Effect of ambient air temperature on the performance of regenerative air preheater of pulverised coal fired boilers

Chittatosh Bhattacharya and Bidesh Sengupta

International Journal of Energy Technology and Policy, 2016, vol. 12, issue 2, 136-153

Abstract: The air preheater (APH) is the last heat trap in flue gas path of boiler. Efficient performance of APH is possible with efficient pre-combustion coal drying and effective combustion in the furnace. The characteristic of ambient air temperature (AAT) has a significant role on the efficiency of heat transfer in APH. The change in AAT in turn changes heat capacity of air that depends on relative humidity (RH) and air density. An increase in AAT will reduce the waste heat recovery opportunity, if sufficient reserve capacity of heat exchange is not available in APH. Besides, change in AAT will have an impact on the power consumption of the fans and leakage through different seals. In this paper, the effect of these factors due to change in AAT is evaluated to assess the performance of regenerative APH with reference to a field study of 135 MWe subcritical steam power plant.

Keywords: regenerative air preheaters; ambient air temperature; relative humidity; air density; moisture; coal drying; drying energy economics; pulverised coal; coal fired boilers; combustion; heat transfer; waste heat recovery; energy consumption; fans; seal leakage; performance evaluation; subcritical steam power plants. (search for similar items in EconPapers)
Date: 2016
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.inderscience.com/link.php?id=75672 (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:ids:ijetpo:v:12:y:2016:i:2:p:136-153

Access Statistics for this article

More articles in International Journal of Energy Technology and Policy from Inderscience Enterprises Ltd
Bibliographic data for series maintained by Sarah Parker ().