Parts of Vapour-Condensation cycle
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The process of formation of water from air is called Vapour-Condensation. There are many parts of condensation cycle. Some are listed with brief description above.
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The refrigerant enters the inlet and screen as a high-pressure liquid. The refrigerant flow is restricted by a metered orifice through which it must pass.
As the refrigerant passes through this orifice, it changes from a high-pressure liquid to a low-pressure liquid (or passes from the
high side to the low side of the system).
Let's review briefly what happens to the refrigerant as we change its pressure.
As a high-pressure liquid, the boiling point of the refrigerant has been raised in direct proportion to its pressure. This has concentrated its heat content into a small area, raising the temperature of the refrigerant higher than that of the air passing over the condenser. This heat will then transfer from the warmer refrigerant to the cooler air, which condenses the refrigerant to a liquid.
The heat transferred into the air is called latent heat of condensation. Four pounds (1.8 kg) of refrigerant flowing per minute through the orifice will result in 12,000 Btu (12.7 MJ) per hour transferred, which is designated a one-ton unit. Six pounds (2.7 kg) of flow per minute will result in 18,000 Btu (19.0 MJ) per hour, or a one and one-half ton unit.
Valve details
The refrigerant flow through the metered orifice is extremely important, anything restricting the flow will affect the entire system.
If the area cooled by the evaporator suddenly gets colder, the heat transfer requirements change. If the expansion valve continued to feed the same amount of refrigerant to the evaporator, the fins and coils would get colder until they eventually freeze over with ice and the air flow is stopped.
A thermal bulb has a small line filled with C02 is attached to the evaporator tailpipe. If the temperature on the tail pipe raises, the gas will expand and cause pressure against the diaphragm. This expansion will then move the seat away from the orifice,
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This document provides information about refrigeration systems prepared by students at ARRDEKTA Institute of Technology under the guidance of professors Y.R. Sharma and P.K. Patel. It describes refrigeration as the process of removing heat from a substance under controlled conditions to maintain its temperature below surroundings. The key components of a vapor compression refrigeration system are discussed, including the compressor, condenser, expansion valve, and evaporator. Vapour compression refrigeration is noted as the most important system for commercial and domestic use due to its efficiency and practicality.
Refrigeration system.ppt
This document provides information about refrigeration systems prepared by students at ARRDEKTA Institute of Technology under the guidance of professors Y.R. Sharma and P.K. Patel. It describes refrigeration as the process of removing heat from a substance under controlled conditions to maintain its temperature below surroundings. The key components of a vapor compression refrigeration system are discussed, including the compressor, condenser, expansion valve, and evaporator. Vapour compression refrigeration is noted as the most important system for commercial and domestic use due to its efficiency and practicality.
Refrigeration system.ppt
This document provides information about refrigeration systems prepared by students at ARRDEKTA Institute of Technology under the guidance of professors Y.R. Sharma and P.K. Patel. It describes refrigeration as the process of removing heat from a substance under controlled conditions to maintain its temperature below surroundings. The key components of a vapor compression refrigeration system are discussed, including the compressor, condenser, expansion valve, and evaporator. Vapour compression refrigeration is noted as the most important system for commercial and domestic use due to its efficiency and practicality.
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This document provides information about refrigeration systems prepared by students at ARRDEKTA Institute of Technology under the guidance of professors Y.R. Sharma and P.K. Patel. It describes refrigeration as the process of removing heat from a substance under controlled conditions to maintain its temperature below surroundings. The key components of a vapor compression refrigeration system are discussed, including the compressor, condenser, expansion valve, and evaporator. Vapour compression refrigeration is noted as the most important system for commercial and domestic use due to its efficiency and practicality.
Refrigeration system.ppt
This document provides information about refrigeration systems prepared by students at ARRDEKTA Institute of Technology under the guidance of professors Y.R. Sharma and P.K. Patel. It defines refrigeration as the process of removing heat from a substance under controlled conditions to maintain its temperature below surroundings. The key components and processes of a vapor compression refrigeration system are described, including the compressor, condenser, expansion valve, and evaporator. Vapour compression is identified as the most important and practical refrigeration system used commercially and domestically.
