The Experts below are selected from a list of 141249 Experts worldwide ranked by ideXlab platform
Josep M. Guerrero - One of the best experts on this subject based on the ideXlab platform.
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Grid-Tied Photovoltaic and Battery Storage Systems with Malaysian Electricity Tariff—A Review on Maximum Demand Shaving
Energies, 2017Co-Authors: Gopinath Subramani, Vigna K. Ramachandaramurthy, Sanjeevikumar Padmanaban, Lucian Mihet-popa, Frede Blaabjerg, Josep M. GuerreroAbstract:Under the current energy sector framework of electricity tariff in Malaysia, commercial and industrial customers are required to pay the maximum demand (MD) charge apart from the net consumption charges every month. The maximum demand charge will contribute up to 20% of the electricity bill, and will hence result in commercial and industrial customers focussing on alternative energy supply to minimize the billing cost. This paper aims to review the technical assessment methods of a grid-connected solar photovoltaic (PV)—battery storage system—with respect to maximum demand shaving. An effective battery storage system can provide the extra energy needed during the peak energy consumption periods, as well as when renewable energy (RE) sources go offline. Based on the reviews, maximum demand shaving with good Return-of-Investment (ROI) can be achieved by considering the actual load profile, technical, and economic aspects of the solar PV-battery system and the Malaysian electricity tariff for commercial and industrial customers.
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Grid-Tied Photovoltaic and Battery Storage Systems with Malaysian Electricity Tariff - A Review on Maximum Demand Shaving
Energies, 2017Co-Authors: Gopinath Subramani, Vigna K. Ramachandaramurthy, Sanjeevikumar Padmanaban, Lucian Mihet-popa, Frede Blaabjerg, Josep M. GuerreroAbstract:Under the current energy sector framework of electricity tariff in Malaysia, commercial and industrial customers are required to pay the maximum demand (MD) charge apart from the net consumption charges every month. The maximum demand charge will contribute up to 20% of the electricity bill, and will hence result in commercial and industrial customers focussing on alternative energy supply to minimize the billing cost. This paper aims to review the technical assessment methods of a grid-connected solar photovoltaic (PV)—battery storage system—with respect to maximum demand shaving. An effective battery storage system can provide the extra energy needed during the peak energy consumption periods, as well as when renewable energy (RE) sources go offline. Based on the reviews, maximum demand shaving with good Return-of-Investment (ROI) can be achieved by considering the actual load profile, technical, and economic aspects of the solar PV-battery system and the Malaysian electricity tariff for commercial and industrial customers.
David Schramm - One of the best experts on this subject based on the ideXlab platform.
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the Return of Investment of hospital based surgical quality improvement programs in reducing surgical site infection at a canadian tertiary care hospital
Infection Control and Hospital Epidemiology, 2019Co-Authors: Sasha Van Katwyk, Kednapa Thavorn, Doug Coyle, Husein Moloo, Alan J Forster, Tim Jackson, David SchrammAbstract:Objective We performed a Return-on-Investment analysis comparing the Investment in surgical site infection (SSI) prevention programs in a hospital setting to the savings from averted SSI cases. Design A retrospective case costing study using aggregated patient data to determine the incidence and costs of SSI infection in surgical departments over time. We calculated Return on Investment to the hospital and conducted several sensitivity and scenario analyses. Setting Data were compiled for the Ottawa Hospital (TOH), a Canadian tertiary-care teaching institution. Patients We used aggregated records for all hospital patients who underwent surgical procedures between April 2010 and January 2015. Intervention We estimated the potential cost savings of the hospital’s surgical quality improvement program, namely the Surgeons National Surgical Quality Improvement Program (NSQIP) and the Comprehensive Unit-based Safety Program (CUSP). Results From 2010 to 2016, TOH invested C$826,882 (US$624,384) in surgical quality improvement programs targeting SSI incidence and accrued C$1,885,110 (US$1,423,460) in cumulative savings from averted SSI cases, generating a Return of $2.28 (US$3.02) per dollar invested (95% confidence interval [CI], −0.67 to 7.37). The study findings are sensitive to the estimated cost to the hospital per SSI case and the rate reduction attributable to the prevention program. Conclusions The NSQIP and CUSP have produced a positive Return on Investment at TOH; however, the result rests on several assumptions. This positive Return on Investment is expected to continue if the hospital can continue to reduce SSI incidence at least 0.25% annually without new Investments. Findings from this study highlight the need for continuous program evaluation of the quality improvement initiatives.
Jo Vinneras - One of the best experts on this subject based on the ideXlab platform.
