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Schematic demonstrating the use of fans and heaters/dehumidifiers to control relative humidity in Hollybourne Cottage. Photo: Shin Maekawa.
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External view of exhaust ventilators in Hollybourne Cottage attic. Wooden louvers were mounted on the window exterior to camoflauge the fans from the outside. Photo: Shin Maekawa.
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Comparisons between outside relative humidity and interior relative humidity (measured by RH/temp sensor mounted here on a first floor tripod) determine use of ventilation or heating/dehumidification at Hollybourne Cottage in Jekyll Island, Georgia. Photo: Shin Maekawa.
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Environmental monitoring system outside Hollybourne Cottage measures general climatic data, including temperature, relative humidity, solar radiation, rainfall, groundwater level, soil moisture, and wind speed and direction. Photo: Shin Maekawa.
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A convection heater is mounted on the ceiling of the basement. This heater is capable of increasing room temperature 5 to 6°C. Photo: Shin Maekawa.
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A supply ventilator mounted on a second floor window transfers outside air into the interior at an infiltration rate of 6
to 9 air exchanges per hour. Photo: Shin Maekawa.
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Severe wood decay of interior sheathings and floors on the ground floor of Hollybourne Cottage in Jekyll Island, Georgia, the result of elevated relative humidity in the walls and basement. Photo: Shin Maekawa.
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The main facade of Hollybourne Cottage in the historic district of Jekyll Island, Georgia, USA. Photo: Shin Maekawa.
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A datalogger, modem, and multiplexer (mounted on the door) are housed in a protective enclosure located in the basement. A supply ventilator is visible in the background. Photo: Shin Maekawa.
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Two supply ventilators are connected to one ventilation duct to create high volume airflow into the storage space. Photo: Shin Maekawa.
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View of ventilation register and ducts and convection heater (on the right of picture). The heater is used to reduce interior relative humidity by increasing room temperature by several degrees Celsius when outside air is too humid. Photo: Shin Maekawa.
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Fungal growth on this book (part of the Historic Archive of La Laguna, Tenerife Island, Spain) is due to extended exposure to high levels of relative humidity. Photo: Shin Maekawa.
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External view of the Valle de Guerra storage facility in Tenerife, Canary Islands, Spain. The test storage space is located on the second floor. Photo: Shin Maekawa.
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An exhaust ventilator is used to transfer air from inside the storage area to the building exterior when outside relative humidity is below 75%. Photo: Shin Maekawa.
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The ceiling of the Goeldi storage room is covered with a thermal insulation blanket to reduce heat loss. Photo: Shin Maekawa.
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A vestibule area has been created to control air infiltration at the entrance of the storage room. Pictured at center is a protective housing for environmental monitoring equipment, including a datalogger, multiplexer, and modem. Photo: Shin Maekawa.
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Ventilation ducts mounted to the storage room ceiling of Goeldi Museum. Photo: Shin Maekawa.
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Supply ventilators with filter attachments allowing for the transfer of particulate-free outside air into the storage space for the Goeldi Museum. Photo: Shin Maekawa.
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Exhaust ventilation ducts and a recirculation fan mounted on a side wall of the storage room at Goeldi Museum, Belém, Brazil. Photo: Shin Maekawa.
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The north facade of Casa de Rui Barbosa in Rio de Janerio, Brazil—windows are typically closed on its north face due to afternoon sunlight and particulate pollution from the heavily trafficked adjacent street. Photo: Shin Maekawa.
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Home to the bulk of the book collection on display in the museum, the Constitution Room is one of four rooms (the others are the Civil Code, Civilista, and Casamento Civil Rooms) in Casa de Rui Barbosa that will be the focus of the proposed climate control system. Photo: Shin Maekawa.
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Passive air pollution samplers deployed on the second floor balcony of Casa de Rui Barbosa. Examining ozone, sulfur dioxide, and nitrogen oxides, samplers were positioned throughout the house interior and exterior to gain a sense of localized pollutant levels. Photo: Vincent Beltran.
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