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Chimney related energy losses in oil-fired heating systems: Configuration effects and venting alternatives

Technical Report ·
OSTI ID:5892210
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Conventional venting systems for oil-fired residential heating equipment include the flue connector, a barometric damper, and the chimney. This venting arrangement is directly responsible for some of the annual energy losses associated with these heating installations. In the work described in this report a study of the relevant characteristics of burners and dampers was done to permit these energy losses to be estimated as a function of the installation details. The purpose of this work is to determine the potential energy savings which might be realized from alternative venting methods in a wide range of situations. The basic draft/flow characteristics of barometric dampers were measured using a flow tunnel arrangement under cold (no combustion) conditions. A range of damper diameters and draft settings were used. Off-cycle draft/flow relations for several burners and heating units with the burner ports sealed were also measured over a range of conditions. Recently, oil burners have become available which have significantly higher static pressure fans. The excess air level provided by these burners is much less sensitive to variations in draft and burners of this type might be operated without a barometric damper. Burner fan performance curves for both high and low static pressure units have been measured. Flows through the heating unit and barometric damper flows have been calculated during the on- and off-cycle for a range of configurations as a function of outdoor temperature. The annual energy losses due to the venting system were calculated using a bin method. The calculated flows were compared with available field data. To supplement the available data some additional field measurements were taken during this project and are described in this report. 19 refs., 42 figs., 7 tabs.
Research Organization:
Brookhaven National Lab., Upton, NY (USA)
Sponsoring Organization:
DOE; USDOE, Washington, DC (USA)
DOE Contract Number:
AC02-76CH00016
OSTI ID:
5892210
Report Number(s):
BNL-46021; ON: DE91011713
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
025000 -- Petroleum-- Combustion
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
BLOWERS
BUILDING CODES
BUILDINGS
BURNERS
CALCULATION METHODS
CHIMNEYS
CONTROL EQUIPMENT
DESIGN
DRAFT CONTROL SYSTEMS
ENERGY CONSERVATION
ENERGY CONSUMPTION
ENERGY LOSSES
EQUIPMENT
FLOW RATE
FLOW REGULATORS
FLUID FLOW
FUEL CONSUMPTION
FURNACES
GAS FLOW
HEAT LOSSES
LOSSES
OIL FURNACES
PERFORMANCE
RESIDENTIAL BUILDINGS
TEMPERATURE DEPENDENCE
VENTILATION
VENTILATION SYSTEMS
WEATHER