ISO 13675-2:2013 pdf download.Heating systems in buildings -Method and design for calculation of the system energy performance- Combustion systems (boilers).
ISO 13675-2 is the general standard on generation by combustion sub-systems (boilers)
for oil, gas, coal and biomass burning.
It specifies the
— required inputs,
— calculation method, and
— resulting outputs
for space heating generation by combustion sub-systems (boilers) including control.
This International Standard is also intended for the case of generation for both domestic hot water
production and space heating.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 7345:1987, Thermal insulation — Physical quantities and definitions
ISO 13790, Energy performance of buildings — Calculation of energy use for space heating and cooling
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 7 345:1987 and the following apply.
3.1.1
auxiliary energy
electrical energy used by technical building systems for heating, cooling, ventilation and/or domestic water to support energy transformation to satisfy energy needs
Note 1 to entry: This includes energy for fans, pumps, electronics, etc. Electrical energy input to the ventilation system for air transport and heat recovery is not considered as auxiliary energy, but as energy use for ventilation.
3.1.2
boiler
gas, liquid or solid fuelled appliance designed to provide hot water for space heating
Note 1 to entry: It can also be designed to provide domestic hot water heating.
3.1.3
biomass boiler
biomass fuelled appliance designed to provide heating medium (e.g. water, fluid)
3.1.4
condensing boiler
oil or gas boiler designed to make use of the latent heat released by condensation of water vapour in the combustion flue products
Note 1 to entry: A condensing boiler allows the condensate to leave the heat exchanger in liquid form by way of a condensate drain.
Note 2 to entry: Boilers not so designed, or without the means to remove the condensate in liquid form, are called ‘non-condensing’.
3.1.5
low temperature boiler
non-condensing boiler which can work continuously with a water supply temperature of 35 °C to 40 °C
3.1.6
modulating boiler
boiler with the capability to vary continuously (from a set minimum to a set maximum) the fuel burning rate whilst maintaining continuous burner firing
3.1.7
multistage boiler
boiler with the capability to vary the fuel burning rate stepwise whilst maintaining continuous burner firing
3.1.8
on/off boiler
boiler without the capability to vary the fuel burning rate whilst maintaining continuous burner firing
Note 1 to entry: This includes boilers with alternative burning rates set once only at the time of installation, referred to as range rating.
3.1.9
calculation period
period of time over which the calculation is performed
Note ito entry: The calculation period can be divided into a number of calculation steps.
3.1.10
calculation step
discrete time interval for the calculation of the energy needs and uses for heating, cooling, humidification and dehumidification
Note 1 to entry: Typical discrete time intervals are one hour, one month or one heating and/or cooling season, operating modes, and bins.ISO 13675-2 pdf download.