By measuring and monitoring the pressure within the boiler, certain controls can be added to the boiler, like a relief valve or signal that reduces the heat applied to the boiler in order to avoid a catastrophic event.
It also includes data on the pressure insidethe hoses connecting the petrol pumps to the automobiles, and on the temperature and petrol level inside the underground tanks.
The pressure regulator(4) monitors the pressure in the pneumatic system and optionally(deviation from the desired parameters) affects the electric throttle superchargers 5.
Reciprocating pumps work on the principle of a chamber expanding and contracting to change the pressure within the pump to draw fluids in, and then direct it out the discharge.
If the pressure in the pilot chamber of the tested valve is externally controlled, the bypass valve 3b can be quickly connected to make the measured 6 unloaded.
Because the reactor had been shut down a long time ago, the decay heat had decreased to a significantly lower level, so the pressure in the plant stabilized, and venting was no longer required.
In particular, when three or more batteries are connected in series, the battery that expires first due to slight variations in performance is forcibly discharged by the other batteries, reaching an over-discharged state. As a result, the pressure inside the battery tends to increase as gases are generated.
Petrie et al. now show that when the complex of actin and myosin contracts, it controls the pressure within cells and therefore the shape of those protruding structures(see the Perspective by DeSimone and Horwitz).
When air conditioners and refrigerators are repaired or scrapped, the Freon inside the units is removed using a Freon recovery machine, and the recovered Freon is compressed and pumped into special cylinders. However, the heat generated by compressing the Freon causes the pressure inside the cylinders to increase, which results in a decline in the efficiency of filling the cylinders, and a consequent increase in the time required for Freon recovery.
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