WP 1: Improving CHP/DHC sectors in CEEC COMPANY LEVEL REPORT - BULGARIA CASE-STUDY 5

Transcription

1 S E C WP 1: Improving CHP/DHC sectors in CEEC COMPANY LEVEL REPORT - BULGARIA CASE-STUDY 5 GAS FIRED CHP IMPLEMENTATION IN HS MLADOST (DH COMPANY OF VRATSA) May 2004 European Commission (Directorate-General for Energy and Transport) Contract no. NNE5/2002/52: OPET CHP/DH Cluster

2 GAS FIRED CHP IMPLEMENTATION IN HS MLADOST (DH COMPANY OF VRATSA) Author(s): Ivanka Pandelieva, Ivan Jabinski Organisation: Sofia Energy Centre Address: 37, Galitchitsa Str., 1164 Sofia, Bulgaria Tel.: Fax: ivankap@sec.bg Web: The project "OPET CHP/DH Cluster" has obtained financial support from the European Commission (Directorate-General for Energy and Transport) under the contract no. NNE5/2002/52 for Community Activities in the Field of the specific programme for RTD and demonstration on "Energy, Environment and Sustainable Development - Part B: Energy programme" The responsibility for the content on this publication lies solely with the authors. The content does not necessarily represent the opinion of the European Community and the Community is not responsible for any use that might be made of data appearing herein. 2

3 Table of Contents 1. Existing boilers Fuel used Heat production and sales Proposed technology for heating station rehabilitation Project Description Main project indicators Assessment of CO 2 emissions reduction...8 3

4 1. Existing boilers Heating Station Mladost DHC Vratsa, is built to supply hot water (150/70º C) for space heating and domestic hot water preparation in part of residential areas of the town of Vratsa. There are two water heating boilers mounted in the station each of 58,15 MWt installed capacity respectively commissioned in 1987 and They are in good technical condition 2. Fuel used The main fuel used is natural gas. Heavy fuel oil is used as emergency fuel only. 3. Heat production and sales The period is characterised by the following main figures for heat production and sales in HS Mladost - Vratsa: No Indicator (GJ/year) 1. Heat produced Transmission losses and HS own needs Heat sold Proposed technology for heating station rehabilitation 4.1. Project Description The preliminary investigations show that in HS Mladost, Vratsa, the conditions allow for the same CHP project to be implemented as that in HS Vladislav Varnenchik in Varna (Case-study 4). It is proposed to build up a CHP installation to cover all year round domestic hot water needs and part of the basic space heating load. It is proposed to install two piston gas engines of same type with the following characteristics: Electrical capacity 3200 kwe Thermal capacity 3900 kwt Electrical efficiency 42,0 % Overall efficiency 93,0 % Hourly consumption of natural gas 825,25 Nm³/hour 4

5 4.2. Main project indicators The size and duration of heat load to be covered by the proposed CHP instillation will allow for 7000 operational hours per annum. The indicative technical and economic parameters of the installation and the preliminary financial results, according to accepted credit terms, are given in Tables below: 5

6 Main Indicators of the Project for CHP Installation in HS Mladost, DHC Vratsa No Indicator Unit Value 1. Installed electrical capacity MWe 2. Installed heat capacity MWt 7,8 3. Gross electricity generation MWh/annum Electricity sales MWh/annum Gross heat generation MWht/annum Heat sales to final consumers MWht/annum Necessary investments 1000 Euro Overall natural gas consumption 1000Nm³/annum Total production costs 1000Euro/annum Of which for electricity generation 1000Euro/annum For heat generation 1000Euro/annum Price of electricity Euro/MWh 40, Price of heat Euro/MWht 24, Overall revenues from sales 1000Euro/annum 15. Profit before taxation 1000Euro/annum Simple rate of return (without taking into account the credit interest and taxation). 6,4 % 31,5 6

7 Preliminary Financial Analysis of the CHP project in HS Mladost, DHC Vratsa Yea r Credit size Principal payment Interest payment Production costs Overall accepted costs From electricity Receipts from sales From heat Total Profit (+) or Loss (-) Profit taxation Final financial result All

8 4.3. Assessment of CO 2 emissions reduction The assessment of CO 2 emissions reduction resulting from the CHP project in HS Mladost in Vratsa is presented in the following table: No Indicator Unit Before project After project 1. Natural gas consumption 1000Nm³/annum CO 2 emissions from natural gas combustion 3. CO 2 emissions at national level for equivalent electricity generation Tones/annum Tones/annum 4-4. Total CO 2 emissions Tones/annum CO 2 emissions reduction from the project Tones/annum % - 47,4 8