The condenser transfers heat from the refrigerant vapor to the air or water. It removes heat from the refrigerant vapor leaving the compressor, causing the refrigerant to condense from a vapor to a liquid. This liquid refrigerant can then provide cooling in the evaporator. Common types of condensers include air-cooled condensers, which use natural convection or forced convection of air across finned tubes to remove heat, and water-cooled condensers.
Condensers and evaporators are basically heat exchangers in which the refrigerant undergoes a phase change. Next to compressors, proper design and selection of condensers and evaporators is very important for satisfactory performance of any refrigeration system.
Condensers and evaporators are basically heat exchangers in which the refrigerant undergoes a phase change. Next to compressors, proper design and selection of condensers and evaporators is very important for satisfactory performance of any refrigeration system.
أساسيات ومبدأ عمل أبراج التبريد
Fundamentals of Cooling Tower, Types, Applications, Performance, Energy Efficiency, Water Conservation & Service Maintenance
PRINCIPAL OF COOLING TOWER
TYPES OF COOLING TOWER
DIFFERENT TERMS USED IN COOLING TOWER SPECIFICATION
AIR PROPERTIES AND
SIZING OF COOLING TOWER HEIGHT
TYPICAL SPECIFICATION FORMAT / DATASHEET
using different refrigerants as working fluid,the variation in the dimensional parameters of evaporator ,compressor,condenser and expansion device are shown.
أساسيات ومبدأ عمل أبراج التبريد
Fundamentals of Cooling Tower, Types, Applications, Performance, Energy Efficiency, Water Conservation & Service Maintenance
PRINCIPAL OF COOLING TOWER
TYPES OF COOLING TOWER
DIFFERENT TERMS USED IN COOLING TOWER SPECIFICATION
AIR PROPERTIES AND
SIZING OF COOLING TOWER HEIGHT
TYPICAL SPECIFICATION FORMAT / DATASHEET
using different refrigerants as working fluid,the variation in the dimensional parameters of evaporator ,compressor,condenser and expansion device are shown.
Afval heeft vaak nog energie potentieel. Bij de verbranding kan stoom opgewekt worden. Meer weten over de mogelijkheden van waste energy? Lees erover in deze presentatie inclusief een klanten case.
This was presented during the 9th annual refining summit 2015 in The Hague where key descision makers from the industry came together. One of the main topics was "How to increase energy efficiency & How to increase Profit marines" This presenation how the latent Bronswerk developments are supporting these targets.
3 show cases:
case 1: steam recompression
Case 2: debottlenecking ACHE with limited plotspace, limited available power and noise limitations
Case 3: debottlenecking ACHE with noise issues.
ABSTRACT
Heat/light/electrical energy is out today’s necessity and has scarcity also. Energy conservation is key requirement of any industry at all times.
In general, industries use heat energy for conservation of raw material to finished product. The source of heat energy is generally saturated or super heated steam. The steam generation is common use one boiler with carity of fuels. Whatever may be the fuel the generation should be as economy as possible which adds to the product cost. Further the usage of steam and recycling steam condensate back to boiler is an art depending on plant layouts.
In this project the steam generator is water tube boiler fired with rice husk. The steam is transferred to the tyre/tube moulds where tyres/tubes are cured while the heat is rejected to the tyres the condensate forms and this condensate is put back to the boiler. While doing so the steam is also stopped back to boiler without rejecting complete heat to the product. This gets flashed into atmosphere at feed water tank. The science of separation of condensate from steam saves energy. Better the separation more the fuel conservation.
In the steam generator the fuel is burnt to heat the water and form steam. This fuel burnt flue gas carries lot of energy, out through chimney. Prior to exhausting through the heat left in flue need to be recovered, through heat recovery mechanisms’. In this project an air-preheater condensate heat recovery unit is the major energy consuming station.
Condenser and Cooling Tower Power Plant EngineeringAjaypalsinh Barad
The file contains all details of the Condenser and Cooling Tower systems or Thermal power plant. This is the part of the subject Power Plant Engineering in GTU in 7th semester.
