| ■Tokyo National Research
Institute for Cultural Properties |
■Center for Conservation
Science |
| ■Department of Art Research,
Archives and Information Systems |
■Japan Center for
International Cooperation in Conservation |
| ■Department of Intangible
Cultural Heritage |
|
Lecture by Professor John Grunewald, Dresden University of Technology
A conference on Analysis of Conditions at Facilities Handling Cultural Properties and Reduced Energy Use by Museums was held on February 25, 2011 in the seminar hall of the National Research Institute for Cultural Properties, Tokyo. The current problem of global warming requires efforts to reduce the emissions of greenhouse gases at every facility. Facilities like museums and art museums are no exception. Facilities like museums and art museums need to have reduced energy use while adequately maintaining conditions so that cultural properties can be safely passed on to later generations. At the conference, Professor John Grunewald of Dresden University of Technology, who oversees environmental analysis of projects to reduce energy use by buildings in Germany, gave a lecture on Techniques for Reduced Energy Use by and Analysis of Conditions in Buildings in Germany. Dr. Rudolf Plagge of Dresden University of Technology also gave a lecture on Methods of Measuring the Physical Properties of Building Materials in relation to Environmental Analysis. Dr. Plagge’s lecture cited the problem of deterioration of marble statuary along Berlin’s Unter den Linden Boulevard. In addition, Motoe Kanno, Akihiro Yagawa, and Akihiko Ohta of the Shimizu Corporation gave a lecture entitled Techniques for Airflow Simulation to Analyze Conditions at Facilities Handling Cultural Properties and Examples of Their Use. They described techniques for environmental analysis and they cited sample analyses performed during renovation of the Nezu Museum’s repository. There were 50 attendees in total, and an active exchange of opinions took place.
Lecture presentation by Dr. Andreas Nicolai.
On January 26 (Tuesday), the above workshop was held at National Research Institute for Cultural Properties, Tokyo. Professor Grünewald of the Dresden University of Technology and Dr. Kikkawa of the Institute gave a lecture on an environmental assessment of a library and a simulation analysis concerning the risk of mold occurrence. Dr. Nicolai of the same university gave a lecture on the modeling and numeric analysis of salt movement and phase changes inside unsaturated porous building components. Dr. Plägge of the same university gave a lecture on methods for measuring the moisture characteristics of building components. This workshop comprehensively covered analytical approaches for environmental analysis, methods for measuring the building component moisture characteristics necessary for analysis, and presented a case example for when analysis is adopted for an actual building. A vigorous exchange of opinions was made possible through this event.
Lecture by Mr. Stephan Simon from Rathgen Conservation Laboratory
On December 8, 2009, we held a seminar on the theme of “energy conservation at museums with a view to maintaining an appropriate environment for cultural properties” in the seminar room of the National Institute for Cultural Properties, Tokyo, for the second straight year. This year, Dr. Stephan Simon from the Rathgen Conservation Laboratory in Germany gave a lecture under the title of “Conserving energy at museums and the conservation environment in exhibition/storage facilities in Europe”, and Professor Hokoi Shuichi from Kyoto University gave a lecture titled “Conserving energy for museums in a warmer environment”. Moreover, Dr. Ashie Yasunobu from the Ministry of Land, Infrastructure and Transport presented a lecture under the title of “Approaches for achieving sustainable urban spaces in a low-carbon society”. Finally, Dr. Kanba Nobuyuki from the Tokyo National Museum presented a lecture under the title of “Conserving cultural properties coexisting with a low-carbon society” and introduced the activities in place at the Museum. A total of 75 people participated in the seminar and held active discussions.
On December 4, 2008, a seminar on the theme of conserving energy at museums with a view to maintaining an appropriate environment for cultural properties was held in the seminar room of the National Research Institute for Cultural Properties, Tokyo. This theme had been chosen at a meeting of the Center for Conservation Science and Restoration Techniques as one that the Institute would study in cooperation with museums.
