International Organization for Standardization (ISO) rolls out a campaign on energy efficiency from 7 to 11 November 2016.

Below is an article of Mr. Ljubiša Tanić, experts in the field of HVAC (Heating, Ventilation and Air Conditioning Systems), a member of the Technical Committee BAS/TC 47, Appliances and systems for heating and refrigiration  

The continuous growth of energy consumption at the global level is primarily happening due to:

1. Planet’s population growth;
2. requests for increased comfort of a growing number of the world’s population.

Energy consumption in buildings account for the largest share (about 40%) of total world energy consumption.
Heating/cooling and domestic hot water are by far the larger energy user in buildings.

The comfort of the people, in addition to personal influence (the degree of physical activity and human form), is most affected by the thermal environmental conditions (air temperature, mean temperature of the surrounding surfaces, relative humidity, air velocity, and indoor air quality).

The main task of the devices for heating, cooling and ventilation is maintaining the desired values ​​of thermal comfort conditions for work and human occupancy in an energy efficient manner, i.e. with lowest possible energy consumption.

Consumption of a specific energy product for heating/cooling primarily depends on the difference between indoor and outdoor temperature, thermal insulation of the facility and the efficiency  of devices to transform the energy product into heating/cooling energy.

Measurements confirmed that if heating devices rises room temperature by 1 degree Celsius during the winter, energy consumption rises for about 6%. If, during the summer, the temperature is lower than projected, each degree additionally uses almost 19% more energy!
Therefore, devices for heating, cooling and ventilation, among other things, must have previously installed appropriate components for automatic control.

The key factor in sustainable development is that boilers and cooling devices have the highest possible efficiency level, and that renewable energy sources are used as energy products as much as possible (e.g. the proper use of solar collectors for domestic hot water, the use of heat pumps, the use of wood chips...)

The correct and consistent application of standards plays a key role in achieving and maintaining desired values ​​of thermal comfort for work and human occupancy  in an energy efficient manner. The standards also prescribe the design parameters of the internal environment, permitted values of heat transfer coefficient through the building envelope, efficiency and energy class appliances for transforming energy into heat source for heating/ cooling energy, the quality of energy products ...

Bearing in mind the fact that the buildings in BiH, in relation to buildings in developed EU countries, consume more energy per capita, special attention should be given to the energy efficiency in buildings.
The European Energy Performance of Buildings Directive 2010/31/EU - EPBD specifies the measures to reduce energy consumption in buildings as well as the deadlines for implementing these measures. By applying the said Directive, the requirements of the Kyoto Protocol to the United Nations Framework Convention on Climate Change (UNFCCC) will be met.

Institute for Standardization of Bosnia and Herzegovina (BAS) adopted, among others, the following standards related to the energy efficiency of buildings:

BAS EN 15232: 2013, Energy performance of buildings - Impact of building automation, controls and building management
BAS EN 15500: 2009, Control for heating, ventilating and air-conditioning applications - Electronic individual zone control equipment
BAS ISO 13153:2013, Framework of the design process for energy-saving single-family residential and small commercial buildings
BAS ISO 23045: 2010, Building environment design - Guidelines to assess energy efficiency of new buildings

BAS EN ISO 13790: 2008, Energy performance of buildings -- Calculation of energy use for space heating and cooling

BAS ISO 18292: 2012, Energy performance of fenestration systems for residential buildings - Calculation procedure

International Organization for Standardization (ISO) is currently working on the following standards in these areas:

ISO/PRF TR 52000-2, Energy performance of buildings - Overarching EPB assessment - Part 2: Explanation and justification of ISO 52000 -1

ISO/FDIS 52000-1, Energy part of buildings - Overarching EPB assessment - Part 1: General framework