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Abstract
A group of five boilers, 30 liter electrical water heaters were operated against a group pf five boilers connected to five "P.T.H" Water Improver units. All boilers were operated simultaneously under the same conditions.
Program of boilers operation
Operation of the whole system was conducted and controlled automatically by a programmer. At a water temperature in the boiler of 60°C, emptying and filling taps are opened for 4 minutes, during which the heating stops and the boilers cool.
Water flow to boilers was set up to 10L\min.
*Heating elements (1500w, 10.6 w\cm).
Total hardness: 140 mg/l.
Results
Table 1 summarizes the results of the system operation during 650 hours. |
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"P.T.H"
Treated boilers |
Controls |
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Water consumption (liters) |
52,625 |
54,933 |
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Electricity consumption (kw) |
908.5 |
1022.64 |
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Kw\m³ Water |
17.26 |
18.62 |
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Scale weight (gram) |
19.5 - 80.8 |
184.4 - 353.5 |
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Efficiency range (%) |
72 - 92 |
Electricity Range (%) = (M2-M1)/ M2 x 100
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M1= Scale and precipitate dry weight of the P.T.H treated boiler. |
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M2= Scale and precipitate dry weight of the control boiler. |
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P.T.H" Water Improver reduces scale formation in boilers with an efficiency range of 72% - 92% and electricity saving of 5% - 20%. | |
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