Energy analysis and refurbishment strategy for Zagreb University buildings: Former Faculty of Technology in Zagreb by Alfred Albini

In the year 2012 the University of Zagreb started the process of energy audits and energy certification of all university buildings with the intent to improve their energy performance. As a property owner, the University of Zagreb encompasses approximately 130 buildings (465,000 m2). The first phase of this research project involves the audit of 23 faculty buildings, which make up 30% of all faculty buildings area belonging to the university. One of the largest buildings, audited in the first phase, is the building of the former Faculty of Technology in Zagreb built from 1958 to 1964 and designed by the esteemed 20th century Croatian architect Alfred Albini. This classic work is the last of Albini's accomplishments and is a protected cultural heritage monument. Today the building belongs to the Faculty of Food Technology and Biotechnology and the Faculty of Mining, Geology and Petroleum Engineering. The paper presents results of the energy audit and energy certification of Albini's modern architecture building and determines the energy balance in contemporary usage. The paper also suggests possible energy efficient improvement measures and profitability calculations.