Detailed radon measurements and ventilation testing were carried out in five residential premises in Hong Kong. Continuous radon detectors were located in the bedrooms of each site and corresponding C02 decay tests were conducted to estimate the ventilation rate. Four air-conditioning operation modes were used in the measurements. Data obtained from the measurements were used to verify the validity of a simple mass balance model.
Natural night-time ventilation is often used to pre-cool low energy buildings, but can lead to security risks and weather damage. A prototype night ventilator has been built to combat such problems, but how has it performed in field tests?
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