Link
https://www.en-standard.eu/din-1988-300-codes-of-practice-for-drinking-water-installations-part-300-pipe-sizing-dvgw-code-of-practice/cibse.org/knowledge/knowledge-items/detail?id=a0q3Y00000IMrmGQAT
Application
Domestic Hot Water
This standard calculates the diversity based on
- Number of tapping points
- Type of the tappping points
- Design flows of the tapping points
- Number of dwellings
- tapping points
- Total DHW flow
- Diversified DHW flow
- Number of dwellings
| Note |
|---|
Since the standard does not provide
it is not possible to define tapping points using this standard, |
Diversity formula
With this calculation method, the diversity factor decreases according to the formula (a * (T)^b - c) / T, in which T is (2qm + Θ(Σqf-2qm) + Asqrt(qm*Θ)sqrt(Σqf-2qm))/Σqf, in which Σqf = T = the sum of the design flows (for hot water) of all individual taps.
For apartments : a = 1.48, b=0.19, c=0.94
For hospitals : a = 0.75, b=0.44, c=0.18
For hotels : a = 0.70, b=0.48, c=0.13
diversified HIU flows.
This formula only applies when 0.2 <= T and T <= 500. It is important to note that calculation is applicable for T expressed in liter per seconds. We assume A=3.1; Θ = 0.015; qm=0.1
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Applies diversity
- inside the dwelling
- outside the dwelling
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