System and method for pre-cooling of buildings
AssigneeDavis Energy Group, Inc.
InventorsDavid A. Springer, Leo I. Rainer
Life of this patent
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Abstract
A method for nighttime pre-cooling of a building comprising inputting one or more user settings, lowering the indoor temperature reading of the building during nighttime by operating an outside air ventilation system followed, if necessary, by a vapor compression cooling system. The method provides for nighttime pre-cooling of a building that maintains indoor temperatures within a comfort range based on the user input settings, calculated operational settings, and predictions of indoor and outdoor temperature trends for a future period of time such as the next day.
Claims10
A method of pre-cooling a building, comprising:
- ventilating and cooling a building with outside air if a current outside temperature is lower than a current inside temperature by a set amount, and if the current indoor air temperature is greater than a calculated ventilation cooling low limit temperature;
- operating a vapor compression air conditioner, if a current time of day is between an air conditioner pre-cooling start time setting and an air conditioner pre-cooling stop time setting, and if the current indoor air temperature is greater than a calculated air conditioner pre-cooling low limit temperature that is greater than the calculated ventilation cooling low limit temperature;
- measuring and storing outdoor and indoor temperatures and temperature trends;
- and
- calculating and resetting operational settings based on user settings and indoor and outdoor temperatures and temperature trends, the calculated operational settings including at least fan speed, ventilation cooling low limit temperature and air conditioner pre-cooling low limit temperature.
Dependencies are inferred from the claim text.