Extracción de calor con un serpentín de enfriamiento geankoplis

Nexo Revista Científica, 2019

Los intercambiadores de calor de serpentín son empleados en varias aplicaciones industriales debido a su estructura compacta y los elevados coeficientes de transferencia de calor que usualmente se obtienen. En el presente trabajo se realizó el diseño de un intercambiador de calor de serpentín para llevar a cabo el enfriamiento de una corriente de acetona líquida. El equipo tendrá un coeficiente global de transferencia de calor de 23,88 kcal/h.m2.ºC, un área de transferencia de calor de 6,60 m2, un número real de vueltas de serpentín igual a 53 y una altura de 2,58 m. Tanto la corriente de acetona como la de agua no sobrepasan la caída de presión máxima establecida por el proceso. También se determinó la influencia que presenta el incremento de tanto el caudal de alimentación como la temperatura de entrada de la acetona sobre cuatro parámetros de diseño del intercambiador de calor de serpentín: coeficiente global de transferencia de calor, área de transferencia de calor, número real ...

calculo de intercambiador de calor, trampa de vapor y agitador.

Extensionismo, Innovación y Transferencia Tecnológica, 2019

Este trabajo se realizó con el objeto de describir los resultados que se obtuvieron a partir de un Test de Respuestas Térmicas (TRT), en el cual se determinaron los valores de la conductividad térmica efectiva del subsuelo Aeff, y la resistencia térmica Rb, correspondiente a un sistema horizontal de intercambiador particular de calor, realizado en la provincia de San Luis-Argentina. Este ensayo se basó en el modelo de la fuente de línea infinita de kelvin (ILS), de transferencia de calor por conducción térmica. Cuya solución se obtuvo por el método gráfico de la pendiente. A partir de ellos es posible diseñar un sistema de calefacción y refrigeración en edificios de bombas de calor acopladas al subsuelo, con un eventual ahorro energético y por ende disminución de la producción de dióxido de carbono.

Revista Ingenieria Engineering Research, 2013

1997

مجلة الدراسات العربية

West Cork Colonial connections, 2024

I was reading Dr. Jane Ohlmeyer, book on Ireland and empire. Following the book and lecture on the British acquisition of Bombay I started looking at my notes on those with a West Cork background who had colonial experience. I was surprised by the number, military, medical, engineering, legal and religious. I had not realised that forfeit Irish Land as well as producing revenue was used to give collateral security to fund slavery and sugar and tobacco enterprises. It seems that many of the grantees of Irish Land were associated with London networks such as the Thompson family heavily involved in the East India Company. Later in the end of the 17th century they were also probably involved in the Hollow Blade Company, a consortium of London merchants who financed Parliament in its war against the English King and surprise surprise they were repaid in grants of Irish confiscated land. In the same book she described in forensic detail the Irish involvement of both Irish Catholics and Protestants in the slave trade and tobacco and sugar plantations. Ireland did not have colonies but was in the peculiar position of both being a colony and Irish people both Catholic and Protestant of all classes being complicit in slavery. This was not just with the English but with all colonial powers. Dr. Ohlmeyer cites a number of examples, the Danes had a small colony in the West Indies but no commercial network to sell the sugar from the slave plantations. Apparently their Lutheran religion proved no barriers to using Irish Catholic merchant networks on the Continent to sell their sugar. The Irish Catholic Caroll family had extensive plantation in Maryland and slaves. Charles Carroll of the family signed the American Declaration of Independence. Richard Boyle the Great Earl of Cork acquired much of the land granted to Phane Beecher around Bandon. The iron from his works were used to bribe African Chiefs to sell their own people into slavery. The McCalmont family of Co. Derry had extensive plantations in Barbados and multiple slaves. when slavery was abolished. From the compensation they received they invested in West London real estate and initially leased Mount Juliet in Co. Kilkenny from the Butler family eventually acquired it outright. The Munster ports ( like Bristol ) were heavily involved in the Atlantic 'Triangular Trade' and that was explicitly tied into securing and transporting slaves, and dealing in the products that then came from their work....cotton, indigo, rice, sugar and molasses etc. Of course Munster butter, bacon and beef ( the Provisions Trade) partly went to feed those enslaved too. Behind all were the investments, security on loans and profits coming back. The big houses, fine streets, public buildings and squares didn't only come from Irish rents! There is no getting away from widespread complicity. Dr. Ohlmeyer makes the point that work on the colonial archives of The Netherlands, France, Portugal and Spain has only begun and it is probable that many more Irish Connections will surface.