House heating is responsible for substantial energy consumption in industrialized
countries. However, the climate control in detached houses is often sub
optimally done. These climate controllers are usually composed by subsystems
that have limited information about the state of the building. Improvements
usually requires large investments from the house owner, unless new sensor networks
technologies are adopted.
In this Master thesis, how to improve the eciency of house heating using
instant messaging (IM) is investigated. Devices in an inhabited house have been
congured to be connected by an IM client. This allows to perform automatic
control through a simple software. The dynamical model of the heating and
cooling system is studied and the relevant sensor measurements are identied.
The possible reduction in heat consumption is quantied by simulations. It is
shown that the method is applicable, and that it can result in a reduction of the
heat consumption in detached houses, even by using a small subset of potential
2014. , 31 p.