The document provides an overview of HVAC (heating, ventilation, and air conditioning) systems. It discusses key components such as furnaces, heat exchangers, evaporator coils, condensing units, ducts, vents, and thermostats. It explains how HVAC systems work to moderate interior temperatures through heating in winter and cooling in summer. Performance metrics for HVAC systems like efficiency, EER, and SEER are also defined.
This a HVAC presentation for Air Conditioning systems giving a description of the systems and their types including the case study in Calicut city, It also includes bylaws required for air conditioning design
I will describe those things in this PPT
Introduction
Principles of air-conditioning,
Type of-of air-conditioning,
Cooling cycle / refrigeration cycle,
The coolant,
thanks
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This a HVAC presentation for Air Conditioning systems giving a description of the systems and their types including the case study in Calicut city, It also includes bylaws required for air conditioning design
I will describe those things in this PPT
Introduction
Principles of air-conditioning,
Type of-of air-conditioning,
Cooling cycle / refrigeration cycle,
The coolant,
thanks
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
Fundamentals of HVAC Systems is a thorough introduction on how HVAC systems control temperature, air quality and air circulation in a conditioned space.
Ideal for recent engineering graduates working in the HVAC&R industry, experienced engineers entering HVAC&R from another engineering area, as well as architects, technicians, construction or building management professionals who need to increase their knowledge of HVAC systems.
This course reader can function as a stand-alone reference, or may accompany the eLearning course, Fundamentals of HVAC Systems, online modules.
By http://be-cool.in/ - There are various types of air conditioning systems. The application of a particular type of system depends upon a number of factors like how large the area is to be cooled, the total heat generated inside the enclosed area, etc. An HVAC designer would consider all the related parameters and suggest the system most suitable for your space.
Split Air Conditioner
Window Air Conditioner
Packaged Air Conditioner
Central Air Conditioning System
Understanding HVAC systems is essential for its proper maintenance. Quarterly maintenance of your HVAC systems is important to extend the system’s lifespan and save hundreds of dollars on unexpected repairs. Regular maintenance of residential HVAC systems is essential when it comes not only to the proper function of boilers, furnaces, and AC units but also for better energy efficiency and in-home air quality. A properly maintained HVAC system can cut hydro costs from five to ten percent, as well as improving comfort and air quality.
For More info:
https://sierraair.ca/residential/
Its the detailed process of the Centralized Air conditioning system. It is the apt notes required for architecture students. It has the components and sub topics with the detailed explanation of the mechanism of how it works
Fundamentals of HVAC Systems is a thorough introduction on how HVAC systems control temperature, air quality and air circulation in a conditioned space.
Ideal for recent engineering graduates working in the HVAC&R industry, experienced engineers entering HVAC&R from another engineering area, as well as architects, technicians, construction or building management professionals who need to increase their knowledge of HVAC systems.
This course reader can function as a stand-alone reference, or may accompany the eLearning course, Fundamentals of HVAC Systems, online modules.
By http://be-cool.in/ - There are various types of air conditioning systems. The application of a particular type of system depends upon a number of factors like how large the area is to be cooled, the total heat generated inside the enclosed area, etc. An HVAC designer would consider all the related parameters and suggest the system most suitable for your space.
Split Air Conditioner
Window Air Conditioner
Packaged Air Conditioner
Central Air Conditioning System
Understanding HVAC systems is essential for its proper maintenance. Quarterly maintenance of your HVAC systems is important to extend the system’s lifespan and save hundreds of dollars on unexpected repairs. Regular maintenance of residential HVAC systems is essential when it comes not only to the proper function of boilers, furnaces, and AC units but also for better energy efficiency and in-home air quality. A properly maintained HVAC system can cut hydro costs from five to ten percent, as well as improving comfort and air quality.
For More info:
https://sierraair.ca/residential/
Its the detailed process of the Centralized Air conditioning system. It is the apt notes required for architecture students. It has the components and sub topics with the detailed explanation of the mechanism of how it works
Introduction to hvac system, types of efficient hvac system and how it works. design recommendation for installation of hvac. air handling unit concept. case study.
