The energy penalty associated with the conditioning of large quantities of outdoor air in hot and humidclimates is well known. The problem is even more challenging when the application involved requires100% outdoor air. This is the case in an animal care facility, which houses different species ofanimals that are used for laboratory experiments in the field of life sciences. In such cases, it iscrucial that energy conserving HVAC systems be explored.
We calculate the influence of thermal mass and night ventilation on the maximum indoor temperature in summer. The results for different locations in the hot humid climate of Israel are presented and analyzed. We find that the maximum obtained indoor temperature depends linearly on the temperature difference between day and night at the site. The fit can be applied as a tool to predict from the temperature swing of the location the maximum indoor temperature decrease due to the thermal mass and night ventilation.
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