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Articles 1 - 30 of 134
Full-Text Articles in Engineering
Investigating Solutions To Wind Washing Issues In 2-Story Florida Homes; Phase 1, Florida Solar Energy Center, Charles Withers, Jr.
Investigating Solutions To Wind Washing Issues In 2-Story Florida Homes; Phase 1, Florida Solar Energy Center, Charles Withers, Jr.
FSEC Energy Research Center®
Wind washing has been identified as a potentially significant issue regarding energy, demand, comfort, and humidity in some two-story Florida homes. In its most common configuration, wind washing occurs when attic spaces over first-floor portions of the home abut the second story, and the floor cavity of the second story is open to that attic space. Wind blowing into attic vents can push hot attic air into the inter-story floor cavity, bypassing the typical thermal boundaries of the building and introducing considerable heat into the house. Wind washing can also occur when there is little or no attic involved, where …
Boundary Layer Data System (Blds) Heating System, John Hauge, Drew Hutcheson, Paul Scott
Boundary Layer Data System (Blds) Heating System, John Hauge, Drew Hutcheson, Paul Scott
Mechanical Engineering
The boundary layer data system (BLDS) is the result of a collaborative effort between Dr. Westphal, a researcher and instructor at Cal Poly, and Northrop Grumman. The BLDS is capable of measuring the boundary layer profile and characteristics of flow over aerodynamic surfaces and is intended for high altitude, high speed use. The instruments inside the BLDS malfunction at the low temperatures present when operating in flight at altitudes above 30,000 ft. To solve this problem, analysis was done on the existing BLDS which determined the heating requirements, around 50 watts, needed to keep the internal temperature within the rated …
Pump Sequencing Optimization, John S. Allan, Kyle J. Nekimken, Spencer B. Weills
Pump Sequencing Optimization, John S. Allan, Kyle J. Nekimken, Spencer B. Weills
Mechanical Engineering
The purpose of this document is to demonstrate the design, production, and testing of optimum pump sequencing logic for variable frequency drive (VFD) pumps in commercial heating ventilating and air conditioning (HVAC) systems. The product will be developed by Pump Efficiency Solutions (PES), which is a group of Cal Poly students working on their senior project. The product is being developed for Trane, an industry leader in large scale HVAC systems. MATLAB™, Microsoft Excel, Pump System Improvement Modeling Tool™ (PSIM), and fluid mechanics hand calculations were used during software development. Next, we converted the program into Trane’s graphical programming language …
Nightcool: Nocturnal Radiation Cooling Concept, Long Term Performance Evaluation, Florida Solar Energy Center, John Sherwin
Nightcool: Nocturnal Radiation Cooling Concept, Long Term Performance Evaluation, Florida Solar Energy Center, John Sherwin
FSEC Energy Research Center®
An experimental evaluation has been conducted on a building-integrated night sky cooling system designed to substantially reduce space cooling needs in homes in North American climates. The system uses a sealed attic covered by a highly conductive metal roof (a roof integrated radiator) which is selectively linked by air flow to the main zone with the attic zone to provide cooling - largely during nighttime hours. Available house mass is used to store sensible cooling. The system's capability for solar dehumidification with minimal electricity input is demonstrated with long-term performance data taken over 2007 - 2009. A year-long study period …
Final Report: Space Coast Clean Cities Coalition Programmatic Support, Florida Solar Energy Center, William Young
Final Report: Space Coast Clean Cities Coalition Programmatic Support, Florida Solar Energy Center, William Young
FSEC Energy Research Center®
This Final Report summarizes the work preformed by the Florida Solar Energy Center for U.S. Department of Energy for the National Clean Cities Program to reduce emissions and energy consumption of transportation vehicles. This report describes the activities and events of Florida Space Coast Clean Cities Coalition encompassing a nine county area in east central Florida. FSEC administers the Coalition and support the Coalition Board of Directors with meetings, workshop, reports, mailing list, membership, activities, questionnaires, fuel pricing, alternative vehicle and infrastructure deployment.
