Many hygroscopic (moisture-absorbing) materials can be used as relative-humidity sensors. Such materials absorb or lose moisture until a balance is reached with the surrounding air. A change in material moisture content causes a dimensional change, and this change can …

Comparison of electrical, hydraulic and pneumatic systems can be done in aspects like energy source, energy storage, energy cost, distribution system, linear actuators, rotary actuators and controllable force. S.no Aspect Electrical Hydraulic Pneumatic …

Water hand pumps are manually operated pumps. They are used to bring water from the earth underground to the earth's surface and are used in every country for various industrial, marine, irrigation, and household purposes. The image shown below is the typical desig…

Hydraulic turbines are Machines that convert hydraulic energy into mechanical energy. The mechanical energy runs an electric generator directly coupled to the turbine's shaft. The generator generates electric power, sometimes known as hydroelectric power. Generall…

Comparisons between Reciprocating and Rotary Compressors can be made in aspects like pressure ratio, handled volume, speed of the Compressor, vibrational problem, size, air supply, purity of compressed air, compression efficiency, maintenance, mechanical efficiency, l…

A simple open-cycle gas turbine consists of a compressor, a combustion chamber and a turbine, as shown in the figure below. The compressor takes in ambient fresh air and raises its pressure. Heat is added to the air in the combustion chamber by burning the fuel and ra…