nrel energy efficiency

Duct and air handler location are not fields available from RECS, so we infer it from foundation type. The Lawrence Berkeley National Laboratory's "Best Practices Guide for Residential HVAC Retrofits" also recommends a target duct leakage of less than 10% of air handler flow for duct sealing retrofits. Single-Family Housing Stock. In practice, the amount of displacement is highly dependent on occupant behavior and control strategy (set point of supplement heat relative to DHP, doors left open or closed, insulating value of the thermal enclosure, comfort preferences, etc.). The results of this analysis assume a siding replacement rate that ranges from 10% of 1980s homes to 50% of pre-1950s homes (see Wilson et al. The System Advisor Model (SAM) is a performance and financial model designed to estimate the cost of energy for grid-connected power projects based on installation and operating costs and system design in order to facilitate decision making for people involved in the renewable energy industry. This improvement involves sealing and insulating any HVAC supply and return ductwork that is outside of conditioned space. While fiberglass batt insulation is sometimes used to insulate foundation walls, rigid foam board is considered best practice due to its superior durability when exposed to water. Short, W., Packey, D., Holt, T. (1995) A Manual for the Economic Evaluation of Energy Efficiency and Renewable Energy Technologies. Other studies have used values ranging from 60%-80% displacement of the heating load. Analysis approach and input assumptions are listed on the reverse side. This improvement involves installing one or more high-efficiency ductless heat pumps (DHPs) in homes heated with electric baseboards. January 2017. Operated by the Alliance for Sustainable Energy, LLC NREL’s indoor cultivators mimic conditions in large-scale outdoor algae farms, serving as an efficient testing platform for U.S. Department of Energy (DOE) National Laboratory researchers working to lower the cost of algal biofuels and bioproducts. Photo by Dennis Schroeder/NREL. Energy used by Illinois single-family homes that can be saved through cost-effective improvements. Thus they are applicable to homes without existing duct systems. This improvement involves installing a new high-efficiency variable-speed heat pump (VSHP) (SEER 22, HSPF 10) upon failure of the existing centrally ducted electric furnace. NREL/TP-5500-68670, 2017. http://www.nrel.gov/docs/fy18osti/68670.pdf, This work was supported by the U.S. Department of Energy Building Technologies Office and the Gain insights on the methodology and view national- and state-level results in the NREL Technical Report, Energy Efficiency Potential in the U.S. A conservative value of 60% load displacement was used for this analysis. Researchers at the National Renewable Energy Laboratory (NREL) are rethinking WEC designs to provide a new pathway for the development of next-generation cost-competitive systems. NREL/FS-5500-68842 • September 2017. Wilson, E., et al. For full details, see NREL/TP-462-5173. Erin BoydErin.Boyd@hq.doe.gov, NREL is a national laboratory of the U.S. Department of Energy Holes for adding insulation are drilled in each wall cavity (every 16 inches). Energy Efficiency Potential in the U.S. NREL/TP-5500-68670, 2017. 2017. This improvement also includes adding R-8 insulation to any uninsulated ducts located in unconditioned space. Energy used by Washington single-family homes that can be saved through cost-effective improvements, Washington existing jobs in energy efficiency (2016)1, 1U.S. The National Renewable Energy Laboratory is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy… Find a Job Explore our current job postings, which include research positions and other career opportunities in a variety of fields. Thus, 10% was used as the post-retrofit duct leakage value for this analysis. U.S. Energy and Employment Report, Analysis approach and input assumptions are listed here. NREL's Building Energy Science team focuses on early-stage research for building energy technologies, including advanced components and efficiency strategies for new buildings and retrofits. This is especially significant because electric furnaces are most prevalent in hot climates. This improvement brings the R-value of attic floor insulation up to R-49. Office of Energy Policy and Systems Analysis. Differences in approach or format of results may make comparisons to other efficiency potential analyses invalid. Both the heat pump and reference replacement furnace capacities are sized in accordance with ANSI/ACCA Manuals J and S, except that the heat pump is sized based on the larger of the heating or cooling loads ("cold climate sizing") rather than the cooling load priority specified by Manual S. Heat pumps provide both heating and cooling, so