In this presentation, we delve into the fundamentals of condensers, exploring their various types and the principles governing their operation. From basic definitions to complex numerical analyses, this slide deck offers a comprehensive overview for students, engineers, and enthusiasts alike.
Evaporators: Types and Numerical SolutionsRavindra Kolhe
Dive into the world of evaporators with this comprehensive presentation. Explore the various types of evaporators, from simple to complex designs, and delve into numerical examples that illustrate their practical applications. Ideal for students, professionals, and anyone curious about thermal engineering.
INTERIOR LIGHTING DESIGN A STUDENT'S GUIDEno suhaila
This guide on lighting design is intended for students who have no prior knowledge of lighting and also for those who are experienced but would like to bring themselves up to date with developments in lamp and luminaire design, modern design theory, European Standards and the CIBSE code for Interior Lighting 1994.
It develops the basic principles of lighting science but then goes on to provide a modern design perspective for both artificial lighting and day lighting which will be useful to experienced designers.
Interior Lighting: Bringing Rooms To Life teaches the basics of residential interior lighting. The liveaction video demonstrates how the angle, quality, and intensity of light influence how it is perceived and used.
The program explains ambient lighting, task lighting, and accent lighting. It demonstrates different kinds of lamps and lighting fixtures and shows how each contributes to the overall interior design plan.
The video is aimed at students taking introductory courses in interior design or lighting.
Led Lighting (CIBSE Code for Interior Lighting, 1994)no suhaila
There are many standards pertaining to the recommended lighting lux values and the Health & Safety Executive document HSG38 provides guidance on how lighting affects the health and safety of people at work.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
2. CONDENSER
PURPOSE
• Thus the purpose of the condenser in the
refrigeration system is to remove heat from the
refrigerant vapor leaving the compressor (or
generator in case of absorption system) so that
the refrigerant will condense to its liquid state.
• This liquid refrigerant will then be able to achieve
the refrigerating effect in the evaporator.
3. CONDENSER
PURPOSE
• The condenser is a heat exchanger in a
refrigerating system.
• The condenser rejects heat which consists of
a. Heat absorbed by the evaporator
b. Heat from the energy input to the compressor
4. CONDENSER
PURPOSE
• The condenser is one of the important part of
the refrigeration system.
• The rate of heat transfer in condenser
depends upon:
a. Temperature difference
b. Material of construction
c. Types and quality of cooling medium
d. Surface condition
5. CONDENSER
OPERATION
• Refrigerant always leaves the compressor at a
temperature well above its saturation
(condensing) temperature.
• The refrigerant is thus in a superheated state.
• In the first part of the condenser, sensible
heat is removed.
• The vapor is cooled to its saturation
temperature.
6. CONDENSER
OPERATION
• After this, latent heat is removed when the vapor is
cooled.
• The size of the condenser is such that, the refrigerant
leaving the condenser is a saturated liquid at the
condensing temperature.
• In number of cases, the condenser heat transfer surface
area is great enough so that the liquid refrigerant is
subcooled before it leaves the condenser.
• The heat removed in the condenser is called the HEAT OF
REJECTION.
7. CONDENSER
AIR COOLED CONDENSER
a. Natural convection air
cooled condenser
b. Forced convection air
cooled condenser
WATER COOLED CONDENSER
a. Tube in tube condenser
b. Shell and coil condenser
c. Shell and tube condenser
10. AIR COOLED CONDENSER
OPERATION
• This is the condenser in which the removal of heat is
done by air.
• These condensers are the most popular type used on
small commercial and domestic refrigeration and air
conditioning units.
• They consist of steel or copper tubing through which
the refrigerant flows.
• Tubes are usually provided with plate type fins to
increase the surface area for heat transfer.
11. AIR COOLED CONDENSER
OPERATION
• Except for very small domestic units, which
depends on gravity air circulation, heat transfer is
efficiently accomplished by forcing large
quantities of air through a condenser assembly.