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 …
Developing Natural Gas Cost Escalation Rates For The Associated Gas Distributors Of Florida, Florida Solar Energy Center, Richard Raustad
Developing Natural Gas Cost Escalation Rates For The Associated Gas Distributors Of Florida, Florida Solar Energy Center, Richard Raustad
FSEC Energy Research Center®
The Florida Solar Energy Center (FSEC) created a spreadsheet tool used to calculate the fuel escalation rates for electricity and natural gas for the previous 5-year and 10-year periods. These escalation rates are calculated at the local, State, and national level for both residential and commercial customers. The previous 5-year and 10-year general inflation rate as determined by the U.S. Department of Labor's Bureau of Labor Statistics consumer price index are also included. These calculations are made in accordance with rules established by the Florida Building Commission pursuant to rule 9B-13.0071, Cost Effectiveness of Amendments to Energy Code.
Evaluation Of Alternatives For Florida's 2010 Energy Code Update For Residential Buildings, Florida Solar Energy Center, Philip Fairey
Evaluation Of Alternatives For Florida's 2010 Energy Code Update For Residential Buildings, Florida Solar Energy Center, Philip Fairey
FSEC Energy Research Center®
This report provides results of analysis of the Florida Energy Code (FEC) with respect to requirements of Florida House Bill 7135. The analysis uses Florida's performance-based code compliance software, EnergyGauge® USA, to conduct detailed analysis of H.B 7135 requirements to significantly increase the efficiency of new homes over time. First, results of an analysis of the long-term, year 2019 requirement for a 50% increase in new home energy efficiency are presented. Next, the 2009 edition of the International Energy Conservation Code (IECC) is analyzed with respect to the H.B. 7135 dual requirements that the 2009 IECC become the foundation code …
Clean Cities Annual Operating Plan 2009: Florida Space Coast Clean Cities Coalition, Florida Solar Energy Center, William Young
Clean Cities Annual Operating Plan 2009: Florida Space Coast Clean Cities Coalition, Florida Solar Energy Center, William Young
FSEC Energy Research Center®
In March, 1997, the Florida Solar Energy Center (FSEC) joined the U.S. Department of Energy (DOE) Clean Cities program to form the Florida Space Coast Clean Cities Coalition in East Central Florida. Space Coast Coalition now consists of 10 counties, as the State is divided into eight Clean Cities regions. Florida Solar Energy Center is located in Cocoa in the approximate center of the coalition area. On October 1, 1999, the expanded Florida Space Coast Clean Cities Coalition was designated and authorized as the 75th Clean Cities Coalition. The Florida Space Coast Clean Cities Coalition is a 501-3c non-profit corporation …
Hysteresis And Reaction Characterization Of Methane Catalytic Partial Oxidation On Rhodium Catalyst, Wei-Hsin Chen
Hysteresis And Reaction Characterization Of Methane Catalytic Partial Oxidation On Rhodium Catalyst, Wei-Hsin Chen
Wei-Hsin Chen
No abstract provided.
An Evaluation On Rice Husks And Pulverized Coal Blends Using A Drop Tube Furnace And A Thermogravimetric Analyzer For Application To A Blast Furnace, Wei-Hsin Chen
Wei-Hsin Chen
No abstract provided.
