Thermal conditions in the ground from the viewpoint of foundation work, heating and plumbing installations and draining

摘要

Various kinds of pipelines, such as those for water mains, sewerage and drainage, have to be laid out at a depth where the ground will not freeze. Calculation of the heat losses in remote heating ducts requires knowledge of the thermal conditions in the ground. Heating systems based on the heat pump principle mostly employ the heat stored in the ground for their heat source.nThe present investigation was instigated by a study of the floor heating of buildings erected upon a concrete slab poured directly on the ground, which the author has carried out in the State Institute for Technical Research in Finland.