Abstract:The contribution of embodied energy (EE) and greenhouse gas emissions to building materials and structures has been recognized as significant, especially for nearly-zero energy-efficient buildings. The aim of this paper is to evaluate the composition of non-transparent structures of building envelopes from energy and environmental perspectives using the life-cycle assessment method. The study assesses environmental indicators such as EE from non-renewable resources and CO2eq and SO2eq emissions from proposed assemblies of building structures for nearly-zero energy wooden houses. Material compositions are also calculated in terms of selected thermal-physical aspects (U-value, phase shift of thermal oscillation, relaxation time) to ensure the reduction of energy consumption during building operation. All results are compared using a multi-dimensional evaluation approach through mathematical methods. The multi-criteria decision analysis demonstrates that material optimization of building structures is possible to ensure a marked reduction of the energy consumption and carbon footprint of buildings.
The article presents the monitoring of physical aspects of choices hall objects before reconstruction, which are in poor technical condition. The content of this contribution is the comparison of energy savings in selected hall object, which can be achieved by the refurbishment of envelope structures as against the present state. The article is trying to solve the problem of alternative creating envelope structures for an industrial hall depending on the activity performed inside respective plants, its reconstruction in relation to year energy consumption for heating, taking into account necessary thermal and humidity microclimate of a real workshop.
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