English

In this present study, annual exceedance probability (AEP) analysis was applied as the method forassessing wind-driven natural ventilation in a street canyon, in which the effects of wind approachingfrom each direction were comprehensively taken into account. In order to evaluate the overallventilation performance in specific domain spaces within the street canyon, local air change rate andaverage kinetic energy were employed to calculate the AEP, instead of using the commonly adoptedvelocity ratio.

Until the end of 90-ties all dwelling buildings in Latvia were equipped with mandatory natural ventilationsystems with stack effect. Nowadays in many cases in dwellings there are only exhaust mechanicalventilation but air tight windows prevent natural air intake. Such systems result in bad IAQ.

Goal of the study is the system analysis and after that the complex analysis of the renewableenergy sources and cogeneration (CHP) including fuel cells. The process of the analysis consistsseveral steps. The first one is the global managerial methods as the PEST and SWOT analysis,where there are the variants evaluated by the qualitative words methods. The second part isbased on the multicriteria evaluation by different methods of complex analysis.

High local concentrations of a pollutant can be the result of high local emission rates of the pollutant orinsufficient ventilation. Using tracer gases to map the ventilation in multi-zone buildings combined withmeasurements of the local pollutant concentration provide the means to discriminate between thesecauses.

In this paper, a new experimental method for measuring thermal conductivity and thermal partitioncoefficient for building materials is presented. The uniqueness of this method is that theaforementioned physical properties are measured for the building materials under the same conditionsas in real life. This method is based on monitoring the temperature difference across the sample andthe solution of the transient conduction equation. The proposed method and designed apparatus weretested using some building materials (i.e.

The present paper is a review on methods and technologies for air cleaning from micro organisms andviruses, which are applicable with the present HVAC practices. The advantages and the drawbacks ofair dilution, filtration (HEPA, ULPA), ultraviolet germicidal irradiation (UVGI), photocatalytic oxidation(PCO), plasmacluster ions and other technologies for air disinfection and purification is criticallyanalyzed with respect to the used today air distribution principles.

In recent years, occupants conduct various behaviors in the appurtenant dressing room, so it isimportant to know the amount of modern moisture production in the appurtenant dressing room.Investigation data showed amount of moisture production caused by the behaviors in the dressingroom did not differ between males and females, and amount of moisture production caused by washingclothes and drying clothes did differ depending on the equipment.

Experiments using human subjects have been conducted to investigate the physiological andpsychological responses to two different heating methods, i.e. floor heating and air conditioner, in ahighly insulated house. This paper describes a study on the effects of the heating methods on skintemperature changes by investigating changes in skin temperature caused by thermal conditions,sexual differences in skin temperature change, the correlation between declared scores and drops inperipheral skin temperature using the experimental results.

Houses which use only electricity are becoming popular in Japan. Electromagnetic ranges (IH range)are used in those houses. The updraft above an IH range is slower than a gas range. The requiredventilation rate is different for a gas range and an IH range. In this study, measurements of updraftvelocity and temperature distribution above the IH ranges are conducted.

Methods are needed for the evaluation of the energy performance of complete buildings and parts ofbuildings or building installations. In order to arrive at energy efficient buildings, materials and productsthat effectively contribute to the thermal performance of the building and its installations must be used.For that standards dealing with the design and evaluation of materials, components and systems playan important role.