Air-conditioned room almost adjoin non-air-conditioning zone. Generally, in thermal load calculation, we model only an air-conditioned room. Therefore, we can not calculate the thermal influence of a non-air-conditioning space. Hence, we propose the "exterior wall replacement method for a non-air-conditioning zone" as a new algorithm that takes into consideration the thermal influence of a non-air-conditioning space. We verify the accuracy of the exterior wall replacement method for a non-air-conditioning zone in a side core office using the BEST (Building Energy Simulation Tool) which takes into consideration the thermal influence of non-air-conditioning space. It is shown that the exterior wall replacement method for a non-air-conditioning zone is effective.

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Presently, Japan is just facing the shortage of electric power supply for its peak demand. As aquifers are ubiquitous in urban areas in Japan, the spread of aquifer thermal energy storage systems can be expected as the way of low-cost and high-capacity electric load leveling. In our previous paper, we reported that the distributed parameter model considering dispersion length can accurately reproduce the thermal response of injecting and pumping water from aquifers. However, a finite element method simulation software designed for aquifer thermal hydraulics spend a considerable amount of time on calculation. In addition, not only the software cost is very high but also it takes a long time to develop the skill of how to use it. Establishing a design and study methodology that is simple and inexpensive would be valuable in promoting the quick spread of aquifer thermal energy storage systems for daily use. We created a lumped parameter model for technical study at a practical level. In this paper, we report that the lumped parameter model can calculate the temperature difference of the pumped up water to within 5% of that found by the above distributed parameter model.

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In smoking areas of restaurants, smokers and nonsmokers are often seated at the same table. Under such conditions, nonsmokers are exposed to the tobacco smoke in the atmosphere. In this research, a ventilation system is studied by means of CFD simulations and experiments, with the aims of reducing a nonsmoker's exposure to tobacco smoke in restaurants. In the previous paper, the CFD simulations were conducted with various conditions. The CFD results showed that a combined system of local ventilation and displacement ventilation can improve indoor air quality more than that realized using a mixing ventilation system. This paper presents the results of the experiments and CFD simulations with a moving body. Some difference is observed between the experimental and CFD results, but both results show that a combined system of local ventilation and displacement ventilation is expected to maintain good indoor air quality. The influence of the ventilation rate and the position of smoker on the ventilation effectiveness is also examined. In addition, moving-body CFD simulations are conducted to study the disturbance due to moving human bodies. The CFD results show that the concentration of particulate matter is maintained within the allowable level even when moving bodies exist.

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