tailieunhanh - Sổ tay tính toán cơ khí P11

Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS SECTION 11 HEAT TRANSFER AND HEAT EXCHANGE Selecting Type of Heat Exchanger for a Specific Application Shell-and-Tube Heat Exchanger Size Boiler-Tube Steam-Generating Capacity Heat Exchanger Actual Temperature Difference Fouling Factors in Heat-Exchanger Sizing and Selection Heat Transfer in Barometric and Jet Condensers Selection of a Finned-Tube Heat Exchanger Spiral-Type Heating-Coil Selection Shell-and-Tube Heat Exchanger Design Analysis Designing Spiral-Plate Heat Exchangers Spiral-Tube Heat Exchanger Design Heat-Transfer Design for Internal Steam Tracing of Pipelines Designing Heat-Transfer Surfaces for External Heat Tracing of Pipelines Sizing Electric Heaters for Industrial Use Economizer Heat Transfer Coefficient Air-Cooled Heat Exchangers: Preliminary Selection Heat. | Source HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS SECTION 11 HEAT TRANSFER AND HEAT EXCHANGE Selecting Type of Heat Exchanger for a Specific Application Shell-and-Tube Heat Exchanger Size Heat Exchanger Actual Temperature Difference Fouling Factors in Heat-Exchanger Sizing and Selection Heat Transfer in Barometric and Jet Condensers Selection of a Finned-Tube Heat Exchanger Spiral-Type Heating-Coil Selection Sizing Electric Heaters for Industrial Use Economizer Heat Transfer Coefficient Boiler-Tube Steam-Generating Capacity Shell-and-Tube Heat Exchanger Design Analysis Designing Spiral-Plate Heat Exchangers Spiral-Tube Heat Exchanger Design Heat-Transfer Design for Internal Steam Tracing of Pipelines Designing Heat-Transfer Surfaces for External Heat Tracing of Pipelines Air-Cooled Heat Exchangers Preliminary Selection Heat Exchangers Quick Design and Evaluation SELECTING TYPE OF HEAT EXCHANGER FOR A SPECIFIC APPLICATION Determine the type of heat exchanger to use for each of the following applications 1 heating oil with steam 2 cooling internal combustion engine liquid coolant 3 evaporating a hot liquid. For each heater chosen specify the typical pressure range for which the heater is usually built and the typical range of the overall coefficient of heat transfer U. Calculation Procedure 1. Determine the heat-transfer process involved In a heat exchanger one or more of four processes may occur heating cooling boiling or condensing. Table 1 lists each of these four processes and shows the usual heat-transfer fluids involved. Thus the heat exchangers being considered here involve a oil heater heating vapor-liquid b internal-combustion engine coolant cooling gas-liquid c hot-liquid evaporation boiling liquid-liquid. Downloaded from Digital Engineering Library @ McGraw-Hill Copyright 2006 The McGraw-Hill Companies. All rights .