Basic hvac systems and its working principle

For students and technician who are interested about HVAC

1. Introduction to HVAC Systems The primary function of HVAC systems is to provide healthy and comfortable interior conditions for occupants; well-healthy and comfortable interior conditions for occupants; well- designed, efficient systems do this with minimal non-renewable designed, efficient systems do this with minimal non-renewable energy and air, and water pollutant emission s. energy and air, and water pollutant emissions.

2. Introduction to HVAC Systems The purpose of he purpose of HVAC design HVAC design is both high indoor air quality and energy is both high indoor air quality and energy efficiency. These dual considerations require an integrated design efficiency. These dual considerations require an integrated design approach. Rigs heating, approach. Rigs heating, ventilation, and air conditioning ventilation, and air conditioning system (HVAC) creates a climate system (HVAC) creates a climate that allows for maximum comfort by that allows for maximum comfort by compensating for changing climatic compensating for changing climatic conditions. conditions

3. Introduction to HVAC Systems Heating, ventilating and air-Heating, ventilating and air- conditioning (HVAC) systemsconditioning (HVAC) systems reduce the environmentalreduce the environmental impact of rigs/buildings in severalimpact of rigs/buildings in several key ways. The most importantkey ways. The most important function of a HVAC systems isfunction of a HVAC systems is to provide the rig/buildings occupantsto provide the rig/buildings occupants with healthy and comfortable interiorwith healthy and comfortable interior conditions. A carefully designed, efficientconditions

4. HVAC System Types Types of System Designs - There are several major heating, ventilating, and air Types of System Designs - There are several major heating, ventilating, and air conditioning system types in wide spread use today. These are air systems, hydronic and steam systems, and unitary type systems. Most systems in use today fall into one of and steam systems, and unitary type .. Each type of system has advantages and dis-advantages. advantages and disadvantages. Air cooledAir cooled ChillersChillers

5. Air Cooled Chiller Advantages • Lower installed costLower installed cost • Quicker availabilityQuicker availability • No cooling tower or condenser pump required • Less maintenanceLess maintenance • No mechanical room required

6. Water Cooled  1-Sea Water cooled Chillers  2-Fresh Water cooled Chillers

7.  Water-Cooled Chiller advantages  Higher efficiency Higher efficiency • Custom selection in larger sizes • Large tonnage capabilities • Indoor Chiller location Indoor Chiller location • Longer life Longer life

8. Purpose of an air handling system Purpose of an air handling system

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