Christ’s College, Cambridge installed Pipetector PT-75DS on its main central heating return pipe at the Todd building on July 31, 2013, to eliminate the issues regarding corrosion and single cell bacteria as well as maintain the integrity of the entire pipework.
The Fe-ion content in the heating water was 43.81mg/L before the installation. But the level was reduced to 17.95mg/L after three weeks. Reduction of the Fe-ion content proceeded slow, as the heating system was not operating in August when Pipetector was installed. After the system resumed its full operation in October, the Fe-ion content kept decreasing until it dropped to 0.5195 mg/L in 33 weeks.
Summary
| Name | Christ’s College, Cambridge |
|---|---|
| Location | St Andrew’s St, Cambridge CB2 3BU, UK |
| Installation date | July 31, 2013 |
Changes in Fe content in water
| Before Installation | After 3 weeks 20 Aug. 2013 | After 8 weeks 27 Sep. 2013 | After 10 weeks 8 Oct. 2013 | After 11 weeks 14 Oct. 2013 | After 13 weeks 31 Oct. 2013 | |
| Fe content (mg/l) | 43.81 | 17.95 | 4.22 | 11.5 | 4.1 | 6.811 |
|---|---|---|---|---|---|---|
| After 15 weeks 11 Nov. 2013 | After 18 weeks 4 Dec. 2013 | After 25 weeks 23 Jan. 2014 | After 33 weeks 5 Aug. 2014 | – | – | |
| 8.588 | 3.215 | 3.943 | 0.5195 | – | – |