The Waste Handling System of the Waste Disposal Department of the City of Zurich (Abfuhrwesen Zurich)

This paper outlines the system used by the authorities in Zurich to treat and recycle waste in an environmentally acceptable way. The waste incineration system produces power and incorporates a district heating system as well as a wet gas-cleaning process.

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Upgrading a District Heating System by Means of the Integration of Modular Heat Pumps, Geothermal Waters, and PVs for Resilient and Sustainable Urban Energy

Energies ◽

10.3390/en14092347 ◽

2021 ◽

Vol 14 (9) ◽

pp. 2347

Author(s):

Elżbieta Hałaj ◽

Jarosław Kotyza ◽

Marek Hajto ◽

Grzegorz Pełka ◽

Wojciech Luboń ◽

...

Keyword(s):

District Heating ◽

Heating System ◽

Upper Jurassic ◽

Heat Pumps ◽

Water Levels ◽

Energy Potential ◽

Geothermal Waters ◽

District Heating System ◽

Heating And Cooling ◽

The City

Krakow has an extensive district heating network, which is approximately 900 km long. It is the second largest city in terms of the number of inhabitants in Poland, resulting in a high demand for energy—for both heating and cooling. The district heating of the city is based on coal. The paper presents the conception of using the available renewable sources to integrate them into the city’s heating system, increasing the flexibility of the system and its decentralization. An innovative solution of the use of hybrid, modular heat pumps with power dependent on the needs of customers in a given location and combining them with geothermal waters and photovoltaics is presented. The potential of deep geothermal waters is based on two reservoirs built of carbonate rocks, namely Devonian and Upper Jurassic, which mainly consist of dolomite and limestone. The theoretical potential of water intake equal to the nominal heating capacity of a geothermal installation is estimated at 3.3 and 2.0 MW, respectively. Shallow geothermal energy potential varies within the city, reflecting the complex geological structure of the city. Apart from typical borehole heat exchangers (BHEs), the shallower water levels may represent a significant potential source for both heating and cooling by means of water heat pumps. For the heating network, it has been proposed to use modular heat pumps with hybrid sources, which will allow for the flexible development of the network in places previously unavailable or unprofitable. In the case of balancing production and demand, a photovoltaic installation can be an effective and sufficient source of electricity that will cover the annual electricity demand generated by the heat pump installation, when it is used for both heating and cooling. The alternating demand of facilities for heating and cooling energy, caused by changes in the seasons, suggests potential for using seasonal cold and heat storage.

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Co-generation: Increasing energy efficiency in Bosnia and Herzegovina

Thermal Science ◽

10.2298/tsci0703085l ◽

2007 ◽

Vol 11 (3) ◽

pp. 85-100

Author(s):

Alija Lekic ◽

Semsudin Hadziefendic

Keyword(s):

Bosnia And Herzegovina ◽

Low Voltage ◽

Boiler House ◽

District Heating ◽

Electrical Energy ◽

Heating System ◽

District Heating System ◽

The Government ◽

Electrical Distribution Network ◽

The City

The main sources for power generation in Bosnia and Herzegovina are domestic coals, mainly lignite and brown coals, which are relatively characterized with a high content of sulphur (3-5%) and incombustibles (?30%). From the 70?s, use of this type of fuels was not allowed in the city of Sarajevo due to very unfavorable emissions to the atmosphere, during the heating period, and since then Sarajevo has been supplied with natural gas. All the heating installations in the city were reconstructed and adapted. The district heating system Toplane Sarajevo is supplied with electrical energy from the Public electrical distribution network (Elektrodistribucija Sarajevo) at low voltage (0.4 kV). The boiler-house Dobrinja III-2 (KDIII-2), from the district heating system of Sarajevo Suburb Dobrinja, which was not in use after the war 1992-1995, had a lot of advantages for the reconstruction into the co-generation plant. The Government of Canton Sarajevo financially supported this proposal. An analysis of co-generations for the district heating system and a selection of most appropriate co-generation systems were made. In the proposed conceptual design, the co-generation KDIII-2 was located in the existing boiler-house KDIII-2, connected with the heating system in Dobrinja. The operating costs of production of electricity and heat were evaluated in the study and compared with the costs of conventional energy supply to the district heating system. This analysis resulted in economic indicators, which showed that this investment was economically viable, and it also determined the payback period of the investment. In this paper results of the mentioned study and an overview of co-generation in Bosnia and Herzegovina are presented.

