Effects of Changing Different Components in a Compression Refrigeration SystemHashim Hasnain Hadi
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This document describes the components and processes of a vapor compression refrigeration system. It contains information on common types of compressors (reciprocating, rotary, centrifugal), condensers (air-cooled, water-cooled, evaporative), and evaporators. It discusses using different compressor types based on required cooling capacity and advantages of each condenser type. The document also mentions using multiple evaporators to increase cooling capacity and reduce evaporator size.
The document discusses mechanics of chip formation in machining. It describes two simplified geometric models - the orthogonal and oblique cutting models. The orthogonal model involves a tool with a rake and clearance angle where the cutting edge is perpendicular to the cutting direction. Chip formation occurs through primary and secondary shear zones. Different types of chips are also described including continuous, discontinuous, those with built-up edge, and serrated chips which depend on factors like material properties and cutting conditions.
The document discusses various applications of VRV systems around the globe, providing examples in numerous countries. It describes installations in historic buildings, hotels, hospitals, apartments, and office buildings. The VRV systems were chosen for their flexibility, ease of installation, individual zone control, energy efficiency, and ability to fit into small spaces or be discreetly hidden from view. Locations included the United Kingdom, Russia, China, Singapore, Italy, Greece, France, Belgium, and more.
Hecu â high energy efficiency solution for condensing units fitted with DC co...CAREL Industries S.p.A
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Hecu Sistema is the CAREL solution for commercial refrigeration, designed for high energy efficiency condensing units that use either traditional HFC refrigerants or natural refrigerants such as CO2.
The systemâs distinctive features include the use of DC inverter technology and real-time synchronisation with the refrigeration units. Hecu sistema meets the requirements of the latest environmental sustainability standards relating to energy consumption (Eco-design directive) and the use of low GWP refrigerants (F-Gas regulation). Stable control means high-quality food preservation and a drastic reduction in waste.
Hecu sistema is also compatible with all CAREL supervisors, which can monitor each individual system or groups of systems, and offer dashboards to simplify interpretation and analysis of system operation.
Variable refrigerant flow (VRF) systems, which were introduced in Japan in 1982, have become popular in many countries, yet they relatively unknown in the United States. VRF systems can condition multiple zones in a building, each of which may have different heating and cooling needs. Using sophisticated control technologies, VRF systems can modulate amount of refrigerant sent to each zone independently and in tune with diverse and changing space conditioning loads, providing substantial energy savings.
To learn more about the many VRF benefits read our guide below:
This is a presentation regarding the introduction to the heating and cooling system technology called variable refrigerant flow systems. (non-commercial)
The document discusses psychrometrics and its importance in air conditioning design. It defines key psychrometric concepts like dry bulb temperature, wet bulb temperature, saturation line, relative humidity, specific volume, enthalpy, and the comfort zone. These concepts are important for understanding heating, cooling, humidification and dehumidification processes depicted on a psychrometric chart. The document also discusses climate classification and references additional resources on psychrometrics.
Psychrometry is the science dealing with air-water vapor mixtures. It studies moist air and its properties like dew point temperature, relative humidity, and dry/wet bulb temperatures. Psychrometric processes involve changes to moist air through sensible heating/cooling, humidifying, dehumidifying, and adiabatic mixing/cooling. The psychrometric chart is used to analyze these processes by plotting air properties and showing lines for temperature, humidity, and enthalpy. It is a useful tool for understanding air conditioning systems and classifying climates.
The document discusses psychrometric charts and their use in analyzing air conditioning processes and calculating air properties. It provides an example problem of calculating properties for an air sample with a dry bulb temperature of 40°C and wet bulb temperature of 28°C. It also discusses sensible and latent heating/cooling, mixing of air streams, and includes sample problems calculating psychrometric properties and air conditioning system design values.
Valeo Air Conditioning AC system Thermal comfort loop valeoscope technical ha...Hugo Vallet
Â
Valeo Service is proud to present you the Air Conditioning technical handbook.
