Perpar, Matjaz; Rek, Zlatko; Bajric, Suvad; Zun, Iztok - In: Energy 44 (2012) 1, pp. 197-210
The research refers to the district heating (DH) system in Ljubljana, which includes 245km of highly diversified pipelines. The purpose of this study was to determine the effect of the soil thermal conductivity coefficient (λs) on the heat loss from pre-insulated pipes during operation....