Data were collected and analyzed for business facilities that introduced a domestic renewable energy heat utilization system. The welfare facilities in Shisui Town have introduced a solar-heat / ground-heat hybrid system, and the annual COP was 0.65. It has been found that the COP is improved by about 40% by applying the improvement proposal. In addition, analysis of data from large-scale heat supply districts across the country showed that the average system COP and CO₂ emissions were most efficient in the power-based business, and there was a correlation between COP and CO₂ emissions.

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This paper describes about Ultra Light-weight Vehicle (ULV) which is a vehicle that can to operate with the smallest body size and the least energy consumption. From the recent development of automobiles society, there is a high demand for a small size and environmental-friendly mobility. In this paper, as a part of the ULV development strategy, we examined the model ULV-A that uses compressed air as an energy source. A rotary vane type air motor was used for the prime mover. The performance of the air motor was compared with that of the conventional air engine from the engine unit performance test and the running test on the chassis dynamo. Focusing on the air flow rate, the relationship between pressure and output was confirmed. In addition, the cruising distance was calculated from the perspective of the exergy of the loaded compressed air, and the improvement of the running performance of the vehicle was examined.

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Recently, the energy consumption is increasing and should be decreased all over the world. Using renewable energy is one of the solve this kind of problem. The solar energy is one of the renewable energy and must not be exhausted and the collected energy is easy to store in competition of oher kind of renewable energy. That is why, aolar energy is becoming remarkable energy in recent. The solar air heat collector can heat the air by absorber plate heated by solar radiation heat. By using honeycomb structure in this absorber plate, the heat transfer area can be expanded rapidly. In my research, I made the simple mathematical model of this honeycomb solar air heat collector, and predict or analyze the performance of it with the mathematical calculation software ‘Matlab’.

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We proposed the new type turbine, double rotor turbine, for OWC to improve the performances of starting characteristics and efficiency. The splitter plate of the double rotor turbine is the most important part that divides the flow into Wells or Impulse rotor. It is discussed the influence of the splitter duct length to the performances in numerically. A torque is gradually decreased with the splitter duct shorter, but the variation is small. The efficiency becomes maximum at 0.5 length. The variation of the efficiency with the flow rate is almost same to the duct length. The starting characteristics is improved from the wells turbine at all duct length. At long splitter duct，it is remarkable the flow into the wells rotor wraps around the edge of splitter duct. The flow rate of wells turbine is longer than impulse turbine．

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Pressure Retarded Osmosis (PRO) is one of the renewable energy that based on the large osmosis pressure between the sea water and fresh water. It is required to increase permeation flux. In this report，it is researched in concerned to the fresh-water flow condition. The central seal is assembled in the fresh water channel between the thin firm membranes for PRO. The length of the central seal is examined for the performance of the permeation and the pressure loss. The long central seal increases the permeation, because it is increased the effective permeation area in fresh water channel. But the pressure loss increases with the central seal length．

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Melting of bottom ash discharged from waste incinerators enables, - Detoxification of harmful substances in the ash due to its high melting temperatures of higher than 1300 °C. - Reduction of the amount of landfilled waste due to the volume reduction of ash transformed to slag. - Recycling of resources extracted from fly ash. However, bottom ash to be melted containing little inflammable substances does not contribute to melting. It is therefore one of the most important things in melting furnaces to cut fuel cost, which leads to the running cost cut. Waste plastics are actively recycled according to the Containers and Packaging Recycling Law but unrecyclable plastics are landfilled.These landfilled waste plastics, if used as part of the melting fuel, would be able to save fuel and reduce landfilled waste. As a result, this plan may solve the above mentioned problems simultaneously. This paper shows how we applied the waste plastics to a rotating surface melting furnace as an auxiliary fuel with verification test results and some practical use instances.

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Many auto operating systems for solid waste cranes have been developed and used because homogenization of solid waste by cranes is important for stabilized incineration. However, the crane operating systems have been used in limited conditions and its settings are complex. Conventional automate crane operation systems can not correspond complexed operation as daytime operation and handling characteristic solid waste. In this study, skilled crane operators were interviewed, and questionnaire survey results based for the other crane operators was done. Important information should be recognized to operate crane were solid waste category, position and state, height of stocked solid waste, roles of each section in the waste pit and schedule. The crane operation has six patterns. Those were keeping space of waste acceptance, breaking bag, mixing, throwing waste to hopper of incinerator, stocking mixed waste and digging up the stocked wastes. The rules of automate crane operation were assembled from the above recognized information and operation patterns.

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The mercury adsorption characteristics of activated carbon was clarified by the activated carbon column test, which is introduced the simulant flue gas containing mercury. The results showed that the mercury equilibrium adsorption quantity of the activated carbon increases as the mercury concentration in the simulant flue gas increases and as the temperature in the column decreases, the amount of mercury desorbed from the activated carbon increases as the amount of adsorbed mercury in the activated carbon increases and as the temperature in the column increases. Moreover, these behaviors are expressed by Langmuir equation.

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JFE Engineering has continued to make various efforts from an early stage for PFI/DBO projects involving the joint management of facilities by the government and private businesses, and is engaged in operating waste to energy plants through long-term comprehensive commissioned projects. JFE Hyper Remote was developed to reduce plant life cycle cost and to support safe and stable operation. Connecting by the high speed optical fiber networks in various plants beginning with waste to energy plants constructed and operated by JFE Engineering and the Global Remote Center(GRC) at Yokohama headquarters, we provide comprehensive services by remote monitoring and operation support and automatic operation.

