scholarly journals Le potentiel de la biomasse forestière comme source d’énergie pour le Canada

2011 ◽  
Vol 87 (03) ◽  
pp. 345-350 ◽  
Author(s):  
David Paré ◽  
Pierre Bernier ◽  
Evelyne Thiffault ◽  
Brian Titus
Keyword(s):  
Energy Source ◽  
Heat Production ◽  
Energy Demand ◽  
Forest Biomass ◽  
Ghg Emissions ◽  
Combined Heat And Power ◽  
Energy Demands ◽  
Biomass Supply ◽  
Relative Scarcity ◽  
Le Canada

There is a growing interest in using forest biomass as an energy source. The main objectives of this paper are to give some figures and perspectives on Canadian forest biomass supply with respect to Canada's energy demand and to examine the potential of using this feedstock for reducing our greenhouse gas (GHG) emissions. Published estimates of forest biomass supply as harvest residues are reported and discussed. The range of estimates listed here indicates that this source of energy is important but that it is still a fraction of our energy demands. The potential of using this biomass to reduce our GHG emissions is strongly dependent, among other factors, on the technological pathways that are used, with direct heat production and combined heat and power (CHP) ranking amongst the best options available. The relative scarcity of the resource behooves us to use it efficiently.

scholarly journals The potential of forest biomass as an energy supply for Canada

2011 ◽  
Vol 87 (1) ◽  
pp. 71-76 ◽  
Author(s):  
David Paré ◽  
Pierre Bernier ◽  
Evelyne Thiffault ◽  
Brian D Titus
Keyword(s):  
Energy Source ◽  
Greenhouse Gas ◽  
Energy Supply ◽  
Energy Demand ◽  
Forest Biomass ◽  
Ghg Emissions ◽  
Combined Heat And Power ◽  
Greenhouse Gas Mitigation ◽  
Energy Demands ◽  
Relative Scarcity

There is a growing interest in using forest biomass as an energy source. The main objectives of this paper are to give somefigures and perspectives on Canadian forest biomass supply with respect to Canada’s energy demand and to examine thepotential of using this feedstock for reducing our greenhouse gas (GHG) emissions. Published estimates of forest biomasssupply as harvest residues are reported and discussed. The range of estimates listed here indicates that this source ofenergy is important but that it is still a fraction of our energy demands. The potential of using this biomass to reduce ourGHG emissions is strongly dependent, among other factors, on the technological pathways that are used, with direct heatproduction and combined heat and power (CHP) ranking amongst the best options available. The relative scarcity of theresource behooves us to use it efficiently. Key words: forest biomass, residue, greenhouse gas, mitigation, energy, sustainable forestry

Considerations Regarding the Use of Fuel Cells in Combined Heat and Power for Stationary Applications

2021 ◽  
pp. 239-275
Author(s):  
Andrei Mircea Bolboaca
Keyword(s):  
Energy Demand ◽  
Alternative Energy ◽  
Clean Energy ◽  
Combined Heat And Power ◽  
Pollutant Emissions ◽  
Energy Technologies ◽  
Energy Demands ◽  
New Energy ◽  
Energy Conversion Systems ◽  
Polluting Emissions

Covering the energy demands under environmental protection and satisfying economic and social restrictions, together with decreasing polluting emissions, are impetuous necessities, considering that over half of the pollutant emissions released in the environment are the effect of the processes of electricity and heat production from the classic thermoelectric powerplant. Increasing energy efficiency and intensifying the use of alternative resources are key objectives of global policy. In this context, a range of new energy technologies has been developed, based on alternative energy conversion systems, which have recently been used more and more often for the simultaneous production of electricity and heat. An intensification of the use of combined energy production correlated with the tendency towards the use of clean energy resources can be helpful in achieving the global objectives of increasing fuel diversity and ensuring energy demand. The chapter aims at describing the fuel cell technology, in particular those of the SOFC type, used in the CHP for stationary applications.

scholarly journals Effects of Local Biomass Availability and Road Network Properties on the Greenhouse Gas Emissions of Biomass Supply Chain

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
E. Jäppinen ◽  
O.-J. Korpinen ◽  
T. Ranta
Keyword(s):  
Greenhouse Gas ◽  
Road Network ◽  
Forest Biomass ◽  
Ghg Emissions ◽  
Local Conditions ◽  
Biomass Supply ◽  
Network Properties ◽  
Gis Methods ◽  
Biomass Availability

This study presents two case studies of 100 GWh of forest biomass supply: Rovaniemi in northern Finland and Mikkeli in south-eastern Finland. The study evaluates the effects of local biomass availability and road network properties on the greenhouse gas (GHG) emissions of these two supply chains. The local forest biomass availability around the case study locations, truck transportation distances, and road network properties were analyzed by GIS methods to produce accurate and site-dependent data for the transportation emission calculations. The GHG emissions were then assessed by LCA methods. The total transportation distance to Rovaniemi was 22% larger than to Mikkeli, but the transportation derived GHG emissions were 31% larger. The results highlight the fact that local conditions should always be taken into account when assessing the sustainability of biomass-based energy production.