Rayleigh Flow Of Two-Phase Nitrous Oxide As A Hybrid Rocket Nozzle Coolant, Lauren May Nelson
Rayleigh Flow Of Two-Phase Nitrous Oxide As A Hybrid Rocket Nozzle Coolant, Lauren May Nelson
Master's Theses
The Mechanical Engineering Department at California Polytechnic State University in San Luis Obispo currently maintains a lab-scale hybrid rocket motor for which nitrous oxide is utilized as the oxidizer in the combustion system. Because of its availability, the same two-phase (gas and liquid) nitrous oxide that is used in the combustion system is also routed around the throat of the hybrid rocket’s converging-diverging nozzle as a coolant. While this coolant system has proven effective empirically in previous tests, the physics behind the flow of the two-phase mixture is largely unexplained. This thesis provides a method for predicting some of its …
Preliminary Modelling Results For An Otto Cycle/Stirling Cycle Hybrid-Engine-Based Power Generation System, Barry Cullen, Jim Mcgovern, Michel Feidt, Stoian Petrescu
Preliminary Modelling Results For An Otto Cycle/Stirling Cycle Hybrid-Engine-Based Power Generation System, Barry Cullen, Jim Mcgovern, Michel Feidt, Stoian Petrescu
Conference Papers
This paper presents preliminary data and results for a system mathematical model for a proposed Otto Cycle / Stirling Cycle hybrid-engine-based power generation system. The system is a combined cycle system with the Stirling cycle machine operating as a bottoming cycle on the Otto cycle exhaust. The application considered is that of a stationary power generation scenario wherein the Stirling cycle engine operates as a waste heat recovery device on the exhaust stream of the Otto cycle engine. This paper is primarily concerned with the development of a model for a suitable Stirling cycle engine capable of running on the …
Development Of A Theoretical Decoupled Stirling Cycle Engine, Barry Cullen, Jim Mcgovern
Development Of A Theoretical Decoupled Stirling Cycle Engine, Barry Cullen, Jim Mcgovern
Conference Papers
The Stirling cycle engine is gaining increasing attention in the current energy market as a clean, quiet and versatile prime mover for use in such situations as solar thermal generation, micro cogeneration and other micro distributed generation situations. A theoretical Stirling cycle engine model is developed. Using a theoretical decoupled engine configuration in which working space swept volume, volume variation, phase angle and dead space ratio are controlled via a black-box electronic controller, a model is developed that is to be used as a tool for analysis of the ideal Stirling cycle engine and the limits on its real world …
Comparison Of The Energygauge Usa And Beopt Building Energy Simulation Programs, Florida Solar Energy Center, Danny Parker
Comparison Of The Energygauge Usa And Beopt Building Energy Simulation Programs, Florida Solar Energy Center, Danny Parker
FSEC Energy Research Center®
Two hourly energy simulation software, BEopt and Energy Gauge USA, were compared to ensure accuracy and evaluate agreement on the impact of various energy efficiency improvements. Within the Building America program, these software aid design teams working toward the U.S. Department of Energy's goal to make Zero Energy Homes economically viable by 2025. Builders use the software to achieve the extensive energy savings (70%-80%) from various measures before adding solar electric power generation. The study found that in general, BEopt and EnergyGauge USA agree fairly well on the impact of energy efficiency improvements, while identifying several discrepancies that need further …
Geographic Variation In Potential Of Residential Solar Hot Water System Performance In The United States, Florida Solar Energy Center, Camilo Gil
Geographic Variation In Potential Of Residential Solar Hot Water System Performance In The United States, Florida Solar Energy Center, Camilo Gil
FSEC Energy Research Center®
This paper describes an assessment of residential solar water heater performance around the continental United States. We performed annual simulations using an hourly simulation model (EGUSA) for 212 TMY3 weather locations around the nation. The annual simulations show how standard hot water energy use for electric and gas systems vary geographically (kWh and therms) as well as the potential energy savings from solar water heaters. A key finding is that the energy necessary for water heating varies by 2:1 around the U.S. with implications for solar water heating system design and sizing. Our results provide information on expected water heater …
The Very Basics Of Sustainability - An Alternative Viewpoint, Jim Mcgovern
The Very Basics Of Sustainability - An Alternative Viewpoint, Jim Mcgovern
Other resources
This paper examines the context and meaning of the term ‘sustainability’, the factors that determine and govern climate on Earth, the population of the Earth and its trends and influencers, the requirements for sustaining life and the options that are available to humankind. Some viewpoints are presented that are alternative to ‘conventional alternative’ thinking. The author advocates keeping an open mind on all available options, including the use of oil, gas, coal, tar sands, carbon capture and sequestration, nuclear power etc., as well as the technologies that are more widely considered ‘green’ and also argues that humankind needs to face …
The Very Basics Of Sustainability - An Alternative Viewpoint (Slides With Audio) (Large File! To Speed Up Download, Right-Click On "Download" Link To Save To Own Pc.), Jim Mcgovern
