At the left – WS-132 water conditioner. At the right – heating heat-exchangers (under insulation).
Installer: ”Gidroflou” (Russia, Zvenigorod city). Customer: boiler house, Moscow, JSC “Russian Railways”. Object: Two heat-exchangers for gates heating, shell-tube, non-separable. Two hot water heat-exchangers, plate type, separable. Installed units: WS-132 x 1 pcs., WS-62 x 1 pcs. Water Source: Municipal. Chemicals: No. Timeline: gates heating (WS-132) — from 26.01.16 to 25.03.16 (2 months); hot water (WS-62) — from 26.01.16 to 30.06.16 (5 months). Background: lime-scale formation in heat-exchangers reduces the temperature of the heated water. The heat-exchangers of the heating gates circuit are non-separable. It is difficult to descale them mechanically. Goal: Eliminate an existing lime-scale. Result: After two months of operation, temperature at the gates heating heat-exchangers output changed from 38-40C to 57-64C (from 100-104F to 135-147F). Deposits amount on the plates of the hot water heat-exchanger significantly decreased in compare with the previous year.
Text of the case study (translation from Russian):
Trial operation of water conditioners was conducted on behalf and under the supervision of the Technical Department of the Central heat and water-supply directorate of JSC “Russian Railways”.
01.07.16
Testimonial
About the work of WS water conditioners
Testimonial
January 26, 2016 WS-132 (DN125) water conditioner was installed to the hangar-garage gates heating circuit of Moscow -… station, … depot. A second device, WS-62 (DN50) was installed on the pipeline with the cold water before the hot water plate type heat-exchanger.
After two months of operation, temperature at the gates heating heat-exchangers output changed from 38-40˚C to 57-64˚C (from 100-104F to 135-147F). At this time the ambient temperature was -5..-8˚C (23-17F).
June 30, 2016 during the scheduled works the hot water plate type heat-exchangers were opened. Discovered, the amount of deposits on the plates was considerably reduced in compare with the previous year.
Conclusion: these water conditioners can restrain the growth of lime-scale in the closed type (non-separable) heat-exchangers, and in plate type heat-exchangers as well. This increases the lifetime of the heat-exchangers and reduces energy consumption.
boiler room superintendent (name, signature)
Prepared a report according to the results of WS water conditioners trial operation. See the fragments of the report below.
Application description
Boiler room is built according to the classic double-circuit scheme. The boiler circuit is closed. Chemically purified water is used for boiler circuit makeup. Load boiler circuit is different heat-exchangers, which heat the water for the heating system, for the heating system of the gates, and for hot water system.
The formation of lime-scale and deposits observed in the outer contours of the heat-exchangers – on the heating surfaces of the gates heating system heat-exchangers, hot water system heat-exchangers.
Heat-exchangers of the gates heating system are shell-tube, non-separable. For hot water system plate type heat-exchangers are used.
Effectiveness evaluation methods.
Due to the gates heating heat-exchanger is non-separable it is not easy to check visually the lime-scale and deposits volume in the pipes of the heat-exchanger.
This circuit does not have flow meter, and circulating pump has excess capacity, so there is no way to estimate the volume of sediments by change of the flow or by change of the pump load.
There are temperature sensors, pressure sensors, and in the supply and “reverse” pipes (before and after) of the heat-exchangers. The readings of these sensors, as well as the temperature of the ambient air, are recorded in the log book every 2 hours.
Taking into account available data, we assume that the company operates around the clock, rhythmically, clearly on schedule. Therefore, the load on the heating circuit of the gate of the hangar-garage also has some steady rhythm.
Let’s plot charts of the dependence of the temperature at the outlet of the heat-exchangers, at the same time, and at the same ambient air temperature. Due to the large number of charts (more than 50, i.e. 12 by time and 4-5 by temperature), the graphs will be merged by time. The obtained charts are presented in section 6.
Examples of the charts:
According to these charts, the temperature at the outlet of the gates heating heat-exchangers increases (at the same time and with the same ambient air temperature), which indicates a gradual descaling of heat-exchangers.
Hot water heat-exchangers circuit.
June 30, 2016 during the scheduled works the hot water plate type heat-exchangers were opened. Discovered, the amount of deposits on the plates was considerably reduced in compare with the previous year.
Testimonial: gates heating heat-exchangers descaling (Russian Railways).
