• Energy Research
• engineering and technology close
• 11. Sustainability close
• Serbian close

Biomass can be considered strategic potential, not only because it is a renewable source of energy and it is widespread, but also because its application can provide a sufficient amount of energy to reduce emissions of CO2 and other greenhouse gases, resulting in a minimum negative impact on environment. This paper presents an overview of techniques for biomass burning, as well as technical and technological characteristics of plant for the production of energy from biomass in order to promote the implementation of renewable energy sources. It also presents the option and joint combustion of biomass and fossil fuels. The decisive factor in the increased use of biomass should be its low acquisition and operating costs, but the application of modern low-emission incinerator is economically viable only for large plants, because then gets maximum effect from the problem of fuel (straw and specially planted Culture (Miscanthus Sinesis)). .

Buildings are among the top of energy consumers. It is estimated that over 50% of the overall produced energy is consumed in buildings, mainly on heating and cooling. Application of air conditioning systems saw an important expansion in the past decade. These systems are used, not only for cooling but for heating, or supplemental heating, as well (as heat pumps). While there is virtually no alternative to their usage as cooling systems, heating applications should be reconsidered in a more subtle manner to maintain the principles of energy efficiency. Mass consumption of air conditioners has as an effect a significant rise in consumption of energy, mainly during the summer. Aesthetic consequences are another important problem. Since the placement of these appliances is not regulated by law, and left to the citizens they are commonly self-initiated and misaligned which undermines aesthetic values. Additional problem is placement of air conditioning systems on protected objects (religious institutions, object under protection) which undermines not only aesthetic, but historical value as well. On the other hand, many new buildings represent a positive example, since this problem is adhered from the very start of conceptual design, and these appliances are covered with adequate architectural solutions. This paper will try to cover positive and negative examples of Serbia, Montenegro, and some other Balkan and Western Europe's countries. It will also give recommendations in solving the negative energy and aesthetic consequences of these problems. Non-controlled application of air conditioning systems is becoming a health problem. Large differences between the interior and exterior temperature leads to an array of health problems registered by many medical reports. Improper maintenance of air conditioning systems could lead to bacterial propagation which could seriously damage health.