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Calculation of the building's thermal load

Objective

Calculation of the building's thermal load to verify the ordered power.

Calculation of the building's thermal load to verify the ordered power.

The scope of analysis includes calculations:

  • Peak heating power [ HL,   kW ]
  • Heating demand (final energy) for heating in the standard reference year after taking into account the efficiency of the heating system [ QH,nd ,  GJ/a ]
  • Annual heat demand indicator (final energy) for heating in the standard reference year to the usable area of the heated part of the building [ EAH, kWh/(m2 year) ]
  • Cubic indicator of the demand for peak heating power of a building defining the maximum power needed to heat 1 m3 of volume of heated part of a building [ HL/V,   W/m3 ]
  • Cubic indicator of the seasonal heat demand (final energy) for heating, expressing the amount of heat energy in the GJ required for heating up to the standard temperature of 1 m3 cubic volume of heated part of the building per year [ QH,nd/V, GJ/(m3a) ]

Methodology

Ordered power is calculated on the basis of standard EN 12831 "Heating systems in buildings. Method of calculation of design thermal load ". The ventilation air volume for calculation will be determined on the basis of the standard PN-EN 12831. Calculations are made using the AUDYTOR OZC 6.5 Pro computer program, adopting the climate data published on the Ministry of Infrastructure website for monthly average values of outdoor temperatures.

Calculation of the heat demand for building heating in the standard reference year is based on PN-EN ISO 13790 "Energy performance of buildings -- Calculation of energy use for space heating and cooling" and The Ordinance of the Minister of Infrastructure and Development of 27 February 2015 on the methodology for determining the energy performance of a building or part of a building and energy performance certificates. Calculations are made using the computer program AUDYTOR OZC 6.5 Pro. The ventilation air flow is determined by the norm PN-83 / B-03430 / Az3: 2000.

In addition, the following are used for calculations:

Reference

Thirteen buildings of the Szaserów Housing Cooperative in Warsaw (2010), more than 40 housing associations from Warsaw and surrounding areas

Persons responsible for contact with customers

Marek Amrozy, mamrozy@nape.pl, tel. 22 505-45-00
Janusz Łaszczych, jlaszczych@nape.pl, tel. 22 505-44-99