459--Costing of air coolers

doi:10.1615/hedhme.a.000459

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Hagen-Poiseuille law Hagen-Rubens relation, between electrical and optical constants, Hall Taylor, N S, Halogenated hydrocarbons: Handley and Heggs equation for fixed bed pressure drop, Hankinson and Thomson method, for liquid density: Hardening (precipative) of stainless steels, Hardwick, R, Harris, D, Hausen equation for developing laminar flow, Hays, G F Headers in shell-and-tube heat exchangers, Heads, in heat exchangers: Heat and mass transfer: Heat exchanger design, introduction, Heat exchangers:

condensers, corrosion and other damage, costing, definitions and quantitative relationships, description of, design, double pipe, effectiveness of: entropy generation in, F-correction method for F-factor charts for, fouling of, gas-liquid pressure drop in, heat pipe, mechanical design: air-cooled, networks of, pinch analysis method for, numerical solution methods for: with calculation of flow pattern, plate fin, plate, thermal design of, P-NTU method for practical aspects of operation, pressure drop in headers, nozzles, and turnarounds, representation as interpenetrating continua, safety of shell-and-tube (single phase), thermal design of

Objectives and Background It's an article film coefficients, approximate, in, overall coefficients in,

Costing of air coolers It's an article

safety of tubeside rupture and subsequent relief,

suction line exchangers in refrigeration, twisted tube, with dimpled surfaces, with tube inserts, Θ-method for Θ-method chart for,

Heat of vaporisation (see Enthalpy of vaporisation), of pure substances Heat pipes: Heat pumping, relation to heat exchanger network design, Heat storage (see Regenerators and thermal energy storage) entropy generation in, Heat transfer: Heat transfer coefficient: Heat transfer media, Heat transfer salt, Heat transfer regimes: Heat of vaporization, Heated cavity reflectometer, Heating media, for reboilers, Heavy water, physical properties of, Heggs, P J, Helical coils of circular cross section: Helical coils of rectangular cross section, Helical inserts, for enhancement of heat transfer in boiling, Helium: Helmholtz reciprocity principle, in radiative heat transfer, Henry, J A R, Henry-Fauske model, for critical two-phase flow, Henry's law, for partial pressure, Heptadecane: Heptadecene: Heptane: 1-Heptanol: 1-Heptene: Herman, K W, Hermes, C L L, Heterogeneous conveyance in horizontal pipes, Heterogeneous nucleation in boiling, Hewitt, G F Hexachloroethane (Refrigerant 116): Hexacyclopentane, superheated vapor properties, Hexadecane: Hexadecene: 1,5-Hexadiene: Hexagonal cells, in free convection, Hexamethylbenzene: Hexane: Hexanoic acid: 1-Hexanol: 1-Hexene: Hexylbenzene: Hexylcyclohexane: Hexylcyclopentane, Hicks equation, for fixed-bed pressure drop, High pressure closures, ASME VIII code guidance for, High-chrome steels, thermal and mechanical properties, High-finned tubes, correlations for single-phase heat transfer in flow over, Hills, P D Hohlraum cavity, Holdup, in liquid-liquid flow, Holland, guide to national practice for mechanical design of heat exchangers, Homogeneous condensation (fog formation), Homogeneous model: Homogeneous nucleation: Honeycombs: Hopkins, D, Horizontal condensers: Horizontal cylinders: Horizontal layers, of fluid, free convection heat transfer in, Horizontal pipes: Horizontal shell-side evaporator, Horizontal surfaces: Horizontal thermosiphon reboilers: Horizontal tube-side evaporator, Horizontal tubes: Hottel's rule, in absorption of radiation by gases, Hsu criterion, for onset of nucleate boiling, Hybrid cooling towers, Hydraulic conveyance: Hydraulic expansion, of tubes into tube sheets in shell-and-tube heat exchangers, Hydraulic turbine, lost work in, Hydraulic resistance, in flow of supercritical fluids, Hydraulically smooth surface, Hydrazine: Hydrocarbons: Hydrodynamic entrance length, in single-phase flow in ducts, Hydrogen: Hydrogen bromide: Hydrogen chloride: Hydrogen cyanide: Hydrogen fluoride: Hydrogen iodide: Hydrogen peroxide: Hydrogen sulfide: Hydrostatic testing of shell-and-tube heat exchangers, Hysteresis:

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HEDH

A B C D E F G H

Objectives and Background It's an article film coefficients, approximate, in, overall coefficients in,

Costing of air coolers It's an article

safety of tubeside rupture and subsequent relief,

suction line exchangers in refrigeration, twisted tube, with dimpled surfaces, with tube inserts, Θ-method for Θ-method chart for,

I J K L M N O P Q R S T U V W X Y Z

H Heat exchangers: shell-and-tube (single phase), thermal design of overall coefficients in,

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Costing of air coolers

DOI 10.1615/hedhme.a.000459

4.8.3 Costing of air coolers

A. A. Smith

An air cooler is a combination of pressure vessel, structure, mechanical equipment, and electric drive. As such, cost levels vary with such diverse parameters as the following:

Fin tube type
Tube length
Header type
Structure finish
Materials of construction
Noise limits
Drive type

Approximate air cooler costs are most often quoted on the basis of dollars per square meter of outside bare tube surface. In order to detail variations in cost at 1988 levels, let us consider a typical unit:

Size	2,500 m² bare surface
Core tube	Steel-14 BWG, 25.4-mm OD
Tube length	9 m
Fin pitch	2.3 mm
Fin material	Aluminum
Fans	4-bladed 60 m/s tip speed
Drive	22 KW max; V belt
Draft	Forced
Header	Plug
Pressure	700 kPa
Structure finish	Galvanized
Walkways	Header and motor access
Ladders	To grade
Tube rows	6
Fin height	16 mm

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Costing of air coolers

4.8.3 Costing of air coolers

A. A. Smith

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