scholarly journals Calorific evaluation and energy potential of grape pomace

2016 ◽  
Vol 30 (2) ◽  
pp. 261-265 ◽  
Author(s):  
Patrik Burg ◽  
David Ludín ◽  
Kazimierz Rutkowski ◽  
Anna Krakowiak-Bal ◽  
Petr Trávníček ◽  
...  
Keyword(s):  
Czech Republic ◽  
Thermal Energy ◽  
Waste Product ◽  
Electric Energy ◽  
Calorific Value ◽  
Grape Pomace ◽  
Gross Calorific Value ◽  
Energy Potential ◽  
Calorimetric Analysis ◽  
Grape Wine

AbstractThis article deals with energetic evaluation and potential of pomace – a waste product originating during production of grape wine. Calorimetric analysis of 19 grapevine varieties was performed in 2013 and 2014. The aim was to specify their combustible limit and the gross calorific value. The evaluations were performed on pristine pomace, pomace without seeds, and only on seeds themselves. The results obtained imply that pomace is an interesting energetic resource with a gross calorific value of 16.07-18.97 MJ kg−1. Lower calorific values were detected in pomace after seed separationie14.60-17.75 MJ kg−1; on the contrary, seeds alone had the highest calorific values of 19.78-21.13 MJ kg−1. It can be assumed from the results of energetic evaluation of pomace in Czech Republic conditions that, by purposeful and efficient usage of pomace, 6.4 GWh of electric energy and 28 GWh of thermal energy can be generated.

scholarly journals Assessment of the energetic potential by hazelnuts pruning in Viterbo’s area

2013 ◽  
Vol 44 (2s) ◽  
Author(s):  
D. Monarca ◽  
M. Cecchini ◽  
A. Colantoni ◽  
S. Di Giacinto ◽  
A. Marucci ◽  
...  
Keyword(s):  
Potential Energy ◽  
Thermal Energy ◽  
Energy Production ◽  
Calorific Value ◽  
Laboratory Analysis ◽  
Energy Potential ◽  
Average Value ◽  
Thermal Potential

In this work the amount of biomass available by the hazelnuts pruning in the province of Viterbo was investigated. At present, the pruning’s residues are destroyed by farmers directly in the field, at the end of the pruning; in this way a large quantity of biomass, represented by hazelnut’s prunings, is lost; the residues obtained from the hazelnut’s pruning, are an important source of biomass that could be used for thermal energy production. The aim of this work is to realize a map with the estimated energy potential from hazelnut pruning biomass, in the province of Viterbo. In the first phase the amount of biomass obtained from a hectare of hazelnut’s cultivationwas estimated:sampling were carried out in some municipalities of Viterbo while hazelnut pruning was taking place, from January to March.In the field, biomass was weighed and some pieces of wood were collected for laboratory analysis; in particular humidity of biomass, low calorific value, ashand the content of carbon (C), hydrogen (H) and nitrogen (N) were determined. In the calculation of the biomass were considered the age of the plants and the number of plants per hectare. The results show that the amount of biomass obtained from pruning of hazelnuts varies with the age of plants, but even more so by the number of plants per hectare. The average value of biomass obtained from pruning of a hectare of land is just under 0,9 t. Knowing the net calorific value of the hazelnut wood and the number of hectares cultivated for each municipality, a map of thermal potential energy has been realized.

scholarly journals Characterization of Pinus spp needles and evaluation of their potential use for energy

CERNE ◽  
2014 ◽  
Vol 20 (2) ◽  
pp. 245-250 ◽  
Author(s):  
Graciela Inés Bolzon de Muñiz ◽  
Elaine Cristina Lengowski ◽  
Silvana Nisgoski ◽  
Washington Luis Esteves de Magalhães ◽  
Valcineide Tanobe de Oliveira ◽  
...  
Keyword(s):  
Calorific Value ◽  
High Energy ◽  
Ash Content ◽  
Forest Residues ◽  
Gross Calorific Value ◽  
Energy Potential ◽  
New Energy ◽  
Pinus Spp ◽  
Potential Use

The demand for new energy sources is growing and awakening interest in the use of forest residues. Charcoal was prepared at carbonization temperatures of 500 ºC, 600 °C and 700 °C in order to evaluate the potential use of Pinus sp needles for energy. The anatomical and chemical characteristics of the needles and the charcoal produced were also evaluated. The needles were found to have ash content of 2.32% and gross calorific value of 20.30 MJ/kg. The calorific value increased by 45%, reaching 29.64 MJ/kg, after carbonization carried out at 600 ºC. This value is higher than that for charcoal made from eucalyptus (19.25 MJ/kg) and even coconut husks (23.55 MJ/kg), showing the high energy potential of these needles.

