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New Home Buyer Solar Water Heater Trade-Off Study

Description: This report details the results of a research conducted in 1998 and 1999 and outlines a marketing deployment plan designed for businesses interested in marketing solar water heaters in the new home industry.
Date: August 18, 1999
Creator: Corporation, Symmetrics Marketing
Partner: UNT Libraries Government Documents Department

Research and Development Roadmap for Water Heating Technologies

Description: Although water heating is an important energy end-use in residential and commercial buildings, efficiency improvements in recent years have been relatively modest. However, significant advancements related to higher efficiency equipment, as well as improved distribution systems, are now viable. DOE support for water heating research, development and demonstration (RD&D) could provide the impetus for commercialization of these advancements.
Date: October 1, 2011
Creator: Goetzler, William; Gagne, Claire; Baxter, Van D; Lutz, James; Merrigan, Tim & Katipamula, Srinivas
Partner: UNT Libraries Government Documents Department

Northward Market Extension for Passive Solar Water Heaters by Using Pipe Freeze Protection with Freeze-Tolerant Piping: Preprint

Description: Conference paper regarding research in freeze-protection methods that could extend market acceptance for passive solar domestic water heating systems in more northern climates if the U.S.
Date: May 1, 2006
Creator: Burch, J.; Heater, M.; Brandemuhl, M. & Krarti, M.
Partner: UNT Libraries Government Documents Department

Report on Solar Pool Heating Quantitative Survey

Description: This report details the results of a quantitative research study undertaken to better understand the marketplace for solar pool-heating systems from the perspective of residential pool owners.
Date: May 6, 1999
Creator: Synapse Infusion Group, Inc. (Westlake Village, California)
Partner: UNT Libraries Government Documents Department

Utility solar water heating workshops

Description: The objective of this project was to explore the problems and opportunities for utility participation with solar water heating as a DSM measure. Expected benefits from the workshops included an increased awareness and interest by utilities in solar water heating as well as greater understanding by federal research and policy officials of utility perspectives for purposes of planning and programming. Ultimately, the project could result in better information transfer, increased implementation of solar water heating programs, greater penetration of solar systems, and more effective research projects. The objective of the workshops was satisfied. Each workshop succeeded in exploring the problems and opportunities for utility participation with solar water heating as a DSM option. The participants provided a range of ideas and suggestions regarding useful next steps for utilities and NREL. According to evaluations, the participants believed the workshops were very valuable, and they returned to their utilities with new information, ideas, and commitment.
Date: January 1, 1992
Creator: Barrett, L. B.
Partner: UNT Libraries Government Documents Department

Low-Cost Solar Water Heating Research and Development Roadmap

Description: The market environment for solar water heating technology has changed substantially with the successful introduction of heat pump water heaters (HPWHs). The addition of this energy-efficient technology to the market increases direct competition with solar water heaters (SWHs) for available energy savings. It is therefore essential to understand which segment of the market is best suited for HPWHs and focus the development of innovative, low-cost SWHs in the market segment where the largest opportunities exist. To evaluate cost and performance tradeoffs between high performance hot water heating systems, annual energy simulations were run using the program, TRNSYS, and analysis was performed to compare the energy savings associated with HPWH and SWH technologies to conventional methods of water heating.
Date: August 1, 2012
Creator: Hudon, K.; Merrigan, T.; Burch, J. & Maguire, J.
Partner: UNT Libraries Government Documents Department

Break-Even Cost for Residential Solar Water Heating in the United States: Key Drivers and Sensitivities

Description: This paper examines the break-even cost for residential rooftop solar water heating (SWH) technology, defined as the point where the cost of the energy saved with a SWH system equals the cost of a conventional heating fuel purchased from the grid (either electricity or natural gas). We examine the break-even cost for the largest 1,000 electric and natural gas utilities serving residential customers in the United States as of 2008. Currently, the break-even cost of SWH in the United States varies by more than a factor of five for both electricity and natural gas, despite a much smaller variation in the amount of energy saved by the systems (a factor of approximately one and a half). The break-even price for natural gas is lower than that for electricity due to a lower fuel cost. We also consider the relationship between SWH price and solar fraction and examine the key drivers behind break-even costs. Overall, the key drivers of the break-even cost of SWH are a combination of fuel price, local incentives, and technical factors including the solar resource location, system size, and hot water draw.
Date: February 1, 2011
Creator: Cassard, H.; Denholm, P. & Ong, S.
Partner: UNT Libraries Government Documents Department

