The University of Nottingham Ningbo China

About: The University of Nottingham Ningbo China is a education organization based out in Ningbo, Zhejiang, China. It is known for research contribution in the topics: Population & China. The organization has 7491 authors who have published 7153 publications receiving 83555 citations.

Review of solid–liquid phase change materials and their encapsulation technologies

Abstract: Various types of solid–liquid phase change materials (PCMs) have been reviewed for thermal energy storage applications. The review has shown that organic solid–liquid PCMs have much more advantages and capabilities than inorganic PCMs but do possess low thermal conductivity and density as well as being flammable. Inorganic PCMs possess higher heat storage capacities and conductivities, cheaper and readily available as well as being non-flammable, but do experience supercooling and phase segregation problems during phase change process. The review has also shown that eutectic PCMs have unique advantage since their melting points can be adjusted. In addition, they have relatively high thermal conductivity and density but they possess low latent and specific heat capacities. Encapsulation technologies and shell materials have also been examined and limitations established. The morphology of particles was identified as a key influencing factor on the thermal and chemical stability and the mechanical strength of encapsulated PCMs. In general, in-situ polymerization method appears to offer the best technological approach in terms of encapsulation efficiency and structural integrity of core material. There is however the need for the development of enhancement methods and standardization of testing procedures for microencapsulated PCMs.

Precarity as a Political Concept, or, Fordism as Exception:

Abstract: In 2003, the concept of precarity emerged as the central organizing platform for a series of social struggles that would spread across the space of Europe. Four years later, almost as suddenly as the precarity movement appeared, so it would enter into crisis. To understand precarity as a political concept it is necessary to go beyond economistic approaches that see social conditions as determined by the mode of production. Such a move requires us to see Fordism as exception and precarity as the norm. The political concept and practice of translation enables us to frame the precarity of creative labour in a broader historical and geographical perspective, shedding light on its contestation and relation to the concept of the common. Our interest is in the potential for novel forms of connection, subjectivization and political organization. Such processes of translation are themselves inherently precarious, transborder undertakings.