50:20","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/que-es-el-ciclo-de-carnot-carnot-heat-engine-definicion\/"},"modified":"2020-01-11T16:51:51","modified_gmt":"2020-01-11T15:51:51","slug":"que-es-el-ciclo-de-carnot-carnot-heat-engine-definicion","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/es\/que-es-el-ciclo-de-carnot-carnot-heat-engine-definicion\/","title":{"rendered":"Qu\u00e9 es el ciclo de Carnot &#8211; Carnot Heat Engine &#8211; Definici\u00f3n"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">Un sistema que experimenta un ciclo de Carnot se llama motor de calor de Carnot.\u00a0El ciclo de Carnot es un ciclo te\u00f3rico con la mayor eficiencia posible de todos los ciclos termodin\u00e1micos.\u00a0Ingenieria termal<\/div>\n<\/div>\n<div><\/div>\n<div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights  lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<h2><span>Carnot Cycle &#8211; Carnot Heat Engine<\/span><\/h2>\n<figure id=\"attachment_17528\" class=\"wp-caption alignright\" aria-describedby=\"caption-attachment-17528\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Carnot-cycle-pV-Diagram-min.png\"><img loading=\"lazy\" class=\"size-medium wp-image-17528 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Carnot-cycle-pV-Diagram-min-300x211.png\" alt=\"diagrama pV del ciclo de Carnot\" width=\"300\" height=\"211\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Carnot-cycle-pV-Diagram-min-300x211.png\" \/><\/a><figcaption id=\"caption-attachment-17528\" class=\"wp-caption-text\"><span>Diagrama pV del ciclo de Carnot.\u00a0El \u00e1rea delimitada por la ruta completa del ciclo representa el trabajo total que se puede hacer durante un ciclo.<\/span><\/figcaption><\/figure>\n<p><span>La\u00a0<\/span><a title=\"Segunda ley de la termodin\u00e1mica\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-la-segunda-ley-de-la-termodinamica-definicion\/\"><strong><span>segunda ley de la termodin\u00e1mica<\/span><\/strong><\/a><span>\u00a0impone restricciones sobre la direcci\u00f3n de la transferencia de calor y establece un\u00a0<\/span><strong><span>l\u00edmite superior para la\u00a0<\/span><a title=\"Eficiencia t\u00e9rmica\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-la-eficiencia-termica-definicion\/\"><span>eficiencia<\/span><\/a><\/strong><span>\u00a0de la conversi\u00f3n de calor para trabajar en\u00a0<\/span><a title=\"Motores de calor\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-el-motor-termico-definicion\/\"><strong><span>motores de calor<\/span><\/strong><\/a><span>\u00a0.\u00a0Entonces, la segunda ley es directamente relevante para muchos problemas pr\u00e1cticos importantes.<\/span><\/p>\n<p><span>En 1824, un ingeniero y f\u00edsico franc\u00e9s,\u00a0<\/span><strong><span>Nicolas L\u00e9onard Sadi Carnot<\/span><\/strong><span>\u00a0avanz\u00f3 el estudio de la segunda ley al formar un principio (tambi\u00e9n llamado\u00a0<\/span><a title=\"Principio de Carnot - La regla de Carnot\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/laws-of-thermodynamics\/second-law-of-thermodynamics\/carnots-principle-carnots-rule\/\"><strong><span>la regla de Carnot<\/span><\/strong><\/a><span>\u00a0) que especifica los l\u00edmites de la\u00a0<\/span><strong><span>m\u00e1xima eficiencia que cualquier motor t\u00e9rmico<\/span><\/strong><span>\u00a0puede obtener.\u00a0En resumen, este principio establece que la\u00a0<\/span><strong><span>eficiencia de un ciclo termodin\u00e1mico<\/span><\/strong><span>\u00a0depende \u00fanicamente de la diferencia entre los dep\u00f3sitos de temperatura caliente y fr\u00eda.<\/span><\/p>\n<p><strong><span>El principio de Carnot establece:<\/span><\/strong><\/p>\n<ol>\n<li><span>Ning\u00fan motor puede ser m\u00e1s eficiente que un motor reversible (\u00a0<\/span><strong><span>un motor t\u00e9rmico de Carnot<\/span><\/strong><span>\u00a0) que opera entre los mismos dep\u00f3sitos de alta temperatura y baja temperatura.<\/span><\/li>\n<li><span>Las eficiencias de todos los motores reversibles (motores de\u00a0<\/span><strong><span>calor Carnot<\/span><\/strong><span>\u00a0) que funcionan entre los mismos dep\u00f3sitos de temperatura constante son los mismos, independientemente de la sustancia de trabajo empleada o los detalles de operaci\u00f3n.