Optimization of a Local District Heating Plant Under Fuel Flexibility and Performance

2011 ◽  
Author(s):  
Souman Rudra ◽  
Lasse Rossendahl ◽  
Niels From
Keyword(s):  
Natural Gas ◽  
Fossil Fuels ◽  
System Analysis ◽  
Reference Model ◽  
District Heating ◽  
Heating System ◽  
Energy System ◽  
District Heating System ◽  
And Performance ◽  
Heating Plant

Brovst is a small district in Denmark. Based on the case of Brovst, this paper analyses the role of district heating in future Renewable Energy Systems. The present use of fossil fuels in the Brovst DHP (district heating plant) represents an increasing environmental and climate-related load. So, an investigation has been made to reduce the use of fossil fuels for district heating system and make use of the local renewable resources (Biogas, Solar and Geothermal) for district heating purpose. In this article, the techno-economic assessment is achieved through the development of a suite of models that are combined to give cost and performance data for this district heating system. Different local fuels have been analyzed for different perspectives to find the way to optimize the whole integrated system in accordance with fuel availability and cost. This paper represents the energy system analysis mode energyPRO which has been used to analyses the integration of large scale energy system into the domestic district heating system. A model of the current work on the basis of information from the plant (using fossil fuel) is established and named as a reference model. Then different solutions are calculated for various local fuels in energyPRO. A comparison has been made between the reference model and the basis for individual solutions. The greatest reduction in heat price is obtained by replacing one engine with a new biogas where heat production is divided by 66% of biogas, 13% natural gas engines and 21% natural gas boilers.

scholarly journals Analysis of the Methodology to Obtain Several Key Indicators Performance (KIP), by Energy Retrofitting of the Actual Building to the District Heating Fuelled by Biomass, Focusing on nZEB Goal: Case of Study

Energies ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 93 ◽  
Author(s):  
Rosaura Castrillón Mendoza ◽  
Javier Rey Hernández ◽  
Eloy Velasco Gómez ◽  
Julio San José Alonso ◽  
Francisco Rey Martínez
Keyword(s):  
Energy Efficiency ◽  
Natural Gas ◽  
Energy Management ◽  
District Heating ◽  
Heating System ◽  
Energy System ◽  
Hot Water ◽  
The European Union ◽  
District Heating System ◽  
The University

In order to achieve the objectives of the European 20/20/20 strategy, and to obtain a greater energy efficiency, integration of renewable energies and the reduction of carbon emissions, a District Heating (DH) system has been designed by the University of Valladolid (UVa), Spain, one of the most important DH fed by biomass fuel in Spain, supplying heating and domestic hot water (DHW) to 31 buildings in Valladolid, the majority of them, educational buildings on the University Campus. The aims of this paper were to study the change from an energy system fueled by natural gas to District Heating by biomass in a building on the campus of the University of Valladolid—the School of Engineering (EII)—studying its consumption from its connection to the District Heating system. An energy management methodology such as ISO 50001 is carried out, applied to efficiency systems in buildings, thus establishing new criteria of sustainability and economic value. In this paper, energy management will also be analyzed in accordance with the proposed tools of an Energy Management System (EMS) applied to the EII building, through the measurement of energy parameters, calculation of thermal consumption, thermal energy savings as a result of the change from system to District Heating by biomass, economic savings, reduction of environmental impact and indicators of thermal efficiency I100 and CUSUM indicator. Finally, the primary renewable and non-renewable energy efficiency indicators for the new District Heating system will be determined. The concept of the near Zero Energy Buildings is defined in the European Union (EU) in order to analyze an approach to an nZEB which results from replacing the natural gas heating system by a biomass District Heating system.

DISTRICT HEATING SYSTEM DESIGN FOR RURAL NOVA SCOTIAN COMMUNITIES USING BUILDING SIMULATION AND ENERGY USAGE DATABASES

2009 ◽  
Vol 33 (1) ◽  
pp. 51-64 ◽  
Author(s):  
Jaspreet S. Nijjar ◽  
Alan S. Fung ◽  
Larry Hughes ◽  
Hessam Taherian
Keyword(s):  
System Design ◽  
Energy Demand ◽  
District Heating ◽  
Heating System ◽  
Energy System ◽  
Building Simulation ◽  
Energy Usage ◽  
District Heating System ◽  
District Energy ◽  
Heating Profiles

There are several benefits to district heating systems. The system design requires knowledge of community peak heating load and annual heating energy requirements. For this purpose, a residential energy model was developed using several energy usage databases. Hourly, peak, and annual heating demands were estimated by simulating 15 archetype houses using an hour-by-hour building simulation program, ENERPASS. Estimated heating profiles from model houses were used to design a district heating system for a hypothetical rural community in Nova Scotia. The findings show that building simulation is a very flexible and valuable tool in identifying the required peak and hourly energy demand of a community for the design of district energy system, and biomass district heating system can reduce community greenhouse gas emissions.

scholarly journals Evaluating the Emissions of the Heat Supplied by District Heating Networks through A Life Cycle Perspective

2020 ◽  
Vol 2 (4) ◽  
pp. 392-405
Author(s):  
Francesco Neirotti ◽  
Michel Noussan ◽  
Marco Simonetti
Keyword(s):  
Life Cycle ◽  
Natural Gas ◽  
District Heating ◽  
Heating System ◽  
Plant Production ◽  
Life Cycle Assessment Methodology ◽  
District Heating System ◽  
Heating And Cooling ◽  
Life Cycle Perspective ◽  
Urban Contexts

