In Part 1, the remote monitoring system, survey and analysis data were outlined. The conditions of giving alarms were also presented under the following classifications: 1) Application of building, 2) Scale of building, 3) Month, date and time, 4) Cause and kind of facility. So in this paper, the concept of initial failures is shown, and the evaluation method for initial failures is proposed. From the field data in Part 1, we analyse initial failures by our evaluation method. The result obtained shows the conditions of giving alarms, and cause kind of facility for initial failures. These results are our proposal, treatments and verification of initial failures on the operation of building facilities by the remote monitoring system.

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If the risk level of the meteorological conditions so called as TAC to design air-conditioning heating and cooling peak load is replaced by the risk level of room environmental conditions, the % of TAC level to be adopted varies with the thermal characteristics of building materials and/or operation modes. The present study considers office spaces and shows how the TAC level varies and gives the data how to select the level for a certain kind of combinations of factors which have statistically significant effects on the environment based TAC values. The design of experiment method has been applied to identify significant factors using L-81 orthogonal alley for simulation study. Generally speaking, 5% to 15% of meteorological condition based TAC correspond to 5% of environmental condition based TAC and energy efficient factors and/or levels tend to shift the latter one towards the risky side.

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In the field of the water works, it is a problem that the water pressure of the distribution pipe in circumference of the large scale buildings changes largely. This due to the volume of receiving tank which was settled for appeasing the situation, and how to operate the water supply system. This report describes the effects of the distributing pipe's by the investigation and simulation for optimum operation of the water supply system in the buildings, for the basis of the examination of these situation's cause and counterplan. The results show that the large effects are the volume of receiving tank and the decision's way of service pipe's diameter.

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Both a Pitot tube and a Pitot-static tube whose nose tubes are longer than those defined in JIS are treated in this study. Blockage effects are well known to be caused by inserting the Pitot tube or the Pitot-static tube into a narrow pipeline. It is considered that a diameter of its root tube, an axial length of the inserted part of its root tube and a diameter of its nose tube are principal factors for such a blockage effect. The goal of this study is to establish the pressure correction method for blockage effects due to the Pitot tubes and the Pitot-static tubes. Using two kinds of Pitot tubes and two kinds of Pitot-static tubes, a series of pressure measurements was carried out in the region of the velocities used ordinary in the low speed ducts for air-conditioning. Experimental equations between the measured values in total-pressure or static-pressure and the area ratios of the frontal area of Pitot tube or Pitot-static tube to the cross section of the pipeline were obtained in our measurements. A correction for the pressure change in total-pressure or static-pressure due to blockage effects was accomplished using the experimental equations and the measured value which was independent of the diameter of the root tube. Through the iterative calculations, the real values in dynamic-pressure were obtained.

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With the aim of embodying its educational policy whereby emphasis is placed on a favorable relationship with nature, H High School, in Hiroshima City (34°22'N and 132°26'E), has adopted a tension membrane-structured roof for its gymnasium, to create a bright space integrated with the campus which is surrounded by greenery. This roof is framed with pieces of glue-laminated lumber, on which a 0.8mm thick single-layered membrane composed of glass fiber base sheet coated with teflon is laid. While the membrane-structured roof has the major advantage of being translucent, it also admits the penetration of solar radiation, so a thorough study of the indoor thermal environment in the summer period would be required. Since this facility is a gymnasium for the junior and senior high school students, the plan excluded the use of active cooling, but aimed at planning and implementing the proposed roof spraying system as a means of passive cooling utilizing natural energy. The principles are that water is sprayed onto the membrane roof surface to reduce its temperature through the cooling effect of evaporation into the open air, thereby facilitating the passive cooling of the gymnasium inner space. This paper begins firstly with outlining the roof spraying system by means of evaporative cooling, and discusses the field measurement results of the thermal effects, which were carried out on typical summer days. Through field measurements, the author has proved that roof spraying reduces the indoor PMV, which further leads to a decrease in PPD, and SET^* is also reduced, which enhances the indoor thermal environment, producing a noticeable passive cooling effect. Furthermore, this study has provided field measurement data representing the lighting and thermal characteristics of the single-layered, membrane-structured gymnasium. Secondly, a theoretical analysis of the thermal effect is made, followed by verification of results between analysis and field measurements. As both results concur, theoretical simulation is carried out by using the meteorological data of Hiroshima City then available. Here, the results of the predicted effect of passive cooling during the summer period are discussed.

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This report describes the experimental study on the possibility of air cooling-type single stage absorption refregerating cycle and corrosion inhibition of carbon steel, when the aqueous mixed solutions of LiBr and CaCl_2 developed by us was used as absorbent. It is sure that this cycle can produce a cooling source with 7℃ without crystallization of absorbent at air cooling condition (over 36.5℃ of cooling temperature for absorber) by means of the absorption refregerating machine with 4 USRt (12000kcal/h) of cooling capacity, and the mixture absorbent contained 0.04% Benzotriazole (BTA) has the same corrosion inhibition as conventional absorbent (LiBr) and this weight loss is 40mg/dm^2 at 100℃, 65% after 1000 hours.

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This study has been made on the mechanisms of head loss in turbulent flow, and shows quantitatively that head losses are caused by the flow impact of fluid with fluid or on the wall. Furthermore, the author has introduced theoretical equations which express loss coefficients in pipe and duct junctions; The theoretical equations contain the coefficients which were determined on the basis of the experimental results of many researchers. These equations well represent the actual phenomenon.

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This report describes an experimental study on the development of a mixed absorbent with high solubility. From the viewpoint of both vapor pressure and solubility in single aqueous solution, inorganic substances with cations of Ca, Li and anions of Cl, Br were selected for the mixture components. Measurements of both vapor pressure and solubility in the mixture solution indicated that the aqueous mixed solution of LiBr-CaCl_2 was the best pair of all pairs examined. The solution with a mixture ratio X by weight [CaCl_2/(CaCl_2+LiBr)]=0.33 made a good absorbent with higher solubility, (14% improvement) for an absorption refrigerating machine, and that the solution with X=0.67 was a good chemical heat storage medium with low cost (43% down), both compared with LiBr aqueous solution.

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This report describes an experimental study on the absorption heat transfer and the properties of a LiBr・CaCl_2 aqueous mixed solution, developed as the absorbent for a single stage absorption refrigerating machine. Both viscosities measured and heat conductivities calculated, indicated that the aqueous mixed solution of LiBr・CaCl_2 had the low fluidity and high heat conductivity compared with LiBr aqueous solution. From the experimental data with the falling film flow rate (0.004〜0.04kg・m^<-1>・s^<-1>) and concentration (45〜60%) of both LiBr aqueous solution and aqueous mixed solution with a mixture ratio by weight [CaCl_2/(CaCl_2+LiBr)]: 0.33, the experimental formula with dimensionless numbers for absorption heat transfer in a falling film along an inclined plane (angle: 40 degrees) covered with cloth under reduced pressure (about 5kPa), was proposed.

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This paper presents a theoretical analysis of absorption heat pumps. For developing a new cycle or for comparing absorption cycle with other cycles, it is necessary to analyse absorption cycle by means of the first and second laws of thermodynamics. Laws of Thermodynamics and Duhring's law are both applied to calculate the coefficient of performance and temperature boost. The results of this thermodynamic analysis give the performance evaluation for single-stage and multi-stage absorption cycle.

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