BS ISO 52031:2020 pdf free.Energy performance of buildings一Method for calculation of system energy requirements and system efficiencies一Space emission systems (heating and cooling)
BS ISO 52031 This document establishes the required inputs, outputs and links (structure) of the calculation method for heating and cooling space emission systems.This document is applicable to the energy performance calculation of heating systems and water-based cooling space emission sub-systems.The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 7345, Thermal performance of buildings and building components一Physical quantities and definitions ISO 52000-1, Energy performance of buildings- Overarching EPB assessment Part 1: General framework and procedures 3.1 heat loss emissions within the heating system as losses through the building envelope due to non-uniform temperature distribution, control (3.3) inefficiencies and losses of emitters embedded in the building structure 3.2 cooling loss emissions within the cooling system as losses through the building envelope due to non-uniform temperature distribution, control (3.3) inefficiencies and losses of emitters embedded in the building structure 3.3  control
self-acting devices with and without auxiliary energy to keep a physical condition such as temperature,humidity, etc. close to set-point A heating/cooling system may, as required, be split up in zones with different heating/cooling emission systems, and the heating/cooling loss calculations can be applied individually for each zone. The considerations given in ISO 52000-1 regarding splitting up or branching of the heating/cooling system shall be followed. If the principle of adding up the heating/cooling losses is respected, it is always possible to combine zones with different heating/cooling emission systems.Especially in large buildings, decentralized heating systems are sometimes used, which combine the subsystems of heat generation and heat transfer in a single unit and which are installed in the room to be heated (e.g. gas infrared radiators). BS ISO 52031 pdf download.