Learn why HVAC system maintenance is crucial for Cayman construction companies. Explore expert tips and services to ensure your HVAC systems operate efficiently, reducing downtime and saving money.
Guide HVAC Systems: Basics, How They Work, and HVAC TypesChandresh Chudasama
Explore the basics of HVAC systems, how they work, and the different types in this comprehensive guide on HVAC System Guide. HVAC, which is an abbreviation for Heating, Ventilation, and Air Conditioning, is no less crucial than this, as it defines how heat is viewed and controlled in indoor spaces.
OverviewHeating and Cooling SystemsA person’s comfort in an en.docxalfred4lewis58146
Overview
Heating and Cooling Systems
A person’s comfort in an environment depends on the temperature, relative humidity, mean radiant temperature, and air movement. A weatherization service provider should be aware of these four factors.
There are many types of heating and cooling systems that may be present in homes that need to be weatherized. A weatherization service provider should be able to differentiate between the types of systems and recognize problems with a system.
Lastly, a weatherization service provider should be able to detect leaks in duct systems using various testing methods. After the leaks have been discovered, the provider should be able to seal the leaks to improve the efficiency of the system.
Learning Objectives
Upon completion of this module, you should be able to:
6A
analyze the myriad of factors that influence human comfort.
6B
recall the differences between various state-of-the-art home heating and cooling systems.
6C
list the various tests that can be used to detect home heating/cooling system leaks.
6D
explain the various methods used to seal duct leaks in homes.
Module 5 Reading Assignment
Krigger, J., & Dorsi, C. (2012). Residential Energy: Cost Savings and Comfort for Existing Buildings (6th ed.). Helena: Saturn Resource Management, Inc. Chapters 3 (pp. 86-100), 6, and 8.
Supplemental Reading Assignments (Required):
EERE (2011). HVAC: a guide for contractors to share with homeowners (Report No. PNNL-20241). Washington, D.C.: Buildings technologies program (pp. 1-68).
EPA (2009). A guide to energy efficient heating and cooling[Brochure]. Washington, D.C., (pp. 1-24).
EPA (2009). Duct sealing [Brochure]. Washington, D.C., (pp. 1-5).
Friedman, G. (2004). “Too hot/too cold diagnosing occupant complaints.” ASHRAE, (pp. 157-163).
Lecture Notes
Heating and Cooling Systems
There are four factors that contribute to a person’s comfort in a particular environment: air temperature, relative humidity, the mean radiant temperature, and the presence of air movement. When the temperature, moisture, radiant temperatures, and moving air are controlled in any environment, people will be comfortable.
Relative Humidity
The amount of moisture in the air is one of the factors that directly affects comfort whether a person is inside or outside. Relative Humidity (RH) is the amount of moisture in the air compared to the total amount of water that could be in the air if it were totally saturated. A weatherization service provider can measure relative humidity using a hygrometer or a relative humidity and temperature meter. A psychrometer is a basic hygrometer that is made of two thermometers. A reading of 50 percent relative humidity means that the air, at a specific temperature, contains 50 percent of the total amount of water it is capable of maintaining for saturation.
Mean Radiant Temperature
The mean radiant temperature is the average temperature of the surfaces in the environment. Warm air can hold more moi.
An Introduction to Basic HVAC ElementsAce Plumbing
HVAC systems are complex, with numerous elements that work together to perform various functions. In this pdf document, we'll go over the main components of an HVAC system and how they work together to keep your home comfortable. Let's get started!
using different refrigerants as working fluid,the variation in the dimensional parameters of evaporator ,compressor,condenser and expansion device are shown.
HVAC system Notes,HVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system NotesHVAC system Notes
Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
2. 02
PROLUSION
HVAC (heating, ventilation, and air conditioning) is the technology
of indoor and vehicular environmental comfort.
HVAC system design is a sub discipline of mechanical engineering,
based on the principles of Thermodynamics, Fluid Mechanics,
and Heat transfer.
HVAC systems use ventilation air ducts installed throughout a
building to supply conditioned air to a room through outlet vents,
called diffusers; and ducts to remove air through return-air grilles.
HVAC is important in the design of medium to large industrial and
office buildings such as skyscrapers and in marine environments
such as aquariums, where safe and healthy building conditions are
regulated with respect to temperature and humidity, using fresh air
from outdoors.
