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Impact of burner cycle time in liquid fuel pressure burners on the thermal efficiency of heating appliances
Butala, Vincenc (Author), Muhič, Simon (Author)

URLURL - Presentation file, Visit http://www.elsevier.com/locate/energy This link opens in a new window

Abstract
Heating appliances used in buildings are designed according to building's heating load as a function of outdoor design air temperature. Usually this temperature is quite lower than the average external air temperature during the heating season. For most of the heating season, heating appliances do not operate at their nominal heating capacity. This requires boilers to operate at a lower thermal efficiency. Furthermore, on-off cycling of the pressure oil burner increases the amount of emissions of harmful substances into the flue gases. In many systems, a built-in burner is harmonized to the heating power of a boiler. The heating appliance's thermal efficiency appears to depend on burner cycle time and boiler heating load. Thermal efficiency of the heating appliance drops during shorter burner cycle times. The shortest burner cycle time appears at approx. 50% of the boiler heating load. Interestingly, in cases where the boiler heating load is not equivalent to rated (design) boiler capacity, two methods of calculating boiler thermal efficiency produce different results.

Language:English
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2001
Number of pages:299-306
Numbering:Vol. 26, no. 3
UDC:697:004.94
ISSN on article:0360-5442
COBISS.SI-ID:4300571 Link is opened in a new window
Views:369
Downloads:194
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Record is a part of a journal

Title:Energy
Shortened title:Energy
Publisher:Pergamon Press
ISSN:0360-5442
COBISS.SI-ID:25394688 This link opens in a new window

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