This page has only limited features, please log in for full access.
This study investigates the greenhouse gas (GHG) emissions from diesel- and liquefied natural gas-fueled (LNG) heavy-duty vehicles (HDVs) in the context of Canada and the province of British Columbia (BC) from 2014 to 2050. HDVs accounted for 18% and 11% of the 2014 GHG emissions from the transportation sector in Canada and BC, respectively. Different scenarios are analyzed using the GHGenius model and recent emissions measurements from LNG HDVs. The low emissions scenario of 1 gCH4/kgLNG indicates that LNG HDVs could reduce GHG emissions by 22% and 30% in Canada and BC, respectively. Also, the analysis shows that Canada’s and BC’s well-to-wheels (WTW) methane emissions should be maintained below 13 and 18 gCH4/kgLNG to produce less GHG emissions from LNG HDVs than their diesel counterparts. If WTW methane emissions are maintained at the current estimated rate of 26 gCH4/kgLNG, replacing diesel with LNG in HDVs would change GHG emissions from +1.7% to +24% for Canada, and from −8% to +16% for BC by 2050. Finally, our study indicates that even methane emissions of 1 gCH4/kgLNG would not be enough to decrease GHG emissions of HDVs by 80% below 2005 levels by 2050 as is the target set by the Government of Canada and BC. However, LNG HDVs do reduce nitrogen oxides and particulate matter emissions. Policy makers could support LNG HDVs for immediate reductions of nitrogen oxides and particulate matter, but should support methane emissions measurements and control campaigns, and other alternative fuels to meet the 80% GHG emission reduction target by 2050.
Amir Sharafian; S. Rasoul Asaee; Omar E. Herrera; Walter Mérida. Policy implications of liquefied natural gas use in heavy-duty vehicles: Examples in Canada and British Columbia. Transportation Research Part D: Transport and Environment 2019, 69, 123 -140.
AMA StyleAmir Sharafian, S. Rasoul Asaee, Omar E. Herrera, Walter Mérida. Policy implications of liquefied natural gas use in heavy-duty vehicles: Examples in Canada and British Columbia. Transportation Research Part D: Transport and Environment. 2019; 69 ():123-140.
Chicago/Turabian StyleAmir Sharafian; S. Rasoul Asaee; Omar E. Herrera; Walter Mérida. 2019. "Policy implications of liquefied natural gas use in heavy-duty vehicles: Examples in Canada and British Columbia." Transportation Research Part D: Transport and Environment 69, no. : 123-140.
Canada has numerous climatic and geographical regions and the Canadian housing stock (CHS) is diversified in terms of vintage, geometry, construction materials, envelope, occupancy, energy sources and heating, ventilation and air conditioning system and equipment. Therefore, strategies to achieve net zero energy (NZE) status with the current stock of houses need to be devised considering the unique characteristics of the housing stock, the economic conditions and energy mix available in each region. Identifying and assessing pathways for converting existing houses to NZE buildings at the housing stock level is a complex and multifaceted problem and requires extensive analysis on the impact of energy efficiency and renewable/alternative energy technology retrofits on the energy use and GHG emissions of households. A techno-economic analysis of retrofitting renewable/alternative energy technologies in the CHS to reduce energy consumption and GHG emissions was conducted to develop strategies to achieve or approach NZE status for Canadian houses. The results indicate that substantial energy savings and GHG emission reductions are techno-economically feasible for the CHS through careful selection of retrofit options. While achieving large scale conversion of existing houses to NZEB is not feasible, approaching NZE status is a realistic goal for a large percentage of Canadian houses.
S. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison. Development and analysis of strategies to facilitate the conversion of Canadian houses into net zero energy buildings. Energy Policy 2018, 126, 118 -130.
AMA StyleS. Rasoul Asaee, V. Ismet Ugursal, Ian Beausoleil-Morrison. Development and analysis of strategies to facilitate the conversion of Canadian houses into net zero energy buildings. Energy Policy. 2018; 126 ():118-130.
Chicago/Turabian StyleS. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison. 2018. "Development and analysis of strategies to facilitate the conversion of Canadian houses into net zero energy buildings." Energy Policy 126, no. : 118-130.
