E-ISBN 978-9984-861-17-3

table of Contents

 

Growing and processing technologies of energy crops
 
 
Fibre crops for energy production and energy saving
Winfried Schäfer
7
Industrial hemp – a promising source for biomass production
Zofija Jankauskienė, Elvyra Gruzdevienė
13
Evaluation of reed resources in Kurzeme region in Latvia
Edgars Čubars, Gotfrīds Noviks
19
The evaluation of dry mass yield of new energy crops and their energetic parameters
Gintaras Šiaudinis, Alvyra Šlepetienė , Danutė Karčauskienė
24
Inoculation as an element of energy saving in the cultivation technology of grain legumes under conditions
of the forest-steppe of Ukraine
Serhiy Kolisnyk, Svitlana Kobak
29
Cereal grain as alternative fuel in Latvia
Inga Jansone, Zinta Gaile
33
Oilseed rape (Brassica napus ssp. oleifera) seed yield depending on several agro-ecological factors
Oskars Balodis, Zinta Gaile
39
Comparison of different energy crops for solid fuel production in Latvia
Ļubova Komlajeva, Aleksandrs Adamovičs, Liena Poiša
45
Maize production for biogas in Latvia
Janis Bartusevics, Zinta Gaile
51
The estimation of energy efficiency of crop rotation in long–term trials
Janis Vigovskis, Daina Sarkanbarde, Agrita Svarta, Aivars Jermuss, Ludmila Agafonova
57
Reed canary grass (Phalaris arundinacea L.) in natural biocenosis of Latvia, research experiments and
production fields
Biruta Jansone, Sarmite Rancane, Peteris Berzins, Vija Stesele
61
Biomass potential of plants grown for bioenergy production
Jonas Slepetys, Zydre Kadziuliene, Lina Sarunaite, Vita Tilvikiene, Aldona Kryzeviciene
66
Oil-flax variety ‘Scorpion’ suitability of assessment for biofuels production
Liena Poiša, Aleksandrs Adamovičs
73
Energy-saving technology of maize grain conservation in big-bags
Oleksandr Kurnaev
79
Effect of soil tillage and herbicides on the grain maize yield under conditions of the forest-steppe zone of Ukraine
Vasyl Petrichenko, Viktor Zadorozhnyi, Olexandr Kornyichuk, Volodymyr Borona
80

Biogas and biofuel production technologies
 
Policies and measures to promote sustainable bioenergy production and use in the Baltic Sea region
Michael Krug
81
Bio-fuel from anaerobic co-digestion of the macro-algae Ulva lactuca and Laminaria digitata
Shiplu Sarker, Anette Bruhn, Alastair James Ward, Henrik Bjarne Møller
86
Biomass as the main source of renewable energy in Poland
Wyszyński Zdzisław, Michalska-Klimczak Beata, Pągowski Krzysztof, Kamińska Sonia
91
Small CHP plants in Latvia: reality and possibilities
Tatjana Odineca
97
Specified evaluation of manure resources for production of biogas in planning region Latgale
Imants Plūme, Vilis Dubrovskis, Benita Plūme
103
Analytical model and simulation of oxygen solubility in wastewater
Aigars Laizāns, Andris Šnīders
109
Biogas production potential from agricultural biomass and organic residues in Latvia
Vilis Dubrovskis, Vladimirs Kotelenecs, Eduards Zabarovskis , Arvids Celms, Imants Plume
115
Co-fermentation of biomass with high content of lignocelluloses for biogas producing
Vilis Dubrovskis, Vladimirs Kotelenecs, Arvīds Celms, Eduards Zabarovskis
121
The Investigation of Biogas Potential in the Vidzeme Region
Indulis Straume
127
The Investigation of Biogas Potential in the Pieriga Region
Indulis Straume
133
GHG emissions from the usage of energy crops for biogas production
Imants Plūme, Vilis Dubrovskis, Benita Plūme
139

Conditioning of the energy crop biomass compositions
 
Cutting properties of arranged stalk biomass
Andris Kronbergs, Eriks Kronbergs, Elgars Siraks, Janis Dalbins
145
Preliminary data on the productivity of stump lifting head MCR-500
 Andis Lazdiņš, Agris Zimelis, Igors Gusarevs
150
Preliminary results of estimation of forest biomass for energy potentials in final felling using a system analysis model
Andis Lazdiņš, Dagnija Lazdiņa, Gaidis Klāvs
156
Heat of Combustion of Hemp and Briquettes Made of Hemp Shives
Jacek Kolodziej, Maria Wladyka - Przybylak, Jerzy Mankowski, Lidia Grabowska
163
Regionally Specific Harvesting Residue Yield and Recovery Rates Used for Energy Policy Development
Arnis Jurevics, Dennis Hazel, Robert Abt, Mark Megalos, Ola Sallnas
 167
Influence of the particle parameters on the properties of biomass briquettes
Dainis Ancāns, Aivars Kaķītis, Imants Nulle
 173
Evaluation of biomass compacting mechanisms
Edgars Repsa, Eriks Kronbergs, Mareks Smits
179

Solar energy applications and energy efficiency technologies in buildings
 
Water heating effectiveness of semi-spherical solar collector
Ilze Pelece, Imants Ziemelis
185
The tracking system for solar collectors with reflectors
Liene Kancevica, Henriks Putans, Imants Ziemelis
190
Criteria of effectiveness evaluation of variable speed centrifugal pumps in heating and cooling systems
Deniss Pilscikovs, Egils Dzelzitis
196
Experimental investigation of heat carrier flow efficiency
Viktorija Zagorska, Henriks Putans, Imants Ziemelis
201
Impact of indoor temperature on energy efficiency in office buildings
Galina Stankevica, Andris Kreslins
207
Air heated solar collectors and their applicability
Aivars Aboltins, Guntis Rušķis, Janis Palabinskis
212
Heat transfer in external walls made from autoclaved aerated concrete
Martins Vilnitis, Baiba Gaujena
218
Evaluation of parameters of radiant heating systems
Jelena Psenicnaja
224

Economic and legislative aspects of the renewable energy production
 
Policy of the European Union in the Field of Renewable Energy Resources in the Context of Common Power Industry Policy
Artis Broņka, Andra Zvirbule-Bērziņa
225
Possibilities for renewable energy production on farms
Voldemārs Strīķis, Arnis Kalniņš, Arnis Lēnerts
231
Development of institutional environment to promote the usage of renewable energy resources in Latvia
Jānis Leikučs
235
Global and local challenges in the cultivation of food and energy crops
 Modrīte Pelše, Kaspars Naglis-Liepa
242
Risk management in renewable energy production
Sandija Rivža, Pēteris Rivža
249
Learning and innovation in networks: the case of biogas production in Latvia
Talis Tisenkopfs, Sandra Šūmane, Ilona Kunda
255
Possibilities for biogas production development on the LLU Training and Research farm ,,Vecauce’’
Jolanta Klāviņa, Voldemārs Strīķis
256