THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE
Yıl: 2021 Cilt: 41 Sayı: 2 Sayfa Aralığı: 249 - 263 Metin Dili: İngilizce DOI: 10.47480/isibted.1025949 İndeks Tarihi: 21-06-2022
THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE
Öz: Theoretical and experimental investigations indicate that at high loads such as 3/4 throttling or more and
high speeds such as 3000 rpm or more, the exhaust gas temperatures of the Internal Combustion engines are about 900-
1000 K. The amount of heat wasted with exhaust gas of the Internal Combustion engines is equivalent to the power of
them. By considering this feature of the Internal Combustion engines, a Hybrid engine consisting of an Internal
Combustion (IC) engine and a gamma type Stirling engine was proposed and analyzed from the thermodynamic point
of view. Hybrid engine is formed by combining the Stirling and IC engines via a common crankshaft and a common
cylinder. The Internal Combustion engine may be a four stroke Diesel engine having an unconventional piston
consisting of a crown and a rod. Via using this kind of pistons, two chambers are created in the same cylinder where
one of them take part at above of the piston crown, while the other is taking part at below of the piston crown. In the
combined engine presented here, the chamber at below of the piston crown is used as the expansion volume of the
Stirling engine while the other chamber is being used as operational volume of the Diesel engine. In this study the
thermodynamic performance of the Hybrid engine was investigated via using statistical values of common Diesel
engines. For Stirling engine; 800 K heater surface temperature, 392 K cooler surface temperature, 800 W/$m^2$K heat
transfer coefficient in regenerator, 300 W/$m^2$K heat transfer coefficient in cooler and heater, 250 rad/s engine speed
and 12.5 bar air charging pressure were used as principal inputs. The output power of the Diesel engine was assumed
to be 120 kW which provides 120 kW heat to Stirling engine. The heat transfer areas of cooler, heater and regenerator
were optimized as 0.33 $m^2$
, 0.6 $m^2$
and 4.6 $m^2$
respectively. The optimum thermal efficiency and power of the Stirling
engine were determined as 47 % and 24 kW. The total thermal efficiency of the combined engine is expected to increase
6 % compared to the stand-alone Internal Combustion engine. For 12.5 bar average gas pressure in the cylinder of
Diesel engine, the working fluid mass in the Stirling engine was determined as 17g.
Anahtar Kelime: BİR DİZEL MOTORUNUN EGZOZ GAZI İLE ENERJİLENDİRİLEN STIRLINGMOTORUNUN ISIL PERFORMANS ANALİZLERİ
Öz: Teorik ve deneysel birçok araştırma içten yanmalı motorlarda ¾ ve daha fazla gaz kelebek açıklığında, 3000 rpm
ve daha yüksek devirlerde egzoz gazı sıcaklığının 900-1000 K’e ulaştığını göstermektedir. İçten yanmalı motorlarda egzoz
gazı ile atılan ısı yaklaşık olarak motorların güçlerine eşit miktardadır. İçten yanmalı motorların bu özellikleri göz önünde
bulundurularak, bu çalışmada içten yanmalı bir motor ve bir stirling motorundan meydana gelen hibrit bir motorun
termodinamik analizlerinin yapılması amaçlanmıştır. Bu hibrit motor; içten yanmalı motor ile stirling motorunun krank
mili ve silindirinin ortak kullanımı ile meydana gelmektedir. İçten yanmalı motor geleneksel olmayan bir piston ve biyel
mekanizmasından oluşan 4 zamanlı bir dizel motordur. Bu tip pistonlar kullanılarak aynı silindir içerisinde biri piston
tepesinin üstünde diğeri pistonun alt tarafında olmak üzere iki oda oluşturulmaktadır. Bu çalışmada sunulan hibrit motorda
