2000 Hook-up Book - Spirax Sarco

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HOOK-UP DIAGRAMS 120 Condensate from high pressure loads releases steam by flashing as it passes to the lower pressures, downstream of the high pressure traps. The mixture of steam and condensate is readily separated in Flash Vessels of appropriate dimensions and proportions. A supply of Low Pressure steam then becomes available for use on any application which can accept steam at this low pressure, or the separated steam may simply be taken into the LP steam mains, where it is supplemented through pressure reducing valves, for general plant use. Where the supply of flash steam may at times exceed the demand from the LP system, the surplus flash steam can be discharged through a back pressure control valve. This is set at a few psi above the normal LP steam pressure, but below the setting of the LP safety valve. See Figure II-77. The condensate leaving the flash recovery vessel is at low pressure. Usually it is handled by a float-thermostatic steam trap and is delivered to the receiver of a condensate pump for return to the boiler house. Any residual flash steam from the low pressure condensate is vented from the pump receiver. (Figure II-78.) In some cases, pressures are sufficiently high that the flash can be taken off at an intermediate pressure and the condensate leaving the flash vessel still contains a useful amount of sensible heat. It can then be taken to a second flash vessel working at low pressure, so that the maximum heat recovery is effected. The use of two flash vessels in series, or “cascade”, means that these vessels may be installed generally as Figure II-76 and II-77. Alternatively, it may be desirable to use the recovered flash steam at a low pressure, below that in the condensate return line or perhaps the de-aerator tank. The arrangement adapted may then be either as Figure II-78 or as Figure II-79. This latter system uses a steam powered pump, with the bottom of the flash recovery vessel serving as the pump receiver. Power steam used by the pump is vented to the LP steam line, so that pumping is achieved at virtually zero cost and the use of unsightly or wasteful vents is avoided. H. P. Steam Supply Float & Thermostatic Steam Trap H. P. Condensate Strainer Spira-tec Loss Detector Moisture Separator Strainer H. P. Condensate Figure II-77 Flash Steam Recovery with Live Steam Make up and Back Pressure Surplussing Valves Drip Pan Elbow Drain to Safe Place Pilot Operated Pressure Control Valve Drain to Safe Place Safety Valve Flash Recovery Vessel Thermostatic Air Vent Safety Valve Flash Recovery Vessel Thermostatic Air Vent L. P. Steam Main Figure II-76 Typical Flash Steam Recovery Hook-up Spira-tec Loss Detector L. P. Strainer Float & Condensate Thermostatic Steam Trap Drip Pan Elbow Strainer Strainer L. P. Steam Spira-tec Loss Detector H. P. Condensate Float & Thermostatic Steam Trap Check Valve Vent Pilot Operated Back Pressure Control Valve L. P. Condensate
Figure II-78 Flash Steam Recovery at Pressure above Atmospheric with L.P. Condensate Returned by Packaged Pressure Powered Pump Unit Drip Pan Elbow Safety Valve H. P. Condensate Flash Recovery Vessel Strainer Pilot Operated Back Pressure Control Valve Strainer Steam Trap Station Spira-tec Loss Detector Float & Thermostatic Steam Trap Check Valve Packaged Pressure Powered Pump Vent Pilot Operated Pressure Control Valve Vent to Atmosphere Pressure Powered Pump Figure II-78A Condensate Recovery Module A preassembled modular pumping system provides a sole source solution for condensate recovery applications. Strainer L.P. Condensate Inlet Strainer Strainer Thermo- Dynamic Steam Trap Moisture Separator See Fig. II-78A for the preassembled Condensate Recovery Module Condensate Return High Pressure Makeup Supply Low Pressure Steam System Steam Trap Station Spira-tec Loss Detector Strainer Float & Thermostatic Steam Trap HOOK-UP DIAGRAMS 121
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DESIGN OF FLUID SYSTEMS HOOK-UPS
Page 3 and 4:
Spirax Sarco Spirax Sarco is the re
Page 5:
Section 1: System Design Informatio
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SYSTEM DESIGN 2 The Working Pressur
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SYSTEM DESIGN 4 Sizing Steam Lines
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SYSTEM DESIGN 6 Sizing Superheated
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SYSTEM DESIGN 8 Draining Steam Main
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SYSTEM DESIGN 10 Draining Steam Mai
