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  • BSI
    BS ISO 13612-2:2014 Heating and cooling systems in buildings. Method for calculation of the system performance and system design for heat pump systems - Energy calculation
    Edition: 2014
    $614.12
    / user per year

Description of BS ISO 13612-2:2014 2014

This International Standard is applicable to heat pumps for space heating and cooling, heat pump water heaters (HPWH), and heat pumps with combined space heating and/or cooling and domestic hot water production, in alternate or simultaneous operation, where the same heat pump is used for space heating and domestic hot water heating.

This part of ISO 13612 provides a calculation method under steady conditions that corresponds to one calculation step.

The results of this calculation are incorporated in larger building models and take into account the influence of the external conditions and building control that influence the energy requirements for heating and cooling supplied by the heat pump system.

This part of ISO 13612 specifies the required inputs, calculation methods, and required outputs for output thermal power generation for space heating and cooling and domestic hot water production of the following heat pump systems, including control:

  • electrically driven vapour compression cycle (VCC) heat pumps;

  • combustion engine-driven vapour compression cycle heat pumps;

  • thermally driven vapour absorption cycle (VAC) heat pumps,

using combinations of heat source and heat distribution listed in Table 1.

Table 1

Heating/cooling sources and energy distribution

Source Distribution
Outdoor air Air
Exhaust-air Water
Indirect ground source with brine distribution Direct condensation/evaporation of the refrigerant in the appliance (VRF)
Indirect ground source with water distribution
Direct ground source [Direct expansion (DX)]  
Surface water  
Ground water  


About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.

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