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Thorne, P.F., Theobald, C.R. and Mahendran, P., 1975. DRAG REDUCTION IN FIRE HOSE TRIALS AT FIRE SERVICE TECHNICAL COLLEGE 1974 PART I EXPERIMENTS AND RESULTS. Fire Research Notes 1033
This note describes trials of a commercially-available system for injecting drag reducing additives into fire-fighting water and presents measurements of the friction factors of a range of UK fire hose made using the system. Reductions were found in friction factor of 70 per cent for 3/4 inch hose reel hose, 50 per cent for 1 3/4 inch and 2 3/4 inch hose and of 20 per cent for 3 1/2 inch hose.
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