<\/span><\/li>\n<\/ol>\n<p><span>El ciclo de este motor se llama\u00a0<\/span><strong><span>ciclo de Carnot<\/span><\/strong><span>\u00a0.\u00a0Un sistema que experimenta un\u00a0<\/span><strong><span>ciclo de Carnot<\/span><\/strong><span>\u00a0se llama\u00a0<\/span><strong><span>motor de calor de Carnot<\/span><\/strong><span>\u00a0.\u00a0No es un ciclo termodin\u00e1mico real, pero es una construcci\u00f3n te\u00f3rica y no se puede construir en la pr\u00e1ctica.\u00a0Todos los procesos termodin\u00e1micos reales son de alguna manera\u00a0<\/span><a title=\"Irreversibilidad de los procesos naturales.\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/what-is-energy-physics\/what-is-entropy\/irreversibility-of-natural-processes\/\"><strong><span>irreversibles<\/span><\/strong><\/a><span>\u00a0.\u00a0No se realizan de manera\u00a0<\/span><strong><span>infinitamente lenta<\/span><\/strong><span>\u00a0e\u00a0<\/span><strong><span>infinitamente peque\u00f1os pasos<\/span><\/strong><span>\u00a0de temperatura tambi\u00e9n son una ficci\u00f3n te\u00f3rica.\u00a0Por lo tanto, los motores t\u00e9rmicos deben tener eficiencias m\u00e1s bajas que los l\u00edmites en su eficiencia debido a la irreversibilidad inherente del ciclo del motor t\u00e9rmico que usan.<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights  lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2><span>Ciclo de Carnot &#8211; Procesos<\/span><\/h2>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Carnot-cycle-Processes-min.png\"><img loading=\"lazy\" class=\"alignright  wp-image-17529 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Carnot-cycle-Processes-min.png\" alt=\"Ciclo de Carnot - Procesos\" width=\"370\" height=\"544\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Carnot-cycle-Processes-min.png\" \/><\/a><span>En un\u00a0<\/span><strong><span>ciclo de Carnot<\/span><\/strong><span>\u00a0, el sistema que ejecuta el ciclo experimenta una serie de\u00a0<\/span><strong><span>cuatro procesos internamente reversibles<\/span><\/strong><span>\u00a0:\u00a0<\/span><strong><span>dos\u00a0<\/span><a title=\"Proceso isentr\u00f3pico\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-el-proceso-isentropico-definicion\/\"><span>procesos isentr\u00f3picos<\/span><\/a><\/strong><span>\u00a0(adiab\u00e1ticos reversibles) alternados con\u00a0<\/span><strong><span>dos\u00a0<\/span><\/strong><a title=\"Proceso isot\u00e9rmico\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-el-proceso-isotermico-definicion\/\"><strong><span>procesos isot\u00e9rmicos<\/span><\/strong><\/a><span>\u00a0:<\/span><\/p>\n<ol>\n<li><strong><span>compresi\u00f3n isoentr\u00f3pica<\/span><\/strong><span>\u00a0&#8211; El gas se comprime adiab\u00e1ticamente del estado 1 al estado 2, donde la temperatura es\u00a0<\/span><strong><span>T\u00a0<\/span><sub><span>H<\/span><\/sub><\/strong><span>\u00a0.\u00a0Los alrededores trabajan con el gas, aumentando su energ\u00eda interna y comprimi\u00e9ndolo.\u00a0Por otro lado, la\u00a0<\/span><strong><span>entrop\u00eda<\/span><\/strong><span>\u00a0permanece\u00a0<\/span><strong><span>sin cambios<\/span><\/strong><span>\u00a0.<\/span><\/li>\n<li><strong><span>Isot\u00e9rmica expansi\u00f3n<\/span><\/strong><span>\u00a0&#8211; El sistema se coloca en contacto con el dep\u00f3sito en\u00a0<\/span><strong><span>T\u00a0<\/span><sub><span>H<\/span><\/sub><\/strong><span>\u00a0.\u00a0El gas se expande isot\u00e9rmicamente mientras recibe energ\u00eda Q\u00a0<\/span><sub><span>H<\/span><\/sub><span>\u00a0del dep\u00f3sito caliente por transferencia de calor.\u00a0La temperatura del gas no cambia durante el proceso.\u00a0El gas funciona en los alrededores.