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Acoustic liner is one of the most promising devices for aero-engine noise suppression, especially for fan noise suppression. Its fundamental characteristics can be obtained by impedance tube measurements or by impedance eduction with grazing flow duct facilities, however in the product development stages it is necessary to evaluate its performance on larger scale models, such as rotating fan rigs or real aero-engines. Japan Aerospace Exploration Agency (JAXA) has introduced a small turbofan engine called DGEN380 for engine noise studies and has carried out outdoor tests since 2016. In the present study, to achieve the fan noise reduction, the acoustic liners are designed, then curved acoustic liner panels are fabricated by 3D printer and installed on an intake duct of the engine. The acoustic performance of the liners is evaluated by two measurements. First, in-duct acoustic mode propagation is measured by the microphone array inside the duct surface at the upstream of the acoustic liner. Secondly, sound radiation pattern from the engine is obtained by 20-meter arc microphone array measurement. From the results of both measurements, the noise reduction at the designed frequency bands is confirmed.

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In this paper, for the purpose of examining a method of quantitative evaluation of uncomfortableness for home medical equipment noise, we evaluated the impression of combined sound composed of air exhaust noise and air compressor noise which are typical noises of home medical equipment. As a result, it was confirmed that the impression of uncomfortableness tends to be different between the case when only the air exhaust sound is heard and the case when the air exhaust sound is heard in the combined noise. Furthermore, from the correspondence between the impression evaluation results and the psychoacoustical parameter, the uncomfortableness of the case when only the air exhaust noise was heard and the loudness were found to have a strong correlation. It was suggested that the uncomfortableness of the case when the air exhaust noise heard in the combined sound could be estimated by the loudness calculated by the masked loudness method.

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We examined a method to estimate the low frequency sound source position on the roof of a building using a microphone array placed on the ground surface. First, we conducted numerical simulations about array placement. As a result, it became clear that it was effective to arrange the two-dimensional array emanating away from the sound source. Next, we conducted the field experiments using a loud speaker and eight microphones to verify estimation accuracy. From the results, it was found that the position of low frequency sound sources of 20 to 40 Hz can be accurately estimated within an area of 2 m.

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Soil from disaster waste represented by tsunami deposits is expected to be reused as a reconstruction material. Although the loss on ignition method is used as an indicator of the organic content of the soil, it may not be sufficient as a test to reconstruction material. Because, it is overestimate to use the value by this method as the amount of organic matter. In this study, we investigated the effect of plastic on wood chip degradation to improve the ignition loss method. In this experiment, the crucible was weighed continuously while heating to 400 °C. Two grams of the sample was placed in a 30 ml crucible. Cypress, PE and clay was used as a sample and mixed at an arbitrary ratio. Previous studies have shown that plastic mixing slows weight loss behavior at temperatures below 400 °C. The same tendency was confirmed in this study. The delay in reaction initiation was strongly correlated with the weight of PE, and the correlation coefficient was 0.796.

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DeNOx by photochemical reaction using 172 nm vacuum ultraviolet is available for NO/H₂O/O₂ gas mixture at room temperature. In order to efficiently remove nitric oxide fromcombustion exhaust gas at low temperature, the effect of methane addition as a deNOx agent on NO removal rate was investigated at room temperature. The model flue gas containsthe NO concentration of600 ppm, the O₂ concentration of 8.0 %, and the water concentration of 7.0 %. The methane concentration and/or gas residence time were varied in the experiments. The NO removal rate was 66.3 % without additive of methane. When methane of 2000 ppm was added to the model flue gas, the NO removal rate was slightly improved to 70.3 % at short gas residence time of 2 s.At long gas residence time of 4 s, methane had no effect on deNOx.

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The hydrogen conversion from saturated steam was investigated using an atmospheric plasma reactor. The steam concentration was varied by water temperature control, the steam feed rate was changed by the flow rate of argon gas as carrier gas. The applied voltage of the dielectric barrier discharge was also changed at the ranges of 7−11 kV. At the low steam concentration, the stable plasma was observed: the highest H₂ conversion from steam was attained to 86.7 % at the Ar flow rate of 0.1 L/min. This is first observation of steam decomposition by dielectric barrier discharge.

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Effect of the length of ground electrode and the configuration on the ammonia decomposition was investigated to increase the hydrogen production rate. An original pulsed plasma reactor with a hydrogen separation membrane was used for efficient hydrogen production, and its hydrogen separation performance was examined using different length of the ground electrode and the different configuration. 50 mm, 150 mm, and 300 mm electrodes were used. The configuration was changed at the inlet side, center of the reactor, and the outlet side. The hydrogen permeation rate was proportionally increased with an increase in the electrode length. The 300 mm electrode indicated the best hydrogen permeation rate. However, the hydrogen permeation rate per the power consumption was the highest for the 50 mm electrode.

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The study aims to remove the motor to rotate the cylindrical blade which generates the power of the vertical axis type Magnus wind turbine. The driving force is the Magnus force generated by rotating cylindrical blades. In this field Challenergy is now a leading company and has improved power generation efficiency by attaching a flat plate behind a cylindrical wing. Our previous research confirmed the effect of the plate last year. The research also found out two countermeasures to improve power generation efficiency. One is to install protection plates at both ends of the circular cylinder blades to suppress wingtip vortices, and the other is to attach a curved wing behind a cylindrical blade. However, since the present windmill consumes the electric power to rotate the cylindrical blade, this now results in a major cause of lowering the power generation efficiency. Therefore, in this research, we have developed vertical axis type Magnus wind turbine which does not require any power by optimizing the shape of cylindrical blade. The wind tunnel experiment showed that the net power generation of the windmill can be achieved only under the limited condition, taking the power consumption of the motor into consideration. The experimental test found that the turbo sail type is the most effective of several models in removing the motor to rotate the cylindrical blade. CFD analysis clarified the mechanism that the turbo sail type is able to improve power generation efficiency.

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