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Svennberg, Kaisa; Wadsö, Lars (2005)
Languages: English
Types: Conference object
Subjects: bed, mattress, Materialteknik, Husbyggnad, relative humidity (RH), material properties., bedding, Materials Engineering, house dust mites (HDM), Building Technologies, temperature, climatic conditions, measurements

Classified by OpenAIRE into

mesheuropmc: respiratory tract diseases, complex mixtures, integumentary system
House dust mites are animals of a size less than 0.5 mm that can live in beds, carpets and furniture feeding on skin scales. They are a common source of allergy in, e.g., Scandinavia, where their major habitat is in beds. Previous studies show that in drier environments the house dust mite occurrence is lower, and persons with dust mite allergy have fewer symptoms during the winter when the indoor relative humidity (RH) is low. There have also been attempts to alter the microclimatic conditions in beds to reduce the house dust mite occurrence. The microclimatic conditions in beds have been studied both in field measurements and by modeling but there is still a lack of knowledge of how the hygrothermal material properties of the mattress and bedding affect the environmental conditions for the house dust mites. This paper presents diurnal temperature and RH variations in mattresses and beddings under normal use measured for two different mattress types. The climatic results from the beds have been compared to microclimatic requirements that govern the house dust mite activity levels. This study is a part of a multidisciplinary project aiming to find technical solutions for reduction of house dust mites in bedrooms by environmental control.
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