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What will recovering refrigerant from a system in the vapor phase minimize loss of?
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How does the failure of the compressor in a refrigerator affect the heat transfer cycle?
When the compressor fails, the high vapor pressure refrigerant is no longer condensed. Without a phase change of the refrigerant is refrigerator will not cool.
What is the difference between phase equilibrium and metastability?
For the condition of phase equilibrium the free energy is a minimum, the system is completely stable meaning that over time the phase characteristics are constant. For metastability, the system is not at equilibrium, and there are very slight (and often imperceptible) changes of the phase characteristics with time.
What are you conclusions about the phase relationship between the driver and the oscillator below and above resonance?
For small frequency of forced oscillation , the phase angle between the forced oscillator and driver is nearly zero . As the driving frequency increases the phase angle increases and is equal is PI/2 ,when both the frequencies (frequency of force and frequency of system for oscillation) are equal. For very large frequency of driver , they are out of phase.
What is the systm volume and what is the dead volume and what is the wide volume and what is the delay volme in HPLC?
system volume is amount of mobile phase travel from reservior to tip of the colomn . dead volume is the amount of mobile phase present in colomn. delay volume is amount of mobile phase used in at the time of injection and the time of detection of chromatogram.
Is walking a in-phase oscillation or out of phase oscillation?
out
You can save time recovering the refrigerant from a system by removing as much as possible in the what phase?
liquid
What role does a compessor play in a refrigeration system?
In vapour compressor refrigeration system the low pressure and temperature vapour refrigerant from evaporator is compressed. where it is compressed to a high pressure and temperature. From compressor refrigerant goes to condenser where where it changes the phase. from condenser refrigerant goes to evaporator through expansion device.
Describe refrigerant properties of density?
A refrigerant is a compound use in a heat cycle that undergoes a phase change from a gas to a liquid and black
Why the 3 phase of high voltage conductor or cable transposed?
3 phase cable is transposed to minimize the effect of leakage/capacitance current.
How much gas put at single phase split ac compressor?
It's depend on refrigerant.
In a modern industrial plant the most likely polyphase power system in use is a A. one-phase system. C. three-phase system. B. two-phase system. D. four-phase system.?
A "three-phase system" is a polyphase system having three phases. The term "polyphase system" just means a system having multiple phases. If it is used by itself, "a polyphase system" doesn't mean "a three-phase system".
Why is subcooling desirable?
It increases the efficiency of the system since the amount of heat being removed per pound of refrigerant circulated is greater. In other words, you pump less refrigerant through the system to maintain the refrigerated temperature you want. This reduces the amount of time that the compressor must run to maintain the temperature. The amount of capacity boost which you get with each degree of subcooling varies with the refrigerant being used. Subcooling is beneficial because it prevents the liquid refrigerant from changing to a gas before it gets to the evaporator. Pressure drops in the liquid piping and vertical risers can reduce the refrigerant pressure to the point where it will boil or "flash" in the liquid line. This change of phase causes the refrigerant to absorb heat before it reaches the evaporator. Inadequate subcooling prevents the expansion valve from properly metering liquid refrigerant into the evaporator, resulting in poor system performance.
What is code optimization phase?
Optimization compiler is a compiler that can minimize or maximize attributes of an executable computer program. It is most common to minimize the time that is taken to execute a program.
How does the failure of the compressor in a refrigerator affect the heat transfer cycle?
When the compressor fails, the high vapor pressure refrigerant is no longer condensed. Without a phase change of the refrigerant is refrigerator will not cool.
Why 3 phase ac systems is preferred to 4 phase?
3 phase system has more power than a single phase system
How does a two-phase system differ from a three phase system?
A two-phase system is archaic and you are unlikely to find it in use anywhere these days, so it is mainly of historical interest. A two-phase, three-wire system, consists of two phase voltages, displaced from each other by 90 electrical degrees, and a phase voltage which is 1.414 x phase voltage.A three-phase system consists of three phase voltages which are displaced from each other by 120 electrical degrees. In the case of a three-phase, three-wire, system, the line voltages are numerically equal to the phase voltages; in the case of a three-phase, four-wire, system, the line voltages are 1.732 x phase voltage.
What is Electricity use difference between 3 phase and 1 phase?
A two-phase a.c. system is an archaic system, in which two phase voltages are generated 90 electrical degrees apart. It has nothing whatsoever to do with the US 'split phase' system that supplies North American homes. A two-phase system can be a four-wire system, or a three-wire system, and was useful because, unlike a single-phase system, it could create naturally rotating magnetic fields in induction motors. It has long been superseded by the three-phase system.
