Listar por tema "R22"
Mostrando ítems 1-6 de 6
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El consumo de productos lácteos en España, 1950-2010
Sociedad Española de Historia Agraria (2012-06)This paper, a case study of the great transformations undergone by food consumption patterns in Spain since c. 1950, reconstructs the evolution of the consumption of milk and milk derivatives. The paper homogenizes ... -
Defensa social en tiempos de peligro. La clase terrateniente chilena y la cuestión agraria (1936-1940).
Sociedad Española de Historia Agraria (SEHA) (2014-12)El artículo expone el comportamiento político de la clase terrateniente chilena durante los gobiernos del derechista Arturo Alessandri (1934-38) y del radical-frentista Pedro Aguirre (1938-41). En ese período surgió un ... -
Energy influence of the IHX with R22 drop-in and long-term substitutes in refrigeration plants
Elsevier (2013-01-10)This work focuses on the investigation of new drop-in or long-term refrigerants for low evaporating temperatures that can be used as substitutes for HCFC-22, which is gradually being phased-out. This process is already in ... -
Experimental evaluation of HCFC-22 replacement by the drop-in fluids HFC-422A and HFC-417B for low temperature refrigeration applications
Elsevier (2011-05)The Regulation CE-1005/2009 has banned the use of virgin HCFC-22 in Europe from the 31st December 2009, because it contains chlorine, although its use is allowed up to the 31st December 2014 if it is recycled. Now, ... -
HCFC-22 replacement with drop-in and retrofit HFC refrigernants ina a two-stage refrigeration plant for low temperature
Elsevier (2012)The world community has committed to eliminate the HCFC-22 refrigerant to a series of deadlines according to the agreements taken during the 19th Montreal Protocol meeting in September 2007. This phase-out, which is already ... -
Patrones de segmentación del consumo de productos lácteos en España, 1958-2006
Sociedad Española de Historia Agraria (2013-10)This article reconstructs the evolution of disparities in the consumption of dairy products in Spain from the late 1950s to the early twentyfirst century. At the start of the period, there were strong regional disparities, ...