Air Quality at the height of skyscraper has not almost been cleared yet. Upper part of dwellings of tallbuildings at down town might intake inadequate outdoor air.

The purpose of this investigation is to know the long term characteristics of VOC concentrations inhouses built before the building code in 2003 and to know the need of the countermeasures in thehouses were already built for example the improvement of the living habit, ventilation and buildingmaterials. The concentrations of VOCs were measured in these houses from 2000 to 2005. The resultsshowed that the concentration of formaldehyde decreased in the first year. After that the decline of theconcentration became invisible and the concentration changed only with the temperature.

Air conditioning in offices has become current practice in North Western Europe. Main reasons are thehigh internal loads and solar gains. That move away from the heated, naturally ventilated cellularoffice increased comfort complaints.Two cases are presented, confronting enquiry results with measurements. In both, the enquiries gavea number of dissatisfied at the noted mean vote much higher than the standard PMV/PPD curvesuggests. Measurements in turn showed that only in one of the two case complaints could beexpected.

The EPBD requires EU Member States to have legislation on Energy Performance of Buildings. Tosupport this a mandate was given to CEN (the European Standard Organisation) to produce thenecessary standards to support the implementation of the EPBD in the EU Member States. Thispaper gives an overview of the standards as they have been developed under the EU Mandate toCEN. It also gives some information on the interrelation of these standards. Also some information onCEN standardisation work is given.

The investigation was conducted to investigate the relationship between thermal conditions andindoor air quality during summer in a new unit-type nursing home. Almost all occupants in the nursinghome spend the daytime in the nursing homes common space area. We set out to examine how theindoor environment changes and what influence the thermal environment has on odor, and thereforetook readings in the common space for room temperature, relative humidity, CO2 concentration andodor levels.

In this paper, the experiment for moisture buffering and effect of ventilation rate and volume rate of thehygrothermal materials is described. The objective of the experiment is to make clear the relationshipsbetween the moisture buffering effect and, the ventilation and volume rates of the hygrothermalmaterials. In the experiment, a layer of gypsum board as hygrothermal materials is placed on theinterior surface of the test chamber (4.60 m3). This chamber is located in the climate room which cancontrol constant temperature and humidity level (20oC and 50%rh).

In Hungary from the total energy consumption of the country 30% is caused by the heating, ventilationand air conditioning systems of buildings. The energy saving and environment protection possibilities inthe building sector are permanently flared due to the development of building industry, newsub-systems and materials of buildings and HVAC systems. Exploiting the advantages of buildinginformatics and building survey systems significant reduction of the energy consumption can beobtained.

This paper describes field experiments and numerical simulations on hybrid utilization of renewableenergy and polymer electrolyte fuel cells for a residential energy system. It presents the results ofempirical testing and evaluation of hybrid utilization involving solar energy. First, field experiments wereconducted on an electric power and domestic hot water supply system that uses both solar energy andfuel cells on sunny days in Sapporo. The system achieved a 46.6% reduction in primary energyconsumption compared with conventional systems.

The purpose of this study is to develop an optical measurement method of particles on a flat surfacefor evaluating particle removal performance of air-jet by nozzles in the cleanroom. Glass beads areselected for the test aerosol and they are adhered on test surfaces of Si wafer as witness plate.Authors developed new optical measuring system using Ar laser and surface particles are measuredby the system and also a surface particle counter for Si wafer. The experimental survey is conductedfor 14 types of nozzles and 30 different conditions.

Photocatalytic oxidation (PCO) tests have been carried out for toluene adsorbed on the TiO2/ACFcatalyst in an environmental condition controlled chamber. TiO2/ACF catalyst was made andcharacterized by N2 adsorption isotherm for pore structure and scanning electron microscopy (SEM) formorphology respectively.