Abstract
Designed in Brutalism style by architect Andrew Renton, Tower Building has 17 floors for academic and lecturers’ office function. As the highest point in University of Nottingham, this tower has been built for almost five decades. The aim of this project is to propose the tower retrofit from current function to accommodation purpose. Improvement in terms of function and building energy performance by applying sustainable building technologies are the objectives of the retrofit. The advanced plan of building retrofit was proposed after assessing the current building performance and determined the problems. The proposed building design was based on building performance simulation result, literature, and precedent studies. Thereafter, several technologies and design ideas were applied for further investigation, to examine how is the strategies works in the building retrofit. Integrated double skin façade with BIPV, bio composite material for internal wall, double low-e glass for external wall, as well as green lung to improve natural ventilation and create public space were proposed for the building.
Highlights
Sustainable building design can be approached in two ways, reducing energy consumption and supplying energy by renewables
From the literature reviews and precedent studies, the technologies and ideas that would be applied in the Tower building are : 1) Integrated double skin façade with BIPV 2) Bio composite material for internal wall 3) Double low-e glass for external wall 4) Green lung to improve natural ventilation and create public space
From the simulation in the Ecotect, it was revealed that the current Tower Building with office function requires a total of 35.4 MWh energy for heating from October to July
Summary
Sustainable building design can be approached in two ways, reducing energy consumption and supplying energy by renewables. In a comprehensive implementation of a sustainable building, the approaches are applied from the early phase of a project. Construction phase is the most energy intensive [1]. Due to energy intensive characteristic of a new construction process, retrofit seems to be a prospective method. A sustainable retrofit could span the lifetime of a building, give a better economic value for the owner, and decrease the lifecycle cost of the building. Retrofit makes building more energy efficient [3]. The owner or developer should systematically analyze the possible results of a retrofit project, to make sure that the project is really feasible [6]. It is worth noting that the decision has a large number of possibilities and that it is a multi-objective problems [7]
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