Utility solar water heating workshops

Description: The objective of this project was to explore the problems and opportunities for utility participation with solar water heating as a DSM measure. Expected benefits from the workshops included an increased awareness and interest by utilities in solar water heating as well as greater understanding by federal research and policy officials of utility perspectives for purposes of planning and programming. Ultimately, the project could result in better information transfer, increased implementation of solar water heating programs, greater penetration of solar systems, and more effective research projects. The objective of the workshops was satisfied. Each workshop succeeded in exploring the problems and opportunities for utility participation with solar water heating as a DSM option. The participants provided a range of ideas and suggestions regarding useful next steps for utilities and NREL. According to evaluations, the participants believed the workshops were very valuable, and they returned to their utilities with new information, ideas, and commitment.
Date: January 1, 1992
Creator: Barrett, L.B. (Barrett Consulting Associates, Inc., Colorado Springs, CO (United States))
Partner: UNT Libraries Government Documents Department

Marketing and promoting solar water heaters to home builders

Description: This is the final report of a four-task project to develop a marketing plan designed for businesses interested in marketing solar water heaters in the new home industry. This report outlines suggested marketing communication materials and other promotional tools focused on selling products to the new home builder. Information relevant to promoting products to the new home buyer is also included.
Date: December 6, 1999
Creator: Keller, C. & Ghent, P.
Partner: UNT Libraries Government Documents Department

A comprehensive review of market research on solar water heaters

Description: This is the second report of a four-task project to develop a marketing plan designed for businesses interested in marketing solar water heaters in the new home industry. The objective of this task is to identify key elements in previous studies on the marketing of solar water heaters in the new home industry. This review includes studies performed by FOCUS Marketing Services, the National Association of Home Builders Research Center, Symmetrics Marketing Corporation, and the California Energy Commission.
Date: November 1, 1999
Creator: Ghent, P. & Keller, C.
Partner: UNT Libraries Government Documents Department

Testing and analysis of load-side immersed heat exchangers for solar domestic hot water systems

Description: This report describes work to determine the performance of load-side heat exchangers for use in residential solar domestic hot water systems. We measured the performance of four heat exchangers: a smooth coil and a finned coil having heat transfer areas of 2.5 m/sup 2/ (26 ft/sup 2/) and those having areas of 1.7 m/sup 2/ (19 ft/sup 2/). A numerical model using the thermal network program MITAS was constructed, and results were compared to the experimental results. Research showed a smooth coil with only 70% of the surface area of a finned coil performed better than the finned coil. Also, load-side heat exchangers can maintain and enhance stratification in storage tanks, permitting the use of control strategies that take advantage of stratified storage tanks to increase system performance. The analytical model, which agreed reasonably well with the experimental results, was used to vary heat exchanger flow rate and area and initial tank temperature for both a smooth- and a finned-coil heat exchanger. Increasing the heat exchanger flow rate and area results in higher heat transfer rates but not necessarily optimal performance. Lower initial tank temperatures resulted in reduced tank stratification. The smooth heat exchanger outperformed the finned heat exchanger with the same outside surface area. 15 refs., 37 figs., 9 tabs.
Date: October 1, 1987
Creator: Farrington, R.B. & Bingham, C.E.
Partner: UNT Libraries Government Documents Department

Colorado State University program for developing, testing, evaluation and optimizing solar heating and cooling systems. Project status report, August--September 1993

Description: This report describes activities of the Colorado State University program on solar heating and cooling systems for the months of August and September 1993. The topics include: rating and certification of domestic water heating systems, unique solar system components, advanced residential solar domestic hot water systems, and desiccant cooling of buildings.
Date: September 1, 1993
Partner: UNT Libraries Government Documents Department

SOLTECH 92 proceedings: Solar Process Heat Program. Volume 1

Description: This document is a limited Proceedings, documenting the presentations given at the symposia conducted by the US Department of Energy`s (DOE) Solar Industrial Program and Solar Thermal Electrical Program at SOLTECH92. The SOLTECH92 national solar energy conference was held in Albuquerque, New Mexico during the period February 17--20, 1992. The National Renewable Energy Laboratory manages the Solar Industrial Program; Sandia National Laboratories (Albuquerque) manages the Solar Thermal Electric Program. The symposia sessions were as follows: (1) Solar Industrial Program and Solar Thermal Electric Program Overviews, (2) Solar Process Heat Applications, (3) Solar Decontamination of Water and Soil; (4) Solar Building Technologies, (5) Solar Thermal Electric Systems, (6) PV Applications and Technologies. For each presentation given in these symposia, these Proceedings provide a one- to two-page abstract and copies of the viewgraphs and/or 35mm slides utilized by the speaker. Some speakers provided additional materials in the interest of completeness. The materials presented in this document were not subjected to a peer review process.
Date: March 1, 1992
Partner: UNT Libraries Government Documents Department