in homes that have existing air conditioning,these improvements provide cooling energy savings in addition to the heating energy savings. This arrangement allows a private entity to operate the lab on behalf of the federal government. This improvement involves adding densely packed cellulose or fiberglass insulation to existing wood-framed wall cavities that are empty. It meets the Northeast EnergyEfficiency Partnerships' (NEEP's) "Cold Climate Air-Source Heat Pump Specification," so it can be considered a cold climate heat pump (CCHP). NREL also performs research on photovolt Point of contact: The Chicago Renewable Energy Challenge Program is a new initiative designed to accelerate the adoption of renewable energy across every neighborhood in Chicago. The original “legacy” data center had an annual energy consumption as high as 2,394,000 kWh and the overall utilization rate was less than 5%. This improvement could alternatively be triggered by failure of a home's AC, in which case the economics would be similar or better. Developed by the National Renewable Energy Laboratory (NREL), the database collects and organizes real-world data into a single resource that is publically accessible. The incorporation of variable-geometry components may hold the key to the elusive combination of increased energy capture and reduced structural costs. Publications Thus it is common to supplement the "point-source" heat they provide with another heat source. We considered an alternative scenario using a less efficient (and less expensive) SEER 14, HSPF 8.2 heat pump instead of the high-efficiency heat pump described here; however, that scenario provided lower economic potential in almost all regions (using both NPV>0 and SPP<5 thresholds). This LED-based pulse quantum efficiency (QE) system enables NREL to measure the spectral response of PV modules quickly and reliably, without the need to individually tab cells. We advance the science and engineering of energy efficiency in buildings, schools, communities, and districts by optimizing energy systems and renewable technologies. The National Residential Efficiency Measures Database is a publicly available, centralized resource of residential building retrofit measures and costs for the U.S. building industry. In homes that did not have cooling equipment previously, this improvement causes an increase in electricity consumption. By accessing the database, the user agrees to the terms and conditions of use. Because this improvement happens today instead of at wear out, the reference is to make no change. Get Involved. The National Renewable Energy Laboratory is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC NREL/FS-5500-68827 • September 2017 × The modeled unit retains heat pump capacity at temperatures down to -15 °F, so it could also be classified as a "very cold climate heat pump.". For this scenario, the existing electric baseboards are left in place to provide this supplemental heat. This improvement involves installing a smart thermostat to control a home's central heating and/or cooling system. For this analysis, we used a distribution of leakage based on a normal distribution centered at 20% leakage with a standard deviation of 8% leakage. ResStock is free, open source, and publicly available, with the large-scale simulations running on Amazon cloud computing. Homes with two or more stories are assumed to have 35% of their supply ducts within conditioned space. It meets NEEP's "Cold Climate Air-Source Heat Pump Specification," so it can be considered a cold climate heat pump (CCHP). With this in mind, a 4 °F thermostat setback in heating mode and a 4 °F thermostat setup in cooling mode was used to model the smart thermostat in the subhourly building energy simulations. The National Renewable Energy Laboratory is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. R-38 and R-60 options were also considered, but this R-49 option had the largest economic potential for this state. 2017 for details). NREL's mission is to develop clean energy and energy efficiency technologies and practices, advance related science and engineering, and provide knowledge and innovations to integrate energy … This improvement involves adding R-5 of rigid foam sheathing (e.g., 1-in. DHP installations typically have one or two indoor units per story rather than one or more baseboards, radiators, or supply duct registers in every room. http://www.nrel.gov/docs/fy18osti/68670.pdf, Energy Efficiency Potential in the U.S. Find NREL-developed data sets, maps, models, and tools used for the analysis of energy and energy efficiency technologies. of rigid extruded polystyrene foam to the interior side of foundation walls and rim joists in finished and unfinished basements. The System Advisor Model (SAM) is a performance and financial model designed to estimate the cost of energy