The Life Cycle Assessment methodology has proven to be effective in evaluating the impacts of goods production throughout their life cycle. While many studies are available on specific products, in recent years a growing interest is related to the analysis of services, including energy supply for final customers. Different LCA evaluations are available for electricity, while the heating and cooling sector has not yet been properly investigated. The objective of this study is the analysis of the specific impacts of the heat supplied to the final users connected to a district heating system, in comparison with traditional individual natural gas boilers, which represent the baseline heating solution in several urban contexts in Europe. The results show that the comparison is heavily dependent on the allocation method used for combined heat and power plant production. District Heating impact on heat supplied to the users can vary from 0.10 to 0.47 kgCO2eq/kWh, while distributed natural gas boilers present an overall impact equal to 0.27 kgCO2eq/kWh.

scholarly journals Long-term Green Innovation Opportunities Within the Hungarian District Heating Sector Towards 2030

2016 ◽  
Vol 4 (1) ◽  
pp. 12-24
Author(s):  
Balint Horvath ◽  
Maria Borocz ◽  
Sandor Zsarnoczai ◽  
Csaba Fogarassy
Keyword(s):  
Natural Gas ◽  
District Heating ◽  
Heating System ◽  
Simple Fact ◽  
District Heating System ◽  
Primary Input ◽  
Cooling Systems ◽  
The Public ◽  
Heating And Cooling

Abstract Natural gas is still the primary input of the Hungarian heating and cooling systems, therefore it still makes most of the overheads. One of the main obstacles of a competitive district heating system is the public opinion which still considers this service more expensive than the traditional heating forms. According to the absolute numbers this assumption might be valid but from a more accurate economic perspective, heat production has more aspects to stress. Most people forget about the simple fact that the maintenance costs of natural gas based systems are rather outsourced to the consumer than in the case of district heating. Furthermore, the uneven rate of the fixed and variable costs of this technology does not prove to be optimal for service developments. Investigating the future tendencies highlight that encouraging the efficiency improvement of district heating and the spread of technological innovation in the sector does not belong to the top priorities. Still, avoiding this problem it could lead serious deadweight losses in the case of the heating sector.

scholarly journals Effects of implementation of co-generation in the district heating system of the Faculty of Mechanical Engineering in Nis

2010 ◽  
Vol 14 (suppl.) ◽  
pp. 41-51 ◽  
Author(s):  
Mladen Stojiljkovic ◽  
Mirko Stojiljkovic ◽  
Bratislav Blagojevic ◽  
Goran Vuckovic ◽  
Marko Ignjatovic
Keyword(s):  
Natural Gas ◽  
Energy Savings ◽  
Boiler House ◽  
District Heating ◽  
Electrical Energy ◽  
Heating System ◽  
Primary Energy ◽  
District Heating System ◽  
Heating Systems ◽  
District Heating Systems

Implementation of co-generation of thermal and electrical energy in district heating systems often results with higher overall energy efficiency of the systems, primary energy savings and environmental benefits. Financial results depend on number of parameters, some of which are very difficult to predict. After introduction of feed-in tariffs for generation of electrical energy in Serbia, better conditions for implementation of co-generation are created, although in district heating systems barriers are still present. In this paper, possibilities and effects of implementation of natural gas fired cogeneration engines are examined and presented for the boiler house that is a part of the district heating system owned and operated by the Faculty of Mechanical Engineering in Nis. At the moment, in this boiler house only thermal energy is produced. The boilers are natural gas fired and often operate in low part load regimes. The plant is working only during the heating season. For estimation of effects of implementation of co-generation, referent values are taken from literature or are based on the results of measurements performed on site. Results are presented in the form of primary energy savings and greenhouse gasses emission reduction potentials. Financial aspects are also considered and triangle of costs is shown.

scholarly journals Natural gas heating in Serbian settlements according to urbanity parameters

2008 ◽  
Vol 6 (1) ◽  
pp. 139-153 ◽  
Author(s):  
Dejan Brkic
Keyword(s):  
Natural Gas ◽  
Distribution System ◽  
Optimal Solution ◽  
District Heating ◽  
Heating System ◽  
Hot Water ◽  
Gas Distribution ◽  
District Heating System ◽  
Energy Supply System ◽  
Gas Heating

Natural gas can be directly used for heating of flats by gas distribution system. Indirectly, heating power plant can disburse natural gas and deliver hot water or steam for heating of flats. Decision of optimal way for gas heating usage is done based on spatial disposal of building, number and size of buildings in settlement, etc. Optimal solution, between gas distribution and district heating system (local or district heating by natural gas), can be done according to methodology (model approach) shown in this paper. According to variety of Serbian settlements (in density, size and layout of buildings) model which has ability to represent their different characteristics is formed. This model could be simple and useful tool for initial decision about energy supply system.

scholarly journals Climate Index for District Heating System

2020 ◽  
Vol 24 (1) ◽  
pp. 406-418
Author(s):  
Ieva Pakere ◽  
Dace Lauka ◽  
Kristiāna Dolge ◽  
Valdis Vitolins ◽  
Ilze Polikarpova ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Natural Gas ◽  
Environmental Impact ◽  
Heat Production ◽  
System Performance ◽  
Energy Supply ◽  
District Heating ◽  
Heating System ◽  
Climate Index ◽  
District Heating System

AbstractDistrict heating (DH) has been highlighted as an important part in future carbon neutral energy supply. However, the performance of different DH systems varies a lot and the existing regulations do not always motivate DH companies to move toward more sustainable heat production. Therefore, this article presents novel methodology for Climate index determination which can be further used for the comparison of DH systems. The Climate index includes seven different indicators which show DH system performance according to energy efficiency, sustainability and environmental impact dimensions. The methodology is applied for 20 different DH systems operating in Latvia. The results show that the performance of 5 natural gas-based DH systems is below the determined climate benchmark.

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