CHEMATE 151 THERMODYNAMICS

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CHE/MATE 151- THERMODYNAMICS

• INTRODUCTION

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REVIEW GREENSHEET

• TEXT
• STRUCTURE
• SCHEDULE
• HOMEWORK
• EXAMS
• GRADING
• COURSE OBJECTIVES

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THERMODYNAMICS

• THE PHYSICS OF ENGINEERING
• USED TO MODEL TRANSPORT PROCESSES
• MOMENTUM
• HEAT
• MASS
• INCORPORATES CHEMICAL AND PHYSICAL PROPERTIES
• PROVIDES LIMITS TO REAL PROCESSES

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MOMENTUM TRANSPORT

• OCCURS IN FLOW OF FLUIDS
• LAMINAR
• TURBULENT
• http//www.omega.com/techref/images/fi1.gif

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HEAT TRANSFER

• CONDUCTION
• CONVECTION
• RADIATION

http//www.research.ibm.com/journal/rd/431/armacos
t.html
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MASS TRANSFER

• MOVEMENT OF SOLUTE BETWEEN PHASES
• CONCENTRATION BASED
• DISTRIBUTION BETWEEN PHASES
• RATE BASED
• MEMBRANES
• SIZE BASED
• FILTRATION

http//www.treehugger.com/files/2006/06/solar_powe
red_a.php
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EXAMPLE

• COMPARISON OF AIR CONDITIONING SYSTEMS
• CONVENTIONAL - ELECTRICITY
• ABSORPTION WASTE HEAT

http//www.etatech.us/Absorption-AC/Heat-Powered-C
ompressor.pdf
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COEFFICIENT OF PERFORMANCE BASIS

• DEFINED AS

http//www.etatech.us/Absorption-AC/Heat-Powered-C
ompressor.pdf
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PROPERTIES OF MATERIALS

• REQUIRED TO EVALUATE THE TRANSPORT MODELS
• THERMODYNAMIC PROPERTIES AT EQUILIBRIUM
  CONDITIONS
• TRANSPORT PROPERTIES UNDER DYNAMIC CONDITIONS

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MODELS FOR TRANSPORT

• SIMPLE MODELS
• ISOTHERMAL PIPEFLOW
• CONDUCTION HEAT TRANSFER
• STEADY-STATE STEADY-FLOW PROCESSES
• MORE COMPLEX MODELS
• HEAT TRANSFER BETWEEN FLUIDS THROUGH A SOLID
  INTERFACE
• FLUID PUMPING PROCESSES
• EVAPORATIVE COOLING WITH THREE HEAT TRANSFER
  MODES CONSIDERED

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UNITS FOR MODELS
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WORK RELATIONSHIPS
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EXAMPLE