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Single-stage vacuum pumps typically produce vacuum to 35 torr (mm Hg) or 47 millibars (4.7 kPa), and two-stage pumps can produce vacuum to 25 torr, assuming air is being pumped and the ring-liquid is water at 15 °C (59 °F) or less. Dry air and 15 °C sealant-water temperature is the standard performance basis, which most manufacturers use for ...
Long after King Pandukabhaya, King Parākramabāhu I had many tanks built, with one large tank called Parakrama samudraya still providing significant water for agriculture. Many rulers of Sri Lanka contributed to the development and construction of tanks all over the Raja Rata, the northern part of the country. [2]
A catchment site within the system is referred to as a wewa (වැව) in Sinhala, and this term is translated into English as "tank". [7]These tanks are connected in a series, referred to as a cascade, so that an ephemeral waterflow can be used, stored for future use, or conveyed elsewhere. [7]
During 1952 to 1957, the tank was rehabilitated by the Department of Irrigation of Sri Lanka. [2] The reservoir and hotel is situated with the Kaludiya Pokuna Forest archeological site. The reservoir measures 4.8 km (3.0 mi) and 2.3 km (1.4 mi) at its longest length and width respectively, with a catchment area of 102 km 2 (39.4 sq mi) and a ...
Sri Lanka is pockmarked with many irrigation dams, with its water resource distributed across nearly the entirety of the island for agricultural purposes via artificial canals and streams. Utilization of hydro resources for agricultural production dates back to the pre-Colonial era , with the current crop production now largely dependent on ...
Yoda Ela (Giant Canal) or Jaya Ganga, an 87 km (54 mi) long single banking water canal carrying excess water to Tissa Wewa reservoir from Kala Wewa reservoir in Anuradhapura. The Yodha Ela is known for achieving a rather low gradient for its time. The gradient is about 10 centimetres per kilometre or 6 inches per mile. [1] [2] [3]
Water arrives at the powerhouse from the dam via the 12.89 km (8.0 mi) long Upper Kotmale Tunnel, which then feeds the 793 m (2,602 ft) penstock. The initial 745 m (2,444 ft) of the penstock is single-lane, while the latter 48 m (157 ft) splits into two lanes, feeding the two 75 MW generators respectively.
Pages in category "Irrigation tanks in Sri Lanka" The following 7 pages are in this category, out of 7 total. This list may not reflect recent changes. *