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How much liquid should be allowed in the suction line when charging?
Wiki User
∙ 14y ago
absolutely none. there is almost no more sure way to wreck a compressor than allowing liquid into the compressor.
Wiki User
∙ 14y ago
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What should Petroleum and hazardous liquid pipeline structures include?
Pump Stations
Where should liquid teflon lubricants be applied to pipe threads?
Only apply thread sealant to the MALE threads of the pipe.
What is channeling in fluidized bed?
Channeling occurs when a fluid flowing through a bed is not evenly dispersed throughout the bed. For instance large diameter reactors have more frequent channeling problems where liquid is prone to channel along the reactor walls. Channeling should be avoided and reduces efficiency and conversion since reactants do not have proper contact with catalysts or separation media.
Does water form an azeotrope with epichlorohydrin?
A simulation in SimSci Pro/II simulator using the NTRL Liquid Activity method at 14.696 psia for 1-chloro-2,3-epoxypropane (epichlorohydrin) and water indicates that they do not. The T-x-y diagram and equilibrium x-y diagrams do not show an azetrope forming at any point. As a side note these two chemicals should be insoluble in one another so you would not generally expect an azeotrope to form. See the link for an image of the equilibrium graphs.
What is flooding and channeling in context with distillation?
Flooding and channeling are very significant terms with both gas absorption and distillation of it involves the use of packed towers. Flooding means that the gas velocity is very high, therefore, does not allow the flow of the liquid from the top of the tower, and flooding occurs on the top of it (ergo, the gas phase is not completely mixed by the water phase). The best gas velocity, should be half of the flooding velocity. For channeling, it is the unequal wetting of the packings in the tower. If channeling occurs, poor mass transfer happens, and therefore, less efficiency of the tower happens.
What is the liquid line and suction line?
The suction line is the big one. This line should be cold when the unit is on. The small line is the liquid line.
What is the correct suction pressure when charging a freezer using Refrigerant 134a?
Negative 30 psi should do it.
When charging vapor should be added to the side of the compressor.?
Liquid
AC compressor sweating?
Caused from over charging system. Should have a good sweat up to the compressor on the suction line.
When charging vapor should be added to the side of the compressor?
Liquid
How do you determine what suction pressure should be in R410a air conditioning compressor suction line?
Read the charging chart specific to the unit. Not all 410A machines will operate at identical pressures in identical conditions.
What side of the compressor should liquid be add when charging?
The low pressure side.
What should the suction pressure be on a heat pump with outside temp being approximately 34 degrees F?
Look at the charging chart in the unit for the answer.
Should you shake the freon when charging your ac?
You should just let the system take the refrigerant out of the can by itself. It is not good to force liquid r134a into the low pressure side of the ac. The suction of the compressor will draw the r134 out by itself and stabilize the system as it goes, it may just take longer than you want.
When charging liquid should be added to low side or high side?
High side, If you charge liquid on the low side it can cause the valves of the compressor to break.
How do you maintain net positive suction head of a pump?
first of all the term NPSH should be clear.It is pressure which should be available at the eye of the pump impeller,so as to avoid vaporisation of liquid. Second which arises ,how this liquid will vaporise?Ans-if a vapour pressure of a liquid falls at constt temperature or temperature of liquid is raised at constt pressure it vaporises.In case of pump it's mostly the first case. Now,how to manitain NPSH. NPSHa> NPSHr (always) where NPSHa= available NPSH NPSHr = Required NPSH NPSH = Hps+Hsl-Hvp-Hfl Hps= pressure acting on the eye due to pressure in the suction drum. Hsl = pressure acting due to height of liquid in the suction line. Hvp= vapour pressure of the liquid Hfl= head loss due to friction losses Thus, to maintain the NPSH, variables in hand are,Hps and Hsl.increase the height of the suction line or increase the pressure of the suction drum.
How do you measure fre-on?
On smaller residential air conditioners the manufacturer publishes a charging chart that has the outside air temperature and the corresponding suction and liquid pressure measured by a refrigeration manifold set, gauges. If the chart is not available, you can estimate by measuring the suction pressure and then using a pressure temperature chart for your refrigerant and trying to maintain a 35 degree to 40 degree temperature at the condensing unit or compressor. The other measurement on larger units is the subcooling measurement, measure the actual liquid line temperature and compare the liquid pressure using a pressure temperature chart and also checking for bubbles in the liquid line sight glass. On larger systems after the subcooling has been checked then the superheat has to be checked and the thermostatic expansion valve adjusted if necessary. To check the superheat, measure the suction pressure, convert to a temperature and then measure the actual suction line temperature. The difference is the superheat, should be 6 to 20 degrees depending on the system.
