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Optimum length of underground tunnel and corresponding annual heating/cooling potentials
Author(s) -
Sodha M. S.,
Sharma A. K.,
Sawhney R. L.
Publication year - 1990
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440140308
Subject(s) - dimensionless quantity , glazing , shading , environmental science , materials science , mechanics , meteorology , geotechnical engineering , engineering , composite material , physics , art , visual arts
Abstract Dimensionless optimum lengths of an underground tunnel, for which annual heating potential (HPD) and annual cooling potential (CPD) per unit tunnel length are maximum, have been obtained in terms of dimensionless parameters. The effect of different earth‐surface treatments (shading, wetting, blackening and glazing) over the tunnel on the optimum tunnel length and corresponding values of HPD/CPD for three climates, namely hot‐dry, composite and cold‐dry, prevalent in the country have also been evaluated.