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Scripted Building Energy Modeling and Analysis
Building energy analysis is often time-intensive, error-prone, and non-reproducible. Entire energy analyses can be scripted end-to-end using the OpenStudio Ruby API. Common tasks within an analysis can be automated using OpenStudio Measures. Graphical user interfaces (GUI's) and component libraries reduce time, decrease errors, and improve repeatability in energy modeling.
Date:
October 1, 2012
Creator:
Macumber, D.
System:
The UNT Digital Library
Getting from Goals to Projects in the Ground (Presentation)
Presentation given at the 2012 Department of Homeland Security Renewable Energy Roundtable on Energy Savings Performance Contracts (ESPCs) and Power Purchase Agreements (PPAs) for Renewable Energy (RE).
Date:
March 1, 2012
Creator:
Springer, B.
System:
The UNT Digital Library
Heat Pump Water Heater Modeling in EnergyPlus
This presentation summarizes NREL's development of a HPWH model for use in hourly building energy simulation programs, such as BEopt; this presentation was given at the Building America Stakeholder meeting on March 1, 2012, in Austin, Texas.
Date:
March 1, 2012
Creator:
Wilson, E. & Christensen, C.
System:
The UNT Digital Library
Solar Water Heating
Overview of photovoltaics role with passive solar houses.
Date:
October 1, 2012
Creator:
Walker, A.
System:
The UNT Digital Library
Fuel Cell Technology Status - Voltage Degradation [Presentation]
This presentation describes an independent assessment of fuel cell durability status and discusses the project's relevance to the Department of Energy Hydrogen and Fuel Cells Program; NREL's analysis approach; the FY12 technical accomplishments including the fourth annual publication of results; and project collaborations and future work.
Date:
June 1, 2012
Creator:
Kurtz, J.; Wipke,; Sprik, S. & Saur, G.
System:
The UNT Digital Library
Indian Solar Cities Programme: An Overview of Major Activities and Accomplishments
Indian Solar Cities Programme supports 60 Indian cities in the development of EE and RE projects. Aims to reduce conventional energy demand by 10% by 2013, compared to a baseline year of 2008, and support is provided to municipal corporations for preparing and implementing a master plan.
Date:
May 1, 2012
Creator:
Kandt, A.
System:
The UNT Digital Library
Renewable Electricity Futures
This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.
Date:
October 1, 2012
Creator:
Mai, Trieu
System:
The UNT Digital Library
Renewable Electricity Futures
This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented at Wind Powering America States Summit. The Summit, which follows the American Wind Energy Association's (AWEA's) annual WINDPOWER Conference and Exhibition, provides state Wind Working Groups, state energy officials, U.S. Energy Department and national laboratory representatives, and professional and institutional partners an opportunity to review successes, opportunities, and challenges for wind energy and plan future collaboration.
Date:
August 1, 2012
Creator:
DeMeo, E.
System:
The UNT Digital Library
Stationary Fuel Cell Evaluation (Presentation)
This powerpoint presentation discusses its objectives: real world operation data from the field and state-of-the-art lab; collection; analysis for independent technology validation; collaboration with industry and end users operating stationary fuel cell systems and reporting on technology status, progress and technical challenges. The approach and accomplishments are: A quarterly data analysis and publication of first technical stationary fuel cell composite data products (data through June 2012).
Date:
May 1, 2012
Creator:
Kurtz, J.; Wipke, K.; Sprik, S.; Ramsden, T. & Ainscough, C.
System:
The UNT Digital Library
Modeling for System Integration Studies
This presentation describes some the data requirements needed for grid integration modeling and provides real-world examples of such data and its format. Renewable energy integration studies evaluate the operational impacts of variable generation. Transmission planning studies investigate where new transmission is needed to transfer energy from generation sources to load centers. Both use time-synchronized wind and solar energy production and load as inputs. Both examine high renewable energy penetration scenarios in the future.
Date:
May 1, 2012
Creator:
Orwig, K. D.
System:
The UNT Digital Library
Path to Zero: Ultra-Efficient Architecture on the NREL Campus: S&TF and Master Planning
Describe the aspects of NREL's S and TF and Campus Master Planning in terms of how they have influenced ultra-efficient architecture on NREL's campus. Energy goals for the NREL campus are: (1) Understand how buildings uses energy, implement the cost-effective energy and water efficiency retrofits; (2) Use principals of energy efficiency and low energy design to reduce energy demand in all new construction; (3) Operate central plants efficiently; (4) Alternative transportation; (5) Use combined heat and power systems; (6) Use on-site renewables for demonstration and where it is cost-effective; and (7) Buy green power (over the next 25 years) so that 100% of our power will be from renewable sources.
Date:
May 1, 2012
Creator:
Carlisle, N.
System:
The UNT Digital Library
Automated Comparison of Building Energy Simulation Engines
This presentation describes the BEopt comparative test suite, which is a tool that facilitates the automated comparison of building energy simulation engines. It also demonstrates how the test suite is improving the accuracy of building energy simulation programs. Building energy simulation programs inform energy efficient design for new homes and energy efficient upgrades for existing homes. Stakeholders rely on accurate predictions from simulation programs. Previous research indicates that software tends to over-predict energy usage for poorly-insulated leaky homes. NREL is identifying, investigating, and resolving software inaccuracy issues. Comparative software testing is one method of many that NREL uses to identify potential software issues.
Date:
August 1, 2012
Creator:
Polly, B.; Horowitz, S.; Booten, B.; Kruis, N. & Christensen, C.
System:
The UNT Digital Library
Controlled Hydrogen Fleet and Infrastructure Analysis
This is a presentation about the Fuel Cell Electric Vehicle Learning Demo, a 7-year project and the largest single FCEV and infrastructure demonstration in the world to date. Information such as its approach, technical accomplishments and progress; collaborations and future work are discussed.