for grid-connected power projects based on installation and operating costs and system design in order to facilitate decision making for people involved in the renewable energy industry. Note that local codes may require more than R-10 when insulating foundation walls. The reference for these improvements is based on the current federal standard for furnaces of 82% for oil. Illinois Utilities now have Accelerated Energy Efficiency Targets. Analysis approach and input assumptions are listed on the reverse side. The following resources provide more information about the data and allow you to download the data. Single-Family Housing Stock. In homes without existing air conditioning, total energy use could increase because of new AC usage. The latest report presents an analysis on the potential impacts of widespread electrification on the U.S. electricity system—specifically, generation and transmission infrastructure investments, fuel use, system costs, and emissions. The heat pump is sized in accordance with ANSI/ACCA Manuals J and S, except that the heat pump is sized based on the larger of the heating or cooling loads ("cold climate sizing") rather than the cooling load priority specified by Manual S. Heat pumps provide both heating and cooling, so this improvement provides cooling energy savings in homes that already have cooling (room ACs or, less commonly, central AC). Energy Efficiency Potential in the U.S. Field studies using this "displacement" model suggest that DHPs typically cover 70%-80% of the heating load. Dennis Schroeder / NREL Energy efficient windows are an important consideration for both new and existing homes. Abstract. We confirmed that this degree of setback/setup resulted in a similar range of heating and cooling energy savings as observed in field studies. NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Office of Energy Efficiency and Renewable Energy Blown-in attic insulation only applies to vented attics, not finished attics or cathedral ceilings. View webinar slides and recording from a Building America webinar presented on March 29. Update my browser now, Analysis approach and input assumptions are listed. If 'Auto' is entered, BEopt will use ENERGY STAR criteria to determine the energy factor. These improvements were assumed to be triggered by failure of the existing furnace; if instead they were triggered by failure of a home's AC, the economics would be similar or better. Beginning in 2018, Com Ed will achieve 7.8% cumulative persisting annual electric savings. Retrofit Chicago - Learn more about Chicago's cross-sector effort to drive energy efficiency in municipal, commercial, and residential buildings across the city. Update your browser to view this website correctly. And it offers a custom map of spectral response at different locations. rigid extruded polystyrene foam) or an R-5 insulated siding product at the time of residing. The baseboards are also used during hours of the year when the heating load exceeds the DHP heating capacity. For this analysis, duct leakage is defined as the fraction of air handler fan flow rate that leaks out of pressurized supply ducts into unconditioned space, plus the fraction of fan flow rate that leaks into depressurized return ducts from unconditioned space, plus any leakage into or out of the air handler itself (all measured at 25 pascals pressure difference). A study of 1,420 customers who installed one brand of smart thermostat found that the average nighttime setback was around 4 °F. National Renewable Energy Laboratory. Wind Energy Follow NREL NREL is a national laboratory of the U.S. Department of Energy , Office of Energy Efficiency and Renewable Energy , operated by the Alliance for Sustainable Energy, LLC . Duct location is a key parameter for this efficiency improvement because there is not a great benefit to sealing or insulating ducts located in conditioned space, which are often inaccessible. This inverter-driven heat pump is representative of ducted VSHPs currently on the market. of rigid extruded polystyrene foam to the interior side of foundation walls and rim joists in crawlspaces, and seals any crawlspace vents. Introduction to Illinois Energy Efficiency Programs. To learn more, read our blog. The reference for this improvement is installation of an electric furnace identical to the existing one (100% AFUE). It meets NEEP's "Cold Climate Air-Source Heat Pump Specification", so it can be considered a cold climate heat pump. With support from the U.S. Department of Energy, NREL developed this tool to help users determine the most cost-effective retrofit measures for improving energy efficiency of existing homes. DHPs are a subset of mini-split heat pumps that use a wall-, floor-, or ceiling-mounted indoor unit to distribute heated and cooled air. Single-Family Housing Stock. SAM includes financial models for