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Comparing CO2 and NOX emissions from a district heating system with mass-burn waste incineration versus likely alternative solutions – City of Trondheim, 1986–2009

Resources Conservation and Recycling ◽

10.1016/j.resconrec.2011.11.001 ◽

2012 ◽

Vol 60 ◽

pp. 147-158 ◽

Cited By ~ 7

Author(s):

Helge Brattebø ◽

Marte Reenaas

Keyword(s):

District Heating ◽

Waste Incineration ◽

Heating System ◽

Nox Emissions ◽

District Heating System ◽

Alternative Solutions

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The development of the district heat supply system of the city of Karaganda

E3S Web of Conferences ◽

10.1051/e3sconf/201913501031 ◽

2019 ◽

Vol 135 ◽

pp. 01031

Author(s):

Mereke Agilbayeva ◽

Alexey Kalinin

Keyword(s):

Heat Supply ◽

District Heating ◽

Heat Supply System ◽

Heating System ◽

Supply System ◽

The State ◽

District Heating System ◽

Pipeline Networks ◽

The City ◽

Heat Loads

The district heating system of Karaganda (Kazakhstan) is considered in the article. The characteristics of the existing cogenerators and the state of the pipeline networks are given. Given the analysis of the existing state of the entire district heating of Karaganda. Proposed the program for the integrated development of the heat supply system bringing world experience in implementing the main development and modernization of heating networks. Shown the experience of reconstruction of heat supply facilities in the city of Karaganda within the framework of the state loan program “Nurly Zhol”. Based on the statistical data on the development of the city of Karaganda and its heat supply system the predicted heat loads are given until 2030. Due to the shortage of available heat capacity, options for the development of a centralized heat supply system in Karaganda are given and analyzed.

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Evaluation of integration of solar energy into the district heating system of the city of Velika Gorica

Thermal Science ◽

10.2298/tsci151106106a ◽

2016 ◽

Vol 20 (4) ◽

pp. 1049-1060 ◽

Cited By ~ 10

Author(s):

Andreu Felipe ◽

Daniel Schneider ◽

Goran Krajacic

Keyword(s):

Low Temperature ◽

District Heating ◽

Economic Assessment ◽

Heating System ◽

Solar Heating ◽

District Heating System ◽

High Penetration ◽

The City ◽

Heating Plant ◽

Reduction Of Costs

In the current situation the district heating system supplies the 32% of the total thermal consumption in the City of Velika Gorica. The main issue in the district heating system is the utilization of 14 small and distributed heat plants, each providing heat to a separate and individually disconnected heating grid. Reduction of costs and CO2 emissions can be reached with a high penetration of renewable sources. The aim of this paper is to evaluate and design the integration of a Central Solar Heating Plant with Seasonal Storage into the district heating system of the City. An economic assessment was made with a pessimistic and an optimistic prediction of the solar heat cost for ground mounted collectors and roof mounted collectors. The seasonal storage was chosen to be pit thermal energy storage; the system was modeled as a low-temperature district heating system with the real thermal demands of a district heating plant.

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Mogućnost korišćenјa toplotnih pumpi sa otpadnom toplotom iz postrojenјa za prečišćavanјe otpadnih voda kao toplotnim izvorom

Energija, Ekonomija, Ekologija ◽

10.46793/eee21-1.11i ◽

2021 ◽

Vol 23 (1) ◽

pp. 11-15

Author(s):

Dejan Ivezić ◽

◽

Marija Živković ◽

Aleksandar Madžarević ◽

Boban Pavlović

Keyword(s):

Wastewater Treatment ◽

Good Practice ◽

Treatment Plant ◽

District Heating ◽

Heating System ◽

Heat Pumps ◽

Treated Wastewater ◽

District Heating System ◽

The City ◽

The Eu

In the next period, it is planned to build several wastewater treatment systems in major cities in Serbia. Experiences from the facilities currently in operation show that treated wastewater (taking into consideration available flow and temperature) could be a significant source of renewable energy. The paper presents examples of good practice in the use of this energy source by heat pumps in district heating systems in the EU countries. The operation of the wastewater treatment plant in the city of Šabac was analysed and the possibility of its use in the local district heating system was considered.

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MAIN CONCEPTUAL APPROACHES AND TECHNICAL SOLUTIONS OF THE HEAT SUPPLY SCHEME OF KYIV FOR THE PERIOD UNTIL 2030

Thermophysics and Thermal Power Engineering ◽

10.31472/ttpe.3.2021.5 ◽

2021 ◽

Vol 43 (3) ◽

pp. 36-43

Author(s):

A. Sigal ◽

D. Paderno ◽

N.A. Nizhnik

Keyword(s):

Heat Supply ◽

District Heating ◽

Heating System ◽

Green Energy ◽

Hydrogen Fuel ◽

City Center ◽

District Heating System ◽

Heating Scheme ◽

Technical Solutions ◽

The City

The analysis of the district heating system of the city of Kyiv and its main operational indicators is presented. The main problems that need to be solved in the development of a new District Heating Scheme are described. The basic conceptual directions and technical decisions concerning development of system of heat supply of the city for the settlement period are resulted. As part of the development of the Heat Supply Scheme of Kyiv for the period up to 2030, a powerful heat source in the city center will be gradually converted to hydrogen fuel obtained from "green" energy by electrolysis (until the needs of ST-1 are fully met after 2030).

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