Energy Savings Using StreaMax™-coated Tubes
Table 2: Friction Drop Data for Coated, Clean New Pipe and Lightly Rusted Pipe
Theoretical friction pressure drop 8,500m3/day water flow, 9,000m length, 68ºC, density = 975.6kg/m3 viscosity = 4.198e-4 Pa-s StreaMax™
Clean New Pipe
Roughness, inches
diameter, inches
Pressure 76 49 drop, bar
√f
1=+ – 4 log10
0.27ε
D
7 0.9 Re
Table 3: Savings Using a StreaMax-coated Pipe Instead of a Lightly Rusted Pipe
Tube Diameter
(inches)
StreaMax 0.001 (kW)
6.184 7,700 6.765 4,900
Lightly Rusted (kW)
15,500 9,600
The saving for a 6.184-inch tube is 7.800kW, but if we assume the pump has an efficiency of 50%, the actual saving is 15.600kW.
In Denmark, producing 1,000kWh generates 494kg CO2. This means the environment is saved the amount of CO2 mentioned in Table 2.
In Denmark, for industrial purposes 1kWh costs about 1 Danish krone (DKK). This means that the coated 6.184-inch pipe saves the
80 51 100 63
Calculated using the Churchill equation for Fanning friction factor in terms of roughness E, inside diameter D, and Reynolds number Re.
110 70 161 100 Perfectly smooth Inside 6.184 6.785 0.0001 6.184 6.765 6.184 0.001 6.765 0,0018 6.84 6.765
Lightly Rusted Pipe
0.01
6.184 6.765
Savings (kW)
7,800 4,700
Pump Savings
50% Effective (kW)
15,600 9,400
CO2 (kg)
Savings
7,706 4,644
user DKK15.600 per hour or DKK 374.400 per day for moving the water 8.500m3/day over a length of 9,000m. The environment is for 7.706kg each hour or 24 x 7706 = 184.944kg a day.
Accoat’s Use of Energy to Coat the StreaMax Tubes
The process for coating the tubes is outlined in Table 4. The coating parameters are controlled using temperature loggers, meters on the natural gas supply, etc. Normally, several tubes, often of different
Advanced Corrosion Protection
Fluoropolymer coatings offer long term corrosion protection and flow enhancement.
ACCOAT is the leading European applicator for fluoropolymers coatings.
ACCOAT is a partner in marketing DuPontTM StreaMaxTM
flow solutions for Downhole Production Tubing.
ACCOAT is first choice of internal coating in Downhole Production Tubing in the North Sea Region.
Capabilities:
Munkegaardsvej 16 DK-3490 Kvistgaard
Tel. +45 4912 6800 Fax +45 4912 6899
E-mail:
info@accoat.com Website: www.accoat.com
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