A SIMPLIFIED DECISION MAKING APPROACH FOR THE ENERGY RENOVATION OF BUILDINGS: THE CASE OF THE DADIA FOREST HOTEL SETTLEMENT

摘要

Settlements in forest areas are subject to restrictions and rules that differ quite significantly from those of ^regular^ buildings. The case study considered in this paper is of a settlement consisting of the administration building, a traditional timber restaurant and an ecotourism hotel situated in Dadia protected wildlife forest, in Greece. The bioclimatic renovation of the settlement in order to reduce energy consumption relies on the collection of climatic data and of data on the building’s performance, which depend on in-situ measurements. Low cost instruments were used to measure climatic parameters (air temperature, relevant humidity, solar radiation, wind speed and direction) in the area.Small scale business are lacking adequate funds and specialized scientists. Furthermore, due to economic crisis they cannot attract managers to undertake a formal decision making process. The methodology used provides a simplified approach of decision making that can be applied in building renovation linked to the improvement of energy performance of ecotourism hotel. These actions are based on bioclimatic design techniques and green building concept methods that have been successfully applied in practice in Greece providing a combination of cost effectiveness and optimum energy consumption outcome in compliance to European and national directives actions against climate change.The results revealed a low annual average wind velocity, of 1.90 m/s, an annual monthly average solar insolation of 150 W/m2, an annual temperature range of -3.1 to 36.3 °C and of relevant humidity from 20.6 to 100%. The proposed bioclimatic renovation actions focused on the alteration of the HVAC systems proposing the use of biomass for heating, installation of sun thermal systems for hot water and ceiling cooling fans, combined with passive design measures, such as, the enhancement of insulation, the replacement of old windows and exploitation of natural ventilation.