The power consumption of the booster pump is important for the power saving performance of plumbing systems, but its evaluation index has not yet been established. In this study, we analyzed measurement data of water volume and power consumption in different water supply systems before and after the water supply system in an apartment house was changed, and proposed unit water-power consumption as the index for power saving evaluation of booster pumps. Then, we evaluated the power saving performance of the water supply systems using the unit power -water consumption.

To realize Net-Zero Energy Building, the reduction of air-conditioning energies is indispensable, and reduction of outdoor air loads plays an important role in achieving this. In order to reduce outdoor air loads, a method using a cool tube is used. Thus far, extensive research on the reduction of the outdoor air loads by a cool tube has been carried out. However, compared with the surface temperature of a cool tube, the dew point temperature of the outdoor air is high in summer, and it causes dew condensation inside of the cool tube. In this case, there is the likelihood of microbial contamination. In this study, after clarifying the characteristics of the air temperature and relative humidity in cool tubes and the actual condition of bacteria and fungus contamination, the control methods of reducing the surface bacteria and fungus in cool tubes and airborne bacteria and fungus concentration at the exit of cool tubes were verified.　

The Great East Japan Earthquake (GEJE) triggered a tsunami and subsidence in the Aqua Marine Fukushima (AMF) resulting in great damage. In particular, components of infrastructure such as electricity stopped completely. The outage of infrastructure paralyzed the functioning of AMF. The first step to reopening of AMF was the restoration of infrastructure.　This paper outlines AMF infrastructure, the actual from the GEJE and the process of recovery. One of the major purpose of this paper is to disclose the actual situation of AMF damage from the GEJE and the recovery process, and to include these experiences to model for a Business Continuity Planning in aquarium facilities.

In recent years, there has been an urgent need to introduce control methods suitable for various air conditioning systems for the purpose of energy saving in office buildings in Japan. Above all, with the introduction of energy management systems and the progress of IoT (Internet of Things), occurrence of disturbances such as internal load and air supply from adjacent indoor units can be detected in real time and Feed-Forward (FF) control that is effective when the disturbance is known has attracted attention. The FF control is a control method in which an appropriate correction amount is added as soon as the disturbance is detected, and before its influence appears on the control target, and control errors due to disturbance are suppressed by combining conventional feedback control and FF control. In this study, we propose a hybrid control method (PID+FF control) incorporating FF control that suppresses disturbances such as internal load and air supply from adjacent indoor units by the coupled analysis of CFD with detailed reproduction of air conditioning system model and general-purpose control simulator that be possible to study various control methods such as modern control, and show the effectiveness through comparison with conventional PID control. In PID control and PID+FF control, a case study of pre-verification of disturbance suppression effect using various disturbances and actual operation taking into consideration the influence of air supply from the adjacent indoor unit in addition to all the disturbances were conducted. The following results were obtained: (1) From the pre-verification results of the suppression effect in various disturbances, among the five assumed disturbances, PID + FF control showed better suppression effect of disturbance with three disturbances of human body, OA equipment and solar radiation. (2) From the result of assuming the actual operation, suppression of overshoot in the time zone of 12:00, 15:00, and 18:00 where the load fluctuation is particularly large was confirmed in PID + FF control.