Guidelines
| Chiller Sizing |
|---|
| 2.4 gpm/Ton flow rate 1 Chiller Ton = (gpm x dT)/24 12,000 btu/hr = 1 chiller ton |
| Tower Sizing |
|---|
| 3 gpm/Ton flow rate (based on 85 F supply, 95 F return, 78 F WB) 1 Tower Ton = (gpm x dT) / 30 15,000 btu/hr = 1 tower ton Ft. head=psi x 2.31 |
| Chiller Sizing for Molding |
|---|
| 30 lb/hr HDPE = 1 Ton 35 lb/hr LDPE, PP, or Acrylic = 1 Ton 50 lb/hr PS, ABS, Acetal, PC = 1 Ton 75 lb/hr PVC = 1 Ton 40 lb/hr PET, Nylon, PPO, Urethane = 1 Ton |
| Chiller Sizing for Profile Extrusion |
|---|
| 80 lb/hr PVC or ABS = 1 Ton 75 lb/hr PS = 1 Ton 50 lb/hr HDPE or PP = 1 Ton |
| Chiller Sizing for Blow Molding |
|---|
| 40 lb/hr Polyolefins = 1 Ton |
| Extruder Cooling |
|---|
| Extruder Barrel Cooling = 1 ton/inch diameter Extruder Feed Throat (3.5″ = 1 Ton, 4.5″ to 6″ = 2 Tons) Extruder Gearbox = 1 ton per 100 hp |
| Misc Cooling |
|---|
| Hydraulic pump = 0.1 Ton/hp Air Compressor = 0.1 Ton/hp Air Compressor w/aftercooler = 0.2 Ton/hp Machine Tools = 0.1 Ton/hp |
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| Water Pipe Sizing | |
|---|---|
| (Based on 10′ HD loss/ 100′ pipe) | |
| 6 gpm | 1/2″ pipe |
| 10 gpm | 3/4″ pipe |
| 15 gpm | 1″ pipe |
| 40 gpm | 1-1/2″ pipe |
| 70 gpm | 2″ pipe |
| 100 gpm | 2-1/2″ pipe |
| 150 gpm | 3″ pipe |
| 275 gpm | 4″ pipe |
| 850 gpm | 6″ pipe |
| 1500 gpm | 8″ pipe |