scholarly journals Possibility of using sour cherry pits as biofuel for obtaining thermal energy

2020 ◽  
Author(s):  
Milorad Petrović ◽  
◽  
Milan Jovanović ◽  
Zoran Štirbanović ◽  
Jovica Sokolović ◽  
...  
Keyword(s):  
Thermal Energy ◽  
High Efficiency ◽  
Calorific Value ◽  
Sour Cherry ◽  
Pollutant Emissions ◽  
Energy Potential ◽  
Fruit Species ◽  
Pre Treatment ◽  
The Republic ◽  
European Standards

In the Republic of Serbia, sour cherries are grown on approximately 14,000 hectares and represent the fourth fruit species in terms of area. The pits that remain after the processing of sour cherries are a by-product that burdens the business of the processors of this fruit. The quantities of pits that are produced annually are estimated at around 7,000 tons. This represents a good energy potential, bearing in mind that the calorific value of sour cherry pits is around 22 MJ / kg of dry matter. An additional convenience of sour cherry pits is in their dimensions that make them suitable for direct use in pellet boilers, without any pre-treatment. One of the boilers in which it is possible to burn dried sour cherry pits in order to obtain thermal energy, is Šukoplam VENT, a manufacturer of boilers Šukom from Knjaževac. This boiler has good characteristics such as: high efficiency (up to 94%), quality of materials and workmanship, the possibility of using several types of biofuels and their quality combustion, based on which it met the requirements for Class 5 (Ecodesing) related to pollutant emissions by the latest European standards.

scholarly journals Assessment of the energetic potential by hazelnuts pruning in Viterbo’s area

2013 ◽  
Vol 44 (2s) ◽  
Author(s):  
D. Monarca ◽  
M. Cecchini ◽  
A. Colantoni ◽  
S. Di Giacinto ◽  
A. Marucci ◽  
...  
Keyword(s):  
Potential Energy ◽  
Thermal Energy ◽  
Energy Production ◽  
Calorific Value ◽  
Laboratory Analysis ◽  
Energy Potential ◽  
Average Value ◽  
Thermal Potential

In this work the amount of biomass available by the hazelnuts pruning in the province of Viterbo was investigated. At present, the pruning’s residues are destroyed by farmers directly in the field, at the end of the pruning; in this way a large quantity of biomass, represented by hazelnut’s prunings, is lost; the residues obtained from the hazelnut’s pruning, are an important source of biomass that could be used for thermal energy production. The aim of this work is to realize a map with the estimated energy potential from hazelnut pruning biomass, in the province of Viterbo. In the first phase the amount of biomass obtained from a hectare of hazelnut’s cultivationwas estimated:sampling were carried out in some municipalities of Viterbo while hazelnut pruning was taking place, from January to March.In the field, biomass was weighed and some pieces of wood were collected for laboratory analysis; in particular humidity of biomass, low calorific value, ashand the content of carbon (C), hydrogen (H) and nitrogen (N) were determined. In the calculation of the biomass were considered the age of the plants and the number of plants per hectare. The results show that the amount of biomass obtained from pruning of hazelnuts varies with the age of plants, but even more so by the number of plants per hectare. The average value of biomass obtained from pruning of a hectare of land is just under 0,9 t. Knowing the net calorific value of the hazelnut wood and the number of hectares cultivated for each municipality, a map of thermal potential energy has been realized.

The Energy Potential of Municipal Waste in the Žilina Region

2016 ◽  
Vol 832 ◽  
pp. 63-68
Author(s):  
Michal Holubčík ◽  
Alexander Čaja ◽  
Jozef Jandačka ◽  
Marián Jobb
Keyword(s):  
Waste Management ◽  
Slovak Republic ◽  
Calorific Value ◽  
Developed Countries ◽  
Municipal Waste ◽  
Energy Utilization ◽  
Gross Calorific Value ◽  
Energy Potential ◽  
Waste Production ◽  
Municipal Waste Management

