ISO 11855-4:2021

Building environment design — Embedded radiant heating and cooling systems — Part 4: Dimensioning and calculation of the dynamic heating and cooling capacity of Thermo Active Building Systems (TABS)

Publication date: 5 gush 2021

General information

Current stage: 90.20 Effective date: 15 korr 2026

Originator: ISO

Owner: ISO/TC 205

Type: International Standard

ICS: 91.040.01

Gjuha: anglisht frëngjisht

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Statusi: Publikuar

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Scope

This document allows the calculation of peak cooling capacity of Thermo Active Building Systems (TABS) – Type V according to ISO 11855-1, based on heat gains, such as solar gains, internal heat gains, and ventilation, and the calculation of the cooling power demand on the water side, to be used to size the cooling system, as regards, e.g. the chiller size, fluid flow rate.
This document defines a detailed method aimed at the calculation of heating and cooling capacity in non-steady state conditions.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 11855-4:2012

NOW

PUBLISHED
ISO 11855-4:2021
90.20 Standard under periodical review
15 korr 2026

CORRIGENDA / AMENDMENTS

PUBLISHED
ISO 11855-4:2021/Amd 1:2023

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