The three central functions of heating, ventilating, and airconditioning are interrelated, especially with the need to
provide thermal comfort and acceptable indoor air quality within
reasonable installation, operation, and maintenance costs.
3. 02
PROLUSION
HVAC systems can provide ventilation, reduce air infiltration, and maintain pressure
relationships between spaces.
The means of air delivery and removal from spaces is known as room air distribution.
The starting point in carrying out an estimate both for cooling and heating depends
on the exterior climate and interior specified conditions.
In modern buildings the design, installation, and control systems of these functions
are integrated into one or more HVAC systems.
For very small buildings, contractors normally capacity engineer and select HVAC
systems and equipment.
For larger buildings, building services designers and engineers, such as
mechanical, architectural, or building services engineers analyze, design, and
specify the HVAC systems.
Basing HVAC on a larger network helps provide an economy of scale that is often
not possible for individual buildings, for utilizing renewable energy sources such as
solar heat.
4. 02
INTRODUCTION
Thermodynamics is a branch of natural science concerned with heat and its relation
to energy and work. It defines macroscopic variables (such as temperature, internal
energy, entropy, and pressure) that characterize materials and radiation, and
explains how they are related and by what laws they change with time.
Fluid Mechanics : Fluid mechanics is the branch of physics that
studies fluids (liquids, gases, and plasmas) and the forces on them. Fluid mechanics
can be divided into fluid statics, the study of fluids at rest; fluid kinematics, the study
of fluids in motion; and fluid dynamics, the study of the effect of forces on fluid
motion.
Heat transfer is a discipline of thermal engineering that concerns the generation,
use, conversion, and exchange of thermal energy and heat between physical
systems. As such, heat transfer is involved in almost every sector of the
economy. Heat transfer is classified into various mechanisms, such as thermal
conduction, thermal convection, thermal radiation, and transfer of energy by phase
changes
5. 02
TERMINOLOGY
In heat transfer, conduction is the transfer of heat energy
by microscopic diffusion and collisions of particles or
quasi-particles within a body due to a temperature
gradient.
Convection is the concerted, collective movement of
groups or aggregates
of molecules within fluids(e.g., liquids, gases) and rheids,
either through advection or through diffusion or as a
combination of both of them.
Thermal radiation is electromagnetic radiation generated
by the thermal motion of charged particles in matter. All
matter with a temperature greater than absolute
zero emits thermal radiation.
6. 02
HEATING
The invention of central heating is often credited
to the ancient Romans, who installed systems of
air ducts called Hypocausts in the walls and floors
of public baths and private villas.
The use of water as the heat transfer medium is
known as Hydronics. These systems also contain
either duct work for forced air systems or piping
to distribute a heated fluid to radiators to transfer
this heat to the air.
The radiators may be mounted on walls or
installed within the floor to give floor heat.
Most modern hot water boiler heating systems
have a circulator, which is a pump, to move hot
water through the distribution system.
. This distribution system can be via radiators,
convectors (baseboard), hot water coils (hydroair) or other heat exchangers.
7. 02
VENTILATION
VENTILATION
Ventilation is the process of changing or
replacing air in any space to control
temperature or remove any combination
of moisture, odors, smoke, heat, dust,
airborne bacteria, or carbon dioxide, and
to replenish oxygen.
Ventilation includes both the exchange of
air with the outside as well as circulation of
air within the building
"Mechanical" or "forced" ventilation is
provided by an air handler and used to
control indoor air quality. Excess humidity,
odors, and contaminants can often be
controlled via dilution or replacement with
outside air. However, in humid climates
much energy is required to remove excess
moisture from ventilation air.
8. 02
VENTILATION
VENTILATION
In warm or humid months in many climates
maintaining thermal comfort solely via natural
ventilation may not be possible so conventional air
conditioning systems are used as backups.
An important component of natural ventilation
is air changes per hour: the rate of ventilation
through a room with respect to its volume.
For example, six air changes per hour means that
the entire volume of the space is theoretically
replaced with new air every ten minutes.
For human comfort, a minimum of four air
changes per hour is usually targeted.
