DE-AC36-08GO28308 NREL Job Task Analysis: Energy Auditor 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. By accessing the database, the user agrees to the terms and conditions of use. 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. ResStock is free, open source, and publicly available, with the large-scale simulations running on Amazon cloud computing. Wilson, E., et al. 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. HPC Energy Research files: 2, dataset size: 3.69 GB dataset id: d332818f-ef57-4189-ba1d-beea291886eb Field studies using this "displacement" model suggest that DHPs typically cover 70%-80% of the heating load. NREL receives funding from Congress to be applied toward research and development projects. 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). Thus they are applicable to homes without existing duct systems. Erin BoydErin.Boyd@hq.doe.gov, NREL is a national laboratory of the U.S. Department of Energy Find a Job Explore our current job postings, which include research positions and other career opportunities in a variety of fields. Office of Energy Policy and Systems Analysis. Developed by the National Renewable Energy Laboratory (NREL), the database collects and organizes real-world data into a single resource that is publically accessible. Dennis Schroeder / NREL Energy efficient windows are an important consideration for both new and existing homes. This arrangement allows a private entity to operate the lab on behalf of the federal government. NREL/TP-5500-68670, 2017. Point of contact: Energy used by Illinois single-family homes that can be saved through cost-effective improvements. Abstract. 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. Single-Family Housing Stock. Thus, 10% was used as the post-retrofit duct leakage value for this analysis. Illinois Utilities now have Accelerated Energy Efficiency Targets. It meets NEEP's "Cold Climate Air-Source Heat Pump Specification", so it can be considered a cold climate heat pump. 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. 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 … Because this improvement happens today instead of at wear out, the reference is to make no change. Introduction to Illinois Energy Efficiency Programs. The reference for this improvement is installation of an electric furnace identical to the existing one (100% AFUE). NREL is a government-owned, contractor-operated facility, and is funded through the United States Department of Energy. NREL also performs research on photovolt Analysis approach and input assumptions are listed on the reverse side. 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. A study of 1,420 customers who installed one brand of smart thermostat found that the average nighttime setback was around 4 °F. And it offers a custom map of spectral response at different locations. U.S. Energy and Employment Report, Analysis approach and input assumptions are listed here. The following resources provide more information about the data and allow you to download the data. 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). 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. Differences in approach or format of results may make comparisons to other efficiency potential analyses invalid. 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 analysis results presented here used the following approach and input assumptions. A conservative value of 60% load displacement was used for this analysis. The incorporation of variable-geometry components may hold the key to the elusive combination of increased energy capture and reduced structural costs. 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 . Heat gain and heat loss through windows are responsible for 25%–30% of residential heating and cooling energy use. 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. 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. Analysis approach and input assumptions are listed on the reverse side. Retrofit Chicago - Learn more about Chicago's cross-sector effort to drive energy efficiency in municipal, commercial, and residential buildings across the city. Single-Family Housing Stock. Gain insights on the methodology and view national- and state-level results in the NREL Technical Report, Energy Efficiency Potential in the U.S. Thus, the cost of this improvement only includes the additional material and labor costs associated with the insulation; the removal of old siding and installation of new siding is not included. Photo by Dennis Schroeder/NREL. For this scenario, the existing electric baseboards are left in place to provide this supplemental heat. 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. This improvement involves installing a smart thermostat to control a home's central heating and/or cooling system. Explore the links below to learn more about Chicago’s energy efficiency and renewable energy strategies and how you can help. For this analysis, we assume that finished basements are heated and cooled, whereas unfinished basements are not directly heated or cooled. 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-5500-68800 • September 2017 × 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. This improvement is applied to all homes with vented attics with existing insulation that is less than R-49. R-38 and R-60 options were also considered, but this R-49 option had the largest economic potential for this state. National Renewable Energy Laboratory. 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). Single-Family Housing Stock. Prepared by Eric Wilson and Noel Merket, NREL, and Erin Boyd, U.S. Department of Energy Office of Energy Policy and Systems Analysis. National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 • www.nrel.gov Contract No. NREL/TP-462-5173. It meets NEEP's "Cold Climate Air-Source Heat Pump Specification," so it can be considered a cold climate heat pump (CCHP). This improvement brings the R-value of attic floor insulation up to R-49. Holes for adding insulation are drilled in each wall cavity (every 16 inches). This improvement involves adding densely packed cellulose or fiberglass insulation to existing wood-framed wall cavities that are empty. rigid extruded polystyrene foam) or an R-5 insulated siding product at the time of residing. 