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COMBINED COOLING, HEATING AND POWER
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WRTSIL CHP/CCHP CONCEPT + Extremely efficient utilisation of primary fuels + Distributed energy production enables individual CHP/CCHP solutions + Optimised plant size with step-by-step investment thanks to multi-unit design + Maximised plant availability in all operating situations due to engine wise heat
recovery systems + Flexible operation for changes in power, heat and chilling demands + Electrical output and efficiency are unaffected by the rate of heat production + Lower power transmission costs and shorter piping routes
+ On-site maintenance without production downtime + Flexibility allows Transmission and Distribution System Operators (TSO, DSO)
to host more wind and solar power.
= Low capital and operational costs per output unitHIGH PROFITABILITY!
240340
450600600
750800
400260
Coalfired
steam boiler
Gasturbine
fueloilsinglecycle
Gasturbine
naturalgassinglecycle
Dieselengine
fueloilsinglecycle
Gasengine
naturalgassinglecycle
Gasengine
naturalgasCHP(steam)
Gasengine
naturalgasCHP(hotwater)
Coalfired
chillingplant
Dieselengine
fueloilDCAP
CO emissions in g/kWh2
Typical specific CO emissions by different power plant types2
Electricity production only
Electricity and heat production
Electricity and chilling production
COMBINED BENEFITS OFDISTRIBUTED COGENERATIONWrtsils ongoing development of distributed power plant solutions is based on demandsfor alternative energy sources, the need to shorten transmission distances, and increasingstipulations for fuel efficiency. With deregulation and liberalisation of the energy markets onthe increase everywhere, the trend is towards decentralised systems. Power, heat and chillinggenerated closer to consumers shortens transmission routes considerably.
Wrtsils Combined Heat & Power (CHP) and Combined Cooling, Heating & Power(CCHP) systems are supplied to utilities, independent power producers (IPP), industries andmunicipalities around the globe.The combination of high efficiency and low emission in powerplants built by Wrtsil is unequalled on the market. Wrtsil plants comply with nationaland local environmental requirements and with World Bank guidelines for power plants. Theinternal combustion technology with its very fast starting and stopping capabilities is also aexible and good complement to power production with renewables, wind and solar energy.
Wrtsil CHP plants run on various grades of natural gas and liquid fuels, while stillmaintaining low emissions and high efficiency. The plants include thermal heat recovery for
hot water, steam, direct-re, or chilled water thereby increasing the already high efficiencyof up to 49% in terms of net electricity, to a total plant efficiency of 90% or more.
Typical plant sizes are 4600 MWe and up to 175 MWch/50,000 TR chilling in single ormulti-engine congurations.
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+15,500
22,500
CombinedSCR/OXI-CAT
CHP-module Engine-generator set
Radiator
(option)
Exhaust gas silencer
Exhaust gas boiler
PLANT CONCEPTWrtsil CHP/CCHP plants powered bycombustion engines offer exibility anduncompromising performance wherever power,heat and/or chilling are required.
Typical heat recovery systems, between the
prime mover and the customers equipment, areof hang-on type and ensure both optimisedheat production and effective engine coolingand operation. Wrtsils heat recovery designtakes into account all the customers seasonal,monthly, weekly and daily variations in runningand operational heat/cooling productionconditions. Heat production does not affect theelectrical output or the electrical effi ciency of theprime mover.
The modular design of Wrtsil CHP/CCHP plantsenables rapid delivery anywhere in the world.Prefabricated, functionally pre-tested modulesguarantee consistent quality and performanceand make on-site installation a matter ofassembling and connecting the modules.
Wrtsil has the resources and capabilitiesto carry out deliveries ranging from the supply of
equipment and engineering to complete turnkeyprojects including engineering, procurementand construction. A globally experienced projectorganisation guarantees successfully executeddeliveries around the world.
One of the benets of Wrtsils modularplant concept is the unique exibility of operationenabled by the cascading multi-engine structureof the plants. Multi-unit installations provide highplant effi ciency at any load: extra generatingsets can be turned off, while the plant continuesto run at peak effi ciency with as many units asrequired.
As demands change, the design of the plantsmakes it possible to increase the plant size instages by adding new engines. This also allowsfor a smaller initial investment with the option toexpand later as required.
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TOWN CONCEPT EXAMPLEWhen the plant is situated in the middle of a city or an
industrial plant site, the layout is more compact and theprotective shielding is stronger. The two oor plant lay-outallows a small and compact footprint. The exterior of theplant and possible architectural design of the power househas also to be suited to its surroundings. The emissionlevels have to be kept very low with effective emissionreduction systems and heavy-duty silencers have to beinstalled to eliminate any noice problems.
FIELD CONCEPT EXAMPLEWhere the building site is ample and not situated in themidst of a densely populated area, the single oor plantlayout with an overall lower plant prole is used. The mainheat recovery system is situated outside the main enginehall, either under a separate roof or as weatherproofequipment.
+10,950
21,250
HP-module Engine-generator set
Wrtsil 20V34SG
Engine auxiliary module (EAM)
CHP module
Pre-engineered and pretested modules minimiseconstruction time and maximise reliabi lity.
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90%
85%
80%
75%
80C 90C 100C 110C 120C 130C75C
70C
65C
60C
55C
50C
45C
Recoveredheat
Totalefficiency
eturn temperature
upp y temperature
10,100 kW
9000 kW
7900 kW
6800 kW
76%78%
78%80%
80%82%
82%84%
84%86%
86%88%
88%90%
90%92%
PLANT TOTAL EFFICIENCY DEPENDING ON HOT WATER TEMPERATURES
Power (net) 44%Electricity 46%
Fuel consumption 100%
From the engines
Heat recoveryfrom the engine
Losses 35.5%
Steam generation 18.5% Total efficiency62.5%
an aux ar es
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