سمنار الثرمو النهائي 2023 THYROMDYNAMIC.pptx
The document discusses the vapor compression refrigeration cycle. It operates by using a refrigerant that alternately vaporizes and condenses. As a liquid, it absorbs heat during evaporation, and as a gas it releases heat during condensation. The ideal vapor compression cycle involves isentropic compression, constant pressure heat rejection, throttling through an expansion valve, and constant pressure heat addition. The cycle uses a compressor, condenser, expansion valve, and evaporator to transfer heat from a low temperature region to a higher one. The efficiency of refrigerators and heat pumps is expressed through the coefficient of performance.
PRESENTATATION ON FRIDGE/REFRIDGERATOR
In this power-point presentation, you'll understand the basic concepts & mechanisms of a fridge/refrigerator.
This is a short ppt in simple english language for easy & quick understanding of concepts.
Hope, it'll be helpful to you
THANKYOU :)
15679104 basic-civil-and-mechanical-engineering-unit-v
Refrigeration is the process of providing and maintaining a temperature below the surrounding atmosphere. Refrigerators cool objects while heat pumps heat spaces warmer than the surroundings. Common types of refrigerators include ice refrigerators which use ice as the cooling medium, air refrigerators which use air, and vapor refrigerators which use working fluids like ammonia or freon. Refrigeration has applications in industries like food preservation, manufacturing, and air conditioning.
PPT ON HEAT PUMP AND REFRIGERATOR.pptx
This document provides an overview of refrigeration and its key components. It discusses heat pumps and refrigerators, and how they maintain higher or lower temperatures than their surroundings. The document then focuses on vapor compression refrigeration systems. It describes each major component - the compressor, condenser, receiver, expansion valve, and evaporator. It explains the purpose of each component and the changes to the refrigerant that occur within each part of the vapor compression cycle.
Refrigeration And Air Conditioning Cycle.docx
I am going to publish my first document todat and hope that all the readers like my document. This helps the students and teachers to study about refrigeration and air conditioning system, their componrnts and the working principle.
Thanks yo all.
www.ijerd.com
This document summarizes research on modifications to vapor compression refrigeration systems to improve efficiency. It discusses using a diffuser at the condenser inlet to reduce the velocity of refrigerant leaving the compressor, which can improve system performance. The document reviews several other modifications studied in literature, including advances in compressor design, increasing subcooling, minimizing evaporator hunting, and new refrigerant cycles. It concludes that reducing refrigerant velocity with a diffuser can avoid problems caused by high velocity such as liquid humping and damage to condenser tubing.
Similar to Parts of Vapour-Condensation cycle (20)
15679104 basic-civil-and-mechanical-engineering-unit-v
15679104 basic-civil-and-mechanical-engineering-unit-v
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The debris of the ‘last major merger’ is dynamically young
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Parts of Vapour-Condensation cycle
- 1. Parts of Vapour Condensation Cycle Compressor A Compressor is a mechanical device that increases the pressure of a gas. In compressor, low pressure low temperature gaseous refrigerant is converted into high pressure high temperature gaseous refrigerant. Compressor is the only component that consumes power in the whole Vapour Condensation cycle apart from fans. It is an Isentropic process. Condenser A Condenser is a device that is used to condense a fluid from its gaseous state to liquid. In condenser, high pressure high temperature refrigerant from the compressor is converted into high pressure moderate temperature liquid refrigerant. It is an Isobaric process.
- 2. Expansion Valve Expansion valves are flow-restricting devices that cause a pressure drop of the working fluid. In expansion valve, high pressure moderate temperature liquid refrigerant from the condenser is converted into low pressure low temperature refrigerant. It is an Isenthalpic process.
- 3. Evaporator An evaporator is used to allow a compressed cooling chemical, such as R-134A or R-410A, to evaporate from liquid to gas while absorbing heat in the process. In evaporator, low pressure low temperature liquid refrigerant from the expansion valve is converted into low pressure low temperature gaseous refrigerant. Here the water vapour from the air condenses. It is an Isobaric process.