These have a inverse relation. You will need to know the discharge and the incoming pressure in order to find out the mass flow rate.
velocity and pressure have inverse relation. when velocity increases then pressure at that point decrease and vice versa.
Atmospheric pressure is the surrounding pressure around us. We live in the atmosphere and treat the atmospheric pressure as the base pressure. A pressure gauge would read 0 at atmospheric pressure. When we define the pressure in scientific way of absolute pressure, we need to add up an atmospheric pressure to the measured pressure.
*Axial compressors are rotating, aerofoil based compressors in which the working fluid principally flows parallel to the axis of rotation. This is in contrast with centrifugal, axi-centrifugal and mixed-flow compressors where the air may enter axially but will have a significant radial component on exit. *Axial flow compressors produce a continuous flow of compressed gas, and have the benefits of high efficiencies and large mass flow capacity, particularly in relation to their cross-section. They do, however, require several rows of aerofoils to achieve large pressure rises making them complex and expensive relative to other designs (e.g. centrifugal compressor). *Centrifugal fan/blowers are more suited to continuous-duty applications such as ventilation fans, air movers, cooling units, and other uses that require high volume with little or no pressure increase. In contrast, multi-stage reciprocating compressors often achieve discharge pressures of 8,000 to 10,000 psi (59 MPa to 69MPa). One example of an application of centrifugal compressors is their use in re-injecting natural gas back into oil fields to increase oil production. Centrifugal compressors are often used in small gas turbine engines like APUs (auxiliary power units) and smaller aircraft gas turbines. A significant reason for this is that with current technology, the equivalent flow axial compressor will be less efficient due primarily to a combination of rotor and variable stator tip-clearance losses. There are few single stage centrifugal compressors capable of pressure-ratios over 10:1, due to stress considerations which severely limit the compressor's safety, durability and life expectancy. *Compressor section location depends on the type of compressor. In the centrifugal-flow engine the compressor is between the accessory section and the combustion section; in the axial-flow engine the compressor is between the air inlet duct and the combustion section. *Centrifugal-flow compressors have the following advantages: * High pressure rise per stage. * Efficiency over wide rotational speed range. * Simplicity of manufacture with resulting low cost. * Low weight. * Low starting power requirements. They have the following disadvantages: * Large frontal area for given airflow. * Impracticality if more than two stages because of losses in turns between stages. **Axial-flow compressors have the following advantages: * High peak efficiency. * Small frontal area forgiven airflow. * Straight-through flow, allowing high ram efficiency. * Increased pressure rise due to increased number of stages with negligible losses. They have the following disadvantages: * Good efficiency over narrow rotational speed range. * Difficulty of manufacture and high cost. * Relatively high weight. * High starting power requirements (this has been partially overcome by split compressors).
The relation between density and pressure can be understood well with the help of the following derivation. Force = Mass x Acceleration →1 Pressure = Force / Area » Force = Pressure x Area →2 Equating 1 & 2 Pressure x Area = Mass x Acceleration Pressure = Mass x Acceleration / Area →3 Density = Mass / Volume » Mass = Density x Volume Eqn. 3 Becomes Pressure = Density x Volume x Acceleration / Area →4 i.e., Pressure is directly proportional to density.The relationship between density and temperature is the higher the temperature, the less the density.
0.5 meter is not an area, that's a length. In general, the relation is: pressure (in pascal) is force (in newton) divided by area (in square meters).
the relay in the compressor helps it to respond to pressure increase or decrease process in relation to a gas.
A reciprocating compressor is basically a piston pump, much like if you'd take an average internal combustion engine and force it to run. A scrolling compressor uses two plates with a spiral-wound raised ledge on them. The ledges overlap and as they move in relation to each other air gets squeezed further and further into the labyrinth until it reaches the outlet port.
The low pressure port is usually close to the compressor, on the larger of the two lines, and on the suction side of the compressor. The high pressure port is the smaller of the two and could be anywhere inside the engine compartment but usually along the firewall. The location of the hoses and ports depends on where the compressor is mounted in relation to the AC unit inside the car.
Someone please correct me if I am wrong, but ZP is in relation to the thermal expansion valve. This valve limits pressure and flow through the evaporator. Sporlan uses SZ and SZP to designate the thermostatic charge and is related to refrigerant r404a. Can anyone explain what the S is in relation to?
There is definitely a strong relation between osmosis pressure and water activity. Osmosis is the movement of water from high pressure to low pressure.
Friction is directly proportional to pressure.
An increase in temperature leads to an increase in pressure.
Pressure is defined as force per area
Pressure decreases as height increases and vice-versa.
Pressure = force / area
yes.
There is none.