To reap the benefits of sustainability in the construction sector,it is crucial that the stakeholders involved can implement it in practice.Investigations have shown that choices made in the early phases of the buildi...To reap the benefits of sustainability in the construction sector,it is crucial that the stakeholders involved can implement it in practice.Investigations have shown that choices made in the early phases of the building process are of very great importance for the outcome and the initiatives and decisions taken by the build-ing owner are crucial.This paper presents research on Danish building practitioners’ability to make requirements for sustainability in procurement.On the basis of an action research strategy,we asked practitioners to help identify the challenges involved in requiring sustainable solutions through procurement.These included among others a lack of knowledge or experience in sustainable procurement and inter-disciplinary challenges.The research showed that practitioners are able to for-mulate specific requirements for sustainability in procurement.However the challenges found imply that a sustainable approach in procurement is not fully implemented in a Danish context.This suggests that there is a need for guidance in the area,if the practitioners are to move from good intentions to making more specific requirements for sustainability in procurement.展开更多
This paper addresses the difficulties in pinpointing reasons for unexpectedly high energy consumption in construction, and in low-energy houses especially. Statistical methods are applied to improve the insight into t...This paper addresses the difficulties in pinpointing reasons for unexpectedly high energy consumption in construction, and in low-energy houses especially. Statistical methods are applied to improve the insight into the energy performance and heat dynamics of a building based on consumption records and weather data. Dynamical methods separate influences from outdoor temperature, solar radiation, and wind on the energy consumption in the building. The studied building is a low-energy house in Sisimiut, GreenLand. Weather conditions like large temperature differences between indoors and outdoors throughout tong winters, strong winds, and very different circumstances regarding solar radiation compared to areas where Low-energy houses are usually built, make the Location very interesting for modeling and testing purposes. In 2011 new measurement equipment was installed in the house, which will be used to develop more detailed models of the heat dynamics and energy performance in relation to different meteoroLogicaL variables, heating systems, and user behavior. This type of models is known as a graybox model and is been introduced in this paper.展开更多
文摘To reap the benefits of sustainability in the construction sector,it is crucial that the stakeholders involved can implement it in practice.Investigations have shown that choices made in the early phases of the building process are of very great importance for the outcome and the initiatives and decisions taken by the build-ing owner are crucial.This paper presents research on Danish building practitioners’ability to make requirements for sustainability in procurement.On the basis of an action research strategy,we asked practitioners to help identify the challenges involved in requiring sustainable solutions through procurement.These included among others a lack of knowledge or experience in sustainable procurement and inter-disciplinary challenges.The research showed that practitioners are able to for-mulate specific requirements for sustainability in procurement.However the challenges found imply that a sustainable approach in procurement is not fully implemented in a Danish context.This suggests that there is a need for guidance in the area,if the practitioners are to move from good intentions to making more specific requirements for sustainability in procurement.
文摘This paper addresses the difficulties in pinpointing reasons for unexpectedly high energy consumption in construction, and in low-energy houses especially. Statistical methods are applied to improve the insight into the energy performance and heat dynamics of a building based on consumption records and weather data. Dynamical methods separate influences from outdoor temperature, solar radiation, and wind on the energy consumption in the building. The studied building is a low-energy house in Sisimiut, GreenLand. Weather conditions like large temperature differences between indoors and outdoors throughout tong winters, strong winds, and very different circumstances regarding solar radiation compared to areas where Low-energy houses are usually built, make the Location very interesting for modeling and testing purposes. In 2011 new measurement equipment was installed in the house, which will be used to develop more detailed models of the heat dynamics and energy performance in relation to different meteoroLogicaL variables, heating systems, and user behavior. This type of models is known as a graybox model and is been introduced in this paper.
