Weather responsive smart ventilation system using multiple optimization parameters

A method of optimizing ventilation flow rates, comprising:

• measuring, for each hour of a twenty-three consecutive hour period, a temperature difference by:
• measuring an indoor temperature in a building employing the steps of optimizing ventilation flow rates over the twenty-three consecutive hour period;
• providing an average outdoor temperature in an environment surrounding the building over the twenty-three consecutive hour period;
• and
• calculating a difference between the indoor temperature and the outdoor temperature;
• measuring, for each hour of the twenty-three consecutive hour period, a moisture level difference by:
• measuring an indoor moisture level in the building over the twenty-three consecutive hour period;
• providing an average outdoor moisture level in the environment surrounding the building over the twenty-three consecutive hour period;
• and
• calculating a difference between the indoor moisture level and the outdoor moisture level;
• calculating an average residual sum of squares value over the twenty-three consecutive hour period by calculating for each hour of the twenty-three consecutive hour period, a residual sum of squares value based on the difference between indoor and outdoor temperatures for each hour and the difference between indoor and outdoor moisture levels for each hour, and averaging the residual sum of squares values;
• measuring, for an instantaneous hour-long period subsequent to the twenty-three consecutive hour period, an instantaneous residual sum of squares value based on a difference between an instantaneous indoor and outdoor temperature level and an instantaneous indoor and outdoor moisture level;
• and
• optimizing a ventilation flow rate by calculating a time-related fan flow equal to a target fan flow multiplied by a ratio of the average residual sum of squares value to the instantaneous residual sum of squares value,
• wherein, based on a determination that the instantaneous residual sum of squares value is greater than the average residual sum of squares value, the ventilation flow rate is optimized by slowing the time-related fan flow until a subsequent hour-long time period that is associated with a second instantaneous residual sum of squares value that is less than the average residual sum of squares value.