The residential sector is responsible for 11.7% of global greenhouse gas (GHG) emissions. Space and domestic hot water (DHW) heating accounts for about 80% of the energy consumption of households in cold-climate regions. This study investigates the status of the housing stock in a set of cold-climate countries (i.e., Northern Europe and Canada) with the goal of identifying the barriers to achieving net zero emission (NZEm) status in the residential sector. Several parameters are analyzed, including vintage, energy mixture for onsite heating and offsite electricity generation, energy use, and GHG emissions intensities. Potential scenarios of energy supply and their impact on energy consumption and GHG emissions of the residential sector are discussed. Results show that the existing houses are not energy efficient, and it will be a challenge to reduce the GHG emissions of the residential sector. The energy outlooks indicate that the carbon intensity of grid electricity would not be zero due to reliance on fossil fuels. Therefore, an existing household could not achieve NZEm status by solely using grid electricity. Deep energy retrofits, renewable energy technologies, and reducing the carbon intensity of energy sources are measures to be implemented to achieve NZEm status for the residential sector.
S. Rasoul Asaee; Amir Sharafian; Omar E. Herrera; Paul Blomerus; Walter Mérida. Housing stock in cold-climate countries: Conversion challenges for net zero emission buildings. Applied Energy 2018, 217, 88 -100.
AMA StyleS. Rasoul Asaee, Amir Sharafian, Omar E. Herrera, Paul Blomerus, Walter Mérida. Housing stock in cold-climate countries: Conversion challenges for net zero emission buildings. Applied Energy. 2018; 217 ():88-100.
Chicago/Turabian StyleS. Rasoul Asaee; Amir Sharafian; Omar E. Herrera; Paul Blomerus; Walter Mérida. 2018. "Housing stock in cold-climate countries: Conversion challenges for net zero emission buildings." Applied Energy 217, no. : 88-100.
S. Rasoul Asaee; V. Ismet Ugursal. Potential to reduce energy consumption and GHG emissions by using renewable energy technologies in the conversion of existing houses into net-zero and near net-zero energy buildings. Proceedings of the Fourth International Conference on Animal-Computer Interaction 2018, 72 .
AMA StyleS. Rasoul Asaee, V. Ismet Ugursal. Potential to reduce energy consumption and GHG emissions by using renewable energy technologies in the conversion of existing houses into net-zero and near net-zero energy buildings. Proceedings of the Fourth International Conference on Animal-Computer Interaction. 2018; ():72.
Chicago/Turabian StyleS. Rasoul Asaee; V. Ismet Ugursal. 2018. "Potential to reduce energy consumption and GHG emissions by using renewable energy technologies in the conversion of existing houses into net-zero and near net-zero energy buildings." Proceedings of the Fourth International Conference on Animal-Computer Interaction , no. : 72.
S. Rasoul Asaee; Sara Nikoofard; V. Ismet Ugursal; Ian Beausoleil-Morrison. Techno-economic assessment of photovoltaic (PV) and building integrated photovoltaic/thermal (BIPV/T) system retrofits in the Canadian housing stock. Energy and Buildings 2017, 152, 667 -679.
AMA StyleS. Rasoul Asaee, Sara Nikoofard, V. Ismet Ugursal, Ian Beausoleil-Morrison. Techno-economic assessment of photovoltaic (PV) and building integrated photovoltaic/thermal (BIPV/T) system retrofits in the Canadian housing stock. Energy and Buildings. 2017; 152 ():667-679.
Chicago/Turabian StyleS. Rasoul Asaee; Sara Nikoofard; V. Ismet Ugursal; Ian Beausoleil-Morrison. 2017. "Techno-economic assessment of photovoltaic (PV) and building integrated photovoltaic/thermal (BIPV/T) system retrofits in the Canadian housing stock." Energy and Buildings 152, no. : 667-679.
S. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison. Techno-economic assessment of solar assisted heat pump system retrofit in the Canadian housing stock. Applied Energy 2017, 190, 439 -452.