Two lectures were given at this seminar: Mr. Maekawa Shin of the Getty Conservation Institute (USA) spoke on energy conservation for museums with consideration for storage and display environment and Mr. Shiraishi Yasuyuki of the University of Kitakyushu spoke on comprehensive assessment system building environmental efficiency (CASBEE) and its case studies. Reports on concrete endeavors on this matter were also given by the Kyushu National Museum and Saitama Prefectural Museum of History and Folklore.
A total of 141 people participated in the seminar and held active discussions.
A scene from “Climate change and museum collections”
The IIC congress was held in 15-19 September at Queen Elizabeth II Conference Centre in London. The main theme of the Congress was “Conservation and Access”. Various ideas, surveys and practical examples were given on transportation and handling of cultural assets, disclosure and management of easily damaged materials, and information was exchanged. A symposium entitled “Climate Change and Museum Collections” took place during the congress. Changes in environment due to global warming and consequent effects on cultural assets were discussed. In addition, representatives of the organizations in each country referred to as IIC Regional Groups held a meeting. Ms. SONODA of the National Museum of Ethnology and Mr. ISHIZAKI of our Institute from Japan attended. Strengthening of collaboration between the organizations in each country was discussed.
Mr. Daniel giving a lecture at the Institute
The Center for Conservation Science and Restoration Techniques is engaged in a project entitled “Analysis of the Environmental Condition Surrounding Cultural Properties.” On July 10, 2008, Mr. Vinod Daniel of the Australian Museum, who was visiting Japan, spoke at a seminar held in the conference room of the Institute on the topic of international trends in museums with regard to collections and collections care. In his lecture, Mr. Daniel introduced case studies on the conservation and utilization of folk cultural properties in the Pacific, subjects about which the Australian Museum is engaged in. The influence of global warming and the issue of energy consumption at museums were also discussed among the participants.
Liaison meeting of the Center for Conservation Science and Restoration Techniques
With the integration of the National Research Institute for Cultural Properties and the National Museum in April of this year, the former Departments of Conservation Science and Restoration Techniques were integrated to form the Center for Conservation Science and Restoration Techniques. At the same time, research staff in charge of conservation at four National Museums and the National Research Institute for Cultural Properties, Nara have been assigned concurrent positions at the Center. On August 3, the first liaison meeting was held at the Small Hall of the Institute in Nara and 28 people participated. At the meeting, staff of the National Museums and National Research Institutes for Cultural Properties were introduced, outline of this year’s projects were presented and information was exchanged. Diverse opinions, such as a request to the Institute for cooperation in conducting scientific investigation of objects stored at museums, were expressed. Prior to this meeting, an on-site study was conducted of the condition of excavation of the floor stones and of the insulated, air-conditioned conservation facility at Takamatsuzuka Tumulus. The participants also had the opportunity to see the wall paintings that had been taken out of the tumulus and moved to a facility for their conservation. All in all, it was a very meaningful liaison meeting.
Overview of the aid-conditioning system inside the insulation chamber
The stone chamber of Takamatsuzuka Tumulus is now being dismantled for conservation. As the excavation of the mound surrounding the stone chamber progresses, the stone chamber will become exposed to outside air and the temperature and humidity inside the chamber is expected to be greatly affected by changes in the outside temperature and humidity. In order to maintain the temperature and humidity inside the stone chamber stable, a chamber with insulation walls was constructed on the mound and measures were taken to control the air inside. Since fungal growth generally increases as the temperature rises, cooling pipes were installed to keep the temperature at 10℃ and the humidity at 90%.
To control humidity, air is passed through a scrubber, a container in which water is sprayed, and the humidity is adjusted by means of a heat converter called fancoil. Since a very small change in temperature can cause a great change in relative humidity when the temperature is as low as 10℃, the value of temperature and humidity within the insulation chamber is put into the computer and controlled by a feedback system. With regard to the control of air inside the insulation chamber, we were able to obtain the initially planned results with the cooperation of Professor Hokoi Shuichi of Kyoto University.
