| 摘要 |
Apparatus to supply warmed water for human washing and adapted to provide protection both against undesirably high levels of pathogenic organisms of the species Legionella in said water and against risk of scalding by said water. The apparatus comprising an enclosed water mains pressurised first flow path for cold water (21), a first storage water heater, to heat the cold water and maintain it at a first high temperature effective in destroying said organisms, consisting of storage heaters (23, 24), accumulator heater (28), hot water circulation loop (27), and temperature control means (52, 80, 82, 88, 90) adapted to maintain said high temperature, a second flow path (34) intercommunicating between said first storage water heater and a second storage water heater, indirect heat exchange means (18) between said first (21) and second flow paths (34), said second storage water heater consisting of delivery heater (39), warm water circulation loop (40), heating means adapted to heat the water in said second storage water heater to a second, lower temperature, and temperature control means (54, 92, 93, 97) adapted to maintain said lower temperature at a precise pre-determined value required for washing at an outlet (44, 46) provided and supplied from said warm water circulation loop (40). |
