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This document discusses central air conditioning systems. It introduces the authors and defines air conditioning as cooling and dehumidifying indoor air for thermal comfort. It describes the main components of a central air conditioning system, which includes a two-stage compressor, condensing unit, evaporating unit known as an air handling unit, ducts, filters, thermostats, and optional auxiliary units. The document distinguishes between comfort air conditioning for buildings and process air conditioning designed for specific industrial processes.
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Advantages and Disadvantage of A.C.
Ideal room temperature
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Absolute humidity
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Sensible heat
Evaporating Cooling
Condensation
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Working
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Air circulation system-room air cycle and
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Ventilation
Ventilation systems in buildings serve several key functions:
1. To provide healthy indoor air quality by removing odors, smoke and carbon dioxide while replenishing oxygen.
2. To maintain thermal comfort by controlling temperature and removing excess moisture.
3. To cool building structures.
Natural ventilation relies on pressure differences and temperature differences to move air through openings, while mechanical ventilation uses fans and ducts to control indoor air movement and quality. The type of ventilation used depends on factors like room size, occupancy levels, and ability to effectively ventilate without mechanical assistance.
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AIR CONDITIONING LOAD CALCULATIONS PRESENTATIONS by EVRAJU
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This document provides an introduction to HVAC systems. It discusses the primary functions of HVAC systems to provide healthy and comfortable interior conditions while minimizing energy usage and emissions. It describes different types of HVAC systems including air systems, hydronic/steam systems, and unitary systems. It also discusses key HVAC components like air handling units, fans, pumps, ductwork, controls and their purposes.
Air conditioning for large multistory buildings
Most large multistory buildings use centralized air conditioning equipment located on the roof or in the basement. The roof allows for fresh air intake and heat rejection while the basement provides easy utility connections and noise isolation. Common central air conditioning systems include central plants, variable air volume, terminal reheat, multizone, double duct, induction, and fan coil systems. Fan coil systems circulate air over hot or cold water coils in fan coil units located in individual zones to control temperature.
Types of ac and humidity control
This document discusses different types of air conditioning systems based on their arrangement and purpose. It describes central zoned and unitary air conditioning systems. Central systems serve multiple rooms and have components like compressors and coils located outside with air circulated through ducts. Unitary systems have equipment and controls packed into a single unit for room-level cooling. The document also covers humidity control methods like mechanical and desiccant dehumidification using materials like silica gel to control moisture levels for various industrial and commercial applications.
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The document discusses the key components and operation of chilled water systems. It describes the main components as chillers, cooling towers, pumps, piping and air handling units. It then covers topics such as chiller types, flow calculations, recommended flow velocities, chiller efficiency ratings, expansion tanks, piping basics including materials and valves used, and testing and balancing (TAB) of the system.
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Hvac chilled water distribution schemes
I am working for LG Airconditioners AL Hassan Gazi Ibrahim Shaker Co, Jeddah SaudiArabia as Senior Technical Engineer,Mechanical Engineer.
HVAC Cooling Load Calculation
This document discusses principles and methods for estimating cooling loads on buildings. It covers heat transfer mechanisms like conduction, convection and radiation. It explains factors that affect human comfort and methods to estimate different components of a cooling load, including conduction through surfaces, solar heat gain through windows, internal heat gains from occupants, lights, equipment and infiltration. An example calculation is provided to estimate the sensible and latent cooling loads on an office space from these various components. The purpose is to understand and quantify all sources of heat gain on a building to properly size air conditioning equipment.
Heating and-air-conditioning-of-building-faber-and-kell-chapter-14-air-condit...
The document discusses air conditioning systems and principles. It defines air conditioning as providing and maintaining a desirable internal atmospheric environment regardless of external conditions. It discusses traditional central plant air conditioning systems that use chilled water, direct expansion cooling coils, and steam or electric heating coils. It also discusses zoned air conditioning systems that divide a building into zones served by separate central plants or floors served by intermediate plant rooms to reduce duct sizes.
Types of air conditioner
Here you get a clear idea about all types of air conditioner. Both Domestic and commercial air conditioner. Also get website of Melbourne Air conditioning & Heating's. From where you will get the Air conditioning service information near Melbourne, victoria area
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Building services systems in sri lanka ac
An AC system is not only cools the room, that system do many things to make our life comfortable. It removes dust and dirt and fill with fresh air
Air condition system makes our life very comfortable.
