ENERGY EFFICIENCY IN THE RESIDENTIAL SECTOR A CASE – STUDY IN AN URBAN HISTORICAL CENTRE

D. Coelho(1)(3), A. Gomes Martins(2)(3) and A. Gomes(2)(3)

(1)     ISEC - Instituto Superior de Engenharia de Coimbra,

(2)     DEE - Departamento de Engenharia Electrotécnica, Faculdade de Ciências e Tecnologia, Universidade de Coimbra;

(3)     INESC - Instituto de Engenharia de Sistemas e Computadores, Núcleo de Coimbra

ISEC – Quinta da Nora

3030 COIMBRA - PORTUGAL

Tel. 351.39.790200           Fax. 351.39.790270

e-mail: dcoelho@sun.isec.pt

 

ABSTRACT: The paper deals with the improvement of energy efficiency in the residential sector and is a synthesis of some of the aspects of a project carried out at an urban historical centre aiming at the assessment of Demand-Side Management (DSM) potential. It starts with a general perspective of the problems associated with efficient use of energy, namely with the barriers to the implementation of specific measures related with the integration of renewable energies in ancient urban areas and to the adoption of efficient electricity technologies. It then presents the methodology used for assessing the potential for energy efficiency improvement in the residential sector of the historical centre of an old Portuguese town. It presents the main prospective items: a) characterization of the present situation, namely as regards to energy consumption patterns of electric end-use equipment and to consumers attitudes towards rational use of energy (RUE); b) identification and qualification of RUE measures that can be adopted. c) an evaluation of the impact of some of the measures identified as having a high potential impact: technology replacement for interior lighting, replacement of refrigerators by high efficiency models and load control of domestic electric water heaters.