Transcription of CAPACITY CALCULATIONS FOR STEAM LOADS
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CAPACITY CALCULATIONS FOR STEAM LOADS
189 EngineeringSTEAM TRAP SIZING AND SELECTIONDrip Trap on STEAM Mains:Should be sized for 2X safety factor at full differential pressurePrimary choice for trap: 1/2 WD600L Thermodynamic3/4 WD600L ThermodynamicPlace trap every 200 ft. depending on type size, pressure,and piping Tracing:Typically a trap is placed approximately every 100 choice for trap: 1/2 WT2000 Thermostatic1/2 WT1000 ThermostaticBucket traps and thermodynamic traps are used on critical tracing applications where no condensate can Applications:2X safety factor based on differential pressureWhen used to drain a heat exchanger being supplied by a modulating control valve using less than 30 PSIG STEAM pressure, trap must handle full load at 1/2 PSI differential used to drain a heat exchanger being supplied by a modulating control valve using with STEAM pressuregreater than 30 PSIG use safety factor at fulI differential choice for trap: Float & ThermostaticCAPACITY CALCULATIONS FOR STEAM LOADSWhen BTU load is KnownCapacity of =BTUsteam required1000(lbs/hr)When Square Feet Equivalent CAPACITY of Direct Radiation (EDR) is Knownsteam required =Sq ft.
189 Engineering STEAM TRAP SIZING AND SELECTION Drip Trap on Steam Mains: Should be sized for 2X safety factor at full differential pressure Primary choice for trap: 1/2” WD600L Thermodynamic
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