\u00a0El cambio total de entrop\u00eda viene dado por:\u00a0<\/span><strong><em><span>\u2206S = S\u00a0<\/span><\/em><\/strong><strong><em><sub><span>1<\/span><\/sub><\/em><\/strong><strong><em><span>\u00a0&#8211; S\u00a0<\/span><\/em><\/strong><strong><em><sub><span>4<\/span><\/sub><\/em><\/strong><strong><em><span>\u00a0= Q\u00a0<\/span><\/em><\/strong><strong><em><sub><span>H<\/span><\/sub><\/em><\/strong><strong><em><span>\u00a0\/ T\u00a0<\/span><\/em><\/strong><strong><em><sub><span>H<\/span><\/sub><\/em><\/strong><\/li>\n<li><strong><span>expansi\u00f3n isoentr\u00f3pica<\/span><\/strong><span>\u00a0&#8211; El gas se expande adiab\u00e1ticamente del estado 3 al estado 4, donde la temperatura es\u00a0<\/span><strong><span>T\u00a0<\/span><sub><span>C<\/span><\/sub><\/strong><span>\u00a0.\u00a0El gas funciona en el entorno y pierde una cantidad de energ\u00eda interna igual al trabajo que abandona el sistema.\u00a0Nuevamente, la entrop\u00eda permanece sin cambios.<\/span><\/li>\n<li><strong><span>isot\u00e9rmica de compresi\u00f3n<\/span><\/strong><span>\u00a0&#8211; El sistema se coloca en contacto con el dep\u00f3sito en\u00a0<\/span><strong><span>T\u00a0<\/span><sub><span>C<\/span><\/sub><\/strong><span>\u00a0.\u00a0El gas se comprime isot\u00e9rmicamente a su estado inicial mientras descarga energ\u00eda Q\u00a0<\/span><sub><span>C<\/span><\/sub><span>\u00a0al dep\u00f3sito fr\u00edo por transferencia de calor.\u00a0En este proceso, los alrededores trabajan con el gas.\u00a0El cambio total de entrop\u00eda viene dado por:\u00a0<\/span><strong><em><span>\u2206S = S\u00a0<\/span><\/em><\/strong><strong><em><sub><span>3<\/span><\/sub><\/em><\/strong><strong><em><span>\u00a0&#8211; S\u00a0<\/span><\/em><\/strong><strong><em><sub><span>2<\/span><\/sub><\/em><\/strong><strong><em><span>\u00a0= Q\u00a0<\/span><\/em><\/strong><strong><em><sub><span>C<\/span><\/sub><\/em><\/strong><strong><em><span>\u00a0\/ T\u00a0<\/span><\/em><\/strong><strong><em><sub><span>C<\/span><\/sub><\/em><\/strong><\/li>\n<\/ol>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights  lgc-first\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2><span>Proceso isentr\u00f3pico<\/span><\/h2>\n<p><span>Un\u00a0<\/span><a title=\"Proceso isentr\u00f3pico\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-el-proceso-isentropico-definicion\/\"><strong><span>proceso isentr\u00f3pico<\/span><\/strong><\/a><span>\u00a0es un\u00a0<\/span><a title=\"Procesos termodin\u00e1micos.\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-el-proceso-termodinamico-definicion\/\"><strong><span>proceso termodin\u00e1mico<\/span><\/strong><\/a><span>\u00a0, en el cual la\u00a0<\/span><a title=\"\u00bfQu\u00e9 es la entrop\u00eda?\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/what-is-energy-physics\/what-is-entropy\/\"><strong><span>entrop\u00eda<\/span><\/strong>\u00a0<\/a><span>del fluido o gas permanece constante.\u00a0Significa que el\u00a0<\/span><strong><span>proceso isentr\u00f3pico<\/span><\/strong><span>\u00a0es un caso especial de un\u00a0<\/span><strong><span>proceso adiab\u00e1tico<\/span><\/strong><span>\u00a0en el que no hay transferencia de calor o materia.\u00a0Es un\u00a0<\/span><strong><span>proceso adiab\u00e1tico reversible<\/span><\/strong><span>\u00a0.\u00a0La suposici\u00f3n de que no hay transferencia de calor es muy importante, ya que podemos usar la aproximaci\u00f3n adiab\u00e1tica solo en\u00a0<\/span><strong><span>procesos muy r\u00e1pidos<\/span><\/strong><span>\u00a0.<\/span><\/p>\n<p><strong><span>Proceso isentr\u00f3pico y la primera ley<\/span><\/strong><\/p>\n<p><span>Para un sistema cerrado, podemos escribir la\u00a0<\/span><strong><a title=\"Primera ley en t\u00e9rminos de entalp\u00eda dH = dQ + Vdp\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/laws-of-thermodynamics\/first-law-of-thermodynamics\/first-law-in-terms-of-enthalpy-dh-dq-vdp\/\"><span>primera ley de la termodin\u00e1mica en t\u00e9rminos de entalp\u00eda<\/span><\/a><\/strong><span>\u00a0:<\/span><\/p>\n<p><strong><span>dH = dQ + Vdp<\/span><\/strong><\/p>\n<p><strong><span>o<\/span><\/strong><\/p>\n<p><strong><span>dH = TdS + Vdp<\/span><\/strong><\/p>\n<p><strong><span>Proceso isentr\u00f3pico (dQ = 0):<\/span><\/strong><\/p>\n<p><strong><span>dH = Vdp \u2192 W = H\u00a0<\/span><\/strong><strong><sub><span>2<\/span><\/sub><\/strong><strong><span>\u00a0&#8211; H\u00a0<\/span><\/strong><strong><sub><span>1<\/span><\/sub><\/strong><strong><span>\u00a0\u00a0\u00a0\u00a0\u00a0\u2192 