U.S. DEPARTMENT OF ENERGY

WORKSHOP ON STANDARDS FOR WATER HEATERS

U.S. Department of Energy

1000 Independence Avenue, S.W.

Washington, DC 20585

(Rm. IE-245)

November 9-10, 1998

Workshop Purpose: The purpose of the workshop is to discuss the analyses and computer

models to be used in support of the Department's rulemaking regarding

energy conservation standards for water heaters, including: engineering,

life-cycle-cost (LCC), national energy savings (NES), manufacturing

impacts, consumer sub-group, environmental and utility analyses. The

preliminary results from the water heater insulation test at the National

Institute of Standards and Technology (NIST) will also be discussed.

Workshop Outcomes: To receive comments on the analysis results from the engineering and lifecycle-cost analyses; to discuss and comment on the analysis methodologies

used for the national energy savings, consumer, environmental, utility and

manufacturing impacts analyses; and to discuss the water heater insulation

test results.

Proposed Agenda

November 9

9:00 - 9:15 Introduction and Review Agenda

9:15 - 9:30 Opening Remarks and Overview of the Water Heater Rulemaking Schedule

Break (as appropriate)

9:30 - 12:15 Engineering Analysis Methodology and Results: Presentation and discussion of the cost

efficiency spreadsheets developed for the engineering analysis. Discussion of the

derivation of the retail price database and manufacturing markups, discussion of the

placeholder cost for preventing ignition of flammable vapors, venting costs and the

simulation models WATSIM and TANK. Presentation of the preliminary costs, energy

savings and simple payback.

12:15 - 1:15 Lunch (On Your Own)

1:15 - 4:00 LCC: Discussion of the life-cycle-cost spreadsheet model that accounts for variability

of key criteria, such as household characteristics related to hot water use from the

Residential Energy Consumption Survey (RECS), discount rates, energy prices, and

manufacturing costs. Preliminary life-cycle costs and energy savings for each design

option and design option combinations.

EE-RM-97-900 COMMENT 38BB
U.S. DEPARTMENT OF ENERGY

WORKSHOP ON STANDARDS FOR WATER HEATERS

-continuedBreak (as appropriate)

4:00 - 4:30 Marginal Energy Rates: Overview of DOE's incorporation of the Advisory

Committee's recommendations on marginal energy rates into the rulemaking.

4:30- 4:45 Summary discussion and Adjournment

November 10

8:30 - 8:45 Review of November 9 Discussions and Agenda Review

8:45 - 10:00 Manufacturer Impacts: Presentation and discussion of the spreadsheet using the

Government Regulatory Impact Model (GRIM), including the approaches used to

develop the strawman company data and the water heater manufacturer interview

approach.

10:00-10:15 Break

10:15 - 11:00 National Energy Savings: Presentation of the baseline results, methodology, the NES

spreadsheet, water heater lifetime, shipment data and preliminary methods used to

determine the competitive impacts of proposed standards levels on different fuel types.

11:00 - 11:15 Consumer Sub-group: Discussion of the assumptions, analysis approach, and

preliminary results from the RECS database.

11:15 - 11:45 Environmental and Utility Impacts: Presentation and discussion of the analysis,

specifically, the National Energy Modeling System developed by the Energy

Information Administration and the modifications to it.

11:45 - 12:15 Technical Research: Presentation and discussion of preliminary NIST test results using

water and HFC-245fa as blowing agents for water heater insulation.

12:15 - 12:30 Next Steps: Issues to be resolved, identification of additional data requirements,

stakeholder concerns, and final comments.

12:30 Adjournment

EE-RM-97-900 COMMENT 38BB