2024-03-29T12:55:52Z
https://kitami-it.repo.nii.ac.jp/oai
oai:kitami-it.repo.nii.ac.jp:00007587
2022-12-13T02:20:57Z
1:87
Effect of ambient temperature on the performance of micro gas turbine with cogeneration system in cold region
BASRAWI, Firdaus
YAMADA, Takanobu
NAKANISHI, Kimio
NAING, Soe
Micro gas turbine
Cogeneration system
Inlet air temperature
Energy
Efficiency
Biomass
Biogas
A small-scale prime mover especially micro gas turbine is a key factor in order to widespread the utilization of biogas. It is well known that a performance of large-scale gas turbine is greatly affected by its inlet air temperature. However, the effect of the inlet air temperature on the performance of small-scale gas turbine (micro gas turbine) is not widely reported. The purpose of the present study is to investigate the effect of the inlet air temperature on the performance of a micro gas turbine (MGT) with cogeneration system (CGS) arrangement. An analysis model of the MGT-CGS was set up on the basis of experimental results obtained in a previous study and a manufacturer standard data, and it was analysed under a various ambient temperature condition in a cold region. The results show that when ambient temperature increased, electrical efficiency η_<ele> of the MGT decreased but exhaust heat recovery η_<ehr> increased. It was also found that when ambient temperature increased, exhaust heat to mass flow rate Q_<exe>/m_e and exhaust heat recovery to mass flow rate Q_<ehr>/m_e increased, with maximum ratios of 259 kJ/kg and 200 kJ/kg, respectively were found in summer peak. Furthermore, it was also found that the exhaust heat to power ratio Q_<exe>/P_e had a similar characteristic with exhaust heat recovery to power ratio Q_<ehr>/P_e. Q_<exe>/P_e and Q_<ehr>/P_e increased with the increase of ambient temperature. Moreover, although different values of total energy efficiency, fuel energy saving and CO_2 reduction for every temperature condition were found comparing with a two conventional system that were considered, the MGT-CGS could annually reduce 30,000-80,000 m^3/y of fuel consumption and 35?94 t-CO_2/y of CO_2 emissions.
journal article
Elsevier
2011-05
application/pdf
Applied Thermal Engineering
6-7
31
1058
1067
https://kitami-it.repo.nii.ac.jp/record/7587/files/No34.pdf
eng
open access