H\u00a0<\/span><\/strong><strong><sub><span>2<\/span><\/sub><\/strong><strong><span>\u00a0&#8211; H\u00a0<\/span><\/strong><strong><sub><span>1<\/span><\/sub><\/strong><strong><span>\u00a0=\u00a0<\/span><em><span>C\u00a0<\/span><\/em><\/strong><strong><em><sub><span>p<\/span><\/sub><\/em><\/strong><strong><em><span>\u00a0(T\u00a0<\/span><\/em><\/strong><strong><em><sub><span>2<\/span><\/sub><\/em><\/strong><strong><em><span>\u00a0&#8211; T\u00a0<\/span><\/em><\/strong><strong><em><sub><span>1<\/span><\/sub><\/em><\/strong><strong><em><span>\u00a0) \u00a0\u00a0\u00a0<\/span><\/em><\/strong><em><span>\u00a0(para\u00a0<\/span><a title=\"\u00bfQu\u00e9 es el gas ideal?\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/ideal-gas-law\/what-is-ideal-gas\/\"><span>gas ideal<\/span><\/a><span>\u00a0)<\/span><\/em><\/p>\n<p><strong><span>Proceso isentr\u00f3pico del gas ideal<\/span><\/strong><\/p>\n<p><span>El\u00a0<\/span><strong><span>proceso isentr\u00f3pico<\/span><\/strong><span>\u00a0(un caso especial de proceso adiab\u00e1tico) se puede expresar con la\u00a0<\/span><a title=\"Ley del gas ideal\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/ideal-gas-law\/\"><strong><span>ley de los gases ideales<\/span><\/strong><\/a><span>\u00a0como:<\/span><\/p>\n<p><strong><em><span>pV\u00a0<\/span><sup><span>\u03ba<\/span><\/sup><span>\u00a0= constante<\/span><\/em><\/strong><\/p>\n<p><span>o<\/span><\/p>\n<p><em><strong><span>p\u00a0<\/span><sub><span>1<\/span><\/sub><span>\u00a0V\u00a0<\/span><sub><span>1\u00a0<\/span><\/sub><sup><span>\u03ba<\/span><\/sup><span>\u00a0= p\u00a0<\/span><sub><span>2<\/span><\/sub><span>\u00a0V\u00a0<\/span><sub><span>2\u00a0<\/span><\/sub><sup><span>\u03ba<\/span><\/sup><\/strong><\/em><\/p>\n<p><span>en el que\u00a0<\/span><strong><span>\u03ba = c\u00a0<\/span><sub><span>p<\/span><\/sub><span>\u00a0\/ c\u00a0<\/span><sub><span>v<\/span><\/sub><\/strong><span>\u00a0es la relaci\u00f3n de los\u00a0<a title=\"Capacidad de calor - Capacidad de calor espec\u00edfica\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/laws-of-thermodynamics\/first-law-of-thermodynamics\/heat-capacity\/\"><strong>calores espec\u00edficos<\/strong><\/a>\u00a0(o\u00a0<strong>capacidades de calor<\/strong>\u00a0) para el gas.\u00a0Uno para\u00a0<strong>presi\u00f3n constante (c\u00a0<\/strong><strong><sub>p<\/sub><\/strong><strong>\u00a0)<\/strong>\u00a0y otro para\u00a0<strong>volumen constante (c\u00a0<\/strong><strong><sub>v<\/sub><\/strong><strong>\u00a0)<\/strong>\u00a0.\u00a0Tenga en cuenta que esta relaci\u00f3n\u00a0<strong>\u03ba\u00a0\u00a0<\/strong><strong>= c\u00a0<\/strong><strong><sub>p<\/sub><\/strong><strong>\u00a0\/ c\u00a0<\/strong><strong><sub>v<\/sub><\/strong>\u00a0es un factor para determinar la velocidad del sonido en un gas y otros procesos adiab\u00e1ticos.<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights  lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2><span>Proceso isot\u00e9rmico<\/span><\/h2>\n<p><span>Un\u00a0<\/span><strong><span>proceso isot\u00e9rmico<\/span><\/strong><span>\u00a0es un\u00a0<\/span><a title=\"Procesos termodin\u00e1micos.\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-el-proceso-termodinamico-definicion\/\"><strong><span>proceso termodin\u00e1mico<\/span><\/strong><\/a><span>\u00a0, en el que la\u00a0<\/span><strong><span>temperatura<\/span><\/strong><span>\u00a0del sistema\u00a0<\/span><strong><span>permanece constante<\/span><\/strong><span>\u00a0(T = constante).\u00a0La transferencia de calor dentro o fuera del sistema generalmente debe ocurrir a una velocidad tan lenta para ajustarse continuamente a la temperatura del dep\u00f3sito a trav\u00e9s del intercambio de calor.\u00a0En cada uno de estos estados\u00a0se mantiene el\u00a0<\/span><a title=\"Equilibrio termal\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/thermodynamic-properties\/what-is-temperature-physics\/thermal-equilibrium\/\"><strong><span>equilibrio t\u00e9rmico<\/span><\/strong><\/a><span>\u00a0.