Other resources
This presentation sets out the very basics of ‘sustainability’, although a definition of sustainability is not attempted. Some of the very basics are the context in which the Earth and humankind exist in space and time, the Earth’s climate, the Earth’s population and humankind’s options and choices. The author advocates keeping an open mind on all available options, including the use of oil, gas, coal, tar sands, carbon capture and sequestration, nuclear power etc., as well as the technologies that are more widely considered ‘green’. The author also argues that, in addressing the challenges that humankind faces, globally concerted effort …
Performance Analysis And Life Prediction For Small Wind Turbine Blades: A Wood Laminate Case Study, Christopher James Nosti
Performance Analysis And Life Prediction For Small Wind Turbine Blades: A Wood Laminate Case Study, Christopher James Nosti
Master's Theses
A detailed study of the fatigue life of wooden wind turbine blades for a new 10 kilowatt system was undertaken. A numerical model of the blades was created using the technical software package MATLAB in order to estimate the maximum stress occurring within the blade in response to changes in wind velocities based on a wind profile approximating the location where these turbines are expected to operate. The material properties of the wooden laminate were measured using an Instron tensile test machine and were found to be in line with published values. In parallel with this effort, a three dimensional …
Preliminary Report On Integration Of Florida's Code Energy Efficiencies Using The 2009 Iecc As The Foundation Code, Florida Solar Energy Center, Philip Fairey
Preliminary Report On Integration Of Florida's Code Energy Efficiencies Using The 2009 Iecc As The Foundation Code, Florida Solar Energy Center, Philip Fairey
FSEC Energy Research Center®
The Florida Building Commission is in the initial phase of it triennial revision of the Florida Building Code. The Florida Building Code has included specific energy provisions since its inception in 2001. Those provisions are the Florida Energy Code (FEC), which was initiated in 1979. In 2008, the Florida legislature enacted HB 7135, requiring the 2010 FEC to provide 20% energy savings compared with the 2007 FEC. HB 7135 also requires that the energy provisions of the Florida Building Code use the 2009 IECC as the foundation and that the IECC shall be modified to maintain the efficiencies of the …
Puerto Rico - Pv Training Program Study - Final Report, Florida Solar Energy Center, William Young
Puerto Rico - Pv Training Program Study - Final Report, Florida Solar Energy Center, William Young
FSEC Energy Research Center®
This Final Report summarizes the work preformed on the program entitled "Puerto Rico PV Training Program Study" for the period April 14, 2008 to June 30, 2009. The program was a contract effort between Mech-Tech College, Caguas, Puerto Rico and the Florida Solar Energy Center/University of Central Florida, Cocoa, Florida. Mech-Tech College was interested in learning about and applying renewable energy technologies and providing college level courses for the future workforce of a renewable energy industry in Puerto Rico. This report documents the activities of Florida Solar Energy Center to assist Mech-Tech College in the design, development and implementation of …
Analysis Of The Energy Star Reference Home Concept As Proposed For Epa's 2011 National Program Requirements, Florida Solar Energy Center, Philip Fairey
Analysis Of The Energy Star Reference Home Concept As Proposed For Epa's 2011 National Program Requirements, Florida Solar Energy Center, Philip Fairey
FSEC Energy Research Center®
No abstract provided.
Design And Development Of Rapid Battery Exchange Systems For Electric Vehicles To Be Used As Efficient Student Transportation, Jonathan A. Bevier
Design And Development Of Rapid Battery Exchange Systems For Electric Vehicles To Be Used As Efficient Student Transportation, Jonathan A. Bevier
Master's Theses
Rapid battery exchange systems were built for an electric van and pedal assist electric bike as a method of eliminating the need to recharge the vehicles batteries in order to increase the feasibility of using electric propulsion as a method of efficient student transportation. After selecting proper materials it was found that the systems would need a protective coating to ensure consistent operation. 1020 cold rolled steel samples coated with multiple thicknesses of vinyl resin paint, epoxy resin paint, and powder coating were subjected to environmental wear tests in order to determine if the type and thickness of common protective …
Top 10 Checklist - Energy-Efficient Buildings For The Southern United States, Florida Solar Energy Center, James Cummings
Top 10 Checklist - Energy-Efficient Buildings For The Southern United States, Florida Solar Energy Center, James Cummings
FSEC Energy Research Center®
The following Top Ten Checklist provides recommendations for creating energy efficient commercial buildings in areas with hot and humid summers. Commercial and institutional buildings vary greatly, from one to another, in size, use, and type of construction. For purposes of this Top Ten Checklist we are assuming a medium-sized (20,000 to 50,000 ft2) office building located in areas with hot and humid summers. The issues that are raised here may equally apply to schools, churches, theaters, and some retail buildings.
