Transcript No Slide Title

The three level guidance of energy audit
activity
Official Guidelines for energy audits
Ministry of Trade and Industry
Audit models,
Guidelines for reporting and implementing
audits for different sectors
Motiva Oy
Energy Auditor’s Handbook
Motiva Oy
26.10.2004
Starting of energy audits
• The company’s special needs, targets
• The content, meaning and instructions of energy
auditing procedure supported by the ministry
• Voluntary energy conservation agreements
• Links of energy auditing to environmental, quality
and other functional systems or procedures of
the company
• Resources for auditing (own work or outsourcing)
• Bidding
• Evaluation of the tenders
• Decision of energy auditing
Filling the forms for subsidies ,
Decision of the support
Start
26.10.2004
The same targets in every
audit model
•
Comprehensive study
• Heating/electricity/fuels/renewables/water costs
and energy consumption
•
Results:
• Break down of consumption
• Better understanding about energy costs, energy
consumption etc.
• Proposals for saving measures
26.10.2004

Justification

Economy (savings, investments…

Other effects and impacts
Energy consumption break down Sankey diagram
Ni tro gen fac to ry
26 0 [kW ]
L i ght i ng
C om pre ssed ai r
80 [k W ]
19 0 [kW ]
Ai r c ool i ng
22 0 [kW ]
Vent i l at i on
Ot her
20 0 [kW ]
65 [k W ]
E l ect ri ci t y
31 65 [kW ]
53 0 [kW ]
22 0 [kW ]
50 [k W ]
Heat reco very
26 00 [kW ]
30 [k W ]
Heat reco very bo i le r
69 00 [kW ]
Di re ct proce ss rem o val s
40 00 [kW ]
R aw m at eri al
prep rocessi ng
14 00 [kW ]
52 0 [kW ]
Oxyg en burn er
55 0 [kW ]
16 30 [kW ]
L ehr
Fl oa t b at h
13 20 [kW ]
11 10 [kW ]
W at er cool i ng
Mel t i ng
Nat ural gas
36 00 [kW ]
13 00 [kW ]
13 80 [kW ]
17 730 [kW ]
12 20 [kW ]
10 620 [kW ]
26.10.2004
R oom
MOTIVA Energy Audit Report
Table 1. Summary of the energy consumption and energy saving potential
Energy consumptionSaving potential
Fuels, heat
Total investments
160 000
MWh/a
ECU/a
%
%
120 000
Electricity
MWh/a
ECU/a
MWh/a
ECU/a
%
%
ECU
Water
m³/a
ECU/a
m³/a
ECU/a
%
%
Total consumption Total savings
ECU/a
140 000
ECU
ECU/a
ECU
Total investments
%
ECU
Savings [ECU/a]
MWh/a
ECU/a
100 000
Fuels
Electricity
Water
80 000
60 000
40 000
20 000
0
0
0-1
12
23
35
Pay back time [a]
26.10.2004
510
TAULUKKO 2
YHTEENVETO ENERGIANSÄÄSTÖTOIMENPITEISTÄ
Paataulun CO2-versio 1.0
TO IMENPITEEN
KUVAUS
16.5.2003
SÄÄSTÖ
TMA
YHTEENSÄ
INVES-
CO 2
SÄÄSTÖ
SÄÄSTÖ
TO INTI
VÄHENEMÄ
LÄMPÖ
SÄHKÖ
YHTEENSÄ
no
EUR/a
a
EUR
t
energia
CO 2
MWh/a
kustannukset
t
energia
muut
EUR/a
EUR/a
energia
CO 2
MWh/a
SÄÄSTÖ
VESI
kustannukset
t
energia
muut
EUR/a
EUR/a
vesi
kustannukset
m 3 /a
EUR/a
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
YHTEENSÄ
26.10.2004
0
0
0
0
0
0
0
0
0
0
0
0
0
Energy Analyses in Industry
Report Model (MOTIVA)
7. Saving
measures
and economy
6. Process
4. Building
5. Process
services
3. Consum
ption,
costs
2. Basic info
TABLE 2
Savings
€
TABLE 1
Kauppa- ja teollisuusministeriön
tukema energiakatselmushanke
DNro: 333/954/93
Päätöksen pvm 30.12.1993
JP-TALOTEKNIIKKA
ENERGY ANALYSES REPORT
Company Ltd
recycling material fromclients
stock
electr. water
chruched aggregate
compressed
hot air
electr. air
N2
natural gas
a-powder
N
cooling
water
H2 2
electr.
electr. electr.
warter
compr. air
natural gas O2
electr.
SO2
natural gas
Prehandling
of raw
material
lime
Na2SO4
Tinbath
Smelt
ing
hot
combustion
air
gas
Cooling
Washing
and
checking
Cutting
and
bundling
compr.air
compr.air
cooling
drying air
cooling. cooling
compr. air
air
air
water
Regen.
copr. air electr.
sand
air
soda
heating water
waste heat
boiler
electr.
Delivering
+ stock
heat
Continued
handling
combustion gas
Helsinki
5.9.1999
1. Summary
- text
- tables 1,2
- econ.prof.
- Sankey
diagram
- process
block diagr.
Invest.
€
Pay back
period
Saving
Cons. Saving Invest. measur. 1
now
pot.
Saving
measur. 2
Electr.
:
:
Total
Fuels
Water
recycling material from clients
stock
Nitrogen factory
Total
260 [kW]
Lighting
