AN EXPERIMENTAL STUDY OF THE ENVIRONMENTAL PERFORMANCE OF THE AUTOMATED BLIND IN SUMMER

Blinds are used widely in numerous buildings to conserve energy and provide for occupants’ comfort in the perimeter zone. But manual or motorized blinds are limited in their ability to reduce energy consumption because occupants must control blinds themse

ENERGY CONSUMPTION OF RESIDENTIAL BUILDINGS IN KANSAI REGION, JAPAN

To examine present situation of energy consumption, an extensive survey was carried out as a projectof Architectural Institute of Japan (AIJ). More than 80 houses that were typical to the present Japanesehousing sector were chosen nationwide. As a part of this project, we measured the energyconsumption of 13 houses in Kansai region. The annual energy consumption in these13 houses rangesfrom 30 to 70 GJ from April 2003 to March 2004.

FIELD SURVEY ON THE ENERGY CONSUMPTION IN RESIDENTIAL BUILDINGS IN THE NIIGATA AREA

The purpose of this study is to investigate the actual conditions of the energy consumption of varioustypes of inhabited houses (e.g., wooden detached houses and condominiums) in the Niigata area. Afield survey was carried out from November 2002 to March 2005, and the energy consumption levelsfor the various uses were measured continuously. This paper describes the energy consumptions of alluses (e.g., electricity, oil, gas) in the house types.

Schools: All problem buildings?

Seven schools underwent an energy audit, evaluating the existing situation through measurement and simulation and looking to possible retrofit measures and their economic feasibility with the energy performance tool (EPB) as an instrument. The results are troubling. The seven schools audited are all problem buildings: hardly any insulation, windows quite air leaky, central heating systems poorly designed and no usage of an on purpose installed ventilation system.

Assessment of Quality of Built Environment. A Case Study in North of Italy

The paper describes results of a Preliminary Study for the Plan of Quality of Living (PSPQL) of a townin the hinterland of Milan, conducted by an interdisciplinary group of researchers, involving alsofacilitators, town councillors, administrators, technicians and citizens. Main aim of the work is theevaluation of the most sustainable actions to be taken for improving conditions of living. A bottom-upand participative approach has been followed.

ENERGY AUDITS IN DWELLING BUILDINGS IN LATVIA. DATA ANALYSIS

Experience of energy auditing of residential buildings in Latvia discovers problems with discrepancy of data measured and calculated. Analysis of dynamic changes of data presents factors, which influence results of energy audits and proposals for energy efficiency measure. Paper presents analysis of influence of solar radiation and modelling of solar factor for control of heat supply.

INTEGRATED SIMULATION OF HEAT DEMAND AND AIR EXCHANGE IN A MULTIFAMILY BUILDING

The paper presents the results of the measurements and integrated simulation of the energy demand and air exchange in one of the flats located in a 5-storey building located in urban area. The experiment was carried out during 3 weeks of March. The total energy consumption necessary for flat heating was measured continuously (at a 2 sec time step). After measurements were finished the energy demand and ventilating air flows were calculated assuming the same weather data variation as measured during the experiment, using the ESP-r software.

Evaluation of building energy consumption based on fuzzy logic and neural networks applications

The authors have created a Neural-Fuzzy Assistant which acts as a Decision Support System and helps to perform quickly and easily the estimations of office building energy consumption. The Neural-Fuzzy Assistant presented in this paper allows the user to determine the impact of eleven building parameters on the electrical annual and monthly energy consumption, annual and monthly maximum electrical demand and cooling and heating annual consumption and demand.

Stimulating better envelope and ductwork airtightness with the EnergyPerformance of Buildings Directive

The Energy Performance of Buildings Directivementions that each member states' energyperformance (EP) calculation methodology mayinclude envelope airtightness. In fact, manymember states have included envelopeairtightness in their EP calculation method.Many countries have also specific requirementsfor ductwork airtightness. However, they seemto be unequally successful in achieving a markettransformation. This paper describes themechanisms that have been used in somecountries, with a special focus on success storieswhich could inspire other member states.

Demand Controlled Ventilation. A Detailed Study of Energy Usage by Simulation

Detailed mathematical models of VAV equipment and subsystems have been developed and used tocompose larger DCV systems with a large degree of detail. The models and systems take intoaccount both flow/pressure distribution and thermal/contaminant dynamics. The models have beenvalidated against measurements. A number of detailed simulation cases have been conducted. Theresults show that energy usage depends strongly depends on occupancy, flow rates, chosen setpoints as well as the outdoor temperature.

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