A Pareto-based multi-objective optimization algorithm to design energy-efficient shading devices

Abstract

h i g h l i g h t sWe present a multi-objective optimization algorithm for shading design. We combine Harmony search and Pareto-based procedures. Thermal and daylighting performances of external shading were considered. We applied the optimization process to a residential social housing in Madrid. t r a c tIn this paper we address the problem of designing new energy-efficient static daylight devices that will surround the external windows of a residential building in Madrid. Shading devices can in fact largely influence solar gains in a building and improve thermal and lighting comforts by selectively intercepting the solar radiation and by reducing the undesirable glare. A proper shading device can therefore significantly increase the thermal performance of a building by reducing its energy demand in different climate conditions. In order to identify the set of optimal shading devices that allow a low energy consumption of the dwelling while maintaining high levels of thermal and lighting comfort for the inhabitants we derive a multi-objective optimization methodology based on Harmony Search and Pareto front approaches. The results show that the multi-objective approach here proposed is an effective procedure in designing energy efficient shading devices when a large set of conflicting objectives characterizes the performance of the proposed solutions.

Exploring multi-objective trade-offs in the design space of a waste heat recovery system

“…Because of this, they have become increasingly popular in the design of engineering systems [3], [4], [5], [6], including the optimisation of energy systems. Examples are described in [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17].…”

“…A common method of visualising the results is to use a scatter plot, or decision maps, as shown in [14], [10], [13], but in general these can only show three objectives or parameters at once, which is limiting. Furthermore, the correlation between parameter and objective values are not explicitly shown, and in practice, analysis of the correlation is only applied to a selected few solutions, as depicted in [7], [8], [9].…”

A Novel Hybrid Algorithm for Solving Multiobjective Optimization Problems with Engineering Applications

“…Multiobjective optimization problems (MOPs) are encountered in many fields, such as energy systems [1,2], management [3], structural optimum design [4,5], and scheduling [6,7]. Generally, many problems can be modeled as multiobjective optimization problems, in which multiple conflicting objectives are to be optimized simultaneously.…”

The Impact of Iwan as a Traditional Shading Device on the Building Energy Consumption

“…These schemes can be found in building elements like Windcatchers [23], Shovadans [24], Courtyards [25] and Domed roofs [26] as well as in spaces like cisterns [27] and ice-pits [28]; most of which have been used for cooling purposes in hot-arid regions [29]. Shading against solar rays plays a significant role in reducing the cooling loads of a building [30,31]. The thermal performance of a building with a shading model developed for its windows was studied in [32].…”