<\/span><\/p>\n<p><strong><span>Proceso isot\u00e9rmico y la primera ley<\/span><\/strong><\/p>\n<p><span>La forma cl\u00e1sica de la\u00a0<\/span><a title=\"Primera ley de la termodin\u00e1mica\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-la-primera-ley-de-la-termodinamica-definicion\/\"><span>primera ley de la termodin\u00e1mica<\/span><\/a><span>\u00a0es la siguiente ecuaci\u00f3n:<\/span><\/p>\n<p><strong><span>dU = dQ &#8211; dW<\/span><\/strong><\/p>\n<p><span>En esta ecuaci\u00f3n, dW es igual a\u00a0<\/span><strong><span>dW = pdV<\/span><\/strong><span>\u00a0y se conoce como el\u00a0<\/span><a title=\"p\u0394V Work - Trabajo de l\u00edmite y V\u0394p Work\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/laws-of-thermodynamics\/first-law-of-thermodynamics\/p%ce%b4v-work-boundary-work-and-v%ce%b4p-work\/\"><span>trabajo l\u00edmite<\/span><\/a><span>\u00a0.<\/span><\/p>\n<p><span>En el\u00a0<\/span><strong><span>proceso isot\u00e9rmico<\/span><\/strong><span>\u00a0y el\u00a0<\/span><a title=\"Ley del gas ideal\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/ideal-gas-law\/\"><strong><span>gas ideal<\/span><\/strong><\/a><span>\u00a0, todo el calor agregado al sistema se utilizar\u00e1 para hacer el trabajo:<\/span><\/p>\n<p><strong><span>Proceso isot\u00e9rmico (dU = 0):<\/span><\/strong><\/p>\n<p><strong><span>dU = 0 = Q &#8211; W \u2192 W = Q \u00a0\u00a0<\/span><em>\u00a0\u00a0\u00a0\u00a0<\/em><\/strong><em><span>(para gas ideal)<\/span><\/em><\/p>\n<p><strong><span>Proceso isot\u00e9rmico del gas ideal<\/span><\/strong><\/p>\n<p><span>El\u00a0<\/span><strong><span>proceso isot\u00e9rmico\u00a0<\/span><\/strong><span>\u00a0se puede expresar con la\u00a0<\/span><strong><span>ley de los gases ideales<\/span><\/strong><span>\u00a0como:<\/span><\/p>\n<p><strong><em><span>pV = constante<\/span><\/em><\/strong><\/p>\n<p><span>o<\/span><\/p>\n<p><em><strong><span>p\u00a0<\/span><sub><span>1<\/span><\/sub><span>\u00a0V\u00a0<\/span><sub><span>1<\/span><\/sub><span>\u00a0\u00a0= p\u00a0<\/span><sub><span>2<\/span><\/sub><span>\u00a0V\u00a0<\/span><sub><span>2<\/span><\/sub><\/strong><\/em><\/p>\n<p><span>En un diagrama de pV, el proceso se produce a lo largo de una l\u00ednea (llamada una isoterma) que tiene la ecuaci\u00f3n\u00a0<\/span><strong><span>p = constante \/ V<\/span><\/strong><span>\u00a0.<\/span><\/p>\n<p><span>Ver tambi\u00e9n:\u00a0<\/span><a title=\"Ley de Boyle-Mariotte\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-la-ley-de-boyle-mariotte-definicion\/\"><span>Ley de Boyle-Mariotte<\/span><\/a><\/p>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights  lgc-first\">\n<div class=\"inside-grid-column\">\n<figure id=\"attachment_17280\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-17280\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Isentropic-Process-characteristics.png\"><img loading=\"lazy\" class=\"size-full wp-image-17280 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Isentropic-Process-characteristics.png\" alt=\"Proceso isentr\u00f3pico - caracter\u00edsticas\" width=\"386\" height=\"609\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Isentropic-Process-characteristics.png\" \/><\/a><figcaption id=\"caption-attachment-17280\" class=\"wp-caption-text\"><span>Proceso isentr\u00f3pico &#8211; caracter\u00edsticas principales<\/span><\/figcaption><\/figure>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights  lgc-last\">\n<div class=\"inside-grid-column\">\n<figure id=\"attachment_17407\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-17407\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/isothermal-process-main-characteristics.png\"><img loading=\"lazy\" class=\"size-full wp-image-17407 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/isothermal-process-main-characteristics.png\" alt=\"Proceso isot\u00e9rmico - caracter\u00edsticas principales\" width=\"382\" height=\"714\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/isothermal-process-main-characteristics.png\" \/><\/a><figcaption id=\"caption-attachment-17407\" class=\"wp-caption-text\"><span>Proceso isot\u00e9rmico &#8211; caracter\u00edsticas