In order to simplify the procedure for evaluating winter building energy performances, most of existing standard and rules make reference to the building energy balance under steady state conditions.

The building sector is at present responsible for more than 40 % of the EU energy consumption. There are technologies under development, which could substantiallyimprove (up to 30 %) the energy performance of buildings, reducing the conventional energy demand in new and existing buildings and substantially contributingto reduce energy intensity, through combined measures of rational use of energy and integrationof renewable energy technologies.

Low depth geothermal energy can be efficiently used as a heat sink for building energy produced during summer.In the current work, several geometries of geothermalheat exchangers implemented in office building climatisationprojects are evaluated for their energetic performance.For all geometries, simulation models were developed and validated using the experimental data, so that parameter studies could be carried out.A main result of the performance analysis is that the ground coupled heat exchangers have excellent coefficientsof performance ranging from 20 50 as average annual ratios of co

This paper presents the results of a monitoring study carried out in the city of Adelaide, Australia, whose primaryaim was to calibrate a model capable of predicting air temperature in an urban street canyon for extended periods in a variety of weather conditions, on the basis of meteorological time series recorded at an open site exposed to the same meso-scale conditions (Erell and Williamson, 2006).

When an energy balance is calculated in accordance with DIN V 18599, an integrative approach is taken, i.e. the building carcass and the utilization of the buildings technical installationsand equipment are evaluated together,taking the interaction of these factors into consideration.In order to provide a clearer structure, the DIN V 18599 series of preliminarystandards is divided into several parts, each having a particular focus. The DIN V 18599 series of preliminary standards providesa method of calculating the overall energy balance of buildings.

The aim of the specific paper is the analysis of the efficiencyof power lines as a communication media for Building Energy Management Systems. The reason behindthis scope is the ability of power lines to be installedin existing buildings without extra wiring.Building Energy Management Systems (BEMS) constitutea part of automation systems. BEMS implement control the indoor environmental parameters while minimizingenergy consumption.

Daylighting control systems have quite high potential to reduce building’s energy consumption and peak demand. Despite this potential, reported poor performance, didn’t allow substantial increase in their installation rates. Thus during design stage, is e

This paper presents the basic parameters and energy flows of an aquifer thermal energy storage (ATES) systemcombined with reversible water/water heat pumps used for heating and cooling the new hospital Klina (Antwerp Belgium). The system is one of the first ATES projects in Belgium, and its operation is monitoredwith the aid of a DAQ system. The energy flows, primary energy consumption and CO2 emission reductionwere calculated based on DAQ loggings of the first 3 years of systems operation.

This paper describes ongoing energy benchmarks studies of double-skin façade buildings. A comparison between energy performance of these actual buildings and European office buildings benchmarks is discussed. Some preliminary results are presented.

Traditional architecture while energy consumption has not been defined as today, have utilized some passive design methods by attending to the potentials of the regionand made them highlight. At hot climate such as Iran, one of the outstanding technical solution for providingventilation, both for body and structural cooling, were already used in ancient times. Furthermore, other techniques had been applied for achieving comfort and controlling it, as main target, at night, day and each season.A fundamental idea of this approach is focusing on providing zero-condition.