TY - GEN
T1 - Analysis of energy utilization on digestion biogas tri-generation in sewage treatment works
AU - Wang, Zhiyi
AU - Yang, Hongxing
AU - Peng, Jinqing
AU - Lu, Lin
PY - 2014/2/24
Y1 - 2014/2/24
N2 - This paper presents a combined heating, cooling, and power generation (tri-generation) system using sewage treatment digestion biogas according to the principle of energy gradient utilization technology. The tri-generation scheme adopts Lithium Bromide (LiBr) absorption cooling technology for office air conditioning, a biogas power generator, a heating system for digestion tanks. The performance analysis demonstrates that the scheme is practical in Hong Kong. Surplus cooling of the chiller is used to cool the inlet air of the generator for increasing the biogas power generator output. The electricity generation capacity can be increased by around 7 % annually owing to the inlet air cooler. For a case study of a local sewage water treatment work, the cooling capacity is equal to 422.72 MWh. The hot water meets the digester heating load at the same time. It is estimated that the economic payback period will be about 2 years.
AB - This paper presents a combined heating, cooling, and power generation (tri-generation) system using sewage treatment digestion biogas according to the principle of energy gradient utilization technology. The tri-generation scheme adopts Lithium Bromide (LiBr) absorption cooling technology for office air conditioning, a biogas power generator, a heating system for digestion tanks. The performance analysis demonstrates that the scheme is practical in Hong Kong. Surplus cooling of the chiller is used to cool the inlet air of the generator for increasing the biogas power generator output. The electricity generation capacity can be increased by around 7 % annually owing to the inlet air cooler. For a case study of a local sewage water treatment work, the cooling capacity is equal to 422.72 MWh. The hot water meets the digester heating load at the same time. It is estimated that the economic payback period will be about 2 years.
KW - Absorption chiller
KW - Biogas generator
KW - Inlet air cooling
KW - Sewage treatment plant
UR - http://www.scopus.com/inward/record.url?scp=84894178651&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-39581-9_3
DO - 10.1007/978-3-642-39581-9_3
M3 - Conference article published in proceeding or book
SN - 9783642395802
T3 - Lecture Notes in Electrical Engineering
SP - 27
EP - 35
BT - Proceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning
T2 - 8th International Symposium on Heating, Ventilation, and Air Conditioning, ISHVAC 2013
Y2 - 19 October 2013 through 21 October 2013
ER -