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Full-Text Articles in Engineering
Electric Vehicle Grid Experiments And Analysis, Florida Solar Energy Center, Richard Raustad
Electric Vehicle Grid Experiments And Analysis, Florida Solar Energy Center, Richard Raustad
FSEC Energy Research Center®
This project developed a low cost building energy management system (EMS) and conducted vehicle-to-grid (V2G) experiments on a commercial office building. The V2G effort included the installation and operation of a Princeton Power System CA-30 bi-directional power system. These experiments targeted the reduction of utility peak electrical demand for a commercial office building. In each case, total building peak demand was managed through a computer algorithm to limit the charging rate of electric vehicles or used the vehicle's on-board traction battery as a storage device to minimize peak electrical loads.
Electric Vehicle Interaction At The Electrical Circuit Level, Florida Solar Energy Center, Shawyun Sariri
Electric Vehicle Interaction At The Electrical Circuit Level, Florida Solar Energy Center, Shawyun Sariri
FSEC Energy Research Center®
A large growth in energy demand has increased renewable energy penetration into existing power grid infrastructures, as well as spurring increased research into demand response programs. But before implementing an efficient demand response program, it is first necessary to understand the power usage behaviors of a consumer. This paper presents a real-time data acquisition system for the collection and storage of power data that will allow the study of demand response in an urban area, which can be applied to the efficient use of electric vehicle supply equipment (EVSE). Demand response programs are an ideal alternative to costly energy storage …
Ev Workplace Charging Energy Use And Cost Case Study, Florida Solar Energy Center, Richard Raustad
Ev Workplace Charging Energy Use And Cost Case Study, Florida Solar Energy Center, Richard Raustad
FSEC Energy Research Center®
Efforts to increase the availability of plug-in electric vehicle (PEV) charging stations have focused on expanding public charging stations, promoting charging at the workplace and using charging stations as a shopping incentive for retail stores. This report examines the costs and energy uses to provide the charging service. Rapidly charging a PEV requires expensive electric equipment and can lead to high operating costs due to electrical demand charges. This project presents results from a detailed case study for 5 PEV chargers where the charger electricity costs are a part of a facilities electric bill. Also presented are options for minimizing …
Developing G-Rim And Participants Tests For Specific Commercial Programs For The Florida Natural Gas Association, Florida Solar Energy Center, Richard Raustad
Developing G-Rim And Participants Tests For Specific Commercial Programs For The Florida Natural Gas Association, Florida Solar Energy Center, Richard Raustad
FSEC Energy Research Center®
The Florida Solar Energy Center performed an economic assessment for 7 common commercial appliances. This assessment calculates the gas rate impact measure and participants test score for selecting natural gas equipment over comparable electric equipment over a 20-year period. This type of analysis provides an indication whether or not the specific appliance program favors the end use customer and/or the utility company as economic beneficiaries. Given the project assumptions, all natural gas equipment types, with the exception of the pool heat pump water heater, show measures greater than 1 indicating that the natural gas appliance will have lower life-cycle costs …
Executive Summary: Evaluation Of The Impact Of Vacant Home Space Conditioning Strategies On Summer Relative Humidity, Energy, And Peak Load; Phase Ii, Florida Solar Energy Center, James Cummings
Executive Summary: Evaluation Of The Impact Of Vacant Home Space Conditioning Strategies On Summer Relative Humidity, Energy, And Peak Load; Phase Ii, Florida Solar Energy Center, James Cummings
FSEC Energy Research Center®
The Vacant Home Space Conditioning Study was sponsored by Florida Power & Light (FPL) as part of its Conservation R&D Program and carried out by the Florida Solar Energy Center (FSEC). In the US, about one in four retiree "snowbirds" make Florida their destination to escape the northern cold. Snowbird residents number more than 900,000 in Florida during the winter. In some counties of FPL's territory these seasonal residents compose up to 15% of the population (Shih, 1981). This pattern of seasonal occupancy creates a need for space conditioning guidelines for vacant homes to avoid mold problems while minimizing both …
How Much Energy Are We Using? Potential Of Residential Energy Demand Feedback Devices, Florida Solar Energy Center, Danny Parker
How Much Energy Are We Using? Potential Of Residential Energy Demand Feedback Devices, Florida Solar Energy Center, Danny Parker
FSEC Energy Research Center®
Past studies of providing instantaneous feedback on household electrical demand show promise to reduce energy consumption by 10-15%. This paper surveys past research and describes a pilot evaluation of two low cost monitoring systems in case study homes. We also develop an evaluation protocol to use such devices to determine the relative energy intensity of various energy end uses. An identified advantage of the technology is that it provides better guidance on profitable areas to reduce household electrical demand-many of which are often unexpected. Moreover, our case studies showed that use of targeted power strips and occupancy-based controls can significantly …
Measured Field Performance And Energy Savings Of Occupancy Sensors: Three Case Studies, Florida Solar Energy Center, David Floyd
Measured Field Performance And Energy Savings Of Occupancy Sensors: Three Case Studies, Florida Solar Energy Center, David Floyd
FSEC Energy Research Center®
Occupancy sensors have the potential to significantly reduce energy use by switching off electrical loads when a normally occupied area is vacated. While occupancy sensors can be used to control a variety of load types, their most popular use has been to control lighting in commercial buildings. Manufacturers claim savings of 15% to 85%, although there is little published research to support the magnitude or timing of reductions. Energy savings and performance are directly related to the total wattage of the load being controlled, effectiveness of the previous control method, occupancy patterns within the space and proper sensor commissioning. In …
Measured Electricity Savings Of Refrigerator Replacement: Case Study And Analysis, Florida Solar Energy Center, Ted Stedman
Measured Electricity Savings Of Refrigerator Replacement: Case Study And Analysis, Florida Solar Energy Center, Ted Stedman
FSEC Energy Research Center®
There are approximately seven million refrigerator-freezers in the State of Florida. The average demand of these units is at least 1,000 MW. The average life of a residential refrigerator is approximately 20 years (U.S. DOE, 1989). At least 25% of Florida's existing stock are old inefficient units built before the advent of recent appliance efficiency standards. The least efficient are existing models of which approximately 5% of the stock is replaced each year. This represents a significant opportunity for efficiency improvement since recently established standards will greatly improve refrigerator efficiency by 1993 (NAECA, 1987). A number of studies have identified …