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No, pump discharge pressure is not necessarily equal to stuffing box pressure. The discharge pressure refers to the pressure at the outlet of the pump, while stuffing box pressure is the pressure within the stuffing box where the pump shaft passes through. The stuffing box is designed to prevent leakage and can experience different pressure levels due to factors like friction and the sealing material used. Typically, the stuffing box pressure is lower than the discharge pressure, especially if the packing is providing effective sealing.
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What happen if discharge of centrifugal pump closed?
if the discharge of centrifugal pump is closed the pressure is built up in it and after some time it will burst up
Where is suction and discharge s?
Answer: The terms suction and discharge are the terms refer to hydraulics. In hydraulics if the the liquid has to be lifted or pumped to the usage area the hydraulic pump will be used . This pump will have to functions that is first suction to lift the fluid and the discharge or delivery . The familiar words in pair are lift and discharge; suction and discharge. The specification of pump for these terms are suction head and discharge head.AnswerThe suction pressure refers to the pressure of the referigerant being "sucked" back into the compressor. The suction pressure is a critical variable in ensuring the accuracy of the refrigerant charge, along with the tepmerature of that line as well. The "superheat", or heat added to the vapor in that line can be monitored in this manner.You have not mention which suction pressure... Actually Where ever the suction is presented that pressure is called suction pressure.... and suction pressure in practical cases normally always less that atmospheric pressure and in case of delivery pressure it is oppositeSaying that suction pressure is " the pressure of the referigerant being "sucked" back into the compressor " is not accurate.Simply , the suction pressure of a pump is the absolute pressure of a fluid , measured at the inlet of the pump ( in your answer , the pump is the compressor , and the fluid is whatever refrigerant. )The discharge pressure , is the absolute pressure of the liquid measured at the outlet of the pump.Obviously, the discharge pressure is usually bigger than suction pressure.
Relation between power and discharge of a reciprocating pump?
The power required by a reciprocating pump is directly proportional to the discharge it produces. When the discharge increases, the power needed to maintain that flow rate also increases. This relationship is governed by the pump efficiency and the pressure head against which the pump is operating.
What is Static Discharge Head?
Static discharge head refers to the pressure at the pump discharge outlet, which is created by the pump's rotation and used to overcome the system's resistance to flow. It is a critical parameter in pump performance calculations and determines the pump's ability to push water through the system. Static discharge head is influenced by factors such as pump design, speed, and the system's piping configuration.
Why is used the balancing line in boiler feed pump and its direction of flow?
In boiler feed pumps usually the discharge pressure is 20 to 30 times tie suction Pressure so to protect the pump balancing line is given from discharge to suction.
What is pump surging?
Pump surging - if a pump doesn't have a minimum flow it will build up discharge pressure. When this discharge pressure gets high enough the pump cannot overcome it any more and the water starts to flow backwards. When the water starts to flow backwards, the pump slows down. The impeller will start to spin backwards building up pressure again. The water inside the pump will shift back and forth wreaking havoc with your pump impeller. This cycle of spinning forwards and backwards will repeat itself and will destroy your thrust bearing and destroy your pump. This can happen with any type of centrifugal pump, if you block the discharge the pump will build up pressure and surging can take place.
What is a stuffing box in a pump?
The packing gland
When the pump is not running what is the water pressure at the output pipe of the pump?
When the pump is not running, the water pressure at the output pipe of the pump will be equal to the static pressure of the water source acting on the pipe. This static pressure varies depending on the elevation and depth of the water source.
What do you mean by head of pump?
Total pump head is the sum of suction and discharge pressure in mtr. ie. 1 bar =10.33 metres of water column
What is the suction pressure of condensate extraction pump?
Condensate pump suction pressure below 4 feet of the condenser is almost equal to condenser pressure (760mm of Hg). If the pump equiped under the deep pit , suction pressure is vary.
Why you have to connect the pressurization unit pipes to the pump suction of the chilled water pump and not to discharge header?
As the chilled water system is a close system and basically consist of two loops i.e one loop from pump discharge to load & second loop from load to pump suction.Now,the effect of pressure drop will be more prominent in the second loop ,after the flow exit the load.Hence we have to alleviate the pressure where the effect of pressure loss & small water requirement is more prominent and i.e the suction side of the pump.
What is unit of differential pressure?
Let me differentiate first between design pressure and mechanical design pressure. Design (or discharge) pressure is the pressure at the outlet of the pump, the pressure you've designed the pump to deliver. The mechanical design pressure is a value that the pump casing and downstream piping have to be able to withstand as a minimum*. I presume you mean design pressure as discharge pressure. In this case, differential pressure is the difference between the discharge pressure and the suction pressure (the pressure at the inlet of the pump**). * this is calculated taking into account that a pump would be working against a 'blocked discharge' or a closed valve in the outlet piping ** imagine a reservoir filled with liquid
