Pipeline transport of pipelines. The Great Manmade River of Libya supplies of water each day to Tripoli, Benghazi, Sirte, and several other cities in Libya. The pipeline is over long, and is connected to wells tapping an aquifer over underground. District heating or "teleheating" systems consist of a network of insulated feed and return pipes which transport heated water, pressurized hot water, or sometimes steam to the customer. While steam is hottest and may be used in industrial processes due to its higher temperature, it is less efficient to produce and transport due to greater heat losses. Heat transfer oils are generally
Northern Lights (pipeline) by the Vukhtyl gas field, but later the pipeline was extended in order to connect with the Urengoy gas field. The Northern Lights pipeline system has a total length of , of which around is used to transport Russian gas to Europe. The pipeline runs from the Urengoy gas field through Vuktyl, Ukhta, Gryazovets, Torzhok and Smolensk to Minsk in Belarus and from there to Poland, Ukraine and Lithuania. A part of the newer Yamal–Europe pipeline runs parallel to the Northern Lights pipeline. A branch line from Gryazovets through Saint Petersburg to Vyborg supplies the Saint Petersburg area and Finland.