Thermal simulation studies of a low energy university building in Australia

A key criterion by which any building will be judged when its environmental impact is assessed is its thermal performance. This paper describes the simulation of an office module in a three-storey university building in south eastern Australia. The module, located at the north-west corner of the top floor of the building, was chosen because it is likely to have the highest cooling load - a primary concern of energy conscious designers of commercial buildings for most parts of Australia.

In the paper, the initial key assumptions are stated, together with a description of a "reference" or base case, against which improvements in thermal performance were measured. The simulation process identified the major influences on thermal performance. This enabled changes in materials and construction, as well as basic design concepts to be evaluated. Features incorporated into the base case such as a metal roof and glazed walkway were found to have adverse influence on energy consumption, and were consequently rejected in preference for an improved design which included a hypocaust slab system on the roof of the office module. The final design was predicted to reduce the annual energy consumption for heating and cooling by 72% and 76% respectively.

La performance thermique est l'un des critegraveres cleacutes de l'eacutevaluation environnementale de tout bacirctiment. Cet article deacutecrit la simulation d'un module de bureau appartenant agrave un immeuble de trois eacutetages d'une universiteacute du sud-est de l'Australie. Ce module, situeacute agrave l'angle nord-ouest de l'eacutetage supeacuterieur du bacirctiment a eacuteteacute choisi car c'eacutetait lui qui, vraisemblablement, avait la charge de refroidissement la plus eacuteleveacutee, ce qui est une preacuteoccupation majeure des concepteurs conscients des problegravemes d'eacutenergie des bacirctiments commerciaux dans la plus grande partie du pays. Le processus de simulation a fait apparaicirctre trois influences principales sur la performance thermique par rapport agrave un cas de base. Cela a permis d'eacutevaluer les modifications apporteacutees aux mateacuteriaux et agrave la construction ainsi qu'aux avant-projets. Les caracteacuteristiques inteacutegreacutees dans le cas de base comme le toit meacutetallique et la passerelle vitreacutee avaient une influence neacutefaste sur la consommation d'eacutenergie et ont donc eacuteteacute rejeteacutees au beacuteneacutefice d'un concept ameacutelioreacute qui comprenait une dalle de type hypocauste sur le toit du module de bureau. Le concept final devrait reacuteduire la consommation annuelle d'eacutenergie pour le chauffage et le refroidissement de 72 % et 76 % respectivement, ce qui donne une ideacutee de la valeur ajouteacutee au processus de production agrave partir de proceacutedures avanceacutees de modeacutelisation et de simulation.

Legal pluralism and progressive constitutionalism: An introduction to the South African challenge for post-national governace

The aim of this article is to contribute to the current academic debate on pluralistmechanisms of post-national governance as a particular type of ‘stateless law’. Moreprecisely, this article is conceived as an introduction to aid further research on the shape(and extent) that post-national governance may eventually assume (and reach) in SouthAfrica. Attention is, therefore, paid to legal pluralism as a key factor of pluralist settings ofpost-national government. An overview of the essence and features of post-nationalgovernance is provided, and a brief comparison is made between hard hierarchical andsoft-networked forms of governance. In pursuing the suggested roadmap, reference is madeto the current European landscape on post-national governance, which is ontologicallyinevitable in discussing the essence, structure, aims, challenges and limitations ofpost-national governance. Moreover, the necessity of adopting a comparative modusinvestigandi is due to the circumstance that although South Africa and the EuropeanUnion (EU) share important elements (e.g., legal pluralism, financial instability andfuture common challenges), South Africa has an extremely progressive constitution — aresult that the EU has been unable to achieve formally. Thus, while explaining whySouth Africa may represent fertile ground for such an architecture of governance, this articlediscusses why the South African Constitution may be a ‘value add’ that may help post-national governance avoid the difficulties thus far encountered on the Europeancontinent.