• The quantity of air circulated is usually 30m3
/min/ton or refrigeration.
12. AIR COOLED CONDENSER
OPERATION
• There are two types of natural draft air-cooled
condensers.
• The TUBE and FIN type shown in figure 1 and the
plate type as shown in figure 2.
• The FIN spacing is quite wide to reduce dust
clogging.
13. AIR COOLED CONDENSER
OPERATION
• The fin spacing is wide to reduce clogging (TERSUMBAT)
of condenser by dust.
• The condenser with single row of tubing (BARISAN TIUB
TUNGGAL) provide the most efficient heat transfer.
• In small capacity refrigeration, single row condensers are
used.
• Like domestic refrigerators, freezers, water cooler etc.
• The circulation of air over an air cooled condenser may
be either by natural convection or by action of a fan or
blower.
14. AIR COOLED CONDENSER
Natural-draft condenser
a. Natural convection air
cooled condenser
b. Forced convection air
cooled condenser
Plate type condenser
a. Tube in tube condenser
b. Shell and coil condenser
c. Shell and tube condenser
15. AIR COOLED CONDENSER
DISADVANTAGES
i. It operates at a higher condensing temperature than
a water cooled condenser. The higher condensing
temperature causes the compressor to work more.
ii. Large condensing surface is required for air cooled
condenser as the air quantity circulated over the
condenser is low.
16. NATURAL CONVECTION AIR COOLED
CONDENSER
• In this type of condenser, the heat transfer from
the coil to the air is by natural convection.
• This type of condensers have very limited us.
• They are not capable of dissipating
(MELEPASKAN)large quantities of heat because
of the slow air movement over their surface.
• Because of this, relatively large surface are
required as compared to forced convection
condensers.
17. NATURAL CONVECTION AIR COOLED
CONDENSER
• This condenser is manufactured economically.
• It requires little maintenance.
• It is commonly used in domestic refrigerators.
• Fin spacing, if provided, is too wide in this type
of condenser.
• This is to reduce the possibility of the condenser
being foulded with dirt and lint wide fin spacing
also reduces, the resistance offered to free air
circulation.
18. NATURAL CONVECTION AIR COOLED
CONDENSER
• This type of condenser is quite compact and easy
to install and mount.
• Cleaning of tubes are quite simple.
• By lowing air over the finned surface.
• This type on condenser require no water and
present no problem of freezing in cold weather.
19. NATURAL CONVECTION AIR COOLED
CONDENSER
• Serious compressor problems can result if the
condenser gets dirty.
• The dirt will reduce the heat transfer rate and the
compressor head pressure can rise to damaging
levels.
• The condenser can usually be cleaned with a brush
and vacuum cleaner easily.
Use:
• These types of condensers are used only in small
capacity applications such as domestic refrigerators,
freezers, water cooler, and room air conditioner.
20. FORCED CONVECTION AIR COOLED
CONDENSER
• In this condenser, fan is used to force the air over
condenser coils to increase the heat transfer
capacity.
• The propeller type fan or the centrifugal type fan
may be used to move the air.
• The type of fan used depends on design factors
such as air resistance, noise level, space
requirements etc.
21. FORCED CONVECTION AIR COOLED
CONDENSER
• The forced air type of air cooled condenser is more
practical for larger capacities than the natural draft
type condenser.
• Air cooled condensers have the peculiar distinction
(PERBEZAAN YANG PELIK) of being able to deliver
increased capacity when it is not required.
• An air cooled condenser is designed sufficiently
(CUKUP) large to reject the required amount of heat
when the outside air design temperature is actual
outside air design temperature.
22. FORCED CONVECTION AIR COOLED
CONDENSER
• When outside air temperature drops, the
condenser is able to reject more heat.
• The cooling load in this case is less.
• But the condenser is able to reject more heat.
• This can create a problem on systems.
• The refrigerant system will have to run even
when the outside air temperature has dropped
significantly.