HVAC 1.pptx - Energy Management in HVAC Systems Part 1 Fundamentals of HVAC Systems niversity of Jordan UJ Outline • Introduction to HVAC principles

HVAC 1.pptx - Energy Management in HVAC Systems Part 1...

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niversity of Jordan - UJ Energy Management in HVAC Systems Part 1: Fundamentals of HVAC Systems
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niversity of Jordan - UJ Outline Introduction to HVAC principles HVAC system components Human thermal comfort HVAC system types Cooling equipment Vapor compression cycle Chillers Chillers performance 2
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niversity of Jordan - UJ Introduction The heating, ventilating, and air conditioning (HVAC) system for a facility is the system of motors, ducts, fans, controls, and heat exchange units which delivers heated or cooled air to various parts of the facility. The purpose of the HVAC system is to add or remove heat and moisture and remove undesirable air components from the facility in order to maintain the desired environmental conditions for people, products or equipment. Providing acceptable indoor air quality is a critical function of the HVAC system, and air movement to remove odors, dust, pollen , etc. is necessary for comfort and health. 3
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niversity of Jordan - UJ Introduction The HVAC system is responsible for a significant portion of the energy use and energy cost in most residential and commercial buildings. Because many industrial facilities do not have heated or cooled production areas , HVAC energy use does not account for as great a portion of the total energy use for these facilities. However, a number of manufacturing plants are fully heated and air conditioned, and almost all industrial facilities have office areas that are heated and cooled. Thus, looking for ways to save on the energy costs of operating a facility’s HVAC system is an important part of any energy management program. 4
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niversity of Jordan - UJ Introduction Many facilities have HVAC systems that were designed and installed during periods of low energy costs ; these are often relatively expensive to operate because energy efficiency was not a consideration in the initial selection of the system. In addition, many HVAC systems are designed to meet extreme load conditions of very hot or very cold weather; they are then poorly matched to the average conditions that are experienced most of the time. Thus, improving the operation of the HVAC system provides many opportunities to save energy and reduce costs . 5
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niversity of Jordan - UJ How HVAC Systems Work? Air in a facility absorbs heat from lights, people, industrial processes, and the sun, and air conditioning removes the excess heat in order to provide a comfortable working environment. The air conditioning system also removes excess humidity. In periods of cold weather, the heating system adds heat if the working environment is too cold for worker comfort. During the heating season, moisture may be added to increase the humidity .
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