From the Kyoto protocol to thermal comfort rules, system overview and interactions between components, this book will allow you to rediscover the air conditioning system.
More focussed operations on the A/C system are treated through technical bulletins and videos.
Table of content:
1. Disclaimer
2. Valeo, the air conditioning multi-specialist
3. Valeo Techassist
4. Regulations on the A/C business
5. Air conditioning: well-being in the cabin all year long
6. Thermal comfort
7. Air conditioning: comfort and safety
8. Introduction to air conditioning systems
9. The Heating, Ventilation and Air Conditioning unit (HVAC)
10. The air conditioning - A/C loop
11. The components of the A/C loop
12. Why regular A/C servicing?
More info on http://www.valeoservice.com
Check also:
âĒ Valeo Air Conditioning 2014 catalogue: http://www.slideshare.net/ValeoService/valeo-air-conditioning-for-passenger-cars-lcvs-trucks-coaches-2014-955657-catalogue
âĒ Valeo Cabin Air Filter 2014 catalogue: http://www.slideshare.net/ValeoService/valeo-air-conditioning-cabin-air-filter-for-passenger-cars-lcvs-trucks-coaches-2014-catalogue-955658
âĒ Valeo Garage Equipment 2014-2015 955660 English catalogue: http://www.slideshare.net/ValeoService/valeo-garage-equipment-20142015-955660-english-catalogue
âĒ Valeo Refrigerant Gaz 2012-2016-2017 catalogue: http://www.slideshare.net/ValeoService/vs-air-conditioning-20122016-2017-regrigerant-gaz-catalogue-955600
To lean more about:
âĒ compressor functions in the A/C loop: https://youtu.be/mRC0dYZiRqg
âĒ condenser functions in the A/C loop: https://youtu.be/q8b_vb_OTT0
âĒ receiver dryer functions in the A/C loop: https://youtu.be/cEdwzi4-ZrQ
âĒ blower functions in the A/C loop: https://youtu.be/tmzA6EFMM4w
âĒ HVAC main components: https://youtu.be/msBWMWk5zDE
Valeo, automotive technology, naturally
This document provides information on refrigeration and air conditioning. It defines refrigeration as the process of transferring heat from a low temperature region to a high temperature region. The key components and working principles of vapor compression and vapor absorption refrigeration systems are described. It also discusses terms used in air conditioning like dry bulb temperature, wet bulb temperature, and relative humidity. The layout and working of a basic window room air conditioner is explained. Domestic refrigerators like single door, two-door, and their components are outlined.
What is meant by âAirconditioningâ?
Human Comfort
Why do we need A.C.?
Advantages and Disadvantage of A.C.
Ideal room temperature
some terminology-
Dry-bulb temperature
Wet-bulb temperature:
Dew point
Latent heat
Absolute humidity
Relative humidity
Specific humidity
Sensible heat
Evaporating Cooling
Condensation
Enthalpy
Entropy
7. Classification of air conditioners
8. Windows AC- advantages
Parts of the Window Air Conditioners
Working
The refrigeration system,
Air circulation system-room air cycle and
The hot air cycle.
Ventilation system,
Control system,
electrical protection system.
9.Split or Ductless AC-
Advantages, parts indoor and outdoor,
Types-
Wall mounted
Floor mounted/Tower AC
Ceiling mounted/Cassette AC
Multi Split ACs
10. Central Air Conditioning System
Advantages and disadvantages
11. Key differences between "Window", "Split" and a "cassette" air conditioners.
12. Cooling capacity
13. Energy Efficiency
14.Energy Consumption
15.Energy Efficiency Ratio
16.Energy Saving Methods
17.Some AC brands
Effects of Changing Different Components in a Compression Refrigeration SystemHashim Hasnain Hadi
Â
This document describes the components and processes of a vapor compression refrigeration system. It contains information on common types of compressors (reciprocating, rotary, centrifugal), condensers (air-cooled, water-cooled, evaporative), and evaporators. It discusses using different compressor types based on required cooling capacity and advantages of each condenser type. The document also mentions using multiple evaporators to increase cooling capacity and reduce evaporator size.
