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An energy tower (also known as a downdraft energy tower, because the air flows down the tower) is a tall (1,000 meters) and wide (400 meters) hollow cylinder with a water spray system at the top. Pumps lift the water to the top of the tower and then spray the water inside the tower. Evaporation of water cools the hot, dry air hovering at the top.
The Hybrid Trimaran Project, known fully as the "Hybrid Trimaran Fast Craft Passenger Cargo Vessel using Multi-Engine and Alternative Energy Source from Ocean Waves", [1] was a concept by Filipino engineer Jonathan Salvador of Metallica Consultancy [2] [3] and is intended to come up with a design for a ship which has a "modern design, environment-friendly, safe and unsinkable". [4]
As of year 2000 it was the largest solar-powered ship in the world. [5] Avalon solar cruise boat at Thriprayar, Kerala. [6] [7] In operation since 2022. Barracuda, India's Fastest Solar-electric Boat, [8] 12 passenger work boat is operating in Mumbai, Maharashtra, India. It was launched in Kochi in December, 2023. [9]
The 27-metre-long and 7-metre-wide boat is covered by 125 square metres (1,350 sq ft) of solar panels rated at 25 kW, which in turn connect to two electric motors of 20 kW, one in each hull. [3] There are 1500 kg of lithium-ion batteries in the ship's two hulls with a total capacity of 80 kWh.
In 2025, Kara Solar will launch a new project on the Kapawari River, in Pastaza, eastern Ecuador, that aims to replace 50 gasoline-powered boats with solar-electric ones.
A pump boat (usually variation as pambot in local languages) is an outrigger canoe (bangka 'boat') native to Southeast Asia powered by a small gasoline or diesel engine. Smaller pump boats might be powered by the sort of small single-cylinder engine used to drive a water pump. Larger ones are often powered by recycled automobile engines. [1]
"Research Guides: Philippines: Philippine Boats & Navigation". University of Hawaiʻi at Mānoa Library. Archived from the original on February 15, 2017
BRP Gregorio del Pilar (PF-15), arrives at Joint Base Pearl Harbor–Hickam during a scheduled port visit. (July 2011) USCGC Hamilton (WHEC-715) BRP Gregorio del Pilar (PS-15) is the lead ship of her class of offshore patrol vessel of the Philippine Navy.