AQ. Ammonia Preheater
Shell & Tube Heat Exchanger Versus Ecoflux * Corrugated Tube Heat Exchangers
| Process Parameters | Units | Shell Side | Tube Side |
| AQ. AMMONIA PREHEATER |
| Fluid | -- | Boiler Feed Water | Aqueous Ammonia |
| Flow Rate | kg / hr | 25607 | 26187 |
| Temperature In / Out | °C | 128.2 / 85.5 | 38 / 80 |
| Heat Load | kcal / hr | 1,098,000 | 1,098,000 |
| Allowable Pressure Drop | kg / cm2 | 0.7 | 0.7 |
| Fouling Factor | hr.m2.oC/kcal | 0.0002 | 0.0003 |
| Inlet Pressure | kg / cm2 | 2.6 | 3.03 |
| Design Pressure | kg / cm2 | 5 5 |
| Design Temperature | oC | 160 | 110 |
| Test Pressure | kg / cm2 | 7.5 | 7.5 |
| Material Of Construction | -- | SS 304 L | SS 304 L |
| Details Of Heat Exchanger | Shell & Tube | Cthe |
| No Of Tubes | nos. | 120 | 79 |
| Tube O.D. | mm | 19.05 | 18 |
| Tube Thickness | mm | 1.65 | 0.70 |
| Tube Length | mm | 6000 | 6000 |
| Heat Transfer Area | m2 | 43 | 26.8 |
| Shell I.D. | mm | 387 | 267 |
| No Of Passes | nos. | 4 | 1 |
| Fluid Velocity In Shell | m / s | 0.35 | 0.21 |
| Fluid Velocity In Tube | m /s | 1.27 | 0.44 |
| Baffles | nos. | Provided | Not Required |
| Actual Pressure Drop |
| Shell Side | kg / cm2 | 0.20 | 0.006 |
| Tube Side | kg / cm2 | 0.40 | 0.03 |
| Heat Trf. Coefficient |
| Design | kcal / hr.m2.oC | 637 | 855 |
| Clean | kcal / hr.m2.oC | 2020 | 1791 |
| Area Reduction | % | -- | 37.6 |
*Submitted for Registration
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