PowerPoint Presentation Prepared by Yiding Cao, Professor Department of Mechanical and Materials Engineering, FIU Textbook: McQuiston, F.C., Parker, J.D., and Spitler, J.D. Sixth Edition, Wiley & Sons ISBN Heating, Ventilating, and Air Conditioning – Analysis and Design

Year-round control of the indoor environment is essential to the quality of our life. The development and industrialization of the United States, especially the southern states such as Florida, would never have been possible without control of indoor climate. Escalating energy costs in more recent times have caused increased interest in efficient operation of the control systems ( The power consumption of air conditioning systems for buildings accounts for approximately 12.7% of primary energy consumption in buildings and produces 13% of CO 2 emissions from buildings in the US.). There has also been an increasing awareness of the importance of comfort and indoor air quality for both health and performance. Chapter 1: Introduction

The tools and methods for the arts and sciences of heating, ventilating, and air conditioning (HVAC) continue to change, but many of the fundamentals of good system design have not changed and still depend heavily on basic engineering matter. These basic elements of HVAC system design are emphasized in this text. Some recent developments, as well as procedures for designing functional, well- controlled, and energy-efficient systems will be presented. Thermodynamics, Fluid Mechanics, Heat Transfer, and System Dynamics provide foundations for this application related class. Introduction

In space conditioning, heating is (a) to bring a space up to a higher temperature than existed previously, or (b) to replace the energy being lost to colder surroundings by a space so that desired temperature range may be maintained. Fundamental Physical Concepts - Heating

Cooling is the transfer of energy from a space, or from air supplied to a space, to remove the energy being gained by that space. Energy gain to a space is typically from warmer surroundings and sunlight, or from internal sources within the space, such as occupants, lights, and machinery. Since the conditioned space is maintained at a lower temperature than the ambient temperature, work is needed to removed the heat from the space. Cooling is generally more difficult and expensive to realize, and will be the emphasis of this class. Cooling

To maintain desired humidity levels in a conditioned space by reducing the amount of water vapor in an air stream. This is achieved through condensation and removal of moisture in a heat exchanger coil during the cooling process. Dehumidification

In cold weather there is a tendency to have insufficient moisture in the conditioned space for comfort. Water vapor is often transferred to the heated supply air.. Humidifying

Energy and power. Peak demand cost. Operating expenses. The present value of future costs or income. Other Topics