![]() ![]() ![]() Also presented is an account of the test design, procedures for site selection, inspection, data acquisition and analysis, comparisons of quality of combustion, efficiency, and energy consumption characteristics of these installations between pre- and post-retrofit conditions.Successful, reliable operation of steam generation equipment requires the application of the best available methods to prevent scale and corrosion. For retrofit modifications that included gas input derating (with or without secondary air adjustment and with or without vent restrictor present in the vent system of the furnace), the gas savings obtained could simply but accurately be correlated with the change in steady-state efficiency, level of gas input derating, and vent-pipe area reduction. Results for several groups of sites (similiarly retrofit-modified by a single, double or quadruple retrofit) are presented and show that the range of more » statistically significant gas savings, obtained varied between 0.5 and 13.2% for warm-air installations, and between 2.8 and 9.9% for hot-water boiler installations. ![]() This study, known by the acronym SHEIP (for Space Heating Efficiency Improvement Program) dealt with the development of appropriate procedures for the retrofitting, the acquisition, and analysis of field-test data from over 2650 test sites monitored by 67 participating gas companies from the 48 contiguous states and a province in Canada. Results are presented from a recently completed 3-yr field study designed to assess the energy conservation effectiveness of retrofitting central gas-fired space heating furnaces and boilers. Finally, recommendations are offered concerning possible actions to improve predictions of furnace seasonal efficiency. A general conclusion is that purely analytical estimations of seasonal furnace efficiencies are not generally reliable principally because of: (1) a variety of furnace designs and (2) the different infiltration characteristics of homes. The well-established energy estimating methods of the American Society of Heating, Refrigeration, and Air-Conditioning Engineers are described and evaluated, and sources of inefficiency related to these methods are presented. The detailed discussion of these four models is preceded by a brief description of the characteristics of present gas-fired furnaces and a discussion of the efficiency terms more » used in this report. In this report, four computer models for determining such efficiency, the Honeywell HFLAME model, the National Bureau of Standards DEPAF model, the Institute of Gas Technology SPACE-FI model, and the Carrier Corporation model, are separately described, discussed, and evaluated in relation to their use in predicting seasonal performance of residential gas-fired heating systems. Several methods for determining the seasonal efficiency and operating costs of residential fossil-fuel-fired heating systems are found in the literature. (USA) OSTI Identifier: 7295419 Report Number(s): BNL-50647 DOE Contract Number: EY-76-C-02-0016 Resource Type: Technical Report Country of Publication: United States Language: English Subject: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION 29 ENERGY PLANNING, POLICY AND ECONOMY 02 PETROLEUM 03 NATURAL GAS BOILERS EFFICIENCY FURNACES SPACE HEATING ECONOMICS WATER HEATERS CONSUMPTION RATES COST ENERGY CONSUMPTION LOAD MANAGEMENT NATURAL GAS OPERATION PETROLEUM SEASONAL VARIATIONS USES WEATHER APPLIANCES ELECTRIC APPLIANCES ENERGY SOURCES FLUIDS FOSSIL FUELS FUEL GAS FUELS GAS APPLIANCES GASES HEATERS HEATING MANAGEMENT VARIATIONS 320100* - Energy Conservation, Consumption, & Utilization- Buildings 290200 - Energy Planning & Policy- Economics & Sociology 298000 - Energy Planning & Policy- Consumption & Utilization 025000 - Petroleum- Combustion 034000 - Natural Gas- = , Publication Date: Tue Mar 01 00:00: Research Org.: Brookhaven National Lab., Upton, N.Y. ![]()
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