Date:
May 1, 2012
Creator:
Wipke, K.; Sprik, S.; Kurtz, J.; Ramsden, T.; Ainscough, C. & Saur, G.
System:
The UNT Digital Library
Gearbox Reliability Collaborative Update
Understand and isolate sources of gearbox failures; Improve understanding of internal loads and response; Normal operation and transients; Improve analysis tools to accurately simulate response; Improve ability to reproduce field response in dyno testing; Evaluate how CM augments design and O and M.
Date:
April 1, 2012
Creator:
Keller, J.; McDade, M.; LaCava, W.; Guo, Y. & Sheng, S.
System:
The UNT Digital Library
Overview of Computer-Aided Engineering of Batteries and Introduction to Multi-Scale, Multi-Dimensional Modeling of Li-Ion Batteries
This 2012 Annual Merit Review presentation gives an overview of the Computer-Aided Engineering of Batteries (CAEBAT) project and introduces the Multi-Scale, Multi-Dimensional model for modeling lithium-ion batteries for electric vehicles.
Date:
May 1, 2012
Creator:
Pesaran, A.; Kim, G. H.; Smith, K.; Santhanagopalan, S. & Lee, K. J.
System:
The UNT Digital Library
Recoverable Resource Estimate of Identified Onshore Geopressured Geothermal Energy in Texas and Louisiana
Geopressured geothermal reservoirs are characterized by high temperatures and high pressures with correspondingly large quantities of dissolved methane. Due to these characteristics, the reservoirs provide two sources of energy: chemical energy from the recovered methane, and thermal energy from the recovered fluid at temperatures high enough to operate a binary power plant for electricity production. Formations with the greatest potential for recoverable energy are located in the gulf coastal region of Texas and Louisiana where significantly overpressured and hot formations are abundant. This study estimates the total recoverable onshore geopressured geothermal resource for identified sites in Texas and Louisiana. In this study a geopressured geothermal resource is defined as a brine reservoir with fluid temperature greater than 212 degrees F and a pressure gradient greater than 0.7 psi/ft.
Date:
April 1, 2012
Creator:
Esposito, A. & Augustine, C.
System:
The UNT Digital Library
Renewable Electricity Futures
This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in a webinar given by the California Energy Commission.
Date:
August 1, 2012
Creator:
Hand, M. Maureen
System:
The UNT Digital Library
Strategic Energy Analysis
This slide presentation discusses impacts of climate change on renewable energy production.
Date:
June 1, 2012
Creator:
Newmark, R. & Bilello, D.
System:
The UNT Digital Library
Building-Integrated Photovoltaics (BIPV) in the Residential Section: An Analysis of Installed Rooftop Prices
This powerpoint presentation to be presented at the World Renewable Energy Forum on May 17, 2012, in Denver, CO, discusses building-integrated photovoltaics (BIPV) in the residential section and includes an analysis of installed rooftop prices.
Date:
June 1, 2012
Creator:
James, T.; Goodrich, A.; Woodhouse, M.; Margolis, R. & Ong, S.
System:
The UNT Digital Library
NREL's e-Ca Test
Presentation on NREL's e-Ca test.
Date:
October 1, 2012
Creator:
Dameron, A. A.
System:
The UNT Digital Library
Spring 2012 Composite Data Products - Backup Power
This presentation is about the Spring 2012 Composite Data Products - Backup Power April 3, 2012.
Date:
June 1, 2012
Creator:
Kurtz, J.; Wipke, K.; Sprik, S.; Ramsden, T.; Ainscough, C. & Saur, G.
System:
The UNT Digital Library
Renewable Electricity Futures
This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. This presentation was presented in a Wind Powering America webinar on August 15, 2012 and is now available through the Wind Powering America website.
Date:
August 1, 2012
Creator:
Mai, Trieu
System:
The UNT Digital Library
Examination of a Junction-Box Adhesion Test for Use in Photovoltaic Module Qualification
Engineering robust adhesion of the junction-box (j-box) is a hurdle typically encountered by photovoltaic (PV) module manufacturers during product development. There are historical incidences of adverse effects (e.g., fires) caused when the j-box/adhesive/module system has failed in the field. The addition of a weight to the j-box during the 'damp heat' IEC qualification test is proposed to verify the basic robustness of its adhesion system. The details of the proposed test will be described, in addition to the preliminary results obtained using representative materials and components. The described discovery experiments examine moisture-cured silicone, foam tape, and hot-melt adhesives used in conjunction with PET or glass module 'substrates.' To be able to interpret the results, a set of material-level characterizations was performed, including thermogravimetric analysis, differential scanning calorimetry, and dynamic mechanical analysis. PV j-boxes were adhered to a substrate, loaded with a prescribed weight, and then placed inside an environmental chamber (at 85C, 85% relative humidity). Some systems did not remain attached through the discovery experiments. Observed failure modes include delamination (at the j-box/adhesive or adhesive/substrate interface) and phase change/creep. The results are discussed in the context of the application requirements, in addition to the plan for the formal experiment supporting …
Date:
August 1, 2012
Creator:
Miller, D. C. & Wohlgemuth, J. H.
System:
The UNT Digital Library
Considerations for a Standardized Test for Potential-Induced Degradation of Crystalline Silicon PV Modules
Over the past decade, there have been observations of module degradation and power loss because of the stress that system voltage bias exerts. This results in part from qualification tests and standards note adequately evaluating for the durability of modules to the long-term effects of high voltage bias that they experience in fielded arrays. This talk deals with factors for consideration, progress, and information still needed for a standardized test for degradation due to system voltage stress.
Date:
March 1, 2012
Creator:
Hacke, P.
System:
The UNT Digital Library