Based on the Cibse CP1 2015 / Danish Code of Practice DS 439

Owned by Kristof Smits
Last updated: Apr 15, 2022
1 min read

Link

https://www.cibse.org/knowledge/knowledge-items/detail?id=a0q200000090MYHAA2

Application

Domestic Hot Water

This standard calculates the diversity based on

Number of tapping points
Type of the tapping points
Total DHW flow
Diversified DHW flow
Number of dwellings

Diversity formula

With this calculation method, the diversity factor decreases according to the formula (1.19 * N + 18.8 * N^0.5 + 17.6) / (37.5*N), in which N is the number of dwellings.

The diversified flow rate for one dwelling is calculated based on the default power 37,5 kW as mentioned in the DS 439 (CIBSE CP1 2015).

Applies diversity

inside the dwelling
outside the dwelling

Requires recalculation of DHW flows?

No.

 

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