scholarly journals Towards sustainable housing: ABS industrialized passive buildings = Hacia la vivienda sostenible: los edificios industrializados pasivos ABS

2018 ◽  
Vol 2 (2) ◽  
pp. 53
Author(s):  
Pedro García SanMiguel ◽  
Julian García Muñoz
Keyword(s):  
Energy Consumption ◽  
Co2 Emissions ◽  
Energy Demand ◽  
Ghg Emissions ◽  
Construction Sector ◽  
Sustainable Housing ◽  
Energy Demands ◽  
Use Stage ◽  
Building System ◽  
Model Versus

Abstract Promoting innovation in the construction sector is one of the cornerstones of sustainability, since it is one of the main responsible for GHG emissions. This paper provides a proposal for sustainable housing: the industrialized passive home of American Building System Company (ABS) and its suitability to be incorporated into the construction system. Following the comparative analysis of the energy demands of this model versus an equivalent house which follows the regulations of the CTE. These data will be simulated by the SG SAVE software that perform the energy simulation of the both systems, based on the transmittance values of enclosures and glass and the final tightness of the homes. From these results about the savings in energy consumption, an economic analysis has been carried out and an assessment of the amortization period of the proposed house facing the other. In addition, through the calculation coefficients of equivalent CO2 emissions from the Spanish Ministry of Industry, the reduction of greenhouse gas emissions associated with energy consumption during the use stage has been obtained. Finally, for a standardize comfort conditions, the modelling and the assessment allow us to conclude that the deployment of ABS house in comparison with the conventional Spanish system supposes a reduction of 60% in energy demand, a 90% in CO2 emissions, and an amortization period of 12 years. With all these evidences we should start to think why this system has not been already integrated in the Spanish construction sector. Resumen Fomentar la innovación en el sector de la construcción es una de las piedras angulares de la sostenibilidad, pues la construcción es uno de los sectores responsables de las emisiones de GEI. Este artículo busca ofrecer una propuesta para la construcción sostenible: la vivienda pasiva industrializada de la empresa American Building System (ABS) y su idoneidad para ser incorporada como sistema constructivo tras el análisis comparativo de sus demandas energéticas frente a los de una vivienda equivalente que sigue la normativa del Código Técnico de la Edificación. Estos datos han sido obtenidos a partir del modelado energético de la vivienda a través del software SG SAVE, en función de los valores de transmitancia de cerramientos y vidrios y la estanqueidad final de la vivienda. A partir de estos resultados se ha realizado un análisis económico y se ha calculado el periodo de amortización de la vivienda propuesta frente a la del sistema convencional. Por otro lado, mediante los coeficientes de cálculo de emisiones del Ministerio de Industria Español, ha sido posible estimar la reducción emisiones de CO2 asociadas al consumo de energía durante la etapa de uso como consecuencia de la reducción de demanda energética entre ambas viviendas. Finalmente, para unas condiciones de confort normalizadas, la modelización energética y el análisis de resultados nos permiten concluir que la vivienda ABS en comparación con la vivienda del sistema convencional español nos permite reducir la demanda energética en hasta un 60%, las emisiones de CO2 en hasta un 90%, con un período de amortización de 12 años. Con todas estas evidencias de mejoría se plantea una reflexión final que es la de por qué este tipo de sistemas constructivos no están todavía integrados en el modelo constructivo español .

scholarly journals The Role of Single End-Users and Producers on GHG Mitigation in Pakistan—A Case Study

2020 ◽  
Vol 12 (20) ◽  
pp. 8351 ◽  
Author(s):  
Waqas Ahmed ◽  
Jamil Ahmed Sheikh ◽  
Abbas Z. Kouzani ◽  
M. A. Parvez Mahmud
Keyword(s):  
Energy Source ◽  
Energy Demand ◽  
Meteorological Data ◽  
Ghg Emissions ◽  
Annual Average ◽  
Ghg Mitigation ◽  
Positive Role ◽  
Initial Cost

