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The boat sunshade (dimensions in mm).

The boat sunshade (dimensions in mm).

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Figure 1: Two halves of the steel ring, dimensions in mm.
Figure 2: The boat sunshade (dimensions in mm).
Figure 3: Boat building steps
Figure 4: Top view of the Water Piston Engine (dimensions in mm).
+7 Figure 5: The Water Piston Engine compared to the internal combustion...
SOLAR BOAT USING WATER PISTON ENGINE PROPULSION
Conference Paper
Full-text available
  • Apr 2018
This paper describes a solar energy system for boats, encompassing a novel Water Piston Engine propulsion. It is an environment friendly marine boat with negligible noise. The primary source of power is solar energy that powers an air compressor whose compressed air is used in the novel engine. The Propulsion system is based on a novel engine calle...
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... steel tubes (40mm X 40mm) are used to form the boat sunshade; the maximum height of the sunshade is 2 m. Dimensions of the sunshade are shown in Figure 2. The sunshade surface area is 9 m 2 , but the wind projected area is 1.44 m 2 . ...

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... Solar energy is the primary source of power in the boat. The minimum thrust that can propel this boat is equal to 192 N [14]. ...
Water Piston Engine for Marine Vehicle Propulsion
Conference Paper
Full-text available
  • Jul 2019
This paper describes an environment friendly propulsion system with negligible noise. The Propulsion system is based on a novel engine called a water piston engine. All moving parts in the classical internal combustion engine are eliminated; the piston, connecting rod, and crankshaft. Also, cams and follower valves are replaced by solenoid valves which inject compressed air into the cylinders. A water column in the cylinder is used to replace the metallic piston. The water column itself inside the cylinder acts as a piston. This Water Piston Engine is powered by pressurized air only. So, a pressure vessel is used to store compressed air. The Pressure derived from the compressed air tanks is directly used in providing thrust by pushing the water out of the cylinder through a 90-degree elbow as a water jet. When the water is ejected from the cylinder and the air pressure inside the cylinder decreases to near atmospheric, the water that surrounds the engine fills the cylinder. Four cylinders are used; each two cylinders are fired simultaneously in order to maintain thrust. This system uses an Arduino microcontroller unit to deal with how much time the pressurized air is needed to discharge the cylinder and to switch the airflow between the engine cylinders. Several field tests have been made in a lake. The experimental data were compared to the theoretical based data in addition to simulate this model using Ansys fluent. The advantages of this novel engine over internal combustion engines are clarified. Videos of the experiments are recorded.
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