1 2 Renewable Sun Power Team members Niels Brandenburg Wim Faes - PowerPoint PPT Presentation

1

2

Renewable Sun Power Team members Niels Brandenburg Wim Faes Johannes Ihle Hafizul Ilias Víctor Porras Ionuț Marius Dobroaia 3

Team members Niels Ionuț Marius Wim Johannes Ihle Hafizul Víctor Brandenburg Dobroaia Faes Ilias Porras Mechanical Mechanical Construction Mechanical Mechanical Electrical Engineering Engineering Engineering Engineering Engineering Engineering The Hague Politehnica University of University of EPSEVG EPSEVG University of University of Antwerp Applied Applied Bucharest Sciences Sciences Kempten 4

Index • Planning • Goals • Renewable energy sources • Mirror system • The ORC system • Protoype • Working fluids • Heat exchanger • Generator • Pump • Conclusion 5

Planning • Planning • Goals • Renewable energy sources • Mirror system • The ORC system • Protoype • Working fluids • Heat exchanger • Generator • Pump • Conclusion 6 6

Goals • Main goal: • Design and calculate a solar ORC system • Sub goals: • Calculate the minimum requirements of the condenser, evaporator, generator and pump • Find a matching standardized condenser and evaporator • Find a matching standardized generator and pump 7

Renewable energy sources Types of renewable energy Solar (1%) Wind (4%) Geothermal (5%) Biomass (48%) Hydro (42%) 8

The need for renewable energy 0.5% 4% 3% 7% Oil 39% Coal Gas Nuclear 23% Hydroelectric Biomass Others 24% 9

The mirror system 10

Mirror materials 11

Organic Rankine Cycle (ORC) 12

Pressure-Enthalpy Diagram 13

Prototype • Pump  Q Pump 1 . 8 kW • Turbine  Q Turbine 8 . 9 kW • Plant  7 . 2 Q Plant kW 14

Prototype • Solar constant W E  1367 m 0 2 • Required area of mirrors    50 % w t   q  Pump  8 %   ORC  60 % 23 Turbine    8 % ORC       90 % 7 % Q Pipes total    Plant 2 A 75 m      95 % E Mirror 0 total 15

Working fluids R245 fa Treat water Industrial water 16

R245 fa P1( bar) P2(bar) Tc(ºC) Vapor Quality (%) Efficiency (%) R134a 32.47 10.170 101.0 96.15 4.57 R245fa 28.15 2.496 154.0 100 9.19 R227ea 25.56 7.003 102.8 100 4.50 R423a 29.47 9.306 99.52 100 2.64 17

Industrial water • Corrosion • Excellent Thermal • Excellent Chemical Stability • High Specific Heat • Non Toxicity • Low Cost 18

Treated water • Non Toxicity • Excellent Thermal • Excellent Chemical Stability • High Specific Heat Capacity • Save Water • Low Cost 19

Heat Exchangers A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. 20

Heat Exchangers Applications • space heating • refrigeration • air conditioning • power plants • petrouleum refineries • natural gas procesing • sewage treatment 21

Shell and tube heat exchangers Heat Exchangers Types Double pipe heat exchangers Plate heat exchangers Plate and shell heat exchangers 22

Heat Exchangers ORC Evaporator Material: Stainless steel (AISI 316L) Pipes length: 1.4 m Shell diameter: 0.44 m No. of pipes: 196 Water flow: 1.2 kg/s R245fa flow: 0.4 kg/s 23

Heat Exchangers ORC Condenser Material: Stainless steel (AISI 316L) Pipes length: 1.4 m Shell diameter: 0.4 m No. of pipes: 90 Water flow: 4.1 kg/s R245fa flow: 0.4 kg/s 24

Generator • Turbine 𝑋 = 𝑛 · 𝑋 𝑢 34 𝑋 𝑈𝑣𝑠𝑐𝑗𝑜𝑓 ≈ 8.9 𝑙𝑋 25

Generator • Alternator 𝑋 𝐵𝑚𝑢𝑓𝑠𝑜𝑏𝑢𝑝𝑠 ≈ 8.9 𝑙𝑋 26

Pump 𝑋 𝑄𝑣𝑛𝑞 ≈ 1.8 𝑙𝑋 𝑛 𝑄𝑣𝑛𝑞 ≈ 0.4 𝑙𝑕/𝑡 𝑞 𝑄𝑣𝑛𝑞 ≈ 31 𝑐𝑏𝑠 27

Conclusions W Generator = 8.9 kW T = 145 °C T = 40 °C W Pump = 1.8 kW 28

Thank you for your attention! Feel free to ask any questions! 29