ISCC Mathania Integrated Solar Combined Cycle Power Plant in India

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1 FICHTNER SOLAR mbh ISCC Mathania Integrated Solar Combined Cycle Power Plant in India Presentation at the th SolarPACES International Symposium on Concentrated Solar Power and Chemical Energy Technologies September -6, 2, Zürich, Switzerland eorg Brakmann - Fichtner Solar, Stuttgart Helmut Ernst - Kreditanstalt für Wiederaufbau, Frankfurt opal Somani - Rajasthan Renewable Energy Corp. Ltd., Jaipur SolarPaces Zurich Sep 2, Nr.

2 FICHTNER SOLAR mbh Key Project Data Technology ISCC with Parabolic Trough Collectors Maximum gross capacity between 2 and 6 MWe Site location Mathania, India Collector area m 2 (+/- 3%) Fuel R-LN, Natural as, Diesel Thermal storage preferred but not obligatory Scope EPC plus 5 years O&M SolarPaces Zurich Sep 2, Nr. 2

3 CC Power Plant Stack Exhaust C FICHTNER SOLAR mbh Steam 5 C, bar HRS Steam turbine 35 MW ~ Cooling Tower Air and vapour Condenser Air Air Exhaust C as turbine 6 MW ~ Electricity to the grid SolarPaces Zurich Sep 2, Nr. 3

4 ISCC Power Plant Stack Exhaust C FICHTNER SOLAR mbh 395 C Steam 5 C, bar Storage Solar HX HRS Steam turbine 55 MW ~ Cooling Tower Air and vapour m² Parabolic Trough Field 295 C Exhaust C Condenser Air Air as turbine 6 MW ~ Electricity to the grid SolarPaces Zurich Sep 2, Nr.

5 FICHTNER SOLAR mbh The three most important items of an ISCC. Integration 2. Integration 3. Integration Integration of a Solar Component into a Combined Cycle Power Plant SolarPaces Zurich Sep 2, Nr. 5

6 FICHTNER SOLAR mbh History of ISCC Mathania 989/9 Mathania Feasibility Study for solar-only concept (by Fichtner for KfW / MNES). 99: The Integration of a Solar Component into a Combined Cycle Power Plant is suggested for the first time (by KfW). 995/96: First Feasibility Study for an ISCC (by Fichtner for KfW / MNES). 998: The EF earmarks mln $ to support four ISCC projects. 999: ISCC Crisis: Concern about the amount of carbon offset in an ISCC. World Bank questions whether trough based ISCC plants make any sense. ISCC Crisis is solved: Fichtner shows that an optimal integration can substantially increase the carbon savings. The World Bank / EF decides to continue with the support of the four ISCC projects. /2: RfP for Mathania (Fuel changed from naphtha to R-LN). Three Consortia are pre-qualified and bidding for the EPC cum O&M contract. SolarPaces Zurich Sep 2, Nr. 6

7 FICHTNER SOLAR mbh Efficiency in the steam water cycle T( C) T-Q diagram Shorter evaporation phase in the HRS during day mode. Flue as Entropy (the area between the flue gas and the steamwater curve) corresponds to loss of efficiency. Steam-water in day mode Steam-water in night mode Q (%) The annual efficiency of the ISCC must be optimized. All operating conditions must be considered. SolarPaces Zurich Sep 2, Nr.

8 FICHTNER SOLAR mbh Parabolic Troughs 9: Invented in Stuttgart SolarPaces Zurich Sep 2, Nr. 8

9 FICHTNER SOLAR mbh Parabolic Troughs 998-2: EuroTrough Development 98-99: 35 MW by Luz in California 9: Invented in Stuttgart 92: 55 kw by Shuman in Egypt SolarPaces Zurich Sep 2, Nr. 9

10 FICHTNER SOLAR mbh Site Location Mathania Location Latitude Longitude Elevation 3km from Jodhpur 26 3 North 3 2 East 253m ASL SolarPaces Zurich Sep 2, Nr.

11 FICHTNER SOLAR mbh Direct normal insolation at Mathania (W/m 2 ) Annual value = 85 kwh/m 2 /a January, average daily output = February, average daily output = March, average daily output = April, average daily output = May, average daily output = June, average daily output = July, average daily output = August, average daily output = September, average daily output = 6 October, average daily output = 8 November, average daily output = 8 December, average daily output = Mathania has one of the best insolation conditions of India, although July and August are monsoon months SolarPaces Zurich Sep 2, Nr.

12 FICHTNER SOLAR mbh Solar field performance without storage The generation of solar heat is largest in April, although the insolation is largest in October through January. SolarPaces Zurich Sep 2, Nr. 2

13 FICHTNER SOLAR mbh Solar field performance with MWh storage SolarPaces Zurich Sep 2, Nr. 3

14 FICHTNER SOLAR mbh as Turbine (at C / C) Sample Design 66 MWe / 55 MWe Steam Turbine (at C / C) No solar input: 35 MWe / 32 MWe With solar input: 5 MWe / 5 MWe Thermal storage Annual net generation Annual fuel consumption Solar heat production Annual fossil generation Exergetic solar generation MWh 85 Wh/a 52 Wh/a (LCV) 2 Wh/a (th) 52 Wh/a 63 Wh/a Annual solar share exergetic:. % based on solar thermal input:.8% SolarPaces Zurich Sep 2, Nr.

15 FICHTNER SOLAR mbh Definitions of Solar Share ISCC Day Mode ISCC Night Mode A Solar heat input MWth 5, T output MWe 6, 6, 6, ST output MWe 5,8 33,3 35,3 Total gross output MWe 5, 93, 95,6 B Total net output MWe,2 9,8 92, C Fuel flow (in LCV) MJ/s 85, 85, 85, D Exergetic fossil generation from CC Plant MWe 92, 92, 92, E Exergetic solar generation B - D MWe 8, -,9 F Solar eneration above night mode MWe 2,3 Solar Share based on Input A / (D+A) 2,3% Solar Share above night mode 8,3% Exergetic Solar Share F / C 6,6% -2,% CC Steam turbine output of ISCC in night mode is lower because of part load losses. Solar share must be defined. SolarPaces Zurich Sep 2, Nr. 5

16 FICHTNER SOLAR mbh Exergetic Solar eneration 2 MWe 8.2 ST = ST = 3.5 ST = 32. Exergetic Solar eneration = 8.5 MWe Exergetic Solar Losses = -.9 MWe 6 T output = 6. MWe 2 ISCC Day Mode ISCC Night Mode CC ST means the steam turbine generation minus the station parasitic consumption. The exergetic solar generation considers the capability of the fossil fuel in an optimised combined cycle power plant. SolarPaces Zurich Sep 2, Nr. 6

17 power in MW FICHTNER SOLAR mbh Operation on 5 March Mar solar dumped solar to Storage fossil from AF solar from storage solar direct fossil from T and HRS net electric SolarPaces Zurich Sep 2, Nr.

Trip Report SolarPACES September 2011

Trip Report SolarPACES September 2011 Introduction The 2011 SolarPACES conference was held in the town of Granada, in Spain, this year. The conference dealt with solar power and chemical energy systems.