ENERGY EFFICIENCY –

TREND OR NECESSITY

2

ALEXANDER VODENICHAROV

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4

Energy audit

What is energy audit?

Economic feasibility of the audit.

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Thermodynamic solar panels

Old

Situation

Solution New

Situation

Consumed hot water, l/d 8 000 heated by GTC

016

heat pump with

23 kWth nominal

energy

output, 16

panels

8 000

Electricity consumption,

MW*h/year

118 29,5

Cost of the electricity

consumption, EUR/year

5 070 2 358

Investment - total price, EUR 11 520

Saving of money, EUR/year 2 712

Payback period, year 4,2

* Gas price – 0,4 EUR/m3

* Electricity price - 0,08 EUR/KW*h

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Cardboard factory.

Replacement gas for heating of water for sanitary purposes

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Photovoltaic

Using solar panels for electricity production

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LOGISTIC CENTRE. Replacement electricity for illumination of storage halls

Old

Situation

Solution New

situation

Electricity consumption,

kW*h/year

17 351 PV system – 64 μc-Si

NT-150 AF PV panels,

150 W, DC each;

total installed power

– 10,2 kWp

17 351

Produced electricity,

kW*h/year

15 300

Electricity purchased for

illumination, kWh/year

2 051

Cost of electricity, EUR/year 1 735 205

Investment, total price, EUR 8 160

Saving of money, EUR/year 1 530

Pay back period, year 5,3

* Electricity price - 0,10 EUR/kW*h/year

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Cogeneration installation

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1. Piston gas engine

1 2

2. Power generator

3

3. Plate heat exchanger

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6. Water cooled exhaust collector

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5. Pipe-in-pipe heat exchanger

74

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7. NOx catalyzer

4. Shell-pipes heat exchanger

8. Silencer

600 OC

450 OC

100 OC

86°C

80°C

70°C

80°C

90°C

Inlet

Outlet

Cogeneration installation

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Spa Club and Hotel. Replacement of heating oil and electricity with LPG

Old Situation Solution New

Situation

Consumed oil 153 Cogeneration

system CHP EM

140/207 – 140

kW nominal

electric output,

207 nominal

thermal

output. LPG

fuel.

237

Electricity to substitute

MW*h/year

1 176

Cost of oil, EUR/year 179 443 220 574

Cost of electricity,

EUR/year

117 600

Cost for maintenance,

EUR/year

25 200

Investment, total price,

EUR170 000

Saving of money, EUR/year 51 269

Pay back period, year 3,3

• Heating oil price –

• Electricity price –

• LPG price -

1,18 EUR/kg

0,10 EUR/kW*h

0,93 EUR/kg

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Minimal power consumption.

Electricity is used for the pumps

and the automation.

Minimum noise level.

Environmentally friendly. The

coolant is regular water.

Uses waste heat from hot water,

flue gas or manufacturing

processes.

Long service life (at least 20

years).

Full automation.

Fire and explosion safe

Absorption chillers

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Agrifood Market

CASE – max. efficient heating , cooling and hot water producing

SOLUTION – 5xROBUR GAHP/AR absorption heat pump + 3xROBUR ACF60

absorption chiller – 136 kW cooling output, 160 kW heating output.

SITUATION – 800 m2 roofed agrifood market.

1. 40% less gas consumption for heating and hot water production.

2. 10% less costs for cooling

3. No need from boiler room – no lost of commercial area – no lost of income from rent.

4. No need from trained operators – savings from salaries .

5. Very low maintenance costs – one system , practically no moving parts.

SAVING OF MONEY = around 23 000 EUR/year, compere with standard installation.

RESULTS:

INVESTMENT COST= 110 000 EUR

Investment cost are equal to standard

installation with gas boiler and electric

chiller.

•Electricity cons. = max. 12 kW/h

•Gas cons. = max. 21,6 Nm3/h summer

•Gas cons. = max. 13,5 Nm3/h winter

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Energy from biogas

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SLAUGHTERHOUSE. Biogas installation

•CASE – economically efficient treatment of organic waste

•SOLUTION – EUCOlino 100 biogas system – 100 kW electricity output,

120 kW heating output.

•SITUATION – 5 000 t/h slaughterhouse organic waste.

1. Saved investments in waste water treatment and

boiler installations = 50 000 EUR

2. Saved money from transport and taxes of 5 000 t/y

organic waste for incineration = 50 000 EUR/y

3. Saved money for heating and hot water with boiler on

LPG = 54 706 EUR/y

4. Income from sells of green electricity = 185 292 EUR/y.

5. Income from sells of organic fertilizer = 50 000 EUR/y.

6. O&M costs = 95 000 EUR/y

•POSSITIVE RESULT = around 284 998 EUR/year, compere

with standard installations for heating, waste water and

organic waste treatment.

•PAYBACK PERIOD = less than 3 years

Results:

•INVESTMENT COST = 750 000 EUR

CONDITIONS: -Transport and treatment cost = 10 EUR/t

- FIT green electricity price = 0,23 EUR/kWh

- LPG price = 0,93 EUR/kg

- Price for sells of organic bio fertilizer = 10 EUR/t

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Geothermal pumps

• Economical

Annual heating cost 4-6 times lower

as compared to conventional boilers.

• Without gas

Geothermal pumps do not use gas for

heating and DHW.

• Safe

The system is not connected to liquid

fuel, explosive material and no high

temperature processes.

• Environmental

Heat pumps do not emit harmful

substances.

With this installation, 75% of the energy for heating and DHW provision is a gift from nature. During the

summer the installation can be used for cooling.

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Replacement of natural gas and electricity for heating and cooling of 1 000 m2 supermarket

with geothermal energy

OLD

SITUATION

SOLUTION NEW

SITUATION

Consumed natural gas,

Nm3/y

16 516 Geothermal pump

4 x VITOCAL 300 G – 164

kW nominal thermal

output, 27 kW nominal

electricity Input

1 000 m2 ceiling pipes

heating and cooling, 1

000 m2 earth connected

coil pipes collector.

Consumed electricity,

MWh/ year

128 6,5

Cost of gas , EUR/year 8 258

Cost of electricity ,

EUR/year

12 800 650

High comfort with “natural cooling” – no air flows

Investment, total price, EUR 70 000

Saving of money, EUR/year 20 408

Pay back period, year 3,4

• Natural gas price –

• Electricity price -

0,5 EUR/Nm3

0,10 EUR/kWh

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Steam Generator

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Plant for the production of beverages. Replacing the steam boiler with a

new steam generator.

Old

Situation

Solution New

Situation

Steam production, t/h 4 CLAYTON SEG 254

– 4 t/h nominal

steam output, 2

452 kW nominal

thermal output,

complete new

boiler room,

equipped for 72

hours unattended

operation

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Natural gas consumption

Nm³/year

857 364 689 355

Cost of natural gas

consumption, EUR/year

342 946 275 742

Operation cost (Before - 4

trained operators, After - 2),

EUR/year

28 800 9 600

Investment, total price, EUR 150 000

Saving of money, EUR/year 86 404

Pay back period, year 1,7

• Natural gas price 0,4 EUR/Nm³

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Thank you for the attention!