We can protect hot or cold weather by air conditioning system
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Hvac introduction-Basics of HVAC
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For more info: https://www.shopdiyparts.com/hvac-all
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The document provides an overview of heating, ventilation, and air conditioning (HVAC) systems. It defines HVAC and its purpose to condition air and maintain temperature, humidity, and air quality. It then describes the basic refrigeration cycle and various HVAC system types, including window units, split systems, packaged units, and central air conditioning. Key HVAC components like compressors, condensers, evaporators, and ductwork are also outlined. Finally, the document discusses HVAC goals, potentials, challenges, and maintenance.
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The document provides an overview of HVAC (Heating, Ventilation and Air Conditioning) systems. It discusses what HVAC is, the components that make up an HVAC system like air conditioners, furnaces, ductwork and thermostats. It also covers the functions of HVAC systems to control temperature, humidity and air movement. The document outlines some industry standards and codes for HVAC design and installation like IS 659 and NBC. It discusses factors like desirable room temperature, ventilation requirements and inside design conditions for cooling and heating.
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To get the ppt file, follow and message me on linkedin. Link- linkedin.com/in/aryan-goyal-6b0943221
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This document provides an overview and introduction to centralized air conditioning systems. It discusses the key components of a chilled water central air conditioning system, including chillers, cooling towers, air handling units, and grills. It describes how chilled water is circulated throughout a building to cool air in air handling units serving different floors. Issues commonly faced by maintenance personnel are also listed, such as surging problems, difficulty maintaining condenser approach, and ensuring proper water quality and flows. The document focuses on analyzing a large commercial building's HVAC system in Bangalore, India as a case study.
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Mechanical Equipment
Central air conditioning systems have several key components:
1) A central plant room contains the chiller, compressor, condenser, and other equipment that cools water which is circulated throughout the building.
2) Air handling unit rooms include air handling units that blow cooled air into ductwork leading to individual rooms.
3) Air conditioned rooms receive cooled supply air through ceiling diffusers and return warm air to the air handling units through floor diffusers.
4) A cooling tower cools the water used by the central chiller and condenser before it is recirculated.
The Greatest Guide to Air Conditioning Unit Fitted.pdf
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CHAP 4 HVAC.pdf
The document discusses heating, ventilation, and air conditioning (HVAC) systems and indoor air quality. It describes how HVAC systems work and the components involved, including the refrigeration cycle, air handling units, ducting, and different system types like window units, split units, and central air conditioning. It also discusses factors that affect indoor air quality like temperature, humidity, airflow, and maintenance of HVAC equipment. Poor indoor air quality can cause health issues and impact productivity.
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Central Ac Powerpoint
- 1. CENTRAL AIR CONDITIONING SYSTEMS
- 2. PROJECT CONCEIVED BY - Varun Hirlekar Gaurav Joshi Atul Jethmalani Rohan Jain
- 4. Types of Air Conditioning Systems - Window Air Conditioning System Split Air Conditioner System Packaged Air Conditioners Central Air Conditioning Plants Chilled-water and Cooling-tower AC Units
- 5. CENTRAL AIR-CONDITIONING- Central Air-conditioning applications are divided into two types - 1) Comfort 2) Process
- 6. COMFORT AIR-CONDITIONING Building indoor environment that remains relatively constant in a range preferred by humans despite changes in external weather conditions or in internal heat loads. Allows buildings to be taller . Comfort applications – Low-Rise Residential buildings High-Rise Residential buildings Institutional buildings Industrial spaces Transportation
- 7. PROCESS AIR-CONDITIONING Suitable environment for a process being carried out, regardless of internal heat and humidity loads and external weather conditions. The needs of the process that determine conditions, not human preference. Process applications – Hospital operating theatres Clean rooms for the production of integrated circuits, pharmaceuticals Aircraft air conditioning Food cooking and processing areas
- 8. Design features: Two stage compressor A condensing unit The evaporating unit – known as AHU Ducts Air conditioner filters Thermostats Auxiliary units – humidifier , preheater , air quality analyzer