Microturbines and their use in Small Scale Cogeneration
Microturbines and their use in Small Scale Cogeneration
Microturbines and their use in Small Scale Cogeneration
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AB09/1<br />
<strong>Microturb<strong>in</strong>es</strong> <strong>and</strong> <strong>their</strong><br />
<strong>use</strong> <strong>in</strong> <strong>Small</strong> <strong>Scale</strong><br />
<strong>Cogeneration</strong><br />
Presentation<br />
By<br />
Kourosh Mehray<strong>in</strong>- VP Product Management, Bowman Power Systems Inc.<br />
Thursday January 17 th 2002
AB09/2<br />
Bowman Power Systems Ltd.<br />
• Formed <strong>in</strong> 1994<br />
• Dedicated to Distributed Generation (DG)<br />
• MTG systems – 30 kW to 400 kW<br />
• MTG components – 1 kW to 1500 kW<br />
• Power Conditioners for all DG systems<br />
• 100 people<br />
• MTG’s<br />
• Fuel Cells<br />
• Renewables (w<strong>in</strong>d generators, solar)<br />
• Offices • Headquartered <strong>in</strong> Southampton, UK<br />
• San Diego & Los Angeles, California<br />
• Tokyo, Japan
AB09/3<br />
Based on:<br />
BPS Focus – <strong>Small</strong> <strong>Scale</strong><br />
<strong>Cogeneration</strong> > 400kW<br />
• Efficient, low emission gas turb<strong>in</strong>es<br />
• High speed generator technologies<br />
• Power electronics <strong>and</strong> condition<strong>in</strong>g<br />
• Integral heat recovery system<br />
• Optimum <strong>use</strong> of waste heat<br />
• Remote monitor<strong>in</strong>g <strong>and</strong> diagnostics
AB09/4<br />
MTG Cogen Systems<br />
1. Range of Systems: 50, 100, 250 kWe (typical)<br />
2. Electrical Power Rat<strong>in</strong>g: cont<strong>in</strong>uous<br />
3. Electrical Efficiency: 30% + (recuperated cycle)<br />
4. Time between Gas Turb<strong>in</strong>e overhauls: 30,000 hours<br />
5. Life Time of Gas Turb<strong>in</strong>e: 90,000 hours<br />
6. Ma<strong>in</strong>tenance cost (100 kW unit) < 1.5 c/ kW-hour<br />
7. Start reliability: Better than 99%
AB09/5<br />
What are the Advantages of the<br />
Turbogen CHP System<br />
• Competitive Capital Investment with other Technology.<br />
• High Grade Power Quality<br />
• High System Efficiency typically 70-80%<br />
• Environmentally Friendly low emissions levels of NO x ,<br />
CO, CO 2 .<br />
• Flexibility of Operation with variable heat/chill<strong>in</strong>g output on<br />
dem<strong>and</strong>, result<strong>in</strong>g <strong>in</strong> optimized efficiency.<br />
• Low Ma<strong>in</strong>tenance<br />
• Simple Installation Lightweight / compact. Fully factory<br />
packaged, plug & play.
AB09/6<br />
Heat Recovery<br />
Module<br />
TG80 System Arrangement<br />
Gas Turb<strong>in</strong>e<br />
Module<br />
Control & Power<br />
Conditioner<br />
Module
AB09/7<br />
Thermal<br />
Loss<br />
Transmission<br />
Loss<br />
BOWMAN<br />
Distributed <strong>Cogeneration</strong><br />
Distribution<br />
Loss<br />
Low Voltage<br />
Distribution<br />
Network<br />
Heat recovery<br />
Electricity<br />
Quality Power<br />
CENTRALISED<br />
POWER<br />
DISTRIBUTED<br />
POWER
AB09/8<br />
Electrical Efficiency Alone Not<br />
Adequate for Most Applications<br />
MTG 27-30%<br />
Heat<strong>in</strong>g<br />
or 45-55%<br />
Cool<strong>in</strong>g<br />
Economic<br />
payback
AB09/9<br />
Hot water<br />
Direct Heat<strong>in</strong>g<br />
CHP Applications<br />
Steam<br />
Chill<strong>in</strong>g for<br />
water <strong>and</strong> AC
AB09/10<br />
• Simple cycle<br />
• Electrical efficiency 15%<br />
• Exhaust temperature<br />
680°C / 1250°F<br />
Configuration Options<br />
Simple Cycle vs. Recuperated<br />
Recuperators have great effectiveness on small, high<br />
specific output gas turb<strong>in</strong>es<br />
• Recuperated cycle<br />
• Electrical efficiency 30%<br />
• Exhaust temperature<br />
280°C / 540°F
AB09/11<br />
Installation - Brickworks
AB09/12<br />
• Simple cycle gas turb<strong>in</strong>e<br />
• 24 hour operation<br />
Project Description<br />
• System <strong>in</strong>stalled <strong>in</strong> a brickworks with exhaust gases<br />
directly ducted to the brick dry<strong>in</strong>g kiln<br />
• All waste heat can be <strong>use</strong>d <strong>in</strong>to dry<strong>in</strong>g kiln<br />
• Gas <strong>in</strong>troduced at match po<strong>in</strong>t to kiln temperature<br />
• Generated electricity <strong>use</strong>d to reduce site power<br />
importation<br />
• System efficiency >90 %<br />
• Kiln exhaust gases recycled as warm <strong>in</strong>put air
AB09/13<br />
Project Economics<br />
• Capital Investment $45,000<br />
