Wyniki wyszukiwania - BazTech

1

Quality and specification of solid biofuels in Europe

Jevič P., Malat'ak J., Dubrovin V. O.

Journal of Research and Applications in Agricultural Engineering

|

2007

|

Vol. 52, nr 1

13-20

EN

Ukraine has rather big potential of biomass available for energy production. Biomass (excluding the share that is used by other sectors of economy) can cover up to 9% of the total primary energy demand. Technologies of biomass utilization are mostly at the beginning of their development in Ukraine, but they have good prospects for commercialization in the near future. The quality classification is interesting for both small and big consumers. The quality classification is focused to the most important commercial biofuels as briquettes, pellets, wood chips, crushed wooden fuel, wooden logs, sawdust, bark, straw bales. That classification is flexible and thus manufacturer or customer can choose any properties class corresponding with produced or required fuel quality. That free classification does not bind mutually different properties of individual fuels. Its advantage is in fact that manufacturer and customer can agree with a certain characteristics for each simple case. In the paper are presented Europian examples of specification of properties for briquettes, pellets, straw bales and for classes of high-quality solid biofuels for household. Development of bioenergy technologies would reduce Ukraine dependence on imported energy carriers, enhance its energy security at the expense of organizing energy supply based on local renewable sources, create a lot of new jobs (mostly in rural area), contribute greatly to the improvement of ecological situation.

2

Regulated emissions and efficiency of heating boilers for solid biofuels of nominal heat output up to 30 kW

Jevic P., Sediva Z., Dubrovin V.O.

Journal of Research and Applications in Agricultural Engineering

|

2006

|

Vol. 51, nr 1

41-44

EN

Effective and environmentally friendly utilization of suitable solid biofuels requires introduction of modern mechanization evaluated on basis of severe and measurable ecological demands. The study presents results of measuring of emissions O2, CO2, CO, NOx, CxHy during combustion of wooden pellets, billet poplar wood and wheat energy corn in the monitored prototypes of hot-water boilers with manual and automated fuel supply. For these devices -with nominal heat output of 30 kW was simultaneously determined the heat effectiveness.

3

Quality and specification of solid biofuels in Europe

Jevič P., Malaťák J., Dubrovin V. O.

Journal of Research and Applications in Agricultural Engineering

|

2006

|

Vol. 51, nr 4

52-59

EN

Ukraine has rather big potential of biomass available for energy production. Biomass (excluding the share that is used by other sectors of economy) can cover up to 9% of the total primary energy demand. Technologies of biomass utilization are mostly at the beginning of their development in Ukraine, but they have good prospects for commercialization in the near future. The quality classification is interesting for both small and big consumers. The quality classification is focused to the most important commercial biofuels as briquettes, pellets, wood chips, crushed wooden fuel, wooden logs, sawdust, bark, straw bales. That classification is flexible and thus manufacturer or customer can choose any properties class corresponding with produced or required fuel quality. That free classification does not bind mutually different properties of individual fuels. Its advantage is in fact that manufacturer and customer can agree with a certain characteristics for each simple case. In the paper are presented European examples of specification of properties for briquettes, pellets, straw bales and for classes of high-quality solid biofuels for household. Development of bioenergy technologies would reduce Ukraine dependence on imported energy carriers, enhance its energy security at the expense of organizing energy supply based on local renewable sources, create a lot of new jobs (mostly in rural area), contribute greatly to the improvement of ecological situation.

4

Existing standards and their need for liquid and gaseous alternative fuels standards

Jevic P., Dubrovin V.O., Sediva Z.

Journal of Research and Applications in Agricultural Engineering

|

2005

|

Vol. 50, nr 2

30-34

EN

Since the mid 1990s, resulting from concerns on climate change and its connection to the emission of greenhouse gases, the main interest in alternative fuels has been concentrated on fuels from biomass or rather carbon dioxide neutral fuels. Autumn 2001 the European Commission presented a draft communication and two directive proposals concerning the promotion of using bio fuels and other renewable fuels and also on the taxation of bio fuels. In May 2003 a directive for promotion of bio fuels and other renewable fuels came into force. On the basis of acquired information and own work the contribution involves review of national standards concerning alternative motor fuels. In connection with gradual introduction of the alternative motor fuels, research and development in this field in the time of anticipation of the European standards generation is presented.