Waste production is greater every year with society evolution. The same problem is also in Slovak republic, but Slovakia is significantly behind other developed countries in municipal waste management especially in area of energy utilization and recovery of the municipal waste. This problem will be totally reflected after the ban of the waste dumping in landfills. This work solves the problem of waste management in the Žilina region of Slovakia. Žilina region produces approximately 185000 tons of municipal waste. At present there is the majority of the waste dumped in the landfills. Large part of this waste could be energy utilized. Except municipal waste can be also used other types of the waste for the energy utilization. The paper evaluates energy potential of municipal waste in Žilina region. During the work it was determined the ratio composition of the waste in the Žilina region. There were measured gross calorific value, low calorific value and humidity on the waste samples. Based on these results it was determined energy potential of the municipal waste in the Žilina region. This energy potential could provide part of the heat and electricity for the Žilina region after using appropriate methods of thermal disposal.

scholarly journals Potential of bamboo for energy purposes

2020 ◽  
Vol 9 (7) ◽  
pp. e40973537
Author(s):  
Fernando Rusch ◽  
Danielle de Moraes Lúcio ◽  
Rafaela Faber de Campos
Keyword(s):  
Eucalyptus Grandis ◽  
Calorific Value ◽  
Raw Material ◽  
Eucalyptus Urophylla ◽  
Gross Calorific Value ◽  
Energy Potential ◽  
High Productivity ◽  
Average Value ◽  
Handling Cost ◽  
Renewable Raw Material

Bamboo is a versatile, rapidly growing renewable raw material with high productivity, low handling cost, high ability to sequester atmospheric carbon and potential for energy purposes. The paper aimed to describe the potential of bamboo for energy purposes through different product alternatives. A specific literature review was carried out to tabulate data related to different energy alternatives for bamboo, considering the following questions: (i) which are the alternative bamboo products with energy potential? (ii) what are the parameters traditionally described in scientific articles? The average value of 4,396, 6,994, 4,597 and 4,530 kcal.kg-1, was found in the Gross Calorific Value (GCV) of biomass, charcoal, briquette and pellets of different bamboo species, values similar to those found for Eucalyptus grandis x Eucalyptus urophylla hybrid wood. The data prove the potential of bamboo as a source of energy and may even replace tree species traditionally used.

scholarly journals Review of energy potential of the wood biomass of orchards and vineyards in the Czech Republic

2017 ◽  
Vol 63 (Special Issue) ◽  
pp. S1-S7 ◽  
Author(s):  
Burg Patrik ◽  
Mašán Vladimír ◽  
Dušek Martin ◽  
Zemánek Pavel ◽  
Rutkowski Kazimierz
Keyword(s):  
Czech Republic ◽  
Calorific Value ◽  
Fruit Trees ◽  
Biomass Energy ◽  
Individual Species ◽  
Agricultural Activity ◽  
Energy Potential ◽  
The Czech Republic ◽  
Fruit Species ◽  
Average Production

The most important sources of biomass energy are currently coming from agricultural activity. A sizeable portion in production areas is waste wood after the winter cut of orchards and vineyards, which cover areas exceeding 30,000 ha in the Czech Republic. The most important are species like apples, peaches, apricots, plums, sweet cherries, sour cherries and grapevines. Average production of wood mass for individual species of fruit trees and grapevines ranges from 1,540 kg/ha up to 6,762 kg/ha, i.e. 1.5 t/ha to 6.8 t/ha. The calorific value for these species ranges from 14.70 to 16.39 MJ/kg, with moisture between 6 and 8%. The results show that the total measured energy potential of the fruit species-cultivated areas is 1,469.7 TJ for the whole Czech Republic. 

Parameters Influencing the Utilization of Composts for Energy Production

2013 ◽  
Vol 853 ◽  
pp. 329-334 ◽  
Author(s):  
Konstantin Raclavsky ◽  
Ondrej Zajonc ◽  
Lucia Kovalova ◽  
Radim Kovarik
Keyword(s):  
Czech Republic ◽  
Elemental Composition ◽  
Energy Production ◽  
Calorific Value ◽  
Point Of View ◽  
Fixed Carbon ◽  
Gross Calorific Value ◽  
The Czech Republic

Ten composts produced by composting plants in the Moravosilesian Region (the Czech Republic) were studied from the point of view of their possible utilization for energy production. The parameters relevant for this possible application of low-quality composts were determined: elemental composition (C,H,O,N,S), volatile combustibles, fixed carbon, ash, gross calorific value, moisture, water leachable potassium and chlorine, alkali index, C/N.

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