The document discusses mechanics of chip formation in machining. It describes two simplified geometric models - the orthogonal and oblique cutting models. The orthogonal model involves a tool with a rake and clearance angle where the cutting edge is perpendicular to the cutting direction. Chip formation occurs through primary and secondary shear zones. Different types of chips are also described including continuous, discontinuous, those with built-up edge, and serrated chips which depend on factors like material properties and cutting conditions.
The document discusses various applications of VRV systems around the globe, providing examples in numerous countries. It describes installations in historic buildings, hotels, hospitals, apartments, and office buildings. The VRV systems were chosen for their flexibility, ease of installation, individual zone control, energy efficiency, and ability to fit into small spaces or be discreetly hidden from view. Locations included the United Kingdom, Russia, China, Singapore, Italy, Greece, France, Belgium, and more.
Hecu â high energy efficiency solution for condensing units fitted with DC co...CAREL Industries S.p.A
Â
Hecu Sistema is the CAREL solution for commercial refrigeration, designed for high energy efficiency condensing units that use either traditional HFC refrigerants or natural refrigerants such as CO2.
The systemâs distinctive features include the use of DC inverter technology and real-time synchronisation with the refrigeration units. Hecu sistema meets the requirements of the latest environmental sustainability standards relating to energy consumption (Eco-design directive) and the use of low GWP refrigerants (F-Gas regulation). Stable control means high-quality food preservation and a drastic reduction in waste.
Hecu sistema is also compatible with all CAREL supervisors, which can monitor each individual system or groups of systems, and offer dashboards to simplify interpretation and analysis of system operation.
Variable refrigerant flow (VRF) systems, which were introduced in Japan in 1982, have become popular in many countries, yet they relatively unknown in the United States. VRF systems can condition multiple zones in a building, each of which may have different heating and cooling needs. Using sophisticated control technologies, VRF systems can modulate amount of refrigerant sent to each zone independently and in tune with diverse and changing space conditioning loads, providing substantial energy savings.
To learn more about the many VRF benefits read our guide below:
This is a presentation regarding the introduction to the heating and cooling system technology called variable refrigerant flow systems. (non-commercial)
The document discusses psychrometrics and its importance in air conditioning design. It defines key psychrometric concepts like dry bulb temperature, wet bulb temperature, saturation line, relative humidity, specific volume, enthalpy, and the comfort zone. These concepts are important for understanding heating, cooling, humidification and dehumidification processes depicted on a psychrometric chart. The document also discusses climate classification and references additional resources on psychrometrics.
Psychrometry is the science dealing with air-water vapor mixtures. It studies moist air and its properties like dew point temperature, relative humidity, and dry/wet bulb temperatures. Psychrometric processes involve changes to moist air through sensible heating/cooling, humidifying, dehumidifying, and adiabatic mixing/cooling. The psychrometric chart is used to analyze these processes by plotting air properties and showing lines for temperature, humidity, and enthalpy. It is a useful tool for understanding air conditioning systems and classifying climates.
The document discusses psychrometric charts and their use in analyzing air conditioning processes and calculating air properties. It provides an example problem of calculating properties for an air sample with a dry bulb temperature of 40°C and wet bulb temperature of 28°C. It also discusses sensible and latent heating/cooling, mixing of air streams, and includes sample problems calculating psychrometric properties and air conditioning system design values.
Valeo Air Conditioning AC system Thermal comfort loop valeoscope technical ha...Hugo Vallet
Â
Valeo Service is proud to present you the Air Conditioning technical handbook.
From the Kyoto protocol to thermal comfort rules, system overview and interactions between components, this book will allow you to rediscover the air conditioning system.
More focussed operations on the A/C system are treated through technical bulletins and videos.
