0
Starting with liquid refrigerant:
- The pump pushes the refrigerant, under pressure, through an orifice
- The refrigerant sprays through the orifice into the low pressure side of the system
- The refrigerant flashes to vapor and absorbs heat from the coils of the evaporator
- The heat-laden refrigerant vapor moves into the condenser where the heat is dumped to the atmosphere and the refrigerant condenses to a liquid
- The liquid enters the pump and begins the cycle again.
What else can I help you with?
Why is the throttling valve not replaced by an isentropic turbine in the ideal vapor-compression refrigeration cycle?
In an ideal vapor-compression refrigeration cycle, the throttling valve is used to reduce the pressure of the refrigerant, allowing it to expand and cool without doing work. Replacing it with an isentropic turbine would introduce additional complexity and cost, as the turbine would need to extract work from the refrigerant during expansion. This would alter the cycle's efficiency and require a more complex control system, deviating from the simplicity and effectiveness of the refrigeration cycle that relies on the throttling process to achieve the desired cooling effect. Thus, the throttling valve effectively maintains the cycle's simplicity while achieving the necessary pressure drop.
Bell Coleman Cycle it is the air refregeration cycle?
The Bell-Coleman Cycle is also known as the Air-Standard Refrigeration Cycle or Reverse Brayton Cycle. This 4-process refrigeration cycle involves isentropic compression, followed by isobarric heat rejection, then isentropic expansion (usually by a turboexpander), and finally isobarric heat intake.This cycle is commonly used in jet aircraft, using engine bleed air for compression and venting to the atmosphere. It is also commonly used in commercial air liquification plants.
Why an engine is not used in place of an expansion valve in a vapor compression refrigeration cycle?
An engine cannot replace an expansion valve in a vapor compression refrigeration cycle because their functions are fundamentally different. The expansion valve is designed to reduce the pressure of the refrigerant, allowing it to expand and cool before entering the evaporator. In contrast, an engine converts thermal energy into mechanical work, which would not facilitate the necessary pressure drop or temperature reduction required for effective refrigeration. Additionally, using an engine would complicate the system and introduce inefficiencies that could hinder cooling performance.
Is a fridge a lever?
No, a fridge is not a lever. A lever is a simple machine that consists of a rigid bar pivoted around a fulcrum to lift or move loads. A fridge, on the other hand, is an appliance designed for refrigeration and food preservation, using a refrigeration cycle rather than mechanical leverage to operate.
Refrigeration is added to centrifugal machine through the?
Refrigeration is added to a centrifugal machine through a refrigerant that circulates within the system. This refrigerant absorbs heat from the environment and evaporates in the evaporator coil, then is compressed by the centrifugal compressor, increasing its pressure and temperature. The refrigerant then releases the absorbed heat in the condenser, where it condenses back into a liquid, allowing the cycle to repeat. This process is essential for maintaining the desired temperature in various applications, such as air conditioning and refrigeration systems.
Refrigeration can be described as?
Refrigeration is a process in which work is done to move heat. It was a closed-cycle that could operate continuously, as he described in his patent.
What are the six states of a refrigerant in a refrigeration cycle?
what are the six states of a refrigerant in a refrigeration cycle
Why refrigeration cycle is called reverse carnot cycle?
The Carnot cycle is an idealized thermodynamic cycle that describes a perfect heat engine. In the Refrigeration system we need cooling effect.so it has to operate in opposite nature to produce the cooling effect. So we run the catnot cycle reversly in the refrigeration system. So we call the Refrigeration cycle called as REVERSED CARNOT CYCLE.
What is the net refrigeration effect in the refrigeration cycle?
The net refrigeration effect in a refrigeration cycle is the amount of heat absorbed from the refrigerated space by the refrigerant gas as it evaporates, minus the amount of work done on the refrigerant gas during compression. It represents the actual amount of cooling provided by the refrigeration system.
Is the thermodynamic law that explains the movement of heat energy during the refrigeration cycle is the fist law?
No, the thermodynamic law that specifically explains the movement of heat energy during the refrigeration cycle is the second law of thermodynamics. The first law, which is the law of conservation of energy, states that energy cannot be created or destroyed, only transformed. In the refrigeration cycle, the second law governs how heat is transferred from a cooler space to a warmer one using work, which is essential for the refrigeration process to occur.
How does absorption refrigeration work and what are its key principles?
Absorption refrigeration works by using a refrigerant that is absorbed into a liquid solution, which is then heated to release the refrigerant as a gas. The key principles of absorption refrigeration include the use of heat to drive the refrigeration cycle, the absorption of the refrigerant into a liquid solution, and the release of the refrigerant as a gas through heating.
Which is not a basic component of the compression refrigeration cycle?
Evaporator is not a basic component of the compression refrigeration cycle. The basic components are compressor, condenser, expansion valve, and evaporator.
Define flash gas and how it applies to the net refrigeration effect of the refrigeration cycle?
FLASH GAS - Instantaneous evaporation of some liquid refrigerant at the metering device due to pressure drop which cools the remaining liquid refrigerant to desired evaporation temperature.This flash gas cannot absorb any heat having a negative effect on the net refrigeration cycle
What is the function of an oil separator in refrigeration cycle?
To return oil to the compressor.
What is the significance of the coefficient of performance in the refrigeration cycle?
The coefficient of performance in the refrigeration cycle is important because it indicates how efficiently the refrigeration system can transfer heat. A higher coefficient of performance means the system is more efficient at cooling, which can lead to lower energy consumption and cost savings.
What type of cycle used in refrigeration?
Refrigeration systems primarily use the vapor-compression cycle. This cycle involves the compression of refrigerant gas, which is then condensed into a liquid, allowing it to absorb heat from the environment as it evaporates back into a gas. The cycle consists of four main stages: compression, condensation, expansion, and evaporation. Alternatively, some systems may use the absorption cycle, which relies on heat to drive the refrigeration process instead of mechanical compression.
Explain the reverse carnot cycle and from them go to ac?
Carnot Cycle is an ideal thermodynamic cycle that describes the functioning of a perfect heat engine. In the refrigeration system we need a cooling effect. So, in effect, refrigeration cycle is reverse in process than that of a carnot cycle, and ofcourse not ideal. Air-conditioners also run on the similar cycle as refrigerators.
