Searched for "fluids".

losses due to fluid friction are generally no longer negligible. The flow rate through the nozzle is, as on orifices, defined with the aid of Bernoulli's equation. The loses due to fluid friction and the

accordance with the size of the consumers and thus the overall need for fluid in the hydraulic system. The warming of the fluid, as well as potential leakages must be taken into consideration here. The [...] hydraulic power pack is a stand-alone assembly consisting of a drive motor, hydraulic pump and hydraulic fluid tank. The drive motor is connected to the hydraulic pump via a shaft and drives this. The motor and

Shock in the pressure fluid due to the release of kinetic energy if the flow rate suddenly stops (e.g. due to closing a valve or a piston moving against a stop). The pressure wave produced in this manner [...] correspondingly if the kinetic energy of the weight must also be retarded as well as the column of fluid.

Ability of a hydraulic fluid to cover the surface over which it is distributed to a greater or lesser degree. Hydraulic fluids with good wetting ability adhere better to the surface. As a consequence the

The oil samples needed to check the degree of contamination of hydraulic fluids must be taken in compliance with highly specific guidelines or the measurement results will not be representative for the [...] comparison with others. Apart from absolute cleanliness for all devices coming into contact with the fluid to be sampled, these guidelines also stipulate the correct place for oil sampling, i.e. somewhere

ratio of the pressure amplifier. It is possible to operate with the same pressure fluid and also with different pressure fluids (e.g. compressed air/ oil) in the two pressure systems.

be taken into account, such as: Nature of the pressure fluid and its viscosity , Maximum flow rate , Required cleanliness level of the pressure fluid ( filtration grade ), Intended temperature range, On

or frequency conversion, while on fluid-based systems a pump or a compressor is required. The drive element in electrical systems is the electric motor, and in fluid technology the cylinder or the motor

Equation defined by Daniel Bernoulli (1700—1782) in 1738 for the steady-state flow of incompressible fluids and gasses free of friction. Bernoulli’s equation is a fundamental law derived from the principle [...] between the velocity v, the pressure p and the geodetic height h in a flow. The energy of a flowing fluid: Etotal = E pot + E kin + E p = const. Potential energy = E pot = Δm · g · h Bernoulli’s equation

to give the water lubricity and corrosion protection. They usually make up 2 to 5% of a hydraulic fluid. A distinction is made between three groups: Emulsions : Concentrates based on mineral oil containing [...] Microemulsions : New type of concentrate made from a mixture of mineral oil components and synthetic fluids. Characteristics are still largely unknown.