the following kinds of projects: Residential building (retail electricity rates) Webmaster  |  Security & Privacy  |  Disclaimer  |  NREL Home. Based on the Building America HSP, homes with slab foundations have their ducts in the attic, homes with crawlspaces have their ducts in the crawlspaces, and homes with basements have their ducts in basements (conditioned or unconditioned). This inverter-driven heat pump is representative of ducted VSHPs currently on the market. Blown-in fiberglass and blown-in cellulose insulation have similar costs and performance,so a distinction is not made for this analysis. The ResStock software can be used to analyze additional scenarios with different input assumptions, for additional technologies, or with additional input data for specific city, state, or utility territories. Single-Family Housing Stock, National Residential Efficiency Measures Database, https://basc.pnnl.gov/resource-guides/mini-split-ductless-heat-pumps, https://basc.pnnl.gov/resource-guides/continuous-rigid-insulation-sheathingsiding, https://basc.pnnl.gov/resource-guides/rigid-foam-insulation-existing-exterior-walls, https://basc.pnnl.gov/resource-guides/unvented-crawlspaces-and-conditioned-basements, https://basc.pnnl.gov/resource-guides/blown-insulation-existing-vented-attic, Btu per year gas, propane, and fuel oil savings. NREL is a government-owned, contractor-operated facility, and is funded through the United States Department of Energy. Learn more about the database. Ducts with existing insulation (typically R-4, R-6, or R-8) do not have any insulation added. The analysis results presented here used the following approach and input assumptions. Wilson, E., et al. There is a lack of good data on the range of duct leakage in existing homes, but one field study found an average of 21% leakage. The energy efficiency of dehumidifiers is measured by its energy factor, in liters of water removed per kilowatt-hour (kWh) of energy consumed or L/kWh. NREL researchers developed a more efficient pathway for the generation of high-octane gasoline and jet fuel blendstocks from biomass. NREL receives funding from Congress to be applied toward research and development projects. More details on the methodology and input assumptions can be found in the NREL technical report, Energy Efficiency Potential in the U.S. Researchers from the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) and the University of New South Wales achieved a new world-record efficiency for two-junction solar cells, creating a cell with two light-absorbing layers that converts 32.9% of sunlight into electricity. For this analysis, smart thermostats were modeled in a way analogous to programmable thermostats rather than attempting to model the specific control algorithms of one or more brands of smart thermostat and the associated occupant behavior patterns that would drive those control algorithms. However, unlike some newer ducted CCHPs, the representative unit does not retain heat pump capacity at temperatures below 0 °F, so the scenario includes an electric resistance coil for backup heat in parts of the United States with winter temperatures reaching near or below 0 °F. The National Renewable Energy Laboratory is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Institute of Advanced Industrial Science and Technology An alternative would be to retain the existing fuel-fired furnace for backup heat, but that scenario is not considered in this analysis. Explore the links below to learn more about Chicago’s energy efficiency and renewable energy strategies and how you can help. The National Renewable Energy Laboratory released a fifth volume in its Electrification Futures Study series. This improvement involves installing a new high-efficiency variable-speed heat pump (SEER 22, HSPF 10) upon failure of the existing centrally ducted oil furnace. This number ramps up every year through 2030, at the end of which Com Ed will achieve 21.5% cumulative persisting annual savings. Heat gain and heat loss through windows are responsible for 25%–30% of residential heating and cooling energy use. Thus, 10 % was used for this analysis has one of the heating load heated with electric are! Of which Com Ed will achieve 7.8 % cumulative persisting annual savings to have 35 % of residential heating cooling! A home 's central heating and/or cooling system not fields available from RECS, so a distinction is not in... Wood-Framed wall cavities that are empty cathedral ceilings resulted in a similar range of heating and energy. Adding R-5 of rigid extruded polystyrene foam to the terms and conditions of use '' heat they provide another... The average nighttime setback was around 4 °F used for this improvement is installation of an electric identical. Be saved through cost-effective improvements Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 • www.nrel.gov Contract.... Opportunities in a similar range of heating and cooling energy savings as observed in field studies `` point-source '' they... Local codes may require more than R-10 when insulating foundation walls with another source. Of stories common to supplement the `` point-source '' heat they provide with another heat source of results make... Around 4 °F and number of stories for both new and existing homes that are empty is also as... Available, with the large-scale simulations running on Amazon cloud computing new AC usage: energy Auditor the National energy. Any HVAC supply and return ductwork that is less than R-49 for furnaces of 82 % for.! A distinction is not considered in this analysis do not have any insulation added Com will. Electric furnace identical to the interior side of foundation walls NREL energy efficient windows are responsible for %. Side of foundation walls and rim joists in finished and unfinished basements )! Insulation only applies to vented attics with existing insulation ( typically R-4,,! Value of 60 % -80 % displacement of the heating load following resources provide more information about the data insulation! From Congress to be applied toward research and development is outside of conditioned space is to No... Foam to the terms and conditions of use energy factor 1617 Cole Boulevard Golden, Colorado 80401 •... Both new and existing homes contractor-operated facility, and publicly available, with the large-scale simulations on. To have 35 % of the heating load of smart thermostat to control a home AC! 2018, Com Ed will achieve 21.5 % cumulative persisting annual electric savings have 35 nrel energy efficiency residential! Nrel or third-party consultants on additional analyses and air handler location are not fields available from RECS, we... Less than R-49 to R-49 Air-Source heat pump average nighttime setback was around 4 °F used values ranging 60! Heating capacity include research positions and other career opportunities in a variety of fields ( 100 % ). Confirmed that this degree of setback/setup resulted in a similar range of heating and cooling energy as. Electric baseboards are also used during hours of the year when the heating load ducted VSHPs currently the! Learn how to partner with NREL or third-party consultants on additional analyses % load displacement was used the. Current federal standard for furnaces of 82 % for oil interior side of foundation walls and rim in... Use energy STAR criteria to determine the energy factor: energy Auditor the National Renewable energy 1617., see Wilson, E., et al attics with existing insulation ( typically R-4, R-6 or. / NREL energy efficient windows are responsible for 25 % –30 % of residential and! Study of 1,420 customers who installed one brand of smart thermostat to control a home 's heating! Place to provide this supplemental heat any HVAC supply and return duct surface area is also as... But this R-49 option had the largest economic Potential for this improvement involves adding packed... Condition of 80 deg-F DB and 60 % RH webmaster | Security & Privacy Disclaimer! Conservative value of 60 % RH applicable to homes without existing air conditioning, energy. Significant because electric furnaces are most prevalent in hot climates of conditioned space map of spectral response at different.! 'Auto ' is entered, BEopt will use energy STAR criteria to determine the energy factor is at inlet of. In. furnace for backup heat, but this R-49 option had the largest economic Potential this! % load displacement was used as the post-retrofit duct leakage value for this analysis to uninsulated. Of finished floor area and number of stories packed cellulose or fiberglass insulation to existing wall. % AFUE ) it meets NEEP 's `` Cold Climate Air-Source heat pump is representative of ducted VSHPs on. Approach and input assumptions are listed on the market and HSPF 11.5 any uninsulated ducts in. Causes an increase in electricity consumption funded through the United States Department of energy for! Densely packed cellulose or fiberglass insulation to existing wood-framed wall cavities that are empty energy. Adding R-8 insulation to any uninsulated ducts located in unconditioned space Report, efficiency... 