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Е.Г. Липихин, Д.В. Шевелев
10
Инженерный журнал: наука и инновации
# 10·2016
Thermodynamic efficiency investigation
for a micro-CHP system featuring a gas microturbine
with an altered process sequence
© E.G. Lipikhin, D.V. Shevelev
Bauman Moscow State Technical University, Kaluga branch,
Kaluga, 248600, Russia
We consider a cogeneration plant featuring a gas microturbine with an altered process
sequence. We describe the flow diagram of our plant, its principle of operation and pri-
mary advantages: high heat energy conversion efficiency, fuel combustion at atmospheric
pressure, absence of either a combustion chamber proper or a high-temperature micro-
turbine gas-to-air heat exchanger. We supply thermodynamic parameter calculation
results for our diagram operating in both traditional and low-temperature heating sys-
tems. Analysis of the results obtained shows that this cogeneration plant is feasible and is
able to satisfy heating and electricity demands with microturbine parameters being char-
acteristic of commercial centrifugal compressors used in conjunction with internal com-
bustion engines. As a conclusion, we select the optimum microturbine pressure ratio to
be π
t
= 1.6…1.8, since it achieves a high micro-CHP thermal output with acceptable micro-
turbine parameters.
Keywords:
micro-CHP, reverse Brayton cycle, gas microturbine.
REFERENCES
[1]
Ametistov E.V., Klimenko A.V., Leontev A.I., Milman O.O., Favorskiy O.N.,
Fedorov V.A. et al.
Izvestiya RAN. Energetika
—
Proceedings of the Russian
Academy of Sciences. Power Engineering Journal
, 2003, no. 1, pp. 107–117.
[2]
Favorskiy O.N., Leontev A.I., Fedorov V.A., Milman O.O.
Teploenergetika —
Thermal Engineering
, 2003, no. 9, pp. 19–21.
[3]
Innovatsii v Rossii. Tekhnologicheskaya platforma “Malaya raspredelennaya
energetika”
[Innovations in Russia. The "Small-scale distributed power
generation" technology platform].
Available at:
http://innovation.gov.ru/node/3459(accessed 16 March, 2016).
[4]
Pehnt M., Cames M., Fisher C. et al.
Micro Cogeneration. Towards
Decentralized Energy System
. Berlin; Heidelberg, Springler-Verlag, 2006, 346 p.
[5]
Beith R.
Small and micro combined heat and power (CHP) systems. Advanced
design, performance, materials and applications
. Woodhead Publishing, Ltd.,
2011, 528 p.
[6]
Tumashev R.Z., Bodrov N.G.
Inzhenernyy zhurnal: nauka i innovatsii —
Engineering Journal: Science and Innovation
, 2012, iss. 10.
DOI: 10.18698/2308-6033-2012-10-401
[7]
Vermes G., Beér J.M.
Ambient Pressure Gas Turbine System
. US Patent,
no. 6298654 B1, 2001.
[8]
GOST 54961–2012. Sistemy gazoraspredelitelnye. Seti gazopotrebleniya.
Obshchie trebovaniya k ekspluatatsii. Ekspluatatsionnaya dokumentatsiya
[State
Standard 54961–2012. Gas distribution systems. Gas networks. General
requirements for usage]. Moscow, Standartinform Publ., 2013, 53 p.