Table of content:
1. Disclaimer
2. Valeo, the air conditioning multi-specialist
3. Valeo Techassist
4. Regulations on the A/C business
5. Air conditioning: well-being in the cabin all year long
6. Thermal comfort
7. Air conditioning: comfort and safety
8. Introduction to air conditioning systems
9. The Heating, Ventilation and Air Conditioning unit (HVAC)
10. The air conditioning - A/C loop
11. The components of the A/C loop
12. Why regular A/C servicing?
More info on http://www.valeoservice.com
Check also:
âĒ Valeo Air Conditioning 2014 catalogue: http://www.slideshare.net/ValeoService/valeo-air-conditioning-for-passenger-cars-lcvs-trucks-coaches-2014-955657-catalogue
âĒ Valeo Cabin Air Filter 2014 catalogue: http://www.slideshare.net/ValeoService/valeo-air-conditioning-cabin-air-filter-for-passenger-cars-lcvs-trucks-coaches-2014-catalogue-955658
âĒ Valeo Garage Equipment 2014-2015 955660 English catalogue: http://www.slideshare.net/ValeoService/valeo-garage-equipment-20142015-955660-english-catalogue
âĒ Valeo Refrigerant Gaz 2012-2016-2017 catalogue: http://www.slideshare.net/ValeoService/vs-air-conditioning-20122016-2017-regrigerant-gaz-catalogue-955600
To lean more about:
âĒ compressor functions in the A/C loop: https://youtu.be/mRC0dYZiRqg
âĒ condenser functions in the A/C loop: https://youtu.be/q8b_vb_OTT0
âĒ receiver dryer functions in the A/C loop: https://youtu.be/cEdwzi4-ZrQ
âĒ blower functions in the A/C loop: https://youtu.be/tmzA6EFMM4w
âĒ HVAC main components: https://youtu.be/msBWMWk5zDE
Valeo, automotive technology, naturally
This document provides information on refrigeration and air conditioning. It defines refrigeration as the process of transferring heat from a low temperature region to a high temperature region. The key components and working principles of vapor compression and vapor absorption refrigeration systems are described. It also discusses terms used in air conditioning like dry bulb temperature, wet bulb temperature, and relative humidity. The layout and working of a basic window room air conditioner is explained. Domestic refrigerators like single door, two-door, and their components are outlined.
What is meant by âAirconditioningâ?
Human Comfort
Why do we need A.C.?
Advantages and Disadvantage of A.C.
Ideal room temperature
some terminology-
Dry-bulb temperature
Wet-bulb temperature:
Dew point
Latent heat
Absolute humidity
Relative humidity
Specific humidity
Sensible heat
Evaporating Cooling
Condensation
Enthalpy
Entropy
7. Classification of air conditioners
8. Windows AC- advantages
Parts of the Window Air Conditioners
Working
The refrigeration system,
Air circulation system-room air cycle and
The hot air cycle.
Ventilation system,
Control system,
electrical protection system.
9.Split or Ductless AC-
Advantages, parts indoor and outdoor,
Types-
Wall mounted
Floor mounted/Tower AC
Ceiling mounted/Cassette AC
Multi Split ACs
10. Central Air Conditioning System
Advantages and disadvantages
11. Key differences between "Window", "Split" and a "cassette" air conditioners.
12. Cooling capacity
13. Energy Efficiency
14.Energy Consumption
15.Energy Efficiency Ratio
16.Energy Saving Methods
17.Some AC brands
The weekly report discusses the operation of TRIACs and DIACs. It explains that TRIACs can be triggered into conduction during either polarity and provide full-wave control of voltage from zero to full power. DIACs are bidirectional trigger diodes mainly used to fire TRIACs and thyristors in AC control circuits. They remain highly resistive until a break over voltage is reached, then allow current to flow regardless of polarity. The report notes the team's strong point for the week but identifies a problem controlling heaters and displays with two potentiometers that needs further understanding. The next week's job is to buy equipment and test circuits.
