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If the condensing pressure is 260 psig and the condensing outlet temperature is 108 degrees. what is the sub cooling in the condenser?
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Why condenser pressure is less than a atmospheric pressure?
Condenser pressure is often less than atmospheric pressure to facilitate the condensation of refrigerant vapor into liquid at lower temperatures. This is achieved using a vacuum system or by employing cooling methods that lower the saturation temperature of the refrigerant. Lowering the pressure reduces the boiling point of the refrigerant, making it easier to condense and improving the efficiency of the refrigeration cycle. Additionally, operating at lower pressures can help prevent the formation of vapor bubbles in the condenser, ensuring efficient heat exchange.
What is the purpose for subcooling the liquid refrigerant before it leaves the condenser?
Subcooling the liquid refrigerant before it leaves the condenser helps to increase the refrigeration system's efficiency by ensuring that the refrigerant is in a completely liquid state. This can improve the system's cooling capacity and reduce the risk of compressor damage due to the presence of any vapor in the system.
How does the outdoor ambient temperature affect the head pressure?
The outdoor ambient temperature significantly influences head pressure in refrigeration and air conditioning systems. As the temperature increases, the heat absorbed by the refrigerant rises, leading to higher head pressure due to increased vapor pressure in the condenser. Conversely, lower ambient temperatures can reduce head pressure as the refrigerant condenses more efficiently. Maintaining optimal head pressure is crucial for system efficiency and performance.
What is the excess heat removed by condenser?
The excess heat removed by a condenser is the heat absorbed by the refrigerant in the evaporator plus the heat of compression in the compressor. The condenser releases this heat to the outside environment, allowing the refrigerant to return to its liquid state.
What TD is used to determine the condenser performance of a water cooled condenser?
The approach temperature difference (ATD) is used to determine the condenser performance of a water-cooled condenser. It is the temperature difference between the refrigerant condensing temperature and the cooling water inlet temperature. A lower ATD indicates better performance and efficiency of the condenser.
Why is the discharge line hotter than the condensing refrigerant?
The discharge line is hotter than the condensing refrigerant because it is where the high-pressure, high-temperature refrigerant vapor exits the compressor after being compressed. The condensing refrigerant, on the other hand, is in the process of releasing heat to the surrounding environment in the condenser, leading to a lower temperature.
When is the most heat removed from refrigerant in the condensing process?
When the temperature of the air passing over the condenser is very low. Ex: Home A/c with out condenser, More heat can be removed if the out door ambient is 60f compared to 90f. Efficiency also increases with this.
When is the most heat removed from the refrigerant in the condensing progress?
The most heat is removed from the refrigerant during the condensing process when it changes from a gas to a liquid state. This typically occurs in the condenser where the high-pressure, high-temperature refrigerant releases heat to the surroundings, causing it to condense.
If an R 12 refrigeration system has its air cooled condensing unit on a 100F roof and the condenser outlet temperature refrigerant is 115F with how much sub cooling is the condenser operating?
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What is the state of the refrigerant entering the condenser?
The state of the refrigerant entering the condenser is a high-pressure, high-temperature, superheated vapor. It has absorbed heat from the evaporator coils and is now ready to release that heat to the surrounding environment as it goes through the condensing process.
What is the condensing pressure?
According to state of the outlet refrigerant from compressor, it's better we use refrigerant temperature.
Refrigerant condensing temp. should be higher than the exiting water temperature?
As rule of the thumb, refrigerant condensing temperature should between 1-2 degreeC higher than the exiting water temperature, this temperature difference is technically called condensing temperature approach. I f the approach is below or above means, system is flooded with refrigerant or system got starve. Above method is also effective in determining if the condenser shell needs maintenance for sclale, sludge build up removal. I am refrigeration mechanic.
What is the refrigeration cycle?
First step in refrigeration is evaporation. The next step is compression, which raises the pressure of the refrigerant vapor. Condensing is the third step and is where the heat transfer takes place. Expansion is the fourth step and is where the condenser cools the refrigerant even more, to a level below the condensing temperature.
What are the key components of a heat pump condensing unit and how do they contribute to the overall efficiency of the system?
The key components of a heat pump condensing unit are the compressor, condenser coil, and fan. The compressor pressurizes the refrigerant, the condenser coil releases heat from the refrigerant, and the fan helps dissipate the heat. These components work together to efficiently transfer heat from inside to outside, making the system more energy-efficient.
What is the basic refrigeration cycle?
First step in refrigeration is evaporation. The next step is compression, which raises the pressure of the refrigerant vapor. Condensing is the third step and is where the heat transfer takes place. Expansion is the fourth step and is where the condenser cools the refrigerant even more, to a level below the condensing temperature.
The condensing pressure is 260 psig and the condenser outlet temperature is 108 degree F for R22. how many degree is the liquid subcooling in this system?
Liquid subcooling is the difference between the condenser outlet temperature and the saturation temperature of the refrigerant. For R22 with a condenser outlet temperature of 108°F at 260 psig, the saturation temperature is approximately 94°F, resulting in a liquid subcooling of 14°F.