principales<\/span><\/figcaption><\/figure>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights  lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2><span>Ciclo de Carnot &#8211; pV, diagrama Ts<\/span><\/h2>\n<figure id=\"attachment_17527\" class=\"wp-caption alignright\" aria-describedby=\"caption-attachment-17527\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Carnot-cycle-Ts-Diagram-min.png\"><img loading=\"lazy\" class=\"size-medium wp-image-17527 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Carnot-cycle-Ts-Diagram-min-300x232.png\" alt=\"Diagrama Ts del ciclo de Carnot\" width=\"300\" height=\"232\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Carnot-cycle-Ts-Diagram-min-300x232.png\" \/><\/a><figcaption id=\"caption-attachment-17527\" class=\"wp-caption-text\"><span>Diagrama Ts del ciclo de Carnot.\u00a0El \u00e1rea bajo la curva Ts de un proceso es el calor transferido al sistema durante ese proceso.<\/span><\/figcaption><\/figure>\n<p><span>El ciclo de Carnot a menudo se representa en un\u00a0<\/span><strong><span>diagrama de presi\u00f3n-volumen<\/span><\/strong><span>\u00a0(\u00a0<strong>diagrama\u00a0<\/strong><\/span><strong><span>pV<\/span><\/strong><span>\u00a0) y en un\u00a0<\/span><strong><span>diagrama de temperatura-entrop\u00eda<\/span><\/strong><span>\u00a0(\u00a0<\/span><strong><span>diagrama Ts<\/span><\/strong><span>\u00a0).<\/span><\/p>\n<p><span>Cuando se trazan en un\u00a0<\/span><strong><span>diagrama de presi\u00f3n-volumen<\/span><\/strong><span>\u00a0, los procesos isot\u00e9rmicos siguen las l\u00edneas isot\u00e9rmicas del gas, los procesos adiab\u00e1ticos se mueven entre isotermas y el \u00e1rea delimitada por la ruta completa del ciclo representa el trabajo total que se puede hacer durante un ciclo.<\/span><\/p>\n<p><span>El\u00a0<\/span><strong><span>diagrama de temperatura-entrop\u00eda<\/span><\/strong><span>\u00a0(\u00a0<strong>diagrama<\/strong>\u00a0Ts) en el que el estado termodin\u00e1mico se especifica mediante un punto en un gr\u00e1fico con\u00a0<\/span><a title=\"Entrop\u00eda Espec\u00edfica\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/what-is-energy-physics\/what-is-entropy\/specific-entropy\/\"><span>entrop\u00eda espec\u00edfica<\/span><\/a><span>\u00a0(s) como eje horizontal y temperatura absoluta (T) como eje vertical, es el mejor diagrama para describir el comportamiento de un\u00a0<\/span><strong><span>ciclo de Carnot<\/span><\/strong><span>\u00a0.<\/span><\/p>\n<p><span>Es una herramienta \u00fatil y com\u00fan, particularmente porque ayuda a visualizar la transferencia de calor durante un proceso.\u00a0Para procesos reversibles (ideales), el \u00e1rea bajo la curva Ts de un proceso es el calor transferido al sistema durante ese proceso.<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights  lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2><span>Eficiencia del ciclo de Carnot<\/span><\/h2>\n<p><span>En general, la\u00a0<\/span><a title=\"Eficiencia t\u00e9rmica\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-la-eficiencia-termica-definicion\/\"><strong><span>eficiencia t\u00e9rmica<\/span><\/strong><\/a><span>\u00a0,\u00a0<\/span><strong><em><span>\u03b7\u00a0<\/span><\/em><\/strong><strong><em><sub><span>\u00ba<\/span><\/sub><\/em><\/strong><span>\u00a0, de cualquier motor de calor se define como la relaci\u00f3n de la red\u00a0<\/span><a href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-el-trabajo-en-termodinamica-definicion\/\"><span>de trabajo<\/span><\/a><span>\u00a0que hace,\u00a0<\/span><strong><span>W<\/span><\/strong><span>\u00a0, para el\u00a0<\/span><a href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-el-calor-en-la-fisica-calor-definicion\/\"><span>calor<\/span><\/a><span>\u00a0de entrada a la alta temperatura, Q\u00a0<\/span><sub><span>H<\/span><\/sub><span>\u00a0.<\/span><\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/thermal-efficiency-formula-1.