HEAT EXCHANGER DESIGN GOALS: Role of heat exchangers in chemical processing Basic concepts and terminology Types of heat exchangers Design methodology Sizing Design Rating
INTRODUCTION A. Types of Material Balance Problems B. Historical Perspective I. CONSERVATION OF MASS 5 A. Control Volumes B. Holdup or Inventory . Material Balance Basis D. Material Balances II. PROCESSES
DESIGN METHODOLOGY goaL-- Produce design for chemical plant that: Is economically acceptable and Is operable,ie., eIs safe → Is controllable Is reliable,and Is environmentally acceptable
DESIGN METHODOLOGY: INPUT-OUTPUT DECISIONS goaL-- Choose the process chemistry and feedstock most appropriate to the plant to be designed and determine the associated economic potential
DESIGN METHODOLOGY III: RECYCLE STRUCTURE OF THE PROCESS goAL-- Determine alternate recycle structures for the process based on reactor operating requirements
.Unsteady, aperiodic motion in which all three velocity components fluctuate→ mixing matter, momentum, and energy. Decompose velocity into mean and fluctuating parts: