EQUIPMENT

 

Cogeneration unit, which includes:

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• gas engine-generator DvG1A-500 with auxiliary equipment

• generator control panel type ShchUEA

• oil tank with a centrifugal oil filter

• water tank

• starting air bottle, capacity 330 L

• automated compressor with electric drive

• silencer–spark arrester

• gas supply system

• cooling system

• heat-recovery water heater (waste-heat heat exchanger)

• set of spare parts, tools, and accessories (SPTA)

 

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Initial data:

 

• Total electrical output of the cogeneration unit (taking into account the power utilization factor – 0.9) – 500 kW × 0.9 = 450 kWh.

• Electricity generation: 8,000 h × 450 kW/h = 3,600.00 thousand kWh/year,

• where 8,000 h is the average annual operating hours of the CHP unit.

• Thermal output of the CHP unit – 720 kW × 0.9 = 648 kW × 0.86/1000 = 0.557 Gcal/h.

• Heat generation: 0.557 × 8,000 = 4,464 Gcal/year.

• Fuel – natural gas with a calorific value of 8,000 kcal/m³.

• Gas price – UAH 7.37 per Nm³ including VAT.

• Annual fuel consumption for the CHP unit – 150 Nm³/h × 0.9 × 8,000 = 1,080.00 thousand Nm³/year.

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Річні витрати:

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• Витрата коштів за рік на отримання газу:

Витрати газу в рік: 1080,00 тис. нм³/рік * 7,37 тис. грн/тис. н.м³ = 7959,60 тис. грн. з ПДВ,

• Витрати на запчастини та технічне обслуговування КГУ становлять:

Середньостатистичні – 200,00 тис. грн. з ПДВ.

• Витрати на масло марки «Аріан-Ультра Газ»:

8000 год × 60 грн х ( 450 кВт х 1,0 г/кВт/ 1000 + 500 л / 4000 год) = 276,00 тис. грн. з ПДВ, де
– 1,0 г/кВт – середньо-фактична питома витрата масла на угар,
– 60 грн./кг – вартість масла марки «Аріан-Ультра Газ»,
– 500 л – кількість масла в КГУ,
– 4000 год – термін служби масла до заміни

• Річний фонд оплати праці обслуговуючого персоналу

(4 чол. х 10 тис. грн. х12 місяців)– 480,00 тис. грн.

• Відрахування від заробітної плати (22%) – 105,00 тис. грн.

• Амортизаційні відрахування на рік – 750,00 тис. грн.

• Всього річні витрати становлять:

7959,60 тис. грн.. + 200 тис. грн. + 276,00 тис. грн. + 480 тис. грн. + 105 тис. грн. + 750 тис. грн. = 9770,60 тис. грн.

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ANNUAL EXPENSES:

 

It is planned that the generated electricity will be used mainly for the company’s own needs, i.e., the enterprise will save on purchasing electricity from “Oblenergo,” the price of which as of July 25, 2019 is UAH 2.83 per kWh including VAT.

In this case, the enterprise will save:

3,600.00 thousand kWh × UAH 2.83/kWh = UAH 10,188.00 thousand including VAT.

The thermal energy will also be used for the company’s own needs. In this case, the enterprise will save the funds that would otherwise be spent to obtain the same amount of thermal energy using other equipment (gas boilers, electric devices, etc.).
As of July 25, 2019, the cost of 1 Gcal of thermal energy at the enterprise is UAH 1,182.00 including VAT, determined as:
145 m³ × 7.37 + 40 kW × 2.83 = UAH 1,182.00, where:
– 145 m³ is the average amount of natural gas required to obtain 1 Gcal of thermal energy in a gas boiler,
– 7.37 UAH is the price of 1 m³ of natural gas,
– 40 kW is additional electrical energy (pump drive, other electrical equipment) required to obtain 1 Gcal of thermal energy,

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PAYBACK PERIOD FOR CHP IMPLEMENTATION:

 

The approximate cost of implementing a CHP unit based on the DvG1A-500 gas engine-generator, including design, construction and installation, commissioning, and putting the equipment into operation (“turnkey”), as of July 25, 2019, is about UAH 10 million including VAT.

The payback period for CHP implementation is:
10,000.00 thousand UAH / 5,693.85 thousand UAH = 1.76 years

Cost of thermal energy produced by the CHP:
648 kW / (648 kW + 450 kW) × 9,770.60 thousand UAH / 4,464 Gcal/year = 0.59 × 2,188.75 = 1,291.36 UAH/Gcal

Cost of electric energy produced by the CHP:
(9,770.60 thousand UAH – (4,464 Gcal/year × 1,291.36 UAH/Gcal)) / 3,600.00 thousand kWh/year = 1.11 UAH/kWh

The provided calculation is for informational purposes.

If this information interests you, please fill out the form or contact us, and we will prepare a calculation tailored to your initial data (gas and electricity prices, CHP operating regime, etc.).