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-16945 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/thermal-efficiency-formula-1.png\" alt=\"f\u00f3rmula de eficiencia t\u00e9rmica - 1\" width=\"125\" height=\"82\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/thermal-efficiency-formula-1.png\" \/><\/a><\/p>\n<p><span>Dado que la energ\u00eda se conserva de acuerdo con la\u00a0<\/span><a href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-la-primera-ley-de-la-termodinamica-definicion\/\"><strong><span>primera ley de la termodin\u00e1mica<\/span><\/strong>\u00a0<\/a><span>y la energ\u00eda no se puede convertir en trabajo por completo, la entrada de calor, Q\u00a0<\/span><sub><span>H<\/span><\/sub><span>\u00a0, debe ser igual al trabajo realizado, W, m\u00e1s el calor que se debe disipar como\u00a0<\/span><strong><span>calor residual Q\u00a0<\/span><\/strong><strong><sub><span>C<\/span><\/sub><\/strong><span>\u00a0en el ambiente.\u00a0Por lo tanto, podemos reescribir la f\u00f3rmula para la eficiencia t\u00e9rmica como:<\/span><\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/thermal-efficiency-formula-2.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-16944 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/thermal-efficiency-formula-2.png\" alt=\"f\u00f3rmula de eficiencia t\u00e9rmica - 2\" width=\"352\" height=\"83\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/thermal-efficiency-formula-2.png\" \/><\/a><\/p>\n<p><span>Dado que\u00a0<\/span><strong><em><span>Q\u00a0<\/span><\/em><\/strong><strong><em><sub><span>C<\/span><\/sub><\/em><\/strong><strong><em><span>\u00a0= \u2206ST\u00a0<\/span><\/em><\/strong><strong><em><sub><span>C<\/span><\/sub><\/em><\/strong>\u00a0<em><span>y\u00a0<\/span><strong><span>Q\u00a0<\/span><\/strong><\/em><strong><em><sub><span>H<\/span><\/sub><\/em><\/strong><strong><em><span>\u00a0= \u2206ST\u00a0<\/span><\/em><\/strong><strong><em><sub><span>H<\/span><\/sub><\/em><\/strong><span>\u00a0, la f\u00f3rmula para esta eficiencia m\u00e1xima es:<\/span><\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/carnot-efficiency-equation.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-16897 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/carnot-efficiency-equation.png\" alt=\"F\u00f3rmula de eficiencia de Carnot\" width=\"369\" height=\"91\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/carnot-efficiency-equation.png\" \/><\/a><\/p>\n<p><span>d\u00f3nde:<\/span><\/p>\n<ul>\n<li><span>es la eficiencia del ciclo de Carnot, es decir, es la relaci\u00f3n\u00a0<\/span><strong><span>= W \/ Q\u00a0<\/span><\/strong><strong><sub><span>H<\/span><\/sub><\/strong><span>\u00a0del trabajo realizado por el motor a la energ\u00eda t\u00e9rmica que ingresa al sistema desde el dep\u00f3sito caliente.<\/span><\/li>\n<li><strong><span>T\u00a0<\/span><\/strong><strong><sub><span>C<\/span><\/sub><\/strong><span>\u00a0es la temperatura absoluta (Kelvins) del dep\u00f3sito fr\u00edo,<\/span><\/li>\n<li><strong><span>T\u00a0<\/span><\/strong><strong><sub><span>H<\/span><\/sub><\/strong><span>\u00a0es la temperatura absoluta (Kelvins) del dep\u00f3sito caliente.<\/span><\/li>\n<\/ul>\n<p><span>Ver tambi\u00e9n:\u00a0<\/span><a title=\"Causas de la ineficiencia - Eficiencia t\u00e9rmica\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/laws-of-thermodynamics\/thermal-efficiency\/causes-of-inefficiency\/\"><span>causas de ineficiencias<\/span><\/a><\/p>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights  lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2><span>Ejemplo: eficiencia de Carnot para una central el\u00e9ctrica de carb\u00f3n<\/span><\/h2>\n<p><span>En una moderna\u00a0<\/span><strong><span>planta de energ\u00eda de carb\u00f3n<\/span><\/strong><span>\u00a0, la temperatura del\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-nuclear-engineering\/properties-steam-what-is-steam\/supercritical-fluid-supercritical-water\/what-is-supercritical-steam\/\"><strong><span>vapor de alta presi\u00f3n<\/span><\/strong><\/a><span>\u00a0(T\u00a0<\/span><sub><span>caliente<\/span><\/sub><span>\u00a0) ser\u00eda de unos 400 \u00b0 C (673K) y T\u00a0<\/span><sub><span>fr\u00edo<\/span><\/sub><span>\u00a0, la temperatura de agua de la torre de refrigeraci\u00f3n, ser\u00eda de alrededor de 20 \u00b0 C (293 K).