65 research outputs found

    〔報文〕過去の高松塚古墳石室内の温湿度変動解析(3)―吸放熱パネルへの送水温度および入室が石室内温湿度変動に与える影響―

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    In order to investigate the causes of deterioration of the mural paintings of Takamatsuzuka Tumulus, it is very important to clarify temperature and humidity variation in the stone chamber. We estimated how the environmental conditions surrounding the stone chamber and the internal works affect temperature and humidity in the stone chamber by making use of numerical simulation. The simulation was based on the measurement data and records of Takamatsuzuka Tumulus in the past. We made an analytical model taking into account the mound and the conservation facility and set up each condition in terms of factors which influence temperature and humidity in the stone chamber. We considered records of the past as far as possible to makethe model and set up the boundary conditions. In this study, we investigated the effect of temperature of the heating and cooling panel, which controls the temperature of the anterior chamber of the stone chamber, and that of work in the stone chamber during the operation of the conservation facility on temperature and humidity in the stone chamber. The obtained main results are as follows.1. Calculated room temperature in the stone chamber using the measured temperature of the heating and cooling panel is in good agreement with the measured room temperature in the stone chamber except for the period from 2002 to 2004. Therefore, calculation considering the climatic change and measured temperature variation of the heating and cooling panel explains more or less the temperature rise in the stone chamber for 30 years.2. Calculation considering the above conditions cannot explain temperature variation in the stone chamber from 2002 to 2004.3. There is a correlation between the number and frequency of people working in the stone chamber and the growth of the fungi in the stone chamber.4. After continuous work in the stone chamber, temperature of the stone chamber became slightly higher than that before it. This is one of the main causes of temperature rise in the stone chamber

    〔報文〕闘鶏山古墳の石槨内部発掘調査時の空調制御方法に関する研究

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    Tsugeyama Tumulus is an 88 m keyhole-shaped tumulus located in Takatsuki city in Osaka prefecture. Two stone chambers, which have not been looted, were discovered in the circular portion of the tumulus in 2002. The tumulus was designated as a national historic site in the same year and became subject of permanent preservation. However, in the photo image survey of the stone chamber in 2006, condensation and fungi growth were found. Human bones and funerary goods such as mirrors, on the reverse sides of which designs of gods and animals are carved, are threatened by the impact of condensation, fungi and other factors. Thus, a method for taking out the funerary goods by excavation has been investigated as a workable alternative to continuing preservation on site. During excavation, construction of a shelter and installation of an air conditioning system seemed to be essential because of the risk of progressive deterioration due to drying or occurrence of condensation on excavated artifacts. In this study, we aimed to clarify the proper method of controlling temperature and humidity around the stone chamber. We clarified the principle for controlling air conditioning and investigated the results of numerical analysis considering heat and moisture transfer in the stone chamber and its surrounding ground. One of the main results is that in order to keep temperature in the stone chamber constant and reduce temperature distribution during excavation, it is necessary to maintain a constant temperature and humidity of the space adjacent to the stone chamber and not to insulate the walls of the space. In the future, we plan to propose a method to control temperature, humidity and air quality so that they will be good for the conservation of the funerary goods and the health of the workers when they enter the stone chamber

    〔報文〕過去の高松塚古墳石室内の温湿度変動解析(2)―墳丘部表面の植生等の変化が石室内温度変動に与える影響―

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    In order to investigate the causes of deterioration of the mural paintings of Takamatsuzuka Tumulus, it is very important to clarify temperature and humidity variation in the stone chamber. We estimated how the environmental conditions surrounding the stone chamber and the internal works affect temperature and humidity in the stone chamber by making use of numerical simulation. The simulation was based on the measurement data and records of Takamatsuzuka Tumulus in the past. We made an analytical model taking into account the mound and the conservation facility and set up each condition in terms of factors which influence temperature and humidity in the stone chamber. We considered records of the past as far as possible to makethe model and set up the boundary conditions. In this study, we investigated the effect of different mound covering conditions — vegetation, waterproof sheet and temporary shelter —on temperature and humidity in the stone chamber during the operation of the conservation facility. The obtained main results are as follows.1. Cutting vegetation and putting waterproof sheet on the mound in September 2003 was one of the main causes of temperature rise in the stone chamber around 2004.2. Setting up the temporary shelter on the mound was one of the main causes of temperature fall in the stone chamber after the removal of the waterproof sheet in September 2004

    〔報文〕過去の高松塚古墳石室内の温湿度変動解析―保存施設稼働時の気象条件の影響と、発掘直後の仮保護施設の影響―

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    In order to investigate the causes of the deterioration of the mural paintings of Takamatsuzuka Tumulus, it is very important to clarify temperature and humidity variations in the stone chamber. We estimated how the environmental condition surrounding the stone chamber and the work conducted inside the chamber affect temperature and humidity there by making use of a numerical simulation. The simulation was based on the measurement data and records of Takamatsuzuka Tumulus in the past. We made an analytical model taking into account the mound and the conservation facility and set up each condition in terms of factors which influence temperature and humidity in the stone chamber. We considered records of the past as far as possible to make the model and set up the boundary conditions. The following two periods were investigated:1)  The period from the discovery of the mural paintings to the beginning of the operation of the conservation facility, hence from 1972 to 19762)  The period from the beginning of the operation of the conservation facility to before the dismantlement of the stone chamber, hence from 1976 to 2005 As the first step, we investigated the effect of the temporary shelter set up immediately following the excavation of the tumulus in the former period and the effect of outside air temperature change on temperature and humidity in the stone chamber during the operation of the conservation facility in the latter period. The obtained main results are as follows:1.  Outside air temperature change was one of the main causes of temperature rise in the stone chamber for 30 years.2.  Other causes that affect temperature rise in the stone chamber are as follows: 1) controlling of the temperature of the antechamber and preparation room, 2) heat transfer of the building frame of the conservation facility, 3) temperature variation in the mechanical room, 4) people entering and exiting from the stone chamber and 5) mound condition.3.  Before the excavation, relative humidity in the stone chamber was nearly 100% throughout the year.4.  By setting up the temporary shelter after the excavation, amplitude of temperature in the stone chamber became larger than it was before the excavation, while relative humidity in the stone chamber slightly decreased from nearly 100 % .5.  By setting up the temporary shelter after the excavation, the inside surface relative humidity of the south side wall and ceiling decreased and the south side wall and ceiling dried slightly. Future tasks are to investigate other causes of temperature rise in the stone chamber during the operation of the conservation facility and the influence of entering and conducting works on temperature and humidity in the stone chamber from the time of its excavation to before its dismantlement

    インドネシアに建つ環境共生住宅の温熱環境評価と新しい環境共生手法の提案

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    平成13-14年度科学研究費補助金(基盤研究(B)(2))研究成果報告書 課題番号:13574009 研究代表者:鉾井修一(京都大学大学院・工学研究科・教授

    湿った建築壁体の熱的特性に関する基礎的研究

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    京都大学0048新制・論文博士工学博士乙第6076号論工博第1999号新制||工||680(附属図書館)UT51-61-Q155(主査)教授 寺井 俊夫, 教授 松浦 邦男, 教授 岡﨑 守男学位規則第5条第2項該当Kyoto UniversityDFA

    Prediction method of daily hot water supply part 2

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    Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D-2, Environmental engineering II, Heat, moisture, thermal comfort, natural energy, air flow, ventilation, smoke exhaustion, computational fluid dynamics, indoor air quality heating, cooling and air-conditioning heat and cold sources, piping systems application of building service
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