Tubular heating system development. Topical report, November 1990-June 1992
An improved warm air furnace heating section suited for gas engine, single package unitary products was developed. The initial application was in one manufacturer's 15-Ton engine driven rooftop heating/cooling unit and other manufacturers are expected to follow with 25-Ton units. A heat exchanger analytical model was developed that accurately predicted heat exchanger performance and minimized project experimental work. A comparison of experimental and calculated data showed the model predicted thermal performance very well. The use of the model led to the design of a modular heating section that included the diameter, length and shape of the fire tubes and the arrangement of the fire tubes for optimum heat transfer characteristics. The heating section has a steady state thermal efficiency in excess of 80 percent and NOx emissions less than 40 ng/J of useful heat output.
- Research Organization:
- American Gas Association Labs., Cleveland, OH (United States)
- OSTI ID:
- 6258321
- Report Number(s):
- PB-93-207991/XAB; CNN: GRI-5086-293-1418
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
SPACE HEATERS
THERMAL EFFICIENCY
GAS APPLIANCES
HEAT EXCHANGERS
INTERNAL COMBUSTION ENGINES
MATHEMATICAL MODELS
NATURAL GAS
NITROGEN OXIDES
ROOFS
SPACE HVAC SYSTEMS
APPLIANCES
CHALCOGENIDES
EFFICIENCY
ENERGY SOURCES
ENERGY SYSTEMS
ENGINES
EQUIPMENT
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HEAT ENGINES
HEATERS
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
320106* - Energy Conservation
Consumption
& Utilization- Building Equipment- (1987-)
034000 - Natural Gas- Combustion