This paper presents a study of solar chimneysusing a Phase Change Material (PCM)integrated into the heat absorber of the solarchimney. Solar chimneys have recently beenused as natural ventilation devices in buildingsin order to improve the quality of indoor airand provide a comfortable environment for theinhabitants. The advantage of a solar chimneyis that it depends on solar energy rather thanelectricity for generating ventilation. However,it is unstable as a ventilation system since itsventilation rate is directly affected by the solarradiation.

The case study of a nursery school of Bologna isa pilot example of how hybrid ventilationsystems can be embedded in architecturallysignificant buildings. This paper hasinvestigated the operating condition of thispeculiar design to make sure that designhypothesis were accomplished. To do this, afteran ovewiew of local climatic conditions andsensors recent data, a CFD simulation has beenmade to compare theoretical and real behavior.

On-site air flow measurements of domesticventilation systems with using funnel type airflow measurement instrument which isgenerally used in Japan, has been reported themeasurement difficulties due to the terminaldevices' installed location, the existence offurniture in the vicinity or skill of the measurer.Hence investigations on the measurementmethod, which has lesser influences of thedisturbance, have been needed. Therefore, thisstudy compares on-site air flow measurementwith funnel method and pressure differencemethod which is considered as on of thesolution.

The combined solar thermal and electricdesiccant cooling system is designed, fabricated,assembled and installed in the Laboratory ofBuilding Environmental Engineering of TohokuUniversity. The performance of the combinedsystem was observed and calculated. Theperformance of the whole system, thermalenergy system and desiccant cooling system ispresented in Part I of this paper.

An island hood, which is often installed in anisland kitchen, is an exhaust range hoodmounted on a ceiling independently. Thecapture efficiency of the island hood is obtainedby experiment and CFD analysis. Examinedparameters are heat input, exhaust airflow rate,mounting height of the hood, and withlwithout abaffle plate. The Experimental results indicatethat the effect of the baffle plate is achieved inthe case of large exhaust airflow rate or smallheat input. Results of CFD analysis are higherthan that of the experiment in the all cases.

Indoor air concentration is mainly affected bythe emission rate of contaminants frommaterials and the ventilation rate. Therefore, theappropriate selection of materials andventilation rate is an important factor for indoorair quality. The purpose of this study is topropose a method for the selection of materialsand to determine an appropriate ventilation ratethat can maintain the recommended guidelineconcentration with minimum cost.

In commercial ltitchen, a large amount ofheat and moisture as the effluence need to beremoved. Therefore, a large ventilation rate isneeded and energy consumption can be large incommercial kitchen. To improve kitchencondition, supply eficient oxygen and save theenergy, low radiation cooking equipments withconcentrated exhaust were developed. Thispaper summarizes laboratory investigation intothe effect of low radiation cooking equipmentwith concentrated exhaust on coimiercialltitchen condition.

TII this study the influence of temperature of thesupplied air of a personalized ventilation systemon energy need has been investigated by meansof simulations with IDA-ICE software. GenOptsoftware was used to determine the optimalsupply air temperature. The simulated officeroom was located in a cold climate. The resultsreveal that the temperature of air supplied bypersonalized ventilation and its control strategyhave a marked influence on energyconsumption.

A numerical simulation is used to evaluate theefficiency of a multi-layer rack composed ofphase change material (PCM) sheets each. Thebuilding, object of this study, is actually underconstruction in Lyon and will be monitored. 10of these racks are installed in the crawl space ofthe building. A fan is forcing fresh air to passthrough the crawl space and then through themulti-layer racks. Then, this air is used in thebuilding ventilation system, depending on itstemperature. The software TRNSYS is used tosimulate the behaviour of the building equippedwith racks.

Environmental degradation, depletingconventional energy resources, and explodingworld population are indeed serious issues.Development of clean energy resources togetherwith clean technologies for human comfort is awonderful hunian creativity. This paper presentsa developed system of combined solar thermaland electric desiccant cooling system. The totalperformance of the whole system as presentedshows the thermal energy supplied to the system,the thermal energy transferred to the desiccantcooling system, and the performance of thedesiccant cooling system.