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 \n1.6 Environment for Human Comfort  \n1.7 Extras  \nSection 2 Introduction to HVAC Systems   08  \n2.1 Introduction  \n2.2 Introducing the Psychrometric Chart  \n2.3 Basic Air-Conditioning System  \n2.4 Zoned Air-Conditioning Systems  \n2.5 Choosing an Air-Conditioning System  \n2.6 System Choice Matrix  \n2.7 Extras  \nSection 3 Thermal Comfort   23  \n3.1 Introduction: What is Thermal Comfort?  \n3.2 Seven Factors Influencing Thermal Comfort  \n3.3 Conditions for Comfort  \n3.4 Managing Under Less Than Ideal Conditions  \n3.5 Extras  \nSection 4 Ventilation and Indoor Air Quality   26  \n4.1 Introduction  \n4.2 Air Pollutants and Contaminants  \n4.3 Indoor Air Quality Effects on Health and Comfort  \nHVAC SIMPLIFIED™  \n4.4 Controlling Indoor Air Quality  \n4.5 The Use of Carbon Dioxide to Control Ventilation Rate  \n4.6 Extras  \nSection 5 Zones   32  \n5.1 Introduction  \n5.2 What is a Zone?  \n5.3 Zoning Design  \n5.4 Controlling the Zone  \nSection 6 Single zone Air Handlers and Unitary Equipment   37  \n6.1 Introduction  \n6.2 Examples of Buildings with Single-zone Package Air-Conditioning Units  \n6.3 Air-Handling Unit Components  \n6.4 Refrigeration Equipment  \n6.5 System Performance Requirements  \n6.6 Rooftop Units  \n6.7 Split Systems  \n6.8 Extras  \nSection 7 Multiple Zone Air   49  \n7.1 Introduction  \n7.2 Single-Duct, Zoned Reheat, Constant Volume Systems  \n7.3 Single-Duct, Variable Air Volume Systems  \n7.4 By-pass Box Systems  \n7.5 Constant Volume Dual-Duct, All-Air Systems  \n7.6 Multizone Systems  \n7.7 Three-deck Multizone Systems  \n7.8 Dual-Duct, Variable Air Volume Systems  \n7.9 Dual Path Outside Air Systems  \n7.10 Extras  \nHVAC SIMPLIFIED™  \nSection 8 Hydronic Systems   64  \n8.1 Introduction  \n8.2 Natural Convection and Low Temperature Radiation Heating Systems  \n8.3 Panel Heating and Cooling  \n8.4 Fan Coils  \n8.5 Two Pipe Induction Systems  \n8.6 Water Source Heat Pumps  \n8.7 Extras  \nSection 9 Hydronic System Architecture   76  \n9.1 Introduction  \n9.2 Steam  \n9.3 Water Systems  \n9.4 Hot Water  \n9.5 Chilled Water  \n9.6 Condenser Water  \n9.7 Extras  \nSection 10 Central Plants 90  \n10.1 Introduction  \n10.2 Central Plant Versus Local Plant in a Building  \n10.3 Boilers  \n10.4 Chillers  \n10.5 Cooling Towers  \n10.6 Extras  \nSection 11 Controls   99  \n11.1 Introduction  \n11.2 Basic Control  \n11.3 Typical Control loops  \n11.4 Introduction to Direct Digital Control, DDC  \n11.5 Direct Digital Control of an Air-Handler  \n11.6 Architecture and Advantages of Direct Digital Controls  \nHVAC SIMPLIFIED™  \nSection 12 Energy Conservation measures   110  \n12.1 Introduction  \n12.2 Energy Considerations for Buildings  \n12.3 ASHRAE/IESNA Standard 90.1  \n12.4 Heat Recovery  \n12.5 Air-Side and Water-Side Economizers  \n12.6 Evaporative Cooling  \n12.7 Control of Building Pressure  \n12.8 Extras  \nHVAC SIMPLIFIED™  \n\n| HVAC SIMPLIFIED™\u003Cbr>Section 1- Introduction To HVAC |  |\n| --- | --- |\n| Purpose of this Section:\u003Cbr>1. Define HVAC (heating, ventilating and air cond","cbCaivMONiMIEPIK","https://ap.wps.com/l/cbCaivMONiMIEPIK","pdf",6900086,114,"English","# Section 1 Introduction to HVAC\n## 1.1 Overview\n## 1.2 History of HVAC","[{\"question\":\"What does HVAC stand for and what does it include?\",\"answer\":\"HVAC stands for heating, ventilating, and air conditioning. It covers temperature control, humidity control, outside air ventilation, filtration of airborne particles, and air movement in occupied spaces.\"},{\"question\":\"Why is HVAC more than just warming or cooling?\",\"answer\":\"The purpose of an HVAC system is to improve indoor air quality and provide comfort for occupants, not only to heat or cool spaces.\"},{\"question\":\"How did HVAC develop over time?\",\"answer\":\"Early heating used fire and natural air draft for ventilation. 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