Reports heat loss measurements made in an unoccupied house at Kenmay, Scotland. Gives constructional details of this well-insulated house. Reports measurements of energy and temperatures over two heating seasons and short term measurements of ventilation by tracer gas decay method. Finds natural ventilation rate of 0.25 air changes/hour and attributes this to low windspeeds. Compares calculated value of fabric heat loss with measured value and finds good agreement. Finds type of system used, either convective or fan heating has not affected the measured heat loss.
Users' manual and documentation connected with computer program ENCORE. Program is based on weighting factor method. Provides general description of input data, building location and shape, heating system and building use.Describes in more detail standard output, error messages and warnings. Provides examples concerning warm-air heated house and house with electric space heating system. supplied detailed documentation of subroutines.
Presents results of a survey of natural infiltration rates in 2 identical modern homes-one gas fuelled and one electric-over aperiod of a year. Infiltration rates were determined by releasing tracer gas, usually ethane, into the main return duct and measuring concentration every half hour. Discusses results and dependence of infiltration rates on wind speed and direction. Gives preliminary result that wind probably exerts agreater effect on infiltration than any other variable.
Gives method for calculating air infiltration through window cracks. Calculates pressure drops across windows in buildings for four types of building and discusses resulting pressure differences. Gives values for crack width and length. Recommends design values for rates of air change due to infiltration in buildings heated by off-peak electricity.
Reports two-year programme to evaluate the effect of air infiltration on the heating needs of 29 electrically heated homes. Air-change rates before and after retrofitting tominimize infiltration were measured by a pressure method and heat energy consumption and occupancy effects were monitored. Thirty similar homes were also tested for infiltration and retained as controls.< Describes the retrofit methods, their effect upon the induced air infiltration, the other data which are being collected, and the data analyses which are expected at the completion of the programme.
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