BS EN ISO 13370:2007 - Thermal performance of buildings. Heat transfer via the ground. Calculation methods – BSI British Standards

BS EN ISO 13370:2007

Thermal performance of buildings. Heat transfer via the ground. Calculation methods

Status : Superseded, Withdrawn   Published : December 2008 Replaced By : BS EN ISO 13370:2017

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BS EN ISO 13370:2007 Thermal performance of buildings. Heat transfer via the ground. Calculation methods

BS EN ISO 13370 provides methods of calculation of heat transfer coefficients and heat flow rates for building elements in thermal contact with the ground, including slab-on-ground floors, suspended floors and basements.

It applies to building elements, or parts of them, below a horizontal plane in the bounding walls of the building situated:

• For slab-on-ground floors, suspended floors and unheated basements, at the level of the inside floor surface
• For heated basements, at the level of the external ground surface.

BS EN ISO 13370 includes calculation of the steady-state part of the heat transfer (the annual average rate of heat flow) and the part due to annual periodic variations in temperature (the seasonal variations of the heat flow rate about the annual average). These seasonal variations are obtained on a monthly basis and, in general, BS EN ISO 13370 does not apply to shorter periods of time.

Contents of BS EN ISO 13370:

  • Foreword
  • Introduction
  • Scope
  • Normative references
  • Terms, definitions, symbols and units
  • Terms and definitions
  • Symbols and units
  • Methods of calculation
  • Thermal properties
  • Thermal properties of the ground
  • Thermal properties of building materials
  • Surface resistances
  • Internal temperature and climatic data
  • Internal temperature
  • Climatic data
  • Thermal transmittance and heat flow rate
  • Thermal transmittance
  • Thermal bridges at edge of floor
  • Calculation of heat flow rate
  • Effect of ground water
  • Special cases
  • Parameters used in the calculations
  • Characteristic dimension of floor
  • Equivalent thickness
  • Calculation of thermal transmittances
  • Slab-on-ground floor
  • Suspended floor
  • Heated basement
  • Unheated basement
  • Partly heated basement



Standard NumberBS EN ISO 13370:2007
TitleThermal performance of buildings. Heat transfer via the ground. Calculation methods
StatusSuperseded, Withdrawn
Publication Date31 December 2008
Withdrawn Date16 August 2017
Normative References(Required to achieve compliance to this standard)ISO 10456, ISO 7345, ISO 6946:2017, ISO 10211:2017, ISO 14683:2017
Informative References(Provided for Information)ISO 13789:2017
Replaced ByBS EN ISO 13370:2017
ReplacesBS EN ISO 13370:1998
Amended ByCorrigendum, February 2009
DescriptorsThermal resistance, Soils, Suspended floors, Ground water, Heat transfer, Dimensions, Thermal properties of materials, Underfloor heating, Thermal conductivity, Basements, Slab floors, Thermal bridges, Equations, Floors, Climate, Ventilation, Thermal design of buildings, Thermal transmittance, Formulae (mathematics), Temperature, Thickness, Cold rooms, Thermal behaviour of structures, Physical properties of soils, Heat transfer coefficient, Thermal measurement, Mathematical calculations, Thermal insulation
ICS91.120.10
Title in FrenchPerformance thermique des bâtiments. Transfert de chaleur par le sol. Méthodes de calcul
Title in GermanWärmetechnisches Verhalten von Gebäuden. Wärmeübertragung über das Erdreich. Berechnungsverfahren
CommitteeB/540
ISBN978 0 580 67102 9
PublisherBSI
FormatA4
DeliveryYes
Pages58
File Size1.121 MB
Price£254.00


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