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SYSTEM DESIGN 12 Steam Tracing The
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SYSTEM DESIGN 14 Steam Tracing Sizi
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SYSTEM DESIGN 16 Steam Tracing Trac
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SYSTEM DESIGN 18 Steam Tracing A si
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SYSTEM DESIGN 20 Pressure Reducing
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SYSTEM DESIGN 22 Parallel and Serie
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SYSTEM DESIGN 24 How to Size Temper
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SYSTEM DESIGN 26 Temperature Contro
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Page 36 and 37:
Page 38 and 39:
SYSTEM DESIGN 32 Makeup Air Heating
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SYSTEM DESIGN 34 Draining Temperatu
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SYSTEM DESIGN 36 Draining Temperatu
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SYSTEM DESIGN 38 Steam Trap Selecti
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SYSTEM DESIGN 40 Steam Trap Selecti
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SYSTEM DESIGN 42 Flash Steam Flash
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SYSTEM DESIGN 44 Flash Steam Flash
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SYSTEM DESIGN 46 Condensate Recover
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SYSTEM DESIGN 48 Condensate Pumping
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SYSTEM DESIGN 50 Clean Steam Printi
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SYSTEM DESIGN 52 Clean Steam Overal
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SYSTEM DESIGN 54 Clean Steam Figure
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SYSTEM DESIGN 56 Testing Steam Trap
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SYSTEM DESIGN 58 Spira-tec Trap Lea
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SYSTEM DESIGN 60 Steam Meters Densi
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SYSTEM DESIGN 62 Compressed Air Sys
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SYSTEM DESIGN 64 Compressed Air Sys
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SYSTEM DESIGN 66 Compressed Air Lin
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SYSTEM DESIGN 68 Typical Steam Cons
Page 76 and 77: SYSTEM DESIGN 70 Specific Heats and
Page 78 and 79: SYSTEM DESIGN 72 Specific Heats and
Page 80 and 81: SYSTEM DESIGN 74 Conversions To Con
Page 82 and 83: SYSTEM DESIGN 76 Flow of Water thro
Page 84 and 85: SYSTEM DESIGN 78 Moisture Content o
Page 86 and 87: SYSTEM DESIGN 80 ANSI Flange Standa
Page 89 and 90: HOOK-UP APPLICATION DIAGRAMS Sectio
Page 91 and 92: Figure II-3 Draining and Air Ventin
Page 93 and 94: Figure II-8 Draining Steam Main whe
Page 95 and 96: Figure II-12 Typical Pressure Reduc
Page 97 and 98: Figure II-16 Installation of Pressu
Page 99 and 100: Figure II-20 Typical Pneumatic Sing
Page 101 and 102: Condensate Return Steam Supply Stea
Page 103 and 104: Steam Supply Steam Supply Figure II
Page 105 and 106: Figure II-31 Temperature Control of
Page 107 and 108: Elevated or Pressurized Return P 2
Page 109 and 110: Figure II-39 Controlling Temperatur
Page 115 and 116: Figure II-50 Trapping Small Utensil
Page 117 and 118: Figure II-55 Draining and Air Venti
Page 119 and 120: Figure II-59 Air Venting and Conden
Page 121 and 122: Evaporator Pressure Figure II-64 Dr
Page 123 and 124: Figure II-68 Installation of Pump/T
Page 125: Figure II-73 Draining Small Condens
Page 129 and 130: Figure II-80 Heating Water using Re
Page 131 and 132: Figure II-82 Recovery of Flash Stea
Page 133 and 134: Figure II-84 Flash Steam Condensing
Page 135 and 136: Figure II-87 Tank Sterilization Cle
Page 137 and 138: Steam Supply Figure II-93 Typical S
Page 139 and 140: Figure II-97 Hand Operated Rotary F
Page 141 and 142: Figure II-102 Freeze Proof Safety S
Page 143 and 144: Figure II-106 Continuous Boiler Blo
Page 145 and 146: Figure II-111 Controlling Temperatu
Page 147 and 148: 141
Page 149 and 150: PRODUCT INFORMATION Section 3
Page 151 and 152: Steam Traps • Balanced Pressure T
Page 153 and 154: 147
Page 155 and 156: Subject Index Safety...............
Page 157 and 158: Subject Index Radiation—Baseboard
Page 159 and 160: Argentina Spirax Sarco S.A. Ruta Pa
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2000 Hook-up Book - Spirax Sarco

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