pistonun altında kalan hacim stirling motorun genleşme hacmi olarak kullanılırken diğer oda dizel motorun çalışma hacmi
olarak kullanılmaktadır. Bu çalışmada yaygın kullanımda olan bir dizel motorunun istatistiksel verileri kullanılarak stirling
motorunun termodinamik performansı incelenmiştir. Stirling motoru için analiz girdileri olarak; 800 K ısıtıcı yüzey
sıcaklığı, 392 K soğutucu yüzey sıcaklığı, 800 W/$m^2$K rejeneratörün ısı transfer katsayısı, 300 W/$m^2$K ısıtıcı ve
soğutucunun ısı transfer katsayısı, 250 rad/s motor hızı ve 12.5 bar hava şarj basıncı kullanılmıştır. Dizel motorunun çıkış
gücünün 120kW olduğu varsayılarak Stirling motoru için de 120 kW’lık giriş sıcaklık değeri kabul edilmiştir. Soğutucu,
ısıtıcı ve rejeneratörün ısı transfer alanları sırası ile 0,33 $m^2$
, 0,6 m2 ve 4,6 $m^2$ olarak optimize edilmiştir. Stirling motorunun
optimum termal verimliliği ve motor gücü % 47 ve 24 kW olarak belirlenmiştir. Hibrit motorun toplam termal verimliliği
yalnız içten yanalı motorun sağladığı değer ile karşılaştırıldığında %6 artmıştır. Dizel motorun silindi içerisindeki ortalama
gaz basıncının 12,5 bar olduğu durumda Stirling motorundaki çalışma akışkanının kütlesi 17 g olarak belirlenmiştir.
Anahtar Kelime: Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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APA | DÜZGÜN M, Karabulut H (2021). THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE. , 249 - 263. 10.47480/isibted.1025949 |
Chicago | DÜZGÜN Mesut,Karabulut Halit THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE. (2021): 249 - 263. 10.47480/isibted.1025949 |
MLA | DÜZGÜN Mesut,Karabulut Halit THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE. , 2021, ss.249 - 263. 10.47480/isibted.1025949 |
AMA | DÜZGÜN M,Karabulut H THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE. . 2021; 249 - 263. 10.47480/isibted.1025949 |
Vancouver | DÜZGÜN M,Karabulut H THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE. . 2021; 249 - 263. 10.47480/isibted.1025949 |
IEEE | DÜZGÜN M,Karabulut H "THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE." , ss.249 - 263, 2021. 10.47480/isibted.1025949 |
ISNAD | DÜZGÜN, Mesut - Karabulut, Halit. "THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE". (2021), 249-263. https://doi.org/10.47480/isibted.1025949 |
APA | DÜZGÜN M, Karabulut H (2021). THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE. Isı Bilimi ve Tekniği Dergisi, 41(2), 249 - 263. 10.47480/isibted.1025949 |
Chicago | DÜZGÜN Mesut,Karabulut Halit THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE. Isı Bilimi ve Tekniği Dergisi 41, no.2 (2021): 249 - 263. 10.47480/isibted.1025949 |
MLA | DÜZGÜN Mesut,Karabulut Halit THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE. Isı Bilimi ve Tekniği Dergisi, vol.41, no.2, 2021, ss.249 - 263. 10.47480/isibted.1025949 |
AMA | DÜZGÜN M,Karabulut H THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE. Isı Bilimi ve Tekniği Dergisi. 2021; 41(2): 249 - 263. 10.47480/isibted.1025949 |
Vancouver | DÜZGÜN M,Karabulut H THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE. Isı Bilimi ve Tekniği Dergisi. 2021; 41(2): 249 - 263. 10.47480/isibted.1025949 |
IEEE | DÜZGÜN M,Karabulut H "THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE." Isı Bilimi ve Tekniği Dergisi, 41, ss.249 - 263, 2021. 10.47480/isibted.1025949 |
ISNAD | DÜZGÜN, Mesut - Karabulut, Halit. "THERMAL PERFORMANCE ANALYSIS OF A STIRLING ENGINE ENERGIZED WITH EXHAUST GAS OF A DIESEL ENGINE". Isı Bilimi ve Tekniği Dergisi 41/2 (2021), 249-263. https://doi.org/10.47480/isibted.1025949 |