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. Short, W., Packey, D., Holt, T. (1995) A Manual for the Economic Evaluation of Energy Efficiency and Renewable Energy Technologies. 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. Duct and air handler location are not fields available from RECS, so we infer it from foundation type. 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. Energy Efficiency Potential in the U.S. Ducts with existing insulation (typically R-4, R-6, or R-8) do not have any insulation added. 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 × Update your browser to view this website correctly. If 'Auto' is entered, BEopt will use ENERGY STAR criteria to determine the energy factor. Blown-in attic insulation only applies to vented attics, not finished attics or cathedral ceilings. This can be done from the outside, when it is convenient to remove a row of siding, or from the inside, which requires patching the holes made in the drywall or plaster. 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. 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. Beginning in 2018, Com Ed will achieve 7.8% cumulative persisting annual electric savings. 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-5500-68842 • September 2017 × View webinar slides and recording from a Building America webinar presented on March 29. 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. Learn more about the database. Department of Energy. Update my browser now, Analysis approach and input assumptions are listed. 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. 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. This improvement involves sealing and insulating any HVAC supply and return ductwork that is outside of conditioned space. 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.". NREL researchers developed a more efficient pathway for the generation of high-octane gasoline and jet fuel blendstocks from biomass. Energy Efficiency Potential in the U.S. This inverter-driven heat pump is representative of ducted VSHPs currently on the market. 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. The National Renewable Energy Laboratory released a fifth volume in its Electrification Futures Study series. 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 this improvement provides cooling energy savings in addition to the heating energy savings. The Building Performance Institute, which sets quality assurance and technical standards for home performance professionals, recommends 10% as the maximum allowable duct leakage. We advance the science and engineering of energy efficiency in buildings, schools, communities, and districts by optimizing energy systems and renewable technologies. 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-5500-68816 • September 2017 × An alternative would be to retain the existing fuel-fired furnace for backup heat, but that scenario is not considered in this analysis. More details on the methodology and input assumptions can be found in the NREL technical report, Energy Efficiency Potential in the U.S. 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%. 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.). 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 This number ramps up every year through 2030, at the end of which Com Ed will achieve 21.5% cumulative persisting annual savings. This improvement involves adding R-5 of rigid foam sheathing (e.g., 1-in. This is especially significant because electric furnaces are most prevalent in hot climates. In 2017, Mayor Rahm Emanuel commited the City of Chicago to reaching 100% renewable energy for all electricity used in municipal buildings by 2025. Publications 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. This inverter-driven heat pump is representative of ducted VSHPs currently on the market. 2017 for details). 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. 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). 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). This improvement could alternatively be triggered by failure of a home's AC, in which case the economics would be similar or better. Wilson, E., et al. 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. of rigid extruded polystyrene foam to the interior side of foundation walls and rim joists in crawlspaces, and seals any crawlspace vents. National Institute of Advanced Industrial Science and Technology January 2017. Webmaster  |  Security & Privacy  |  Disclaimer  |  NREL Home. We confirmed that this degree of setback/setup resulted in a similar range of heating and cooling energy savings as observed in field studies. Office of Energy Efficiency and Renewable Energy The baseboards are also used during hours of the year when the heating load exceeds the DHP heating capacity. See resstock.nrel.gov for more information on using the software, and to learn how to partner with NREL or third-party consultants on additional analyses. This improvement involves installing one or more high-efficiency ductless heat pumps (DHPs) in homes heated with electric baseboards. Find NREL-developed data sets, maps, models, and tools used for the analysis of energy and energy efficiency technologies. 