| Adiabatic Processes in Atmosphere: |
When a parcel of air is moved from one atmosphere to another in a building, with respect to the ambient air, in such a manner that energy does not flow across boundaries, thermal changes taking place are said to be adiabatic changes. Education Notes: Any process in the buildings atmosphere occurring adiabatically is known as an adiabatic process. In water damaged buildings, for example, temperature and humidity are important. The adiabatic process during which the air involved in non-effected areas (the parcels of air remaining unsaturated during the drying process) are relatively simple and they do not effect the humidified air parcel directly. the adiabatic processes involving condensation or evaporation through dehumidification are considerably complicated by heat of condensation. Monor temperature and humidity changes within static air may not be important, but the same changes in moving air may be significant. This method of measurement of heat or the absence of heat in a water damaged atmosphere of a building, for example, is based on the first law of thermodynamics. Author's Note: The author placed this brief discussion about adiabatic processes purposely to bring attention to the reader, the seriousness about understanding building and restorative drying processes and methods and the dynamics required to dry a wet building properly. It is also reasonable to help technicians recognise that the use of a moisture probe or a moisture stick is only the tip of the iceberg, when attempting to understand physics and natural laws of thermodynamics. The author is not attempting to have the subject fully discussed, but is bringing the subject up for the reader to investigate further. See Adiabatic, Entropy |