Compressed air
compressed
hot air
electr. air
N2
N
cooling
H2 2
electr.
warter
SO2
electr.
natural gas O2
natural gas
Ventilation
Air cooling
electr. water
80 [kW]
190 [kW]
chruched aggregate
220 [kW]
Prehandling
of raw
material
30 [kW]
4000 [kW]
Tinbath
Smelt
ing
hot
combustion
air
gas
Cooling
2600 [kW]
Direct process removals
soda
sand
Na2SO4
air
1630 [kW]
Regen.
Lehr
Jaakko Pöyry Group
26.10.2004
Cutting
and
bundling
compr.air
compr.air
cooling
drying air
cooling. cooling
compr. air
air
air water
copr. air
1110 [kW]
0
1
2 3-4
5-
Melting
Natural gas
17730 [kW]
3600 [kW]
Delivering
+ stock
heat
electr.
Water cooling
heating water
waste heat
boiler
1300 [kW]
Continued
handling
1380 [kW]
1220 [kW]
10620 [kW]
PL 27, 00131 HELSINKI
Puh. 09 - 46911
Fax. 09 - 4691 311
Washing
and
checking
1400 [kW]
Float bath
1320 [kW]
electr.
compr. air
520 [kW]
lime
Oxygen burner
550 [kW]
electr. electr.
Heat recovery
Heat recovery boiler
6900 [kW]
Raw mat erial
preproces sing
natural gas a-powder
water
220 [kW]
50 [kW]
530 [kW]
Savings
€
Ot her
200 [kW]
65 [kW]
Electricity
3165 [kW]
combustion gas
Company Oy
A
p
p.
Room
Energy audits in industry
Energy audit
• process service systems
• facilities
Energy analysis
• processes
• process sevice systems
• facilities
Energy audits in process industry
will be carried out in two phases
26.10.2004
•Energy•-•analyses for process industry
•Audit, phase 1
•Audit
•Audit•report
•report
•Phase 1: Factory audit
•Survey phase = Factory audit carried out by a team
•of professionals
•Report of the factory audit (Preliminary Plan for Energy Saving)
•••energy breakdown, saving potential
•••saving proposals
•••needs for Complementing Analyses, rough saving potential and profitability, preliminary project plans
•Phase 2. Complementing analyses
•••saving meas. .
•••training
•••...
•CA
•report
•report
•Complementing analyses
•CA
•report
•report
•CA
•report
•report
•Budjeting
•••More detailed •studyof
•saving potential found in
•factory audit
•Report
•••measures
•••saving potential
•••investments
•••pay back period
•Strategic
•planning
•of the unit
•••Strateg•. invest.
•Scheduling
•Annual Reports to
•the Finnish
•Industrial
•organisations
26.10.2004
•PES
•Plans for energy saving •(requirements of Agreement of Energy Saving)
•••potential / targets
•••shedules•and costs
Energy efficiency in process services
Example: Load and energy efficiency analyses of compressed
air systems
95
120
90
100
80
75
70
65
Week end
60
time
Electric load [kW]
Electric load [kW]
85
80
60
40
20
0
1 11 21 31 41 51 61 71 81 91 101111121131141151161171181191201
time [s]
Electric load change (15 min average) during a week
•
•
•
•
Idling and working load
need of compressed air and possibilities to replacements
pressure level, condition of the network
production costs, efficiency of use
energy efficiency of production of compressed air,
possibilities to improve the efficiency
• heat recovery etc.
26.10.2004
Total consumptions, energy costs, saving
potentials and investments of 20 energy audits
in the industry sector with total energy
consumption of 70-500 GWh/a during the
period 1992-2002
Present consumption
20
Heat
2 453 499 MWh/a
27 314 818
€/a
Electricity
709 220 MWh/a
25 064 750
€/a
Water
8 829 155 m3/a
3 534 098
€/a
Total consumptions
55 913 667
26.10.2004
€/a
INDUSTRY, Energy consumption 70 - 500 GWh/a
Savings potential 1992-2002
323 356 MWh/a 13,2 %
4 932 586
€/a
18,1 %
26 990 MWh/a
1 334 138
€/a
3,8 %
5,3 %
1 355 338 m3/a 15,4 %
573 183
€/a
16,2 %
Total savings
6 839 907
€/a
12,2 %
Investments
11 329 766 €
Energy savings potential
found in energy audits (in
industry in Finland)
•
•
•
Fuels 10-15 %
•
•
Average pay-back time for investments 2-3 years
Electricity 4-8 % (even lower in process industry)
Water 10-15 %
About one third of the savings potential can be
realised without major investments (operational
measures)
•
Two thirds of the savings potential will be realised
during next 3-5 years period after the audit
26.10.2004