Journal
PROCESSES
Volume 8, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/pr8050500
Keywords
shell tube heat exchanger; design; analysis; poultry litter; energy; hot water; electricity; trailer temperature; temperature change; space heating
Categories
Funding
- Abell Foundation - School of Graduate Studies at Morgan State University
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Poultry litter is one type of biomass and waste generated from the farming process. This study performed a performance and process analysis of poultry litter to energy using the lab-scale shell and tube heat exchanger (STHE) system along with a Stirling engine and a swirling fluidized bed combustor (SFBC). The effects of tube shape, flow direction, and water flow rates on water and trailer temperature changes were investigated during the poultry litter co-combustion process. Energy flow analysis and emissions were also studied. Results showed that the water outlet temperature of 62.8 degrees Cin the twisted tube was higher than the straight tube case (58.3 degrees C) after 130 min of the co-combustion process. It was found that the counter-current direction had higher water temperature changes, higher logarithmic mean temperature difference (LMTD), and higher trailer temperature changes than the co-current direction. A water flow rate of 4.54 L/min showed adequate heat absorption in the lab-scale STHE system and heat rejection in the trailer. Results indicated that the lab-scale STHE system has a conversion efficiency of 42.3% and produces hot water (at about 63.9 degrees C) along with lower emissions. This research study confirmed that poultry litter can be used to generate energy (e.g., hot water and electricity) by using a lab-scale biomass conversion system for space heating applications.
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