The weekly report discusses the operation of TRIACs and DIACs. It explains that TRIACs can be triggered into conduction during either polarity and provide full-wave control of voltage from zero to full power. DIACs are bidirectional trigger diodes mainly used to fire TRIACs and thyristors in AC control circuits. They remain highly resistive until a break over voltage is reached, then allow current to flow regardless of polarity. The report notes the team's strong point for the week but identifies a problem controlling heaters and displays with two potentiometers that needs further understanding. The next week's job is to buy equipment and test circuits.
The weekly report discusses the operation of TRIACs and DIACs. It explains that TRIACs can be triggered into conduction during either polarity and provide full-wave control of voltage from zero to full power. DIACs are bidirectional trigger diodes mainly used to fire TRIACs and thyristors in AC control circuits. They remain highly resistive until a break over voltage is reached, then allow current to flow regardless of polarity. The report notes the team's strong point for the week but identifies a problem controlling heaters and displays with two potentiometers that needs further understanding. The next week's job is to buy equipment and test circuits.
The document is a weekly report from an engineering team discussing progress on their product design. It explains that TRIACs do not always fire symmetrically, resulting in undesirable harmonic frequencies in the current waveform. A DIAC can help ensure more symmetrical firing of a TRIAC and a smoother waveform since it prevents gate current until a consistent triggering voltage threshold is reached. The report analyzes a typical DIAC-TRIAC circuit used for smooth AC power control of a heater by adjusting the triac conduction angle. Next steps are to purchase equipment and begin testing.
This weekly report discusses an engineering team's progress on a product design. It explains that TRIACs do not always fire symmetrically, resulting in undesirable waveforms with more harmonics. DIACs have more symmetrical breakover voltages than TRIACs, allowing for more consistent TRIAC firing and more symmetrical waveforms. The report also shows a typical DIAC-TRIAC circuit used to smoothly control AC power to a heater by adjusting the triac's conduction angle. Next week, the team will begin buying equipment and testing it.
This weekly report discusses an engineering student group's progress on their product design. It explains that TRIACs do not always fire symmetrically, resulting in undesirable harmonic frequencies in the current waveform. A DIAC can help ensure more symmetrical firing of a TRIAC and a smoother waveform. The report also shows a typical DIAC-TRIAC circuit used to smoothly control AC power to a heater by adjusting a potentiometer to vary the triac conduction angle. The engineering analysis notes the importance of checking component specifications like voltage and current ratings. Next steps are to purchase equipment and begin testing.
This weekly report discusses an engineering student group's progress on their product design. The report explains that TRIACs do not always fire symmetrically, resulting in undesirable harmonic frequencies in the current waveform. A DIAC can help ensure more symmetrical firing of a TRIAC and a smoother waveform since its breakover voltage is consistent in both polarities. The report also shows a typical DIAC-TRIAC circuit used to smoothly control AC power to a heater by adjusting a potentiometer to vary the TRIAC's conduction angle. The engineering analysis checks component specifications like voltage and current ratings. Next steps are to purchase equipment and begin testing.
This weekly report discusses an engineering student group's progress on their product design. The report explains that TRIACs do not always fire symmetrically, resulting in undesirable harmonic frequencies in the current waveform. A DIAC can help ensure more symmetrical firing of a TRIAC and a smoother waveform. The report also shows a typical DIAC-TRIAC circuit used to smoothly control AC power to a heater by adjusting a potentiometer to vary the triac conduction angle. In their engineering analysis, the strong point identified is checking component specifications, while the next week's job is to begin buying equipment and testing.
The group discussed designing a water heater. They proposed using a 3.5 kW heater powered by 220V AC electricity. Safety features would include flow control, an ELCB circuit breaker, a thermostat to cut power at 57 degrees Celsius, and a protective cover for the printed circuit board. Each group member was assigned a component to research: the student was given the power circuit to design using components like a heater, ELCB, and opto-isolator. In the next week, the group will distribute work and begin circuit designs for each water heater component.
