OPTI_ENERGY
Centre of Excellence
Optimization, Simulation and Environmental Impact of Energy Systems and Processes
European Community
Coordinator: R.A. Białecki Deputy: A. Szlęk Coordinator: A.J. Nowak Coordinator: R. Wilk Coordinator: J. Skorek Coordinator: A. Ziębik Coordinator: A. Szlęk Coordinator:
J. Kozioł S. PostrzednikCoordinator:
Polish Steering Committee
International Steering Committee International Advisory Board Mathematical modelling and optimization of energy conversion and heat transfer processes Low emission high temperature air combustion Cogeneration and eco-buildings Energy management, system and energy analysis in heat engineering and optimization of energy systems Scientific and technical coordination, dissemination Communal energy policy, cooperation with local government International PhD Studies
OPTI_ENERGY
Centre of Excellence
Optimization, Simulation and Environmental Impact of Energy Systems and Processes
Work package 1
Thematic programme: Cogeneration and ecobuildings
Sample Research Fields:
• Thermodynamic analysis and optimisation of gas supplied co-generation and trigeneration CHP systems
• Modelling of thermal processes
• Balances of thermal technological processes
• Energy and exergy analysis of thermal processes and heating systems
• Economics of gas energy heat and power systems • Distribution of gas fuels
• Thermodynamic and economic analysis of heat pumps • Thermodynamic analysis of humid air gas turbines
• Economic analysis of utilisation of gas fuels in heating systems • Numerical methods in heat and mass transfer
• Inverse problems in heat and mass transfer
ANALYSIS OF ENERGY TECHNOLOGIES:
• Small scale co-generation units CHP – distributed heat and power
generation,
• Energy utilisation of special gases (biogases, coal-methane),
• Bi-fuel (coal and natural gas) power plants and co-generation plants,
• Repowering of existing coal fired power plants
• Tri-generation plants
• Load analyses of buildings and industrial energy final consumers
• Simulations of the CHP modules operation
ENERGY SAVINGS AND MENAGEMENT:
• Low energy heating and power systems for buildings,
• Technical and economical optimisation of CHP plants,
Energy analysis of the small scale co-generation units CHP - distributed heat and power generation
KO M IN Woda grzewcza 90 CO Woda powrotna 50 OC 120 OC ~500 OC Chłodnica oleju Chłodnica płaszcza wodnego
i doładowania mieszanki Odbiorniki ciepła Odzysk ciepła ze spalin GAZ POWIETRZE
Hot water and steam production
Energy utilisation of special gases (biogases, coal-methane)
CHP – sewage gas CHP – landfill gas
CHP – coal methane (trigeneration system)
CHP integrated with biomass gasification
Tri-generation CHP units
Tri-generation with absorption chillier, e.g. coal mines applications (reciprocating engine)
Bi-fuel (coal and natural gas) power plants and co-generation
S D s CHP D G d
N
N
N
Q
Q
W
P
&
+
=
+
+
&
+
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Energy balances and modelling of small-scale
cogeneration systems
Example:
Simulations of the CHP units operation
Winter week-day (28 January) 0 500 1000 1500 2000 2500 3000 3500 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 hour lo a d , k W
electricity load heat load
Example:
Load analyses of buildings and industrial energy final consumers
Electric power
Optimization of the heating water temperature in installation: use of low temperaure heating
systems with heat pumps
0 20 40 60 80 100 120 140 90/75 °C 70/55 °C 50/35 °C 38/23 °C
heating water temperature
annual energy consumption, GJ
heat pump (direct) heat pump (primary) heat pump (cumulative) boiler (direct and primary) boiler (cumulative)
Example:
BCHP technology:
Building Cool, Heat and Power
Tri-generation system for buildings applications with gas mictroturbine
Technical and economical optimisation of CHP plants: optimal sizing and mode of operation
Computer codes for CHP plant simulation and optimization
Program flow controls STAR T READ DATA Computation of the load duration
curves Correction of the energy demand data PRINT RESULTS 12 monthly load duration curves and annual load duration curve NO
Energy demand data
Detailed heat and electricity load profiles or representative average load profiles for typical days in the year READ DATA Time zones definition READ DATA To correct energy demand data ? READ DATA YES Real energy consumption read from site meters
To perform load duration curves ? YES READ DATA Configuration of the site energy system Avearage statistical data Program's
database User defined
Equipment performance data source
READ
DATA Gas turbine used in the
system configuration READ DATA Montly average ambient temperature
Gas turbine power and efficiency correction factors due to ambient temperature variations NO NO YES MAIN CALCULATION MODULE
calculation of the system performance every 15 minutes in
the period defined by a user
Fuel and electricity costs READ DATA PRINT RESULTS Performance of the system in every 15 minutes for the
period of time defined by a user READ DATA Economical data, finasing options Cumulative energy figures NPV, IRR, PBP, DPBP, Configuration characteristics PRINT RESULTS STOP ECONOMICAL ANALYSIS
E B1 B2 G
.
