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Article | REF: B9190 V1

Domestic hot water

Author: Patrice BRAUD

Publication date: November 10, 1996 | Lire en français

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    1. Basics of sizing. Definition of requirements

    1.1 General

    • The needs of a DHW system depend on three parameters [1] : temperature of use, instantaneous flow rate, available volume. These values can vary according to habits, and even social context.

      • The temperature of the water used generally varies between 33 and 40°C (baths, showers) and 55°C (washing without detergent), with a statutory limit of 60°C, with the exception of kitchens or laundry rooms in public buildings, where DHW may be distributed at 90°C at certain points, subject to special signage

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