The highest recommended replacement rates are
for crowded spaces like bars, night clubs, and
commercial kitchens at around 30 to 50 air
changes per hour
9. 02
AIR CONDITIONING
Air conditioning and refrigeration are provided through the removal of
heat.
Heat can be removed through Radiation, Convection, or Conduction.
A refrigerant is employed either in a heat pump system in which
a compressor is used to drive Thermodynamic refrigeration cycle, or in
a free cooling system which uses pumps to circulate a cool refrigerant
(typically water or a glycol mix).
Free cooling systems can have very high efficiencies, and are
sometimes combined with seasonal thermal energy storage so the cold
of winter can be used for summer air conditioning.
Common storage mediums are deep aquifers or a natural
underground rock mass accessed via a cluster of small-diameter, heat
exchanger equipped boreholes.
Some systems with small storages are hybrids, using free cooling early in
the cooling season, and later employing a heat pump to chill the
circulation coming from the storage.
10. 02
An HVAC system is responsible for moderating the temperature of a building’s
interior and maintaining it at a comfortable level for the inhabitants.
During the hot days of
summer, the air
conditioning kicks in,
providing much-needed
cool air.
In the frigid days of winter,
the system supplies heat.
12. 02
THE FURNACE
The furnace unit is typically fairly
large, requiring its own space within
a building.
It is often installed in the basement,
in the attic, or in a closet.
The furnace pushes the cold or hot
air outward into the ducts that run
through every room in the building.
Throughout the ducts, there are
vents that allow the warm or cool air
to pass into rooms and change their
interior temperature.
13. 02
THE HEAT EXCHANGER
Heat exchangers reside in the housing of
every furnace unit. When the furnace is
activated by the thermostat, the heat
exchanger begins to function as well.
Air is sucked into the heat exchanger, either
from the outside or from a separate duct
that pulls cool air out of the building’s rooms.
This type of duct is called a cold air return
chase.
When the cool air comes into the heat
exchanger, it is quickly heated and blown
out through the ducts to be dispersed into
the building.
If the furnace operates on gas, the heating is
accomplished by gas burners.
If it uses electricity, it is done via electric coils.
15. 02
THE EVAPORATOR COIL
Like heat exchangers, evaporator coils are also
part of the furnace unit. However, they serve the
opposite function to that of heat exchangers.
They are also attached to a different part of the
furnace.
Instead of being within the furnace housing, they
are installed inside a metal enclosure that is
affixed to the side or the top of the furnace.
Evaporator coils are activated when cool air is
needed. When triggered, the evaporator coil
supplies chilled air, which is then picked up by the
furnace blower and forced along the ducts and
out through the vents.
The internal design of an evaporator coil
resembles that of a car’s radiator.
Evaporator coils are connected to the HVAC
system’s condensing unit, which is typically
located on the exterior of the building.
16. 02
THE CONDENSING UNIT
The condensing unit is installed outside the
building, separate from the furnace.
Inside the condensing unit, a special kind
of refrigerant gas is cooled through the exchange
of heat with the air outside.
Then, it is compressed and condensed into liquid
form and sent through a tube or a line made of
metal.
This tube runs straight to the evaporator coil. When
the liquid reaches the coil, a series of small nozzles
spray the liquid, lowering its pressure and allowing
it to resolve back into gaseous form.
During the evaporation of liquid to gas, heat is
absorbed, causing a sudden drop in temperature
and supplying cold air for the furnace blowers.
The refrigerant gas is then sent back outside to the
condensing unit, and the process is repeated
again to generate additional cold air.
17. 02
THE REFRIGERANT LINES
The refrigerant lines are the metal tubes that carry the liquid to the evaporating
coil and return the gas to the condensing unit.
Refrigerant lines are usually made from aluminium or copper.
They are designed to be durable and functional under extreme temperatures.
18. 02
THE THERMOSTAT
The thermostat controls the function of the furnace.
It is directly connected to the furnace and includes
temperature-sensing technology as well as user
controls.
A thermostat is usually positioned somewhere within the
building where it can easily discern temperature and
remain accessible to users.
A large building may have more than one thermostat
to control different areas of the structure.
