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What is the diesel reid vapour pressure?
2 kpa
What is the Reid vapour pressure of gasoline?
Reid vapor pressure (RVP) of gasoline is the vapor pressure at 100°F.
How do you calculate vapour pressure from an EOS?
Use the Equation of State (EOS) in combination with the Antoine's Equation to determine vapor pressure.
What is anti sweat insulation?
Anti sweat insulation means to prevent condensation of atmospheric water vapour on the surface of pipe is called anti sweat insulation.
What is the optimum Reid Vapour Pressure while transporting crude oil?
The optimum Reid Vapour Pressure (RVP) for transporting crude oil typically ranges between 8 to 12 psi, depending on the specific characteristics of the crude and regulatory requirements. Maintaining this range helps minimize the risk of vaporization and ensures safe transport while reducing emissions. Higher RVP values can lead to increased volatility and potential handling issues, while lower values may indicate heavier, less desirable crude. Ultimately, the target RVP should balance safety, regulatory compliance, and the physical properties of the crude oil.
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.
What is Vapour absorption machine?
A Vapour Absorption Machine (VAM) is a type of refrigeration system that operates on the principle of heat absorption. It uses a refrigerant-absorbent pair to produce cooling by absorbing heat from a space and releasing it elsewhere. VAMs are commonly used in industrial applications and areas where waste heat or low-grade heat is available.
Which refrigerant is used in vapour absorption system?
In a vapor absorption system, the most commonly used refrigerant is ammonia (NH3). Ammonia is favored for its high efficiency and low environmental impact when compared to some other refrigerants. In some systems, water can also be used as a refrigerant, particularly in applications like chillers. The choice of refrigerant often depends on the specific application and environmental regulations.
What happens if vacuum is 10 mm Hg in Vapour absorption machine?
If the vacuum in a vapor absorption machine is 10 mm Hg (millimeters of mercury), it indicates a low-pressure environment inside the machine. This low pressure allows for the vaporization and absorption of the refrigerant in the system. Maintaining the vacuum at this level is crucial for the efficient functioning of the vapor absorption machine.
How do you calculate the efficiency of vapour absorption machine?
how to calculate the vapour absorption mechine efficiency and per TR steam consumption
What is suction and discharge superheat?
Suction superheat is the heat added to the refrigerant above that required to change its state from liquid to vapour (as happens in the evaporator). This heat is added both in the evaporator, in the suction line and (where applicable) in the suction accumulator.Discharge superheat is suction superheat plus heat of compression, and must be removed in the condenser before condensation, the change of state from vapour to liquid, can occur.The HVAC Veteran
What is the function of absorber in the vapour absorption system.?
in orde to reduce the pressure........cming from the evaporator
What is the function of absorber in vapour absorption refrigeration system?
in orde to reduce the pressure........cming from the evaporator
Which gas molecules if any are primarily responsible for the absorption of visible light?
In a gross sense, the water vapour in clouds is has the greatest effect.
What are examples of atomic absorption spectroscopy?
When white light from mercury vapour lamp is passed through sodium vapour then we have as outcome a continuous spectrum of colours with two black lines in the yellow-orange region. These two lines stand for the absorption of 5890 A and 5896 A lines of sodium atom Another example is Fraunhofer lines seen in the continuous spectrum got from sun. These lines are due to absorption of characteristic frequencies of metals present in the chromosphere of the sun
Why do you need to recharge the refrigeration system?
usually the refrigerant you have pumped out of the system is contaminated (either liquid/air) contaminated refrigerant is less efficiant and will lead to a short system life. refrigerant is works kind of like the rain in a water cycle. The system starts at the compresser (the heart of the system) pushing refrigerant in to the condenser (like condensation in the clouds) condensing to a liquid and heads toward the metering device (raining) The metering devise rapidly lowers the pressure of the system into the evaporator (get the picture already?) where the refrigerant collects the heat in the refrigerated space and boils into a vapour releasing it to out side the refrigerated space. obviously there is more detail then this but thats the basic operation.
What percent vapor is refrigerant when entering the evaporator?
Typically, refrigerant entering the evaporator is in a saturated state, meaning it is a mix of liquid and vapor. The exact percentage of vapor will depend on the pressure and temperature conditions at that point.
