Research Ac*vi*es Laboratory of Steam Boilers & Thermal plants - PowerPoint PPT Presentation

Laboratory of Steam Boilers and Thermal Plants Prof. Dr. –Ing. Emmanuel Kakaras Research Ac*vi*es Laboratory of Steam Boilers & Thermal plants Short Overview Prof. Dr.-Ing. Emmanuel Kakaras Assoc. Prof. Dr.-Ing. So*rios Karellas Laboratory of Steam Boilers & Thermal plants School of Mechanical engineering NaDonal Technical University Athens 9. Herroon Polytechniou str., Zografou Campus, Athens Email: sotokar@mail.ntua.gr URL: www.lsbtp.mech.ntua.gr Tel.: 00302107722810 Fax: 00302107723663 LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants NaDonal Technical University of Athens School of Mechanical Engineers NTUA The school of Mechanical Engineers is one of the 9 schools of the NTUA • At 1975 there has been a separation between mechanical and electrical engineers • At 1982 the school of Naval Engineering has ben separated from the school of Mechanical Engineering • Today there are 43 Professors • 200 new students every year 2 2 LSBTP LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas Assist. Prof. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants NaDonal Technical University of Athens The school of mechanical engineering The school of mechanical engineering has the following sections • Section of industrial administration • Thermal section • Construction and automatic control • Nuclear technology • Fluid section • Materials processing section 3 3 LSBTP LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas Assist. Prof. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants Prof. Dr. –Ing. Emmanuel Kakaras Laboratory of Steam Boilers & Thermal plants Prof. Dr.-Ing. Emmanuel Kakaras Assoc. Prof. Dr.-Ing. So*rios Karellas Director of the Laboratory Dr.-Ing. Aggelos Doukelis Dr.-Ing. Panagio*s Vourlio*s Lab. Teaching staff and Senior researchers • 1 Post-Doc Student • 10 PhD Students • 2 MSc engineers • 8 Post-graduate students • 30 Diploma-students • 2 Secretaries • 20 External Experts • 4 Guest Researchers LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants Prof. Dr. –Ing. Emmanuel Kakaras Introduc*on The Laboratory has been working for the last 25 years having acquired a wealth of experience on the following subjects. ExaminaDon of heat transfer phenomena on the exchange surfaces of steam boilers. ● TesDng and checking of heaDng systems as for their efficiency and their exhaust gas quality. ● ExaminaDon of phenomena which affect and determine the process of combusDon in furnaces ● of convenDonal and non-convenDonal steam boilers. Developing of own built codes for the simulaDon of heat transfer processes and pollutants ● formaDon. The formaDon of pollutants and the technologies for their reducDon. ● The energy saving from Thermoelectric Power Plants. ● Process simulaDon and the development of advanced cycles for power generaDon. ● The development of new technologies and combusDon systems such as solid fossil fuels and ● biomass combusDon in a Fluidised Bed. The predicDon and coping with problems through the computaDonal simulaDon of flow fields, ● of transfer and combusDon phenomena. LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants Prof. Dr. –Ing. Emmanuel Kakaras Exis*ng Basic infrastructure – Facili*es (1/4) 1. Thermal Power plant supplied with light oil or natural gas. It consists of: - Steam boiler of thermal output 2.5MWth with 100m 2 heat exchange surface and external super heater with 96m 2 heat exchange surface for producing saturated and superheated steam, respecDvely. The steam boiler has a 4t/h nominal steam producDon and operaDng pressure of 10 bar. - Steam Turbine of 200kW nominal heat output associated with nominal power 260kVA generator to produce electricity. 2. CHP Plant producing electricity - heat - cooling , using natural gas which in full operaDon yields 1573 kWth and 1527 kWe . 