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vermicomposting as manure management strategy for urban small holder animal farms kampala case study
Waste Management, 2015Co-Authors: Cecilia Lalande, Allan Joh Komakech, Jo VinnerasAbstract:Inadequate organic waste management can contribute to the spread of diseases and have negative impacts on the environment. Vermicomposting organic waste could have dual beneficial effects by generating an economically viable animal feed protein in the form of worm biomass, while alleviating the negative effects of poor organic waste management. In this study, a low-maintenance vermicomposting system was evaluated as manure and food waste management system for small-holder farmers. A vermicomposting system using the earthworm species Eudrilus eugeniae and treating cow manure and food waste was set up in Kampala, Uganda, and monitored for 172days. The material degradation and protein production rates were evaluated after 63days and at the end of the experiment. The material reduction was 45.9% and the waste-to-biomass conversion rate was 3.5% in the vermicomposting process on a total solids basis. A possible increase in the conversion rate could be achieved by increasing the frequency of worm harvesting. Vermicomposting was found to be a viable manure management method in small-scale urban animal agriculture; the Return of Investment was calculated to be 280% for treating the manure of a 450kg cow. The vermicompost was not sanitised, although hygiene quality could be improved by introducing a post-stabilisation step in which no fresh material is added. The value of the animal feed protein generated in the process can act as an incentive to improve current manure management strategies.
Gopinath Subramani - One of the best experts on this subject based on the ideXlab platform.
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Grid-Tied Photovoltaic and Battery Storage Systems with Malaysian Electricity Tariff—A Review on Maximum Demand Shaving
Energies, 2017Co-Authors: Gopinath Subramani, Vigna K. Ramachandaramurthy, Sanjeevikumar Padmanaban, Lucian Mihet-popa, Frede Blaabjerg, Josep M. GuerreroAbstract:Under the current energy sector framework of electricity tariff in Malaysia, commercial and industrial customers are required to pay the maximum demand (MD) charge apart from the net consumption charges every month. The maximum demand charge will contribute up to 20% of the electricity bill, and will hence result in commercial and industrial customers focussing on alternative energy supply to minimize the billing cost. This paper aims to review the technical assessment methods of a grid-connected solar photovoltaic (PV)—battery storage system—with respect to maximum demand shaving. An effective battery storage system can provide the extra energy needed during the peak energy consumption periods, as well as when renewable energy (RE) sources go offline. Based on the reviews, maximum demand shaving with good Return-of-Investment (ROI) can be achieved by considering the actual load profile, technical, and economic aspects of the solar PV-battery system and the Malaysian electricity tariff for commercial and industrial customers.
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Grid-Tied Photovoltaic and Battery Storage Systems with Malaysian Electricity Tariff - A Review on Maximum Demand Shaving
Energies, 2017Co-Authors: Gopinath Subramani, Vigna K. Ramachandaramurthy, Sanjeevikumar Padmanaban, Lucian Mihet-popa, Frede Blaabjerg, Josep M. GuerreroAbstract:Under the current energy sector framework of electricity tariff in Malaysia, commercial and industrial customers are required to pay the maximum demand (MD) charge apart from the net consumption charges every month. The maximum demand charge will contribute up to 20% of the electricity bill, and will hence result in commercial and industrial customers focussing on alternative energy supply to minimize the billing cost. This paper aims to review the technical assessment methods of a grid-connected solar photovoltaic (PV)—battery storage system—with respect to maximum demand shaving. An effective battery storage system can provide the extra energy needed during the peak energy consumption periods, as well as when renewable energy (RE) sources go offline. Based on the reviews, maximum demand shaving with good Return-of-Investment (ROI) can be achieved by considering the actual load profile, technical, and economic aspects of the solar PV-battery system and the Malaysian electricity tariff for commercial and industrial customers.
Allan Joh Komakech - One of the best experts on this subject based on the ideXlab platform.
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vermicomposting as manure management strategy for urban small holder animal farms kampala case study
Waste Management, 2015Co-Authors: Cecilia Lalande, Allan Joh Komakech, Jo VinnerasAbstract:Inadequate organic waste management can contribute to the spread of diseases and have negative impacts on the environment. Vermicomposting organic waste could have dual beneficial effects by generating an economically viable animal feed protein in the form of worm biomass, while alleviating the negative effects of poor organic waste management. In this study, a low-maintenance vermicomposting system was evaluated as manure and food waste management system for small-holder farmers. A vermicomposting system using the earthworm species Eudrilus eugeniae and treating cow manure and food waste was set up in Kampala, Uganda, and monitored for 172days. The material degradation and protein production rates were evaluated after 63days and at the end of the experiment. The material reduction was 45.9% and the waste-to-biomass conversion rate was 3.5% in the vermicomposting process on a total solids basis. A possible increase in the conversion rate could be achieved by increasing the frequency of worm harvesting. Vermicomposting was found to be a viable manure management method in small-scale urban animal agriculture; the Return of Investment was calculated to be 280% for treating the manure of a 450kg cow. The vermicompost was not sanitised, although hygiene quality could be improved by introducing a post-stabilisation step in which no fresh material is added. The value of the animal feed protein generated in the process can act as an incentive to improve current manure management strategies.