I use an algorithm with cooling that runs the A/C more at night when its cool outside and also in the mornings and then less when its at the peak heat outside.. saving energy because of lower head pressures and more heat transfer from the condensor...
example: target temp is 74 at night 76 occupied day, 78 unoccupied.. so in the early AM when everyone leaves the house the A/C cools down to 73.. then at 10am(or if outside temp goes up quickly) the setpoint is raised to 74.. then raised at 11am to 75, noon to 76, 1 pm to 78.. notice the trend.. the A/C is allowed to warm up a little each hour so that the system runs less and less as it gets warmer outside... by the time occupants arrive at 7 or so pm its begun to cool off outside and so dropping from 78 to evening 76 is easily handled.. then after sunset for bedtime the system drops to 74.. so most of the heavy cooling is done when the sun is down...
although I surely dont understand the idea of saving energy to the point of changing comfort level like the above post.. i want my system to run and keep me comfortable.. not wearing 6 layers of sweaters or having to wear shorts to stay cool...
-Christopher
example: target temp is 74 at night 76 occupied day, 78 unoccupied.. so in the early AM when everyone leaves the house the A/C cools down to 73.. then at 10am(or if outside temp goes up quickly) the setpoint is raised to 74.. then raised at 11am to 75, noon to 76, 1 pm to 78.. notice the trend.. the A/C is allowed to warm up a little each hour so that the system runs less and less as it gets warmer outside... by the time occupants arrive at 7 or so pm its begun to cool off outside and so dropping from 78 to evening 76 is easily handled.. then after sunset for bedtime the system drops to 74.. so most of the heavy cooling is done when the sun is down...
although I surely dont understand the idea of saving energy to the point of changing comfort level like the above post.. i want my system to run and keep me comfortable.. not wearing 6 layers of sweaters or having to wear shorts to stay cool...
-Christopher
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