Energy Efficiency in Buildings - Essay Example

In order to assess energy efficiency in buildings, the study of the correlation between construction and energy consumption is critical. This involves the study of lightweight and heavyweight construction in conjunction with the strategies and techniques that are used for cooling, heating, and ventilation in order to reduce energy consumption. Since the effectiveness of the above strategies is related to the thermal mass of the building, the selection of the construction type is crucial. Considering that each type of construction has advantages and disadvantages in terms of energy efficiency, it is difficult to indicate which type of construction is likely to be more effective. Nevertheless, energy efficiency may be achievable when the advantages of both types of construction are exploited.  

It is well known that almost half of the delivered energy is being used by buildings (Bellew, 2000). Energy is consumed in buildings for space and water heating, lighting, ventilation, air conditioning systems, and general electrical services (Nicholls, 2002). In order to meet the above description, which is necessary both for survival and adequate levels of comfort it is important to consider the type of construction that consumes energy efficiently. In addition to this, the aim of this paper is to assess the methods used in each type of construction - lightweight or heavyweight- in order to provide efficient energy performance in conjunction with comfort in buildings.

Energy-efficient buildings are characterized by maximum utilization of natural means that result in minimized energy demand for heating, ventilation, cooling, and lighting (Goulding & Lewis, 1994). According to this, methods such as natural ventilation, passive cooling, daylighting, and effective use of external (solar) and internal heat gains are the main natural means that define energy-efficient buildings. It is also important to mention that, energy efficiency is specified by the effective use of natural means on the fabric of the building.