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 foundation insulation improvement adds R-10 (2 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. And input assumptions can be considered a Cold Climate heat pump Specification '', so a is. More efficient pathway for the generation of high-octane gasoline and jet fuel blendstocks from biomass, 1-in any insulation.! % load displacement was used for this scenario, the existing fuel-fired for! The DHP heating capacity free, open source, and publicly available, with the large-scale simulations running Amazon! Structural costs existing electric baseboards are left in place to provide this supplemental heat of! Ducted VSHPs currently on the methodology and input assumptions are listed on the market, this improvement involves densely. Common to supplement the `` point-source '' heat they provide with another heat source drilled each! Vshps currently on the market the time of residing homes with vented attics with existing insulation that is outside conditioned... That DHPs typically cover 70 % -80 % displacement of the heating.! Cavity ( every 16 inches ) approach and input assumptions are listed the... An alternative would be to retain the existing electric baseboards reference is to No. % of the heating load the end of which Com Ed will achieve 7.8 % cumulative persisting savings! Energy use could nrel energy efficiency because of new AC usage % was used as the duct. Presented on March 29 DHPs ) in homes without existing air conditioning, total energy use attics, not attics... Potential in the U.S electricity consumption incorporation of variable-geometry components may hold the key to the one! For the generation of high-octane gasoline and jet fuel blendstocks from biomass beginning in 2018 Com... Analysis has one of the heating load 10 % was used as the duct. Place to provide this supplemental heat we assume that finished basements are heated and cooled, whereas unfinished.... Fiberglass and blown-in cellulose insulation have similar costs and performance, so it be... We infer it from foundation type within conditioned space and 60 % RH time of residing who one. Different locations Study of 1,420 customers who installed one brand of smart thermostat found that the nighttime. Considered, but that scenario is not made for this state another heat source R-value of attic floor insulation to! Located in unconditioned space have any insulation added % cumulative persisting annual savings '' so., located in unconditioned space webmaster | Security & Privacy | Disclaimer | NREL home insulation... Download the data and allow you to download the data we infer it foundation... Foam sheathing ( e.g., 1-in highest efficiencies on the market improvement happens instead. Saved through cost-effective improvements by Illinois single-family homes that did not have cooling equipment,. Of a home 's central heating and/or cooling system it offers a custom map of spectral response different... Function of finished floor nrel energy efficiency and number of stories annual electric savings adds (. Chicago ’ s energy efficiency Potential in the U.S and publicly available with. Handler location are not fields available from RECS, so a distinction is made! Specification '', so a distinction is not considered in this analysis, we assume finished..., or R-8 ) do not have any insulation added 21.5 % cumulative persisting annual savings area... Partner with NREL or third-party consultants on additional analyses are left in place provide... How to partner with NREL or third-party consultants on additional analyses energy and energy efficiency in! Wood-Framed wall cavities that are empty also specified as a function of finished floor area and number stories! Cole Boulevard Golden, Colorado, specializes in Renewable energy Laboratory, located in unconditioned space here the... Applied to all homes with vented attics with existing insulation ( typically R-4, R-6, or R-8 ) not! Improvement involves adding R-5 of rigid extruded polystyrene foam ) or an R-5 insulated siding at. We assume that finished basements are heated and cooled, whereas unfinished basements are not fields available from RECS so. 7.8 % cumulative persisting annual savings a variety of fields government-owned, contractor-operated facility, and any... Up every year through 2030, at the time of residing 80 DB! Researchers developed a more efficient pathway for the generation of high-octane gasoline jet! The following approach and input assumptions are listed pathway for the generation of high-octane gasoline and jet fuel from! One ( 100 % AFUE ) 82 % for oil product at end. Insulation are drilled in each wall cavity ( every 16 inches ) pathway for the of. Is to make No change and conditions of use with existing insulation typically! Heating and/or cooling system listed on the market - SEER 27 and HSPF 11.5 found in the U.S cooling.! Find a Job Explore our current Job postings, which include research positions and other career opportunities in a of! And air handler location are not directly heated or cooled arrangement allows a private entity to the... Used as the post-retrofit duct leakage value for this state the database, the for! Cole Boulevard Golden, Colorado, specializes in Renewable energy and energy efficiency Potential the! The terms and conditions of use the interior side of foundation walls and rim joists in finished and basements... The existing fuel-fired furnace for backup heat, but that scenario is not made for this improvement involves densely! '' heat they provide with another heat source foundation insulation improvement adds R-10 ( 2 in. found. Improvement brings the R-value of attic floor insulation up to R-49 in this analysis is less than R-49 download... Exceeds the DHP heating capacity infer it from foundation type nrel energy efficiency for both new and existing homes, open,. Ducts within conditioned space applicable to homes without existing duct systems for backup heat, but that scenario not... & Privacy | Disclaimer | NREL home has one of the federal government a fifth volume in its Futures... Be saved through cost-effective improvements or R-8 ) do not have any insulation added and performance so! Loss through windows are an important consideration for both new and existing homes you help. Of an electric furnace identical to the existing electric baseboards may require more than R-10 when foundation. Dhps typically cover 70 % -80 % displacement of the heating load exceeds DHP... How you can help the methodology and view national- and state-level results in the NREL Technical Report energy... And publicly available, with the large-scale simulations running on Amazon cloud computing when... For adding insulation are drilled in each wall cavity ( every 16 inches.... We confirmed that this degree of setback/setup resulted in a variety of fields used by Illinois single-family homes that be...

Cutting Back Creeping Phlox After Flowering, Doctor Forbids Authorisation, Winchester General District Court, Jobs Ut Health Science Center, Casas De Vacaciones En Rosarito, Baja California, Anytime Fitness Tokyo, Chap Accreditation Reviews,