Department of Mechanical and Industrial Engineering, University of Toronto MIE1224H - Heating, Ventilating, and Air Conditioning (HVAC) Winter 2016 Babak Samareh. Ph.D., CFD Consultant and Analyst, Simulent Inc. samareh@mie.utoronto.ca Course Description: Residential and industrial buildings require heating, ventilating, and air conditioning systems in order to provide a comfortable living and working environment. This course is designed to explore the fundamentals of HVAC systems. The first step to achieve this goal is to understand the Psychrometrics which deals with the properties of moist air and how it responds to different air conditioning processes. In the next step, some of the common elements of HVAC systems are studied, followed by air quality requirements including thermal comfort, physiological considerations and environmental indices. The last step is the estimation of a building’s heat gain and loss through heat transmission in building structure as well as solar radiation, and overall heat transfer coefficient. Having access to this data, space heat loads, cooling loads, and energy cost calculations can be conducted. Course Objectives: At the end of the course student will be familiar with the following concepts • • • • • • Applying the concepts of thermodynamics and psychrometrics to heating and cooling analysis Using basic heat transfer laws and solar calculations to estimate heat gain and loss of a building Employing fluid dynamics concepts in order to design or select air handling devices and ducts Evaluating indoor air quality and designing thermal comfort conditions Calculating energy and estimating seasonal energy cost HVAC control systems Lectures: Mondays, 6:00pm – 9:00pm, GB-221 Office Hours: After the lecture or by appointment Teaching Assistant: Nazli Saranjam (nazlis@mail.utoronto.ca), BA-8143 Course Evaluation: (May change during the semester) • • • Design project Problem sets Midterm 45% 20% 35% (March 7) Course Project: Students will cooperate in teams of 3 to 4 to calculate the heating and cooling load of a building they choose. The project includes calculations of solar radiation, heat gains and loss, energy cost for different seasonal operating conditions, and commenting on the efficiency of the system currently installed. Course Material: Heating and Cooling of Buildings: Design for Efficiency, Revised Second Edition, by Jan F. Kreider, Peter S. Curtiss, and Ari Rabl, CRC Press, 2008 http://www.amazon.com/Heating-Cooling-Buildings-Efficiency-Engineering/dp/1439811512 Page | 1 Course Schedule Week Lecture Date 1 Jan 11 Introduction to Air Conditioning Systems, Heat Transfer, Thermodynamics, and Fluid Systems 2-3 2 Jan 18 Introduction to Air Conditioning Systems, Heat Transfer, Thermodynamics, and Fluid Systems 3-5 3 Jan 25 Psychrometrics, Conditioning Processes, and Thermal Comfort 4 4 Feb 1 Solar Radiation 6 5 Feb 8 Heating and Cooling Loads 7 6 Feb 15 No Lecture (Family Day and Reading Week) 7 Feb 22 Heating and Cooling Loads 7 8 Feb 29 Heat Generation and Transfer Equipment 9 9 Mar 7 No Lecture (Midterm Exam) 10 Mar 14 Cooling equipment 10 11 Mar 21 Secondary Systems for Heating and Cooling 11 12 Mar 28 HVAC Control Systems 12 Lecture Topic Chapters Final Project Assignment and Setup 13 Apr 4 Design for Efficiency 14 Page | 2 Course Outline Introduction to Air Conditioning Systems, Heat Transfer, Thermodynamics, and Fluid Systems • • • • • • Fundamental physical concepts HVAC components and distribution systems HVAC systems overview Elements of heat transfer for buildings Thermodynamic processes in buildings Flow in pipes, pumps and fans, and pressure drop Psychrometrics, Conditioning Processes, and Thermal Comfort • • • • • • Moist air and standard atmosphere Fundamental thermodynamic parameters Adiabatic saturation and wet bulb temperature Psychrometrics chart Classic moist air processes Thermal Comfort Solar Radiation • • • • • Solar geometry Extraterrestrial solar gain Solar gain data and models Sol-Air temperature Windows Heating and Cooling Loads • • • • • • Principle of load calculation Storage effects Zones Heating loads Cooling loads Dynamic load calculation Heat Generation and Transfer Equipment • • • • Furnaces Boilers Heat pumps Coils and heat exchangers Cooling equipment • • • • Rankin refrigeration cycles Absorption cycle Chillers Tooling towers and evaporative coolers Page | 3 Secondary HVAC Systems • • • • Air distribution systems Ducts and duct design Piping systems and design HVAC system design sizing and energy calculation HVAC Control Systems • • • Introduction Control hardware Control system design considerations Design for Efficiency • • • • Design elements and recommendations Performance indices for heating and cooling Residential buildings Commercial building Page | 4