In this paper, a new experimental method for measuring thermal conductivity and thermal partitioncoefficient for building materials is presented. The uniqueness of this method is that theaforementioned physical properties are measured for the building materials under the same conditionsas in real life. This method is based on monitoring the temperature difference across the sample andthe solution of the transient conduction equation. The proposed method and designed apparatus weretested using some building materials (i.e.
Treats a research study by the Danish Building Research Institute to develop a comprehensive set of design details for the use of bricks in a highly insulated cavity wall and building methods that could easily be followed by contractors. Illustrates photographically and describes the detached house which resulted from the project. Illustrates structural details diagrammatically. The energy consumption of the house is less than a quarter of older houses of similar size. Explains the design details to avoid thermalbridges and the application of modular coordination.
Notes that moisture problems could arise with improvements to thermal insulation of buildings. In addition indoor radon levels could rise. Considers the choice of heating system. Compares total costs of alternative systems. Treats the effects of increased insulation on internal environments. Identifies moisture sources. Stresses this should be regarded as only a limited guideline and that there is a need to ascertain the heat and mass transfer behaviours of building materials, particularly those that affect prediction of the transient behaviour.
The R-values of permeable insulation systems are generally determined in test apparatus designed to assure one-dimensional heat transfer and to assure no air intrusion effects. Such classical R-values are used to help describe insitu heat-tra
A table is given which compares the performance, construction and function of the various types of window treatment. Aspects covered include sun control, thermal insulation, infiltration barrier, security and privacy, control by static, movab
Reports on seminar at University of Lund, Sweden and the factors affecting U-value: radiation, thermal capacity, moisture in materials, evaporation of precipitation moisture, convection, air movement, quality of work, cold bridges, ageing, air gaps.
Describes a small calibrated hotbox, developed at Lawrence Berkeley Laboratory for studying methods of improving window performance. Describes the construction and calibration of the box. Discusses measurements of thermal conductance made with the box. Finds the hotbox is reliable with known skin losses and free of systematic errors to at least the 7% level.