Topic
Paddle
About: Paddle is a research topic. Over the lifetime, 5649 publications have been published within this topic receiving 28389 citations.
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Patent•
14 Sep 2011
TL;DR: A wave energy converter (WEC) designed to capture the predominantly horizontal (surge) water motion in near-shore waves is called a Surge-type WEC as mentioned in this paper, which consists of a moveable paddle that faces and resists the wave motion, in a way that converts the energy of wave motion into a more useful form, such as electricity.
Abstract: A wave-energy converter (WEC) designed to capture the predominantly horizontal (surge) water motion in near-shore waves is called a Surge-type WEC. A Surge-type WEC comprises a moveable paddle that faces and resists the wave motion, in a way that converts the energy of the wave motion into a more useful form, such as electricity. The challenge addressed by the present invention is the efficient capture of the energy contained in the entire water column, from the seabed to the surface. This is a challenge because the height of the water column (depth) varies both within waves and with the tide. Capture of the full water column is accomplished using a floating paddle. The top of the paddle is pinned to the water surface by buoyancy. The lower portion of the water column is captured differently in different embodiments.
14 citations
01 Jan 2011
TL;DR: Oxygen uptake values measured during paddle tennis competition reached values below 50% of maximal oxygen uptake assessed in treadmill test, whereas the mean value for heart rate during the matches represented approximately a 74% maximal heart rate reached in the same laboratory test.
Abstract: Summary Objective. — To determine the physiological demands as well as the structural characteristics of the competitive practice of paddle tennis.
14 citations
13 citations
Patent•
07 Dec 1998
TL;DR: Improved apparatus for mechanically stirring a quench-cooled subfluidized particulate bed of polymerized monomer lowers lumping of polymer particles by using substantially contiguous paddle stations disposed along the drive shaft within the reactor in combination with a plurality of sub-stations in at least one paddle station class, each sub-station having a width along the shaft of no more than 50 percent of the total width of the paddle station as discussed by the authors.
Abstract: Improved apparatus for mechanically stirring a quench-cooled subfluidized particulate bed of polymerized monomer lowers lumping of polymer particles by using substantially contiguous paddle stations disposed along the drive shaft within the reactor in combination with a plurality of sub-stations in at least one paddle station class, each sub-station having a width along the shaft of no more than 50 percent of the total width of the paddle station, and sub-station paddles attached to the shaft at each sub-station so as to sweep through the particulate bed. In some embodiments, a first class of stations is, advantageously, disposed within the reactor along a portion of the drive shaft in repeating groups of at least two stations and a second class of stations with sub-stations is disposed within the reactor along another portion of the drive shaft, preferably in repeating groups of at least one more than the number of stations in the repeating group of the first class, to further reduce lumping of polymer particles.
13 citations
Patent•
28 Dec 1999TL;DR: In this paper, an effective gap for the hot gas flow is formed between the air eddies and the housing section with a gap width (S2) which smaller than the width of the first gap.
Abstract: The paddle (24) for a gas turbine, within the turbine housing (17), has a cooling system (25) at the paddle tip to generate lateral eddies (26) of coolant air in the gap (21) between the paddle crown (11) and the housing section (18). An effective gap (27) for the hot gas flow is formed between the air eddies (26) and the housing section with a gap width (S2) which smaller than the width (S1) of the first gap (21).
13 citations