Cakmak, Abdulvahap Kapusuz, Murat Ganiyev, Orkhan Ozcan, Hakan
Published in
Environmental and Climate Technologies
The objective of this paper is to investigate the use of methyl acetate as oxygenated fuel blending for base gasoline in SI engine. The effects of methyl acetate on engine performance parameters (brake specific fuel consumption, brake thermal efficiency and energy consumption rate) and exhaust emissions (CO, HC, CO2 and NOx) of SI engine have been ...
Klavins, Maris Bisters, Valdis Burlakovs, Juris
Published in
Environmental and Climate Technologies
Gasification is the process converting solid fuels as coal and organic plant matter, or biomass into combustible gas, called syngas. Gasification is a thermal conversion process using carbonaceous fuel, and it differs substantially from other thermal processes such as incineration or pyrolysis. The process can be used with virtually any carbonaceou...
Biseniece, Edite Freimanis, Ritvars Purvins, Reinis Gravelsins, Armands Pumpurs, Aivars Blumberga, Andra
Published in
Environmental and Climate Technologies
Being an important contributor to the final energy consumption, historic buildings built before 1945 have high specific heating energy consumption compared to current energy standards and norms. However, they often cannot be insulated from the outside due to their heritage and culture value. Internal insulation is an alternative. However internal i...
Dhaundiyal, Alok Singh, Suraj B. Hanon, Muammel M. Rawat, Rekha
Published in
Environmental and Climate Technologies
A kinetic study of pyrolysis process of Parthenium hysterophorous is carried out by using thermogravimetric analysis (TGA) equipment. The present study investigates the thermal degradation and determination of the kinetic parameters such as activation E and the frequency factor A using model-free methods given by Flynn Wall and Ozawa (FWO), Kissing...
Priedniece, Vivita Spalvins, Kriss Ivanovs, Kaspars Pubule, Jelena Blumberga, Dagnija
Published in
Environmental and Climate Technologies
The increasing amount of food waste througout the world is becoming a major problem for waste management plants. The food waste produced amounts to 1.3 million tons a year. This is a resource that could be used for production of new products. Decreasing fossil resources and a rapidly growing population lead to the necessity to produce more food and...
De, Bhaskar Mukherjee, Mahua
Published in
Environmental and Climate Technologies
Air temperature in urban street canyons is increased due to the morphed urban geometry, increased surface area, decreased long wave radiation and evapo-transpiration, different thermo-physical properties of surface materials and anthropogenic heat which results in thermal discomfort. Outdoor thermal stress can be mitigated substantially by properly...
Avotniece, Zanita Briede, Agrita Klavins, Maris Aniskevich, Svetlana
Published in
Environmental and Climate Technologies
Thunderstorms are the most hazardous meteorological phenomena in Latvia in the summer season, and the assessment of their characteristics is essential for the development of an effective national climate and weather prediction service. However, the complex nature of convective processes sets specific limitations to their observation, analysis and f...
Sohail, Maha
Published in
Environmental and Climate Technologies
A large proportion of the world’s population resides in developing countries where there is a lack of rigorous studies in designing energy efficient buildings. This study is a step in designing a naturally ventilated high rise residential building in a tropical climatic context of the developing country, Pakistan. Karachi, the largest city of Pakis...
Vigants, Edgars Prodanuks, Toms Vigants, Girts Veidenbergs, Ivars Blumberga, Dagnija
Published in
Environmental and Climate Technologies
Flue gas evaporation and condensing processes are investigated in a direct contact heat exchanger - condensing unit, which is installed after a furnace. By using equations describing processes of heat and mass transfer, as well as correlation coherences for determining wet gas parameters, a model is formed to create a no-filling, direct contact hea...
Bariss, Uldis Bazbauers, Gatis Blumberga, Andra Blumberga, Dagnija
Published in
Environmental and Climate Technologies
Increased energy efficiency of the building sector is high on the list of priorities for energy policy since better energy efficiency would help to reduce impact on climate change and increase security of energy supply. One aim of the present study was to find a relative effect of growth of demand for energy services due to changes in income, energ...