The inhabitants of the building can manually set the
thermostat to a certain temperature.
If the air in the room or building is too cold, the heat
exchanger kicks in and blows heat through the vents.
If the room is too warm, the condensing unit and
evaporator coil start to function, and the air
conditioning system sends cool air throughout the
building or to one particular section of the building.
19. 02
Heating ducts are put in during the construction of a home
or a building.
They are often run through the ceiling.
In each room, at least one rectangular opening is cut into
the duct so that a vent or vents can be installed.
THE DUCTS
20. 02
THE VENTS
Vents are usually rectangular in shape. They
are placed in the ceiling, with their edges
corresponding to the opening in the duct
above.
As warm or cool air pours through the ducts,
vents allow it to disperse into the rooms below.
Vents are usually made of metal, which can
handle a wide range of temperatures.
The vent is comprised of a rectangular edge or
frame, within which is a series of thin metal
slats.
The slats are angled to channel the air
downward.
Some vents also include a manual control that
lets users angle the air toward a different part
of the room depending on their preference.
21. 02
TYPES OF FURNACES
Furnaces can be divided into two main categories:
Single stage furnaces
Two-stage furnaces.
Both types of furnaces are further distinguished by their performance ratings.
The chart below explains the function of performance ratings.
Efficiency
Rating
80% efficiency
Meaning
Ducts collect and reuse 80 percent of the
generated heating or cooling energy
92% efficiency Ducts collect and redistribute 90 percent of the
or higher
energy created by the furnace unit
In furnaces with 80% or +92%efficiency, any energy that is not captured by
the ducts is lost, usually through the furnace housing or through vents
leading to the outside of the building.
22. 02
DEFINITIONS
The Coefficient of performance or COP of a heat pump is a ratio of heating or cooling provided to
electrical energy consumed.
𝑄
COP =
𝑊
Q is the heat supplied to or removed from the pump
W is the work consumed by the heat pump
Energy Efficiency Ratio : The EER is the ratio of output cooling energy (in BTU) to electrical input
energy (in Watt-hour)
EER =
𝑜𝑢𝑡𝑝𝑢𝑡 𝑐𝑜𝑜𝑙𝑖𝑛𝑔 𝑒𝑛𝑒𝑟𝑔𝑦 𝑖𝑛 𝐵𝑇𝑈
𝑖𝑛𝑝𝑢𝑡 𝑒𝑙𝑒𝑐𝑡𝑟𝑖𝑐𝑎𝑙 𝑒𝑛𝑒𝑟𝑔𝑦 𝑖𝑛 𝑊
Seasonal Energy Efficiency Ratio : It is the ratio of output cooling energy (in BTU) to electrical input
energy (in Watt-hour).
SEER is a representative measurement of how the system behaves over a season where the
outdoor temperature varies
SEER =
𝑂𝑈𝑇𝑃𝑈𝑇 𝐶𝑂𝑂𝐿𝐼𝑁𝐺 𝐸𝑁𝐸𝑅𝐺𝑌 𝑂𝐹 𝐴 𝐵𝑇𝑈 𝐼𝑁 𝐴 𝑆𝐸𝐴𝑆𝑂𝑁
𝐼𝑁𝑃𝑈𝑇 𝐸𝐿𝐸𝐶𝑇𝑅𝐼𝐶𝐴𝐿 𝐸𝑁𝐸𝑅𝐺𝑌 𝐼𝑁 𝑊ℎ
23. 02
DEFINITIONS
Kilo-Watt per Ton (kW/ton)
The efficiencies of large industrial air conditioner systems, especially
chillers, are given in kW/ton to specify the amount of electrical power that is
required for a certain power of cooling. In this case, a smaller value represents
a more efficient system.
Horse Power
Another unit in use in the US is the horse power (HP). This is a unit of power
and typically is used to specify the size of motors. It may also be used to
specify the input power of an air conditioning system. One HP is approximately
746 W.
Energy Star :
In the US, Energy Star is the Environmental Protection Agency’s (EPA’s)
indication for products that have high energy efficiency. it makes it easy for
consumers to identify and purchase products that have higher energy
efficiency than those products without such designation.