\u00a0Para este tipo de planta de energ\u00eda, la eficiencia m\u00e1xima (ideal) ser\u00e1:<\/span><\/p>\n<p><strong><em><span>\u03b7\u00a0<\/span><\/em><\/strong><strong><em><sub><span>th<\/span><\/sub><\/em><\/strong><span>\u00a0= 1 &#8211; T<\/span><sub><span>\u00a0fr\u00edo<\/span><\/sub><span>\u00a0\/ T<\/span><sub><span>\u00a0caliente<\/span><\/sub><span>\u00a0= 1 &#8211; 293\/673 =<\/span><strong><span>\u00a056%<\/span><\/strong><\/p>\n<p><span>Debe agregarse, esta es una\u00a0<\/span><strong><span>eficiencia idealizada<\/span><\/strong><span>\u00a0.\u00a0La eficiencia de Carnot es v\u00e1lida para procesos reversibles.\u00a0Estos procesos no pueden lograrse en ciclos reales de centrales el\u00e9ctricas.\u00a0La eficiencia de Carnot dicta que se pueden lograr mayores eficiencias aumentando la temperatura del vapor.\u00a0Esta caracter\u00edstica es v\u00e1lida tambi\u00e9n para ciclos termodin\u00e1micos reales.\u00a0Pero esto requiere un aumento de las presiones dentro de las calderas o\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/steam-generator\/\"><span>generadores de vapor<\/span><\/a><span>\u00a0.\u00a0Sin embargo, las consideraciones metal\u00fargicas ponen\u00a0<\/span><strong><span>l\u00edmites superiores<\/span><\/strong><span>\u00a0a tales presiones.\u00a0Las plantas de energ\u00eda de combustible f\u00f3sil subcr\u00edtico, que funcionan bajo\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/thermodynamic-properties\/what-is-pressure-physics\/critical-pressure-of-water\/\"><strong><span>presi\u00f3n cr\u00edtica<\/span><\/strong><\/a><span>\u00a0(es decir, por debajo de 22.1 MPa), pueden lograr una eficiencia de 36 a 40%.\u00a0Dise\u00f1os supercr\u00edticos, que funcionan a\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-nuclear-engineering\/properties-steam-what-is-steam\/supercritical-fluid-supercritical-water\/what-is-supercritical-steam\/\"><strong><span>presi\u00f3n supercr\u00edtica<\/span><\/strong><\/a><span>(es decir, superior a 22.1 MPa), tienen eficiencias alrededor del 43%.\u00a0Las centrales el\u00e9ctricas de carb\u00f3n m\u00e1s eficientes y tambi\u00e9n muy complejas que funcionan a\u00a0<\/span><strong><span>presiones &#8220;ultra cr\u00edticas&#8221;<\/span><\/strong><span>\u00a0(es decir, alrededor de 30 MPa) y usan recalentamiento de etapas m\u00faltiples alcanzan aproximadamente el 48% de eficiencia.<\/span><\/p>\n<p><span>Ver tambi\u00e9n: <\/span><span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power-plant\/reactor-types\/supercritical-water-reactor-scwr\/\">Reactor supercr\u00edtico<\/a><\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.<\/p>\n<p>Este art\u00edculo se basa en la traducci\u00f3n autom\u00e1tica del art\u00edculo original en ingl\u00e9s. Para m\u00e1s informaci\u00f3n vea el art\u00edculo en ingl\u00e9s. Puedes ayudarnos. Si desea corregir la traducci\u00f3n, env\u00edela a: translations@nuclear-power.com o complete el formulario de traducci\u00f3n en l\u00ednea. Agradecemos su ayuda, actualizaremos la traducci\u00f3n lo antes posible. Gracias.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Un sistema que experimenta un ciclo de Carnot se llama motor de calor de Carnot.\u00a0El ciclo de Carnot es un ciclo te\u00f3rico con la mayor eficiencia posible de todos los ciclos termodin\u00e1micos.\u00a0Ingenieria termal Carnot Cycle &#8211; Carnot Heat Engine Diagrama pV del ciclo de Carnot.\u00a0El \u00e1rea delimitada por la ruta completa del ciclo representa el &#8230; <a title=\"Qu\u00e9 es el ciclo de Carnot &#8211; Carnot Heat Engine &#8211; Definici\u00f3n\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-el-ciclo-de-carnot-carnot-heat-engine-definicion\/\" aria-label=\"M\u00e1s en Qu\u00e9 es el ciclo de Carnot &#8211; Carnot Heat Engine &#8211; Definici\u00f3n\">Leer m\u00e1s<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[16],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qu\u00e9 es el ciclo de Carnot - Carnot Heat Engine - Definici\u00f3n<\/title>\n<meta name=\"description\" content=\"Un sistema que experimenta un ciclo de Carnot se llama motor de calor de Carnot. 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