Effectiveness Of Florida's Residential Energy Code: 1979-2009 (Revision Of 1979-2007 Report), Florida Solar Energy Center, Philip Fairey
Effectiveness Of Florida's Residential Energy Code: 1979-2009 (Revision Of 1979-2007 Report), Florida Solar Energy Center, Philip Fairey
FSEC Energy Research Center®
The 2007 Florida Legislature authorized the Florida Building Commission (FBC) and Department of Community Affairs (DCA) to evaluate cost effectiveness of energy conservation measures including appliance efficiencies that could be implemented through the Florida Energy Code for certain buildings. Additionally, Governor Crist's Executive Order #07-127 requires the Secretary of DCA to convene the Florida Building Commission for the purposes of revising the Florida Energy Code for Building Construction to increase the energy performance of new construction in Florida by at least 15% from the 2007 Energy Code. The Commission should consider incorporating standards for appliances and standard lighting in the …
Performance Analysis Of Coal-Fired Boiler And Natural Gas Fired Boiler At Morehead State University, Devender Banne
Performance Analysis Of Coal-Fired Boiler And Natural Gas Fired Boiler At Morehead State University, Devender Banne
Morehead State Theses and Dissertations
A thesis presented to the faculty of the College of Science & Technology at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science by Devender Banne on May 4, 2009.
An On-Sun Parametric Study Of Solar Hydrogen Production Using Wo3 Photoanodes, Christopher K. Halford
An On-Sun Parametric Study Of Solar Hydrogen Production Using Wo3 Photoanodes, Christopher K. Halford
UNLV Theses, Dissertations, Professional Papers, and Capstones
The solar production of hydrogen using photoactive electrodes is a topic receiving much attention in recent years. The use of thin metal oxide films as photoanodes allows the water splitting reaction to occur at a much lower applied voltage than would be necessary with a straight electrolysis process. Researchers have reported up to 18% solar to hydrogen efficiencies over short periods. The University of Nevada Las Vegas in conjunction with the UK based firm Hydrogen Solar have developed a prototype of this type of cell using a WO3 photoanode. An on-sun test facility has been constructed by the UNLV Center …
12 - ارائة مدلي جديد به منظور ارزيابي احساس حرارتي افراد در هنگام خواب, Alireza Zolfaghari, Mehdi Maerefat
12 - ارائة مدلي جديد به منظور ارزيابي احساس حرارتي افراد در هنگام خواب, Alireza Zolfaghari, Mehdi Maerefat
Dr Alireza Zolfaghari
No abstract provided.
11 - مدلسازي و تحليل ناپاياي پاسخ حرارتي بدن انسان در هنگام خواب, Alireza Zolfaghari, Mehdi Maerefat
11 - مدلسازي و تحليل ناپاياي پاسخ حرارتي بدن انسان در هنگام خواب, Alireza Zolfaghari, Mehdi Maerefat
Dr Alireza Zolfaghari
No abstract provided.
5 - امکان سنجي استفاده از سيستمهاي سرمايش تابشي سقفي با توجه به تنوع شرايط آب و هوايي و اقليمي در ايران, Alireza Zolfaghari, Mehdi Maerefat, Amir Omidvar
5 - امکان سنجي استفاده از سيستمهاي سرمايش تابشي سقفي با توجه به تنوع شرايط آب و هوايي و اقليمي در ايران, Alireza Zolfaghari, Mehdi Maerefat, Amir Omidvar
Dr Alireza Zolfaghari
No abstract provided.