End energy user is dependent on fossil fuel-based main-grid and contributes toward greenhouse gasses (GHG) emissions. Changing its energy source will change the dynamics of the power plant, contribution towards GHG production. This case study aims to highlight the minute but positive role of a single end energy user, invisible to the main grid in GHG mitigations through photovoltaic energy source, selected among Pakistan’s top 10 most populous cities as per census 2017. Quetta is a selected city in Pakistan as the best fit location based on annual average daily solar radiations (AADSR) data retrieved from National Aeronautics and Space Administration (NASA) meteorological data. Helioscope software is used to select −15° tilt and 180° azimuthal angles, which further increased Quetta’s AADSR value from 5.54 kWh/m2/d to 5.93 kWh/m2/d. For research significance, a realistic approach is undertaken by proper selection of solar panel type based on Quetta’s annual average temperature, load categorization, user selection and inputs from a solar energy expert. Finally, initial cost, investment and GHG mitigation analysis are carried out in RETScreen Expert software, which validates the minute but the prominent role of a single, end energy user by mitigating 122 tons of CO2 in 25-year project life span. Further, the proposed project favors end-user financially by recovering its $4501 initial cost in less than four years by effectively meeting its energy demand and saving $1195 per annum.

scholarly journals Lifecycle Assessment of Biomass Supply Chain with the Assistance of Agent-Based Modelling

2020 ◽  
Vol 12 (5) ◽  
pp. 1964 ◽  
Author(s):  
Raghu KC ◽  
Mika Aalto ◽  
Olli-Jussi Korpinen ◽  
Tapio Ranta ◽  
Svetlana Proskurina
Keyword(s):  
Supply Chain ◽  
Forest Biomass ◽  
Ghg Emissions ◽  
Fuel Mixture ◽  
Lifecycle Assessment ◽  
Local Conditions ◽  
Agent Based ◽  
Biomass Supply ◽  
Biomass Logistics ◽  
Temporal Aspects

Even though biomass is characterised as renewable energy, it produces anthropogenic greenhouse gas (GHG) emissions, especially from biomass logistics. Lifecycle assessment (LCA) is used as a tool to quantify the GHG emissions from logistics but in the past the majority of LCAs have been steady-state and linear, when in reality, non-linear and temporal aspects (such as weather conditions, seasonal biomass demand, storage capacity, etc.) also have an important role to play. Thus, the objective of this paper was to optimise the environmental sustainability of forest biomass logistics (in terms of GHG emissions) by introducing the dynamic aspects of the supply chain and using the geographical information system (GIS) and agent-based modelling (ABM). The use of the GIS and ABM adds local conditions to the assessment in order to make the study more relevant. In this study, GIS was used to investigate biomass availability, biomass supply points and the road network around a large-scale combined heat and power plant in Naantali, Finland. Furthermore, the temporal aspects of the supply chain (e.g., seasonal biomass demand and storage capacity) were added using ABM to make the assessment dynamic. Based on the outcomes of the GIS and ABM, a gate-to-gate LCA of the forest biomass supply chain was conducted in order to calculate GHG emissions. In addition to the domestic biomass, we added imported biomass from Riga, Latvia to the fuel mixture in order to investigate the effect of sea transportation on overall GHG emissions. Finally, as a sensitivity check, we studied the real-time measurement of biomass quality and its potential impact on overall logistical GHG emissions. According to the results, biomass logistics incurred GHG emissions ranging from 2.72 to 3.46 kg CO2-eq per MWh, depending on the type of biomass and its origin. On the other hand, having 7% imported biomass in the fuel mixture resulted in a 13% increase in GHG emissions. Finally, the real-time monitoring of biomass quality helped save 2% of the GHG emissions from the overall supply chain. The incorporation of the GIS and ABM helped in assessing the environmental impacts of the forest biomass supply chain in local conditions, and the combined approach looks promising for developing LCAs that are inclusive of the temporal aspects of the supply chain for any specific location.

scholarly journals Experimental Data and Simulations of Performance and Thermal Comfort in a Typical Mediterranean House

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3311
Author(s):  
Víctor Pérez-Andreu ◽  
Carolina Aparicio-Fernández ◽  
José-Luis Vivancos ◽  
Javier Cárcel-Carrasco
Keyword(s):  
Energy Efficiency ◽  
Thermal Comfort ◽  
Energy Demand ◽  
Natural Ventilation ◽  
Thermal Characterization ◽  
Energy Performance ◽  
Building Stock ◽  
Energy Demands ◽  
Dwelling House ◽  
Account Standard

The number of buildings renovated following the introduction of European energy-efficiency policy represents a small number of buildings in Spain. So, the main Spanish building stock needs an urgent energy renovation. Using passive strategies is essential, and thermal characterization and predictive tests of the energy-efficiency improvements achieving acceptable levels of comfort for their users are urgently necessary. This study analyzes the energy performance and thermal comfort of the users in a typical Mediterranean dwelling house. A transient simulation has been used to acquire the scope of Spanish standards for its energy rehabilitation, taking into account standard comfort conditions. The work is based on thermal monitoring of the building and a numerical validated model developed in TRNSYS. Energy demands for different models have been calculated considering different passive constructive measures combined with real wind site conditions and the behavior of users related to natural ventilation. This methodology has given us the necessary information to decide the best solution in relation to energy demand and facility of implementation. The thermal comfort for different models is not directly related to energy demand and has allowed checking when and where the measures need to be done.

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