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| 1 | Feasibility of Pulse Combustion in Micro Gas Turbines显示文摘In gas turbines, a fast decrease of efficiency appears when the output decreases; the efficiency of a large gas turbine (20…30 MW) is in the order of 40 %, the efficiency of a 30 kW gas turbine with a recuperator is in the order of 25 %, but the efficiency of a very small gas turbine (2…6 kW) in the order of 4…6 % (or 8…12 % with an optimal recuperator). This is mainly a result of the efficiency decrease in kinetic compressors, due to the Reynolds number effect. Losses in decelerating flow in a flow passage are sensitive to the Reynolds number effects. In contrary to the compression, the efficiency of expansion in turbines is not so sensitive to the Reynolds number; very small turbines are made with rather good efficiency because the flow acceleration stabilizes the boundary layer. This study presents a system where the kinetic compressor of a gas turbine is replaced with a pulse combustor. The combustor is filled with a combustible gas mixture, ignited, and the generated high pressure gas is expanded in the turbine. The process is repeated frequently, thus producing a pulsating flow to the turbine; or almost a uniform flow, if several parallel combustors are used and triggered alternately in a proper way. Almost all the compression work is made by the temperature increase from the combustion. This gas turbine type is investigated theoretically and its combustor also experimentally with the conclusion that in a 2 kW power size, the pulse flow gas turbine is not as attractive as expected due to the big size and weight of parallel combustors and due to the efficiency being in the order of 8 % to 10 %. However, in special applications having a very low power demand, below 1000 W, this solution has better properties when compared to the conventional gas turbine and it could be worth of a more detailed investigation. | Juha Honkatukia Esa Saari Timo Knuuttila Jaakko Larjola Jari Backman | 2012 | Journal of Thermal Science2012，21，5： | 2 |
| 2 | Effect of the Molecular Structure of Polymer Dispersants on Limestone Suspension Properties in Fine Grinding显示文摘 | Katja Ohenoja Juha Saari Mirja Illikainen Jouko Niinimaeki | 2013 | Journal of Chemistry and Chemical Engineering2013，7，7： | 2 |
| 3 | Population Pharmacokinetic Modeling of Hydromorphone in Cardiac Surgery Patients during Postoperative Pain Therapy显示文摘 | Christian Jeleazcov Teijo I. Saari Harald Ihmsen Jan Mell Katharina Fr?hlich Ljubica Krajinovic J?rg Fechner Jürgen Schüttler | 2014 | Anesthesiology2014，，2： | 2 |
| 4 | A4-fold risk of metabolie syndrome in patients with schizophrenia:the Northern Finland 1966 birth cohort study显示文摘 | Saari K Linddeman S ViiloKM | 2005 | J Clin Psychiat2005，66，5： | 1 |
| 5 | Mycotrophy of crops in rotation and soil amendment with peatinfluence the abundance and effectiveness of indigenous arbuscular mycorrhizal fungi in field soil显示文摘 | Vestberg M Saari K Kukkonen S | 2009 | Mycorrhiza2009，，15： | 1 |
| 6 | Occurrence,predictors and clinical significance of autonomic neuropathy in NIDDM,ten year follow-up from the diagnosis显示文摘 | TOYRY J P NISKANEN L K MANLY SAARI M J | 1996 | Diabetes1996，45，： | 1 |
| 7 | Regional Lung Deposition and Clearance of 99mTc-labeled Beclomethasone-DLPC Liposome in Mild and Severe Asthma显示文摘 | S Marisanna Saari Mika T Vidgren Matti O Koskinen | 1998 | Chest1998，113，6： | 1 |
| 8 | The antioxidant functions of tocopherol and tocotrienol homologues in oils, fats and systems显示文摘 | Christine M Seppanen Qinghua Song a Saari Csalla- ny | 2010 | J Am Oil ChemSoc2010，87，5： | 1 |
| 9 | Effect of vorieonazole and flu-conazole on the pharmaeokinetics of intravenous fenta- nyl显示文摘 | Saari TI Lalne K Neuvonen M | 2008 | Eur J Clin Pharmacol2008，64，1： | 1 |
| 10 | Quality level assessment modelfor senior housing 显示文摘 | Saari A Tanskanen H | 2011 | Property Management2011，29，1： | 1 |
| 11 | On the implications of R&M 2000 environmental stress screening显示文摘 | Saari A E | | 0，，03： | 1 |
| 12 | Ruptured intracranial aneurysms:acute endovascular treatment with electrolytically detachable coils-a prospective randomized study显示文摘 | Vanninen R Koivisto T Saari T | 1999 | Radiology1999，211，2： | 1 |
| 13 | Evaluating the impact of extraction and cleanup parameter on the yield of total petroleum hydrocarbons in soil显示文摘 | SAARI E PERAMAKI P JALONEN J | 2008 | Anal Bioanal Chem2008，392，6： | 1 |
| 14 | Comparison of power plant steam condenser heat transfer models for on-line condition monitoring 显示文摘 | Jussi Saari Juha Kaikko | 2014 | Applied Thermal Engineering2014，62，1： | 1 |
| 15 | Updates in the treatment of ocular allergies显示文摘 | K. Matti Saari | 2010 | Journal of Asthma and Allergy . 2010 (defa)2010，，： | 1 |
| 16 | Outcomes of Early Endovascular Versus Surgical Treatment of Ruptured Cerebral Aneurysms: A Prospective Randomized Study显示文摘 | Timo Koivisto Ritva Vanninen Heleena Hurskainen Tapani Saari Juha Hernesniemi Matti Vapalahti | 2000 | Stroke: Journal of the American Heart Association2000，，10： | 1 |
| 17 | Intelligent control system of an industrial lime kiln process 显示文摘 | Jarvensivu M Saari K Jamsa -Jounela s L | 2001 | Control Engineering Practice2001，9，： | 1 |
| 18 | Planning of production reliability stress-screening programs显示文摘 | Fiorentino E Saari A E | | 0，，03： | 1 |
| 19 | The degree of decornpressive relief and its relation to clinical outcome in patients undergoing surgery for lumbar spinal stenosis显示文摘 | Herno A Saari T Suomalainen O | 1999 | Spine1999，24，： | 1 |
| 20 | CoppeR deficiency increases fibulin-5 but decreases cytochrome C oxidase VIb subunit expression in rat heart显示文摘 | Zeng H Saari J T Dahlen G M | 2006 | J lnorg Biochem2006，100，2： | 1 |
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