Heat exchangers permit exchange of energy from one fluid to another, usually without permitting physical contact between the fluids. The following configurations are commonly used in the power and process industries. | CHAPTER 52 HEAT EXCHANGERS VAPORIZERS CONDENSERS Joseph W. Palen Heat Transfer Research Inc. College Station Texas HEAT EXCHANGER TYPES AND CONSTRUCTION 1607 Shell and Tube Heat Exchangers Plate-Type Heat 1607 Exchangers Spiral Plate Heat 1610 Exchangers Air-Cooled Heat 1610 Exchangers 1611 Compact Heat Exchangers 1611 Boiler Feedwater Heaters Recuperators and 1613 Regenerators 1613 ESTIMATION OF SIZE AND COST Basic Equations for 1613 Required Surface Mean Temperature 1614 Difference Overall Heat-Transfer 1615 Coefficient 1615 Pressure Drop 1616 RATING METHODS Shell and Tube 1616 Single-Phase Exchangers 1616 Shell and Tube Condensers 1619 Shell and Tube Reboilers and Vaporizers 1622 Air-Cooled Heat Exchangers 1625 Other Exchangers 1627 COMMON OPERATIONAL PROBLEMS 1627 Fouling 1627 Vibration 1628 Flow Maldistribution 1629 Temperature Pinch 1629 Critical Heat Flux in Vaporizers 1630 Instability 1630 Inadequate Venting Drainage or Blowdown 1630 USE OF COMPUTERS IN THERMAL DESIGN OF PROCESS HEAT EXCHANGERS 1631 Introduction 1631 Incrementation 1631 Main Convergence Loops 1631 Rating Design or Simulation 1632 Program Quality and Selection 1633 Determining and Organizing Input Data 1633 HEAT EXCHANGER TYPES AND CONSTRUCTION Heat exchangers permit exchange of energy from one fluid to another usually without permitting physical contact between the fluids. The following configurations are commonly used in the power and process industries. Shell and Tube Heat Exchangers Shell and tube heat exchangers normally consist of a bundle of tubes fastened into holes drilled in metal plates called tubesheets. The tubes may be rolled into grooves in the tubesheet welded to the tubesheet or both to ensure against leakage. When possible .