G Gas engine S.
EExample of CHP optimal sizing
-2000000 -1000000 0 1000000 2000000 3000000 4000000 5000000 0 1 2 3 4 5 6 7
Nominalna moc cieplna silnika, MW
NP
V
, U
S
$
energia el. 40 US$/MWh energia el. 45 US$/MWh energia el. 50 US$/MWh energia el. 35 US$/MWh Electricity Tracking operation
-ET -2500000 -2000000 -1500000 -1000000 -500000 0 500000 1000000 1500000 0 2 4 6 8
Nominalna moc cieplna silnika, MW
N
PV,
U
S$
energia el. 40 US$/MWh energia el. 45 US$/MWh energia el. 50 US$/MWh energia el. 35 US$/MWh
Monitoring and optimisation of energy consumption in industry
Computer package for co-ordination of energy and mass balances in industrial plants:
• electricity balance, • steam balance,
• water/sewage balance
On-line operation with monitoring system
START
bilans.exe
okno startowe
uruchom preprocesor pobierz dane z baz danych CANCEL OK wybór medium CANCEL energia
elektryczna ciepło woda i ścieki
definicja modelu
NIE pomiarowepunkty niewiadome błędy zmiennych niewiadome TAK KONIEC DALEJ obliczenia obliczenia bilansowe PROCESOR podgląd wczytanych danych generator raportów tekstowych generator raportów EXCEL Cancel STOP korekta wczytanych danych OK STOP TG2 K2 K3 4 MPa 5009 K1 5013 5011 4037 4 0.35 4067 4074 1.0 0.35 4077 4069 1.0 M P a 4045 4043 GwSR3 GwSR1 4042 4038 9003 kotły parowe
kolektor pary swieżej
stacja redukcyjno -schładzajaca turbina parowa przeciwprężna
Application in paper
mill
Laboratory for computer aided modelling of gas energy systems and processes
Sample energy analysis of complex gas turbines systems
Humid Air Turbines Co-generation system G KO OC T SW N gaz pow. SN CH WC WR KS woda 39.5 40.0 40.5 41.0 41.5 42.0 42.5 0 1 2 3 4 5 6 7 8 9
strumień wtryskiwanej wody, kg/s
spraw ność układu, % t = 10 °C t = 15 °C t = 20 °C t = 25 °C t = 30 °C t = 35 °C Wet Compression
Gas Turbines Technology
4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0 Stosunek sprężania 325.0 375.0 425.0 475.0 525.0 575.0 300.0 350.0 400.0 450.0 500.0 550.0 600.0 P ra ca w ła śc i w al kJ /k g ai r 50.5 51.5 52.5 53.5 54.5 55.5 50.0 51.0 52.0 53.0 54.0 55.0 56.0 η % η t = 1300 C t = 1200 C η g g S pr a w no ść
Energy indices of HAT
S T K S Paliwo G Powietrze Spaliny Woda
Off-campus laboratory of internal combustion engines at Towarowa 5