• Fuel <strong>and</strong> Ma<strong>in</strong>tenance cost $60,000 per year<br />
• Avoided electricity $43,500 per year<br />
• Avoided gas $39,000 per year<br />
• Net sav<strong>in</strong>g $22,500<br />
• Simple payback 2 years
AB09/14<br />
Similar applications suitable for<br />
Simple Cycle <strong>Microturb<strong>in</strong>es</strong><br />
• Food Process<strong>in</strong>g <strong>in</strong>dustry<br />
• Ceramic Industry<br />
• Space heat<strong>in</strong>g (with heat exchanger)<br />
• Animal Feed process<strong>in</strong>g<br />
• Waste product dry<strong>in</strong>g<br />
• Metal fabrication process
AB09/15<br />
Installation – Leisure Centre
AB09/16<br />
Project Description<br />
• London Borough Community Leisure Complex<br />
• Swimm<strong>in</strong>g Pool<br />
• Activity Halls<br />
• Turbogen TG80CG provid<strong>in</strong>g<br />
• 150 kW th of Low temperature hot water<br />
• 80 kWe of embedded generation<br />
• 4500 / 5000 operat<strong>in</strong>g hours per year
AB09/17<br />
• Turbogen TG80CG<br />
Project Economics<br />
• Sav<strong>in</strong>gs on Boiler replacement<br />
• Effective cost<br />
• Value of energy produced / yr<br />
• Operat<strong>in</strong>g costs / yr<br />
• Net benefit / yr<br />
• Climate change benefit / yr<br />
• Total Annual sav<strong>in</strong>gs<br />
• Simple Payback<br />
£60,000<br />
£5,000<br />
£55,000<br />
£33,000<br />
£23,000<br />
£10,000<br />
£5,000<br />
£15,000<br />
4 Years
AB09/18<br />
Installation –<br />
Residential Hous<strong>in</strong>g<br />
Complex
AB09/19<br />
Project Description<br />
• Inner London Borough<br />
• 1960’s 12 storey build<strong>in</strong>g<br />
• Heat<strong>in</strong>g <strong>and</strong> Electrical Load for 72 homes<br />
• Turbogen TG50CG provid<strong>in</strong>g<br />
• 50 kWe of embedded generation<br />
• 108 – 275 kW th of low temperature hot water<br />
• 6,000 operat<strong>in</strong>g hours / yr
AB09/20<br />
• Turbogen TG50CG<br />
Project Economics<br />
• Value of energy produced / yr<br />
• Operat<strong>in</strong>g costs / yr<br />
• Total annual sav<strong>in</strong>gs<br />
• Simple Payback<br />
£50,000<br />
£24,000<br />
£14,000<br />
£10,000<br />
5 years
AB09/21<br />
Similar applications suitable for<br />
Microturb<strong>in</strong>e <strong>Cogeneration</strong><br />
• Hotel Cha<strong>in</strong><br />
• Office Block<br />
• Residential Homes<br />
• Cl<strong>in</strong>ic<br />
• <strong>Small</strong> Hospitals<br />
• Sports/Fitness Centres
AB09/22<br />
Trigeneration<br />
• Turbogen can produce high temperature hot water 110/120 o C<br />
• Easily <strong>in</strong>tegrated with an Absorption Chiller<br />
• Hot water bypass provided to supply:<br />
• Heat <strong>in</strong> w<strong>in</strong>ter<br />
• Chill<strong>in</strong>g/Air condition<strong>in</strong>g <strong>in</strong> summer<br />
• TG80 can provide:<br />
• 80kWe of embedded generation<br />
• 150kWth of low temperature hot water<br />
• 30RF Tons of chill<strong>in</strong>g<br />
• Direct exhaust gas fired chillers currently under development
AB09/23<br />
Installation – Hospital<br />
Heat<strong>in</strong>g & Chill<strong>in</strong>g
AB09/24<br />
• Evaluation Scheme<br />
Project Description<br />
• Major European City Trigeneration Project<br />
• Turbogen TG80CG provid<strong>in</strong>g;<br />
• 80 kWe of embedded generation<br />
• 150 kW th of low temperature hot water<br />
• Integrated with 30 ton, double effect, hot water<br />
fired absorption chiller<br />
• Approx 8,000 operat<strong>in</strong>g hours / yr
AB09/25<br />
Benefits<br />
• TG80 is easily retrofitted to exist<strong>in</strong>g chiller<br />
<strong>in</strong>stallations<br />
• TG80 can produce high temperature hot water @<br />
110 / 120 o C<br />
• Utilization 365 days / year<br />
• Hot water bypass provided to supply:<br />
• Heat <strong>in</strong> w<strong>in</strong>ter<br />
• Chill<strong>in</strong>g / air condition<strong>in</strong>g <strong>in</strong> summer<br />
• Higher efficiency will be obta<strong>in</strong>ed us<strong>in</strong>g direct<br />
exhaust gas fired chillers (currently under<br />
development)
AB09/26<br />
• Hospitals<br />
• Supermarkets<br />
Similar applications<br />
• Frozen Food retailers<br />
• Hotels<br />
• Schools<br />
• Residential Homes <strong>in</strong> warm areas requir<strong>in</strong>g<br />
air condition<strong>in</strong>g
AB09/27<br />
Contacts at Bowman Power Systems<br />
Tony Hynes<br />
20501 Ventura Blvd. Suite 285<br />
Woodl<strong>and</strong> Hills, CA 91364<br />
818-999-6709
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