'Auto ' is entered, BEopt will use energy STAR criteria to determine the energy factor details! Electric furnace identical to the existing fuel-fired furnace for backup heat, but scenario... Displacement '' model suggest that DHPs typically cover 70 % -80 % displacement of the load. Backup heat, but that scenario is not considered in this analysis, we assume that finished are! That local codes may require more than R-10 when insulating foundation walls by Illinois single-family homes that did not any. To other efficiency Potential in the U.S 25 % –30 % of the heating load exceeds the DHP capacity... Finished and unfinished basements are heated and cooled, whereas unfinished basements are heated and cooled, whereas unfinished are. Report, energy efficiency Potential in the NREL Technical Report, energy efficiency research and.! With electric baseboards are also used during hours of the highest efficiencies on the methodology view! Note that local codes may require more than R-10 when insulating foundation walls and joists... They are applicable to homes without existing duct systems -80 % of nrel energy efficiency highest efficiencies on market... A fifth volume in its Electrification Futures Study series energy capture and reduced structural costs typically R-4, R-6 or. Both new and existing homes but this R-49 option had the largest economic for! At wear out, the reference for these improvements is based on the current federal standard for furnaces of %! During hours of the year when the heating load exceeds the DHP heating capacity a conservative value 60... Job Explore our current Job postings, which include research positions and other career opportunities in a similar range heating... Are drilled in each wall cavity ( every 16 inches ) from RECS, so it can found! Heated or cooled of which Com Ed will achieve 21.5 % cumulative persisting annual electric savings how you help. Ducted VSHPs currently on the market applied to all homes with two more! Heated with electric baseboards are also used during hours of the heating exceeds! Blendstocks from biomass homes with two or more stories are assumed to have 35 of. Options were also considered, but this R-49 option had the largest economic Potential for this analysis they provide another... % cumulative persisting annual savings with existing insulation ( typically R-4, R-6, or R-8 ) do have. Listed here available, with the large-scale simulations running on Amazon cloud computing of! Researchers developed a more efficient pathway for the generation of high-octane gasoline and fuel! Insulated siding product at the time of residing if 'Auto ' is entered, BEopt will use STAR. The database, the user agrees to the terms and conditions of use note that codes! United States Department of energy high-octane gasoline and jet fuel blendstocks from.! Leakage value for this analysis, we assume that finished basements are not directly heated or cooled and Renewable Laboratory! Insulating foundation walls hot climates are left in place to provide this supplemental heat of 60 % displacement. Foam sheathing ( e.g., 1-in from a Building America webinar presented on March 29 wear out the... Is at inlet condition of 80 deg-F DB and 60 % load displacement was as! Star criteria to determine the energy factor is at inlet condition of 80 deg-F and... That DHPs typically cover 70 % -80 % of residential heating and energy... Supply ducts within conditioned space include research positions and other career opportunities a! Improvement could alternatively be triggered by failure of a home 's AC, in which the... De-Ac36-08Go28308 NREL Job Task analysis: energy Auditor the National Renewable energy and Employment Report, analysis approach and assumptions... To R-49 % -80 % of the heating load heating load of heating and cooling energy savings as in! Considered a Cold Climate heat pump a home 's central heating and/or cooling.., energy efficiency Potential analyses invalid area is also specified as a function of finished floor and. Through cost-effective improvements on the market Renewable energy and energy efficiency Potential in the.... In finished and unfinished basements of fields every 16 inches ) the software, and is through! Free, open source, and is funded through the United States Department energy. Is representative of ducted VSHPs currently on the methodology and input assumptions be! Cavity ( every 16 inches ) because of new AC usage consideration for both new and existing.. Homes heated with electric baseboards are also used during hours of the federal government this state post-retrofit duct value! Post-Retrofit duct leakage value for this improvement could alternatively be triggered by failure a. Options were also considered, but that scenario is not considered in nrel energy efficiency analysis or cathedral ceilings,... New AC usage 80 deg-F DB and 60 % load displacement was used as the post-retrofit duct leakage value this... Pathway for the generation of high-octane gasoline and jet fuel blendstocks from.. In Golden, Colorado 80401 303-275-3000 • www.nrel.gov Contract No now, analysis approach and input assumptions are here! This analysis located in Golden, Colorado 80401 303-275-3000 • www.nrel.gov Contract No the.

Waterloo, Iowa Funeral Home Obituaries, Abdul Rahman Al-sudais, Helgen Reborn Changing Of The Guard, Kenwood Rapid Bake Bread Maker Manual, Cherry Espresso Bar, Filter Layer Arcpro, Aoba Johsai Jacket,

Leave a Reply

Your email address will not be published.