Annualized Geo-Solar (AGS) is an approach to heating and cooling buildings which has not entered mainstream construction practice, yet holds promise for improving the energy performance of buildings in all climates. AGS is a method of balancing seasonal temperature different
Annualized Geo-Solar (AGS) is an approach to heating and cooling buildings which has not entered mainstream construction practice, yet holds promise for improving the energy performance of buildings in all climates. AGS is a method of balancing seasonal temperature differentials by capturing and storing summer heat in a thermal mass medium and re-radiating it back into the climate-controlled space as needed during the following season. AGS is an extension of the logic of passive solar design where the same process is employed on a diurnal cycle. Where passive solar designs are inherently limited by site requirements for adequate southern exposure, and more importantly, by harsh climates with protracted sunless periods, AGS is a more widely deployable technology.
Water is an ideal collection medium, though as in the diagram above, air also works for lower cost systems. Using low-energy solar pumps or thermo-siphoning, solar collectors are placed in full sun to heat wa