DIN EN 12831 ("Heating Systems in Buildings - Method for Calculating the Standard Heat Load")

f) the design sensible heating or cooling load and design latent heat load using an hourly calculation interval;

The combination of heating load, energy source and heating equipment efficiency determines the annual cost of heating.

This combination of fuel choice, heating load and efficiency equipment determines what the yearly cost of heating is.

If you know your actual heating costs and the type of heating system you have, you can modify the heating load originally taken from Table 4 to suit your specific house.

If you know your actual heating costs, as well as the type of heating system you have, you can modify the heating load originally taken from Table 3 to relief real load of your house.

The heating/cooling load is limited to a maximum of 10 W/m2

The heating/cooling load is limited to a maximum of 10 W/m2.

Cooling and heating is limited to a maximum of 10 W/m2

The combination of heating load, fuel choice and equipment efficiency determines the annual cost of heating.

The heating load of a passive house is not more than 10 W/m2, for a room of 30 m2, this results in a heating load of approximately 300 Watts.

d) the sensible heating and cooling load, based on hourly calculations;

Energy performance of buildings - Method for calculation of the design heat load - Part 1: Space heating load, Module M3-3

Energy performance of buildings - Method for calculation of the design heat load - Part 1: Space heating load, Module M3-3

Energy performance of buildings - Method for calculation of the design heat load - Part 1: Space heating load, Module M3-3