This paper presents an algorithm developed to predict the offset renewable solar energy can offer... more This paper presents an algorithm developed to predict the offset renewable solar energy can offer to reduce energy requirement of a particular cooling or dehumidification system. The algorithm takes into account location specific parameters such as solar resource availability, cooling demand time series, climatic conditions, component cost and performance parameters. This algorithm is then used to evaluate and compare the techno-economic performances of dehumidification systems driven by different solar collector systems, namely solar thermal and solar electric. The analysis also takes into consideration water generation from ambient moisture as another significant product potentially offsetting total cost. While annual statistical weather data of any location can be analyzed, Sydney and Abu Dhabi were selected as case studies. Compared to moderate climate and higher energy costs in Sydney, Abu Dhabi revealed to be a positive potential for solar cooling investment. The algorithm is ...
ABSTRACT Utilizing the greenhouse gas CO2 as a feedstock in chemical processing could offer alter... more ABSTRACT Utilizing the greenhouse gas CO2 as a feedstock in chemical processing could offer alternative solutions to long-term storage. Large-scale production of light hydrocarbons such as methanol (MeOH) is one of the predominant and sensible schemes for such utilization. This proposal will not only recycle the CO2 gas within methanol synthesis process, but will also reduce the uptake of raw materials such as natural gas (NG) and reduce the greenhouse-gas (GHG) emissions of a comparable stand-alone NG-based methanol synthesis plant.
ABSTRACT A techno-economic analysis has been performed for a coal-fired power plant retrofitted w... more ABSTRACT A techno-economic analysis has been performed for a coal-fired power plant retrofitted with Solvent-based Post-combustion Carbon Capture (PCC) technology which is partially supplied with thermal energy by solar thermal collectors. The plant is compared with a generic PCC plant where all the thermal energy is provided by steam bled from the steam cycle. The individual merits of a suite of solar collector technologies which includes Flat Plate Collectors (FPCs), Compound Parabolic Collectors (CPCs), Linear Fresnel Collectors (LFCs), Evacuated Tube Collectors (ETCs) and Parabolic Trough Collectors (PTCs) to supply thermal energy for the PCC plant have been studied. The plant has been simulated for three different locations in Australia: Sydney, Townsville and Melbourne. The overall system consists of three subsystems: power plant, PCC plant and solar collector field. A base case scenario is studied in which there is no heat integration between the three subsystems and is compared to a system with heat integration. Additionally incentives such as Renewable Energy Certificates (RECs), carbon tax/credits and government subsidies have been added to the economic model and a sensitivity analysis performed for each scenario of incentives for all five solar collector technologies at the three locations. The ETC case performs best amongst solar collectors when the three subsystems have heat integration while PTCs perform best in the case with no heat integration. The best location for the solar-assisted PCC (SPCC) plant is Townsville. It was found that the addition of the solar field reduces the carbon tax in order to make carbon capture and storage viable in comparison with a conventional non-capturing coal fired plant.
This paper presents an algorithm developed to predict the offset renewable solar energy can offer... more This paper presents an algorithm developed to predict the offset renewable solar energy can offer to reduce energy requirement of a particular cooling or dehumidification system. The algorithm takes into account location specific parameters such as solar resource availability, cooling demand time series, climatic conditions, component cost and performance parameters. This algorithm is then used to evaluate and compare the techno-economic performances of dehumidification systems driven by different solar collector systems, namely solar thermal and solar electric. The analysis also takes into consideration water generation from ambient moisture as another significant product potentially offsetting total cost. While annual statistical weather data of any location can be analyzed, Sydney and Abu Dhabi were selected as case studies. Compared to moderate climate and higher energy costs in Sydney, Abu Dhabi revealed to be a positive potential for solar cooling investment. The algorithm is ...
ABSTRACT Utilizing the greenhouse gas CO2 as a feedstock in chemical processing could offer alter... more ABSTRACT Utilizing the greenhouse gas CO2 as a feedstock in chemical processing could offer alternative solutions to long-term storage. Large-scale production of light hydrocarbons such as methanol (MeOH) is one of the predominant and sensible schemes for such utilization. This proposal will not only recycle the CO2 gas within methanol synthesis process, but will also reduce the uptake of raw materials such as natural gas (NG) and reduce the greenhouse-gas (GHG) emissions of a comparable stand-alone NG-based methanol synthesis plant.
ABSTRACT A techno-economic analysis has been performed for a coal-fired power plant retrofitted w... more ABSTRACT A techno-economic analysis has been performed for a coal-fired power plant retrofitted with Solvent-based Post-combustion Carbon Capture (PCC) technology which is partially supplied with thermal energy by solar thermal collectors. The plant is compared with a generic PCC plant where all the thermal energy is provided by steam bled from the steam cycle. The individual merits of a suite of solar collector technologies which includes Flat Plate Collectors (FPCs), Compound Parabolic Collectors (CPCs), Linear Fresnel Collectors (LFCs), Evacuated Tube Collectors (ETCs) and Parabolic Trough Collectors (PTCs) to supply thermal energy for the PCC plant have been studied. The plant has been simulated for three different locations in Australia: Sydney, Townsville and Melbourne. The overall system consists of three subsystems: power plant, PCC plant and solar collector field. A base case scenario is studied in which there is no heat integration between the three subsystems and is compared to a system with heat integration. Additionally incentives such as Renewable Energy Certificates (RECs), carbon tax/credits and government subsidies have been added to the economic model and a sensitivity analysis performed for each scenario of incentives for all five solar collector technologies at the three locations. The ETC case performs best amongst solar collectors when the three subsystems have heat integration while PTCs perform best in the case with no heat integration. The best location for the solar-assisted PCC (SPCC) plant is Townsville. It was found that the addition of the solar field reduces the carbon tax in order to make carbon capture and storage viable in comparison with a conventional non-capturing coal fired plant.
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