Got new furnace and addition with siding and insulation is noticeably warmer than the rest (older part of the house)What's the best way to insulate a double brick house?
Make a variable speed fan control that works off of a temperature difference between and inside and outside temperature Applications for such a device are for using in cooling a stereo cabinet or as a heat collection system for a solar heating system To cool a stereo you want a fan to come on at a slow enough speed to keep the equipment cool without making too much noiseYou also want to have two temperature measurments for inside and outside the cabinet so that when the cabinet internal temp climbs a certain number of degrees above the room temp the fan startsIf the temp continues to climb the fans switches to a faster speed A similar system can be used to move solar gain heat into a living space during winter If the sun warms the room up above room temp you start a fan to move hot air into the houseCan also be adapted to a Trombe Wall solar collector and include the operation of damper vents in addition to the fan control A variation of this would be a multizone thermostat which would allow a central heating system to control temperatures of different parts of the home Another simple project is an automatic garage door closer If you leave your garage door open and drive off, after a set amount of time a signal is sent to trigger the door to closeYou can incorporate several switches to monitor the position of the door.