3. Tes*ng – Control Laboratory of Hot Water Boilers supplied with solid, liquid and gaseous fuel with capacity up to 1250kW . LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants Prof. Dr. –Ing. Emmanuel Kakaras Exis*ng Basic infrastructure – Facili*es (2/4) 4. Cer*fica*on Unit for Heat Systems (CUHS) accredited by the Hellenic AccreditaDon System (E.SY.D) according to the European Standard EN ISO/IEC 17065 ( Cer*ficate Number 127-5 with renewal date 26/03/2019) and the field of cerDficaDon is Hot Water Boilers with usage of solid, oil and gaseous fuel. CUHS is a No*fied Body in European Union with CE 0617 idenDfier number and is the only one, which has tesDng laboratory of hot water boilers in Hellas. Test rig for Hot Water Boiler testing of NTUA/LSBTP. LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants Prof. Dr. –Ing. Emmanuel Kakaras Exis*ng Basic infrastructure – Facili*es (3/4) 5. Measurement Environmental Unit (MEU) is mobile accredited by the Hellenic AccreditaDon System (E.SY.D) according to the European Standard EN ISO/IEC 17025 & CEN TS 15675 ( Cer*ficate Number 648-2 with renewal date 28/01/2018) in the field of Stack emissions from staDonary sources. Types of tests/ proper,es to be measured are: a) IsokineDc sampling and determinaDon of mass concentraDon of parDculate maher. b) Sampling and determinaDon of emissions of PM10 and PM2.5 parDcles. c) DeterminaDon of water vapor in ducts. d) Sampling and DeterminaDon of the concentraDon for O-2, CO2,CO, SO2, NOx & N2O. e) Sampling and DeterminaDon of the mass concentraDon Total Organic Carbon (TOC) with flame ionizaDon detector (FID). f) Sampling for the determinaDon of PCDDs/PCDFs and like dioxin PCBs. g) Sampling for the determinaDon of As, Cd, Cr, Co, Cu, Mn, Ni, Pb, Sb, Ti and V. h) Sampling for the determinaDon of total Hg . Isokinetic sampling for the measurement of Isokinetic sampling for the measurement PCDD’s, PCDF’s & PCB’s concentration. of Hg & Heavy metal concentration. LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants Prof. Dr. –Ing. Emmanuel Kakaras Exis*ng Basic infrastructure – Facili*es (4/4) 6. Two fluidized beds of solid fuel combusDon, of which the first is an air bed with recirculaDon (Atmospheric CirculaDng Fluidised Bed Combustor, ACFBC) of 150kW power, while the second is a laboratory scale bench Air Bubble (Atmospheric Bubbling Fluidised Bed Combustor, ABFBC). 7. A fuel cell, capable of generaDng electricity up to 2 kW for household equipment applicaDons, supplied with pure hydrogen. Fluidized Beds Fuel Cell LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants NaDonal Technical University of Athens Decentralized Energy ApplicaDons LSBTP LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas Assist. Prof. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants Prof. Dr. –Ing. Emmanuel Kakaras ORC overview 2 Expander Generator G T • Q ORC,in P el 2 HS in HS out 3 Heat exchanger 3 • 1 Condenser Q ORC,out 4 Cw in Cw out S 1 Cooling Pump 4 water LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants NaDonal Technical University of Athens The Organic Rankine Cycle – an applica*on for small power range The ORC uses organic syntrhetic or natural substances instead of water as working fluid water organic fluids ORC vs water-steam Rankine cycle • Operation at lower temperatures with better efficiency • Smaller equipment • Simple construction and operation • Reduced capital cost LSBTP LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas Assist. Prof. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants Prof. Dr. –Ing. Emmanuel Kakaras ORC applica*ons - Waste heat recovery Waste heat recovery-to-power generation Concept: Electricity Waste heat Primary G 0 WHR-ORC process Utilization of waste heat otherwise rejected to the Purpose: environment for electricity generation Reduce primary energy consumption Decrease in GHG (CO 2 , CO) and Benefits: pollutants (NO x , SO x ) emissions Potential for economic benefits in cement, glass and steel industry LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants Prof. Dr. –Ing. Emmanuel Kakaras Marine ORC project Development of a low-temperature ORC engine experimental prototype for waste heat recovery onboard ships NTUA – DNV-GL collaborative project LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants NaDonal Technical University of Athens Marine ORC opera*on principle Heat source ü Waste heat recovery unit for Pump Marine Auxiliary Diesel Engines M ü Design and opDmizaDon Motor Heat exchanger ü Test bench erecDon ORC pump ü Automated Control system G M Expander Generator Motor ü Experimental invesDgaDon Condenser ü On-board operaDon and long- term evaluaDon Cooling water LSBTP LSBTP Assoc. Prof. Dr.-Ing. Sotirios Karellas Assist. Prof. Sotirios Karellas

Laboratory of Steam Boilers and Thermal Plants NaDonal Technical University of Athens Schema*c diagram of Marine ORC circuit ! LSBTP LSBTP Associate Professor Sotirios Karellas Assist. Prof. Sotirios Karellas 16