This BRE Report gives a guide to the use of infra-red thermography as a means to investigate the thermal properties and hidden constructional details of building envelopes. An introduction is given to infra-red thermography, the operation of the camera and the difference between photography and electronic thermography. The guide describes the aims and requirements for carrying out an infra-red survey and discusses thermal analysis and application of the results.
This study assessed the effectiveness of permanent but controllable background ventilators in naturally ventilated, office-type buildings with different envelope tightness. It was shown that, during the heating season, it is possible to provide adequate background ventilation for occupant comfort by incorporating commercially-viable, manually-controllable trickle ventilators within each room.
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