CHP & Renewable Energy The Perfect Marriage CHP is not in an - - PowerPoint PPT Presentation

CHP & Renewable Energy The Perfect Marriage

CHP is not in an Evolution, but Rather a “Revolution”

• Late 19th century
• Reciprocating steam engines powered the first electric

generators in the 1880's

• Because they were inefficient, a lot of waste steam was

generated

• This steam was sent from the power plant, via piping networks,

to buildings for heating purposes

• One of the first district heating applications was in 1884 for the

Del Coronado Hotel in San Diego, CA

• The New York Steam Company began providing service in

Lower Manhattan on March 3, 1882

A Brief History of Energy Generation (USA) (cont’d)

In September of 1882 Edison used a steam engine to drive his dynamo to generate direct current electric power for a central power generating station on Pearl Street in New York City http://www.electric- history.com/~zero../005- Electricity.htm

A Brief History of Energy Generation (USA) (cont’d)

• The 20th century
• In an effort to satisfy expanding energy needs, larger and larger steam

turbine generating stations were built

• Generating efficiencies improved from 3.7% in 1902 to 16.5% in 1932
• Federal regulation of the utility industry began in the 1930's,

generation and supply of electrical energy were separate from generation and supply of heat energy. This model would predominate well into the 1980's

• Following WWII power demand started increasing 10% annually until

the 70s where increase in power demand dropped to 5% and it is almost flat today

• This led to even larger power plants – mainly coal – being built away

from the cities

The Current State of CHP

• The 21st century
• Fast forward 100+ years from the first CHP plant, and we see CHP

taking on a whole new role in the energy sector

Energy Efficiency Lower ecological footprint Flexibility (fuel source, demand response) Resilience Affordability Security

The Current State of CHP (cont’d)

Renewable Energy’s Boom

Driving Factors

• Incentive programs
• Subsidies and grants
• Fee-in tariffs (long-term contracts)
• Tax deductions (up to 30% of installation costs in the US)
• Decreasing manufacturing and installation costs (1)
• 2012 to 2014: 60% drop in cost of Solar PV
• Residential PV cost in 2014: $4.25 per Watt
• Residential PV cost in 2017: $2.88 per Watt (projected)
• Utility-scale solar in 2009: $7 per Watt
• Utility-scale solar in 2014: $2.5 per Watt
• Low financing costs (low interest rates)

(1) http://www.businessinsider.com/renewable-energy-is-about-to-boom-2014-3

Renewable Energy’s Boom

The Result - Solar PV Growth

http://www.wired.com/2015/03/solar-growing-faster-non-renewable-energy-us/

Renewable Energy’s Boom

The Result - Wind Energy Growth

http://www.wired.com/2015/03/solar-growing-faster-non-renewable-energy-us/

CHP and Renewable Energy Sources Biomass CHP

Carbon- Neutral? Absolutely!

http://www.biomassinnovation.ca/CombinedHeatAndPower.html

CHP and Renewable Energy Sources CHP and Geothermal Energy

PG&E completes Unit 1, the first commercial geothermal electric unit in the Western Hemisphere, generating 11 megawatts

• f electricity

(1960) http://www.geysers. com/history.aspx

CHP and Renewable Energy Sources CHP and Geothermal Energy (Cont’d)

Traditional Geothermal http://www.unionegeotermica.it/What_is_geothermal_en.html

CHP and Renewable Energy Sources CHP and Geothermal Energy (Cont’d)

CHP & Geothermal

The cooling towers are replaced with one or more circuits that supply hot water to nearby houses and buildings. http://decarboni. se/publications/geothermal- electricity-and-combined-heat- power/combined-heat-power

CHP and Renewable Energy Sources CHP and Concentrating Solar

(environmentalresearchweb.org/cws/article/news/51713)

CHP and Renewable Energy Sources Solar Cogeneration

CHP and Renewable Energy Sources CHP and Wind/Solar PV

CHP makes up for intermittency and unpredictability

http://www.altenergystocks.com

CHP and Renewable Energy Sources Thermal versus Electric Energy Storage

CHP and Renewable Energy Sources Thermal versus Electric Energy Storage

Load leveling

• Thermal energy storage can improve part load

efficiency by up to 10% (varies based on project conditions) thereby reducing operational costs Peak shaving

• Thermal energy storage can also serve in reducing the

peak capacity of a CHP plant by up to 10% (varies based on project conditions) thereby reducing capital costs

Examples of High-Performance CHP (cont’d) Innovation Park - Muscat – Oman

Examples of High-Performance CHP (cont’d) Innovation Park - Muscat – Oman

Examples of High-Performance CHP (cont’d) Innovation Park - Muscat – Oman

Performance highlights

• The ultimate Tri-generation Design combined with renewable energy with
• ne of world highest performance
• Overall efficiency of 87% for generation + heat recovery
• Overall COP of 3.6

Awards:

• Climate Control Magazine/ CPI Industry - “DC PRO Engineering” and “The

Research Council of Oman” have jointly won the distinguished award for “Honorable Mention for Sustainable Project of the Year”

Examples of High-Performance CHP (cont’d) Innovation Park - Muscat – Oman

Examples of High-Performance CHP (cont’d) Innovation Park - Muscat – Oman

• Serving 20 Buildings dedicated to research, innovation & higher education
• 4 x 1450 KW high efficiency (41.7%) Natural Gas Generators with two-stage Exhaust heat

recovery (first stage to produce 10 Bar steam & second stage to produce hot water) and Jacket Heat Recovery

• Synchronized with the grid to provide backup and to shoulder the Gas engines’ operation
• Jacket and 2nd stage Heat Recovery serving 2 x 450 Ton single-effect absorption chillers

(COP= 0.7)

• Exhaust Heat recovery produce steam at 205 deg. C serving triple-effect absorption chillers 2
• Nos. x 550 Ton Capacity (COP = 1.75 to 1.8)
• The absorption chillers are put in series with 4 x 1,450 Ton series counterflow pair of Water

cooled centrifugal chillers fed by electricity from NG engine generators

• Thermal Energy storage of 1,800 Ton peak capacity and 10,250 Ton-Hr offers load leveling and
• perating flexibility. It also optimize capital cost of both generating plant and chiller plant
• 1 MW Photovoltaic plant synchronized with the NG generators to provide the renewable

component and work as supplementary power