DBPapers
DOI: 10.5593/SGEM2014/B42/S19.074

THE CLIMATIC CONDITIONS DURING SUMMER IN BULGARIA AND THEIR INFLUENCE ON COOLING DEGREE DAYS

C. Dimitrov, A. Gocheva, D. Denkova,K. Malcheva
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-16-2 / ISSN 1314-2704, June 19-25, 2014, Book 4 ,Vol. 2, 559-566 pp

ABSTRACT
Nowadays, the study of the discomfort period during the warm half-year became
especially relevant for construction and healthcare. The discomfort periods become
more and more prolonged, resulting in an increased use of air conditioners for
maintaining of comfortable and healthy microclimate. It can be expected that in the next decade the energy consumption during the summer will be progressively escalating. Since Bulgaria is deficient in own energy resources, the optimal use of all available sources of energy taking into precisely account the climatic conditions is essential for optimization of design and maintenance of buildings.
The aim of this study is to analyze the influence of climatic conditions and their
variations on the energy efficiency of buildings by means of an integrated characteristic – cooling degree days (CDD). The three largest and densely populated Bulgarian cities – Sofia, Plovdiv and Varna are explored, because of the large number of inhabitants and the significant energy consumption. The impact of contemporary climate conditions on the character of the summers in Bulgaria has been assessed using air temperature data, integrated characteristic of the discomfort period – cooling degree days (CDD) and other complex climatic parameters. Analysis of the seasonal course, interannual variability and trend in respect of air temperature, cooling degree days and some complex climatic parameters is made. The results for the last decade are compared with the normals for 30-year period (1981 – 2010). A comment for the character of the summer’s discomfort period, its interconnection with climatic conditions and their variability for the cities, situated at different climate regions on the territory of the country, is presented.

Keywords: Applied Climatology, Climate Variations, Cooling Degree Days, Climatic
Indices.