The group discussed designing a water heater. They proposed using a 3.5 kW heater powered by 220V AC, including safety features like over-temperature cutoff. The group divided responsibilities, with the student focusing on the power circuit to drive the heater. In the coming week, each group member will design their assigned component of the water heater circuit.
- The student's engineering group is working on designing a water heater that displays the amount of water and temperature during use, and controls the temperature close to the desired value.
- Last week they presented the block diagram and some circuits, but it had problems, so they need to do more research.
- A problem is controlling the temperature if the water flow into the boiler is inconsistent, as too little or too much water flow affects how quickly the water is heated.
- The temperature control circuit works like a dimmer circuit that changes the load to control the phase shift at the triac gate using an RC circuit and diac for surge protection.
- Next week they will finalize the functions, button functions and
This weekly report summarizes the progress of a student group working on an electric kettle design. In the previous week, the group presented the internal kettle circuit but it was not perfected. The student then researched how a thermostat works, learning it uses two switches - one to turn the power on and another normally closed switch that opens to interrupt power when the water reaches boiling temperature. For next week, the group plans to design a kettle circuit to develop their project further.
1) The engineering team researched water heaters to save energy and water as part of an industrial design campaign.
2) They found that analog displays are more popular than digital displays due to problems with digital displays not accurately showing the water temperature.
3) Most water heaters do not have issues with water pressure because homes generally have water pumps, but some models use microcontrollers to control thermostats that the team does not have knowledge about.
4) For next week, the team will continue researching water heater data and begin the design process.
1. The weekly report discusses progress on a smart table product concept being developed by the Korekon company engineering team.
2. The product concept involves a glass table with integrated lighting that can be adjusted for different lighting intensities to create a paradise-like atmosphere.
3. It also includes an induction cooker built into the table that can be controlled by touch sensors without buttons to keep food warm during meals.
4. However, the architecture and engineering teams had differing ideas and lack of planning led the company to consult with other groups on combining efforts.
The weekly report summarizes the progress of the Korekon company engineering team. The team learned about electric equipment and product design concepts. They proposed a smart table that inserts cultural beliefs and uses touch sensors to control an induction cooker. The team researched induction cookers and sensors. Later, the architecture master said the product design did not pass and the team must combine with another group. The strong point was discussing ideas reasonably, but the weak points were lack of planning for unexpected situations and differences between engineer and architect thinking. The next week's job is to set clear work purposes for each week.
The document summarizes a student's experience at an INC 281 Multidisciplinary Workshop. In the morning, the student listened to presentations from different companies about their concepts that combined Thai and Western culture, Thai beliefs, or focused on recycling. In the afternoon, the student's group was assigned to the COREKON company booth at the BOI Fair, but decided to look at other booths showcasing new technologies from companies like Nissan, Canon, and Toshiba. The student struggled to understand products from a design perspective and balance consumer demands.
On January 5th, the author was assigned to repair a refrigerator. They studied the components and workings of refrigerators online before working on it. The refrigerator uses a vapor-compression cooling system where a refrigerant is circulated through four main components - a compressor, condenser, evaporator, and throttling device - to lower the temperature inside the refrigerator. The refrigerant is compressed in the compressor, releasing heat in the condenser before expanding through the throttling device into the evaporator, where it absorbs heat from inside the refrigerator before returning to the compressor to repeat the cycle.
This document contains personal details such as name, contact information, education background, and qualifications of an individual. The education background includes a Bachelor's degree from a university majoring in a subject and obtaining a GPA of X.XX. A second education level of M.6 was obtained from another institute majoring in a subject with a GPA of X.XX. Language skills in Thai, English and self-reported qualifications in driving a car and motorcycle as well as other skills such as C programming, PSpice, Matlab, Basic Proteus, and knowledge of electrical components are also listed.
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