Gates heating heat-exchangers
At the left – WS-132 water conditioner. At the right – heating heat-exchangers (under insulation).
Installer: ”Gidroflou” (Russia, Zvenigorod city).
Customer: boiler house, Moscow, JSC “Russian Railways”.
Object: Two heat-exchangers for gates heating, shell-tube, non-separable. Two hot water heat-exchangers, plate type, separable.
Installed units: WS-132 x 1 pcs., WS-62 x 1 pcs.
Water Source: Municipal.
Chemicals: No.
Timeline: gates heating (WS-132) — from 26.01.16 to 25.03.16 (2 months); hot water (WS-62) — from 26.01.16 to 30.06.16 (5 months).
Background: lime-scale formation in heat-exchangers reduces the temperature of the heated water. The heat-exchangers of the heating gates circuit are non-separable. It is difficult to descale them mechanically.
Goal: Eliminate an existing lime-scale.
Result: After two months of operation, temperature at the gates heating heat-exchangers output changed from 38-40C to 57-64C (from 100-104F to 135-147F). Deposits amount on the plates of the hot water heat-exchanger significantly decreased in compare with the previous year.
Text of the case study (translation from Russian):
Trial operation of water conditioners was conducted on behalf and under the supervision of the Technical Department of the Central heat and water-supply directorate of JSC “Russian Railways”.
01.07.16
Testimonial
About the work of WS water conditioners
Testimonial
January 26, 2016 WS-132 (DN125) water conditioner was installed to the hangar-garage gates heating circuit of Moscow -… station, … depot. A second device, WS-62 (DN50) was installed on the pipeline with the cold water before the hot water plate type heat-exchanger.
After two months of operation, temperature at the gates heating heat-exchangers output changed from 38-40˚C to 57-64˚C (from 100-104F to 135-147F). At this time the ambient temperature was -5..-8˚C (23-17F).
June 30, 2016 during the scheduled works the hot water plate type heat-exchangers were opened. Discovered, the amount of deposits on the plates was considerably reduced in compare with the previous year.
Conclusion: these water conditioners can restrain the growth of lime-scale in the closed type (non-separable) heat-exchangers, and in plate type heat-exchangers as well. This increases the lifetime of the heat-exchangers and reduces energy consumption.
boiler room superintendent (name, signature)
Prepared a report according to the results of WS water conditioners trial operation. See the fragments of the report below.
Application description
Boiler room is built according to the classic double-circuit scheme. The boiler circuit is closed. Chemically purified water is used for boiler circuit makeup. Load boiler circuit is different heat-exchangers, which heat the water for the heating system, for the heating system of the gates, and for hot water system.
The formation of lime-scale and deposits observed in the outer contours of the heat-exchangers – on the heating surfaces of the gates heating system heat-exchangers, hot water system heat-exchangers.
Heat-exchangers of the gates heating system are shell-tube, non-separable. For hot water system plate type heat-exchangers are used.
Effectiveness evaluation methods.
Due to the gates heating heat-exchanger is non-separable it is not easy to check visually the lime-scale and deposits volume in the pipes of the heat-exchanger.
This circuit does not have flow meter, and circulating pump has excess capacity, so there is no way to estimate the volume of sediments by change of the flow or by change of the pump load.
There are temperature sensors, pressure sensors, and in the supply and “reverse” pipes (before and after) of the heat-exchangers. The readings of these sensors, as well as the temperature of the ambient air, are recorded in the log book every 2 hours.
Taking into account available data, we assume that the company operates around the clock, rhythmically, clearly on schedule. Therefore, the load on the heating circuit of the gate of the hangar-garage also has some steady rhythm.
Let’s plot charts of the dependence of the temperature at the outlet of the heat-exchangers, at the same time, and at the same ambient air temperature. Due to the large number of charts (more than 50, i.e. 12 by time and 4-5 by temperature), the graphs will be merged by time. The obtained charts are presented in section 6.
Examples of the charts:


According to these charts, the temperature at the outlet of the gates heating heat-exchangers increases (at the same time and with the same ambient air temperature), which indicates a gradual descaling of heat-exchangers.
Hot water heat-exchangers circuit.
June 30, 2016 during the scheduled works the hot water plate type heat-exchangers were opened. Discovered, the amount of deposits on the plates was considerably reduced in compare with the previous year.
Hot water heat-exchangers
Hot water heat-exchangers
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