AMA StyleS. Rasoul Asaee, V. Ismet Ugursal, Ian Beausoleil-Morrison. Techno-economic assessment of solar assisted heat pump system retrofit in the Canadian housing stock. Applied Energy. 2017; 190 ():439-452.
Chicago/Turabian StyleS. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison. 2017. "Techno-economic assessment of solar assisted heat pump system retrofit in the Canadian housing stock." Applied Energy 190, no. : 439-452.
S. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison. Techno-economic feasibility evaluation of air to water heat pump retrofit in the Canadian housing stock. Applied Thermal Engineering 2017, 111, 936 -949.
AMA StyleS. Rasoul Asaee, V. Ismet Ugursal, Ian Beausoleil-Morrison. Techno-economic feasibility evaluation of air to water heat pump retrofit in the Canadian housing stock. Applied Thermal Engineering. 2017; 111 ():936-949.
Chicago/Turabian StyleS. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison. 2017. "Techno-economic feasibility evaluation of air to water heat pump retrofit in the Canadian housing stock." Applied Thermal Engineering 111, no. : 936-949.
Techno-economic feasibility of retrofitting solar combisystems to houses in the Canadian housing stock (CHS) is investigated using the Canadian Hybrid Residential End-Use Energy and Emissions Model (CHREM). Solar combisystem architecture and sizing is based on the systems and guidelines provided by the International Energy Agency (IEA) Solar Heating and Cooling (SHC) Programme Task 26. Houses with sufficient roof area facing south, south-east or south-west, and a basement or mechanical room to contain solar combisystem components, including the thermal storage tank, auxiliary boiler and pumps, are considered eligible to receive the retrofit. A hydronic heat delivery system is used to supply heat to the thermal zones. Solar collector area is sized to match the nominal capacity of the existing heating system in each house. Reductions in energy consumption and greenhouse gas (GHG) emissions are evaluated. Results show that close to 40% of houses in the CHS are eligible for solar combisystem retrofit, and if all eligible houses are retrofitted, the annual energy consumption and GHG emissions of the CHS would be reduced by about 19%. The tolerable capital cost varies significantly amongst provinces, and governmental subsidies or incentive programs may be required to promote solar combisystems in some provinces.
S. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison. Techno-economic study of solar combisystem retrofit in the Canadian housing stock. Solar Energy 2016, 125, 426 -443.
AMA StyleS. Rasoul Asaee, V. Ismet Ugursal, Ian Beausoleil-Morrison. Techno-economic study of solar combisystem retrofit in the Canadian housing stock. Solar Energy. 2016; 125 ():426-443.
Chicago/Turabian StyleS. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison. 2016. "Techno-economic study of solar combisystem retrofit in the Canadian housing stock." Solar Energy 125, no. : 426-443.
S. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison. An investigation of the techno-economic impact of internal combustion engine based cogeneration systems on the energy requirements and greenhouse gas emissions of the Canadian housing stock. Applied Thermal Engineering 2015, 87, 505 -518.
AMA StyleS. Rasoul Asaee, V. Ismet Ugursal, Ian Beausoleil-Morrison. An investigation of the techno-economic impact of internal combustion engine based cogeneration systems on the energy requirements and greenhouse gas emissions of the Canadian housing stock. Applied Thermal Engineering. 2015; 87 ():505-518.
Chicago/Turabian StyleS. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison. 2015. "An investigation of the techno-economic impact of internal combustion engine based cogeneration systems on the energy requirements and greenhouse gas emissions of the Canadian housing stock." Applied Thermal Engineering 87, no. : 505-518.
S. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison. Techno-economic evaluation of internal combustion engine based cogeneration system retrofits in Canadian houses – A preliminary study. Applied Energy 2015, 140, 171 -183.
AMA StyleS. Rasoul Asaee, V. Ismet Ugursal, Ian Beausoleil-Morrison. Techno-economic evaluation of internal combustion engine based cogeneration system retrofits in Canadian houses – A preliminary study. Applied Energy. 2015; 140 ():171-183.
Chicago/Turabian StyleS. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison. 2015. "Techno-economic evaluation of internal combustion engine based cogeneration system retrofits in Canadian houses – A preliminary study." Applied Energy 140, no. : 171-183.
S. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison; Noureddine Ben-Abdallah. Preliminary study for solar combisystem potential in Canadian houses. Applied Energy 2014, 130, 510 -518.
AMA StyleS. Rasoul Asaee, V. Ismet Ugursal, Ian Beausoleil-Morrison, Noureddine Ben-Abdallah. Preliminary study for solar combisystem potential in Canadian houses. Applied Energy. 2014; 130 ():510-518.
Chicago/Turabian StyleS. Rasoul Asaee; V. Ismet Ugursal; Ian Beausoleil-Morrison; Noureddine Ben-Abdallah. 2014. "Preliminary study for solar combisystem potential in Canadian houses." Applied Energy 130, no. : 510-518.
A three-dimensional model is developed to simulate the behavior of a single-channel three-way catalytic converter. The flow regime is assumed to be steady and laminar, and the channel walls are considered as isothermal. A multi-step, global heterogeneous reaction mechanism with 16 reactions and 11 species is used in this investigation to enhance the accuracy of the results. The chemical reactions are assumed to occur only on the reactor walls. The developed model is validated against available experimental data for stoichiometric operating conditions. The effect of the feed temperature on the conversion efficiency of the main pollutant components is studied. The light-off temperature for the stoichiometric A/F is found to be about 530 K for CO, NO and UHC, and 425 K for H2 conversion. The model is also applied to predict the effect of reactor length and inlet mixture space velocity on the conversion efficiency at two different temperatures. By using the same kinetics a well-stirred, unsteady model is also developed to identify the sensitivity of the multi-step kinetic mechanism to the mixture composition. The effect of mole fraction variation of each species on the conversion of other mixture components is investigated.
M. H. Akbari; R. Roohi; S. A. Asaee. Numerical Simulation of a Mini-Channel Three-Way Catalytic Converter. ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B 2010, 181 -191.
AMA StyleM. H. Akbari, R. Roohi, S. A. Asaee. Numerical Simulation of a Mini-Channel Three-Way Catalytic Converter. ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B. 2010; ():181-191.
Chicago/Turabian StyleM. H. Akbari; R. Roohi; S. A. Asaee. 2010. "Numerical Simulation of a Mini-Channel Three-Way Catalytic Converter." ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B , no. : 181-191.
Hydrogen purification through water-gas shift (WGS) is a favored option in fuel processing for hydrogen fuel cells. A three-dimensional single channel model is developed to simulate the behavior of a water-gas shift micro reactor. The flow regime is assumed to be steady and laminar; furthermore, it is presumed that the walls are isothermal. A water-gas shift reaction rate model is utilized to simulate the surface reaction on Pt/TiO2 catalyst. The gas feed composition is taken as the efflux of a typical auto-thermal reforming (ATR) reactor. A parametric study is conducted to investigate the effect of gas feed temperature, gas space velocity and channel length on water-gas shift micro reactor performance. The study resulted in an optimum water-gas shift micro reactor design. It should be noted that a water-gas shift micro reactor is an essential part of a reactor train to remove carbon monoxide from a hydrogen rich mixture. Such a mixture can be used as fuel for a PEM fuel cell in portable devices. The results of these simulations revealed that the optimum reactor consists of a square cross section channel with 100 μm hydraulic diameter, 20 mm length, space velocity of 1000 h−1 and gas feed temperature of 270°C. The carbon monoxide mole fraction in the efflux is in a range suitable for a typical preferential oxidation (PROX) reactor.
M. H. Akbari; S. A. Asaee; R. Roohi. Modeling of a Micro-Channel Water-Gas Shift Reactor. ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B 2010, 1083 -1090.
AMA StyleM. H. Akbari, S. A. Asaee, R. Roohi. Modeling of a Micro-Channel Water-Gas Shift Reactor. ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B. 2010; ():1083-1090.
Chicago/Turabian StyleM. H. Akbari; S. A. Asaee; R. Roohi. 2010. "Modeling of a Micro-Channel Water-Gas Shift Reactor." ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B , no. : 1083-1090.