Environmental Engineering Reference
In-Depth Information
ISO/TC 163/WG 4 (Joint TC 163 - TC 205 WG)
Delivered to or
exported from
technical system
Building “needs”
= Conversion factors,
needed to aggregate
energy to one numerical
indicator, e.g. “E
P
”, “E
CO
2
”,..
Systems part
Electric
appliances
Lighting
Delivered
Electricity
Ventilation***
Heating/
cooling
systems
(incl.
BCHP*)
PV**, local
Solar
thermal
Gas, oil, coal, wood, ...
Hot water
District heating
or cooling
Cooling
Input dh/dc
(district heating
and cooling)
Exported
Heating
Electricity
Cooking, ..
Heat
Building
* BCHP = building combined heat and power
** PV = photovoltaic
*** Air transport for ventilation
Renewable
FIGURE 7.4
Boundaries and main building energy performance elements. (From Van Dijk, D. and Khalil,
E. E.,
ISO Focus
., 25-27, 2011.)
The standards that provide the procedures on boundary conditions com-
prise external climatic conditions, indoor environment conditions (thermal
and visual comfort, indoor air quality etc.), standard operating assumptions
(occupation) and national legal restrictions.
7.2 Energy-Efficient Buildings
7.2.1 Energy Declaration of Buildings
The primary use of energy declarations is
1. To create consciousness of energy efficiency in buildings and also
improve the knowledge of energy use in buildings
2. To determine if a building works as well as possible with regard to
its technical design
3. For benchmarking
