Paying for Energy

Huber, Bruce

doi:10.1007/978-3-319-74636-4_7

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…The second option considered is heat recovery from wastewater. In this case, a commercial HUBER TM ThermWin system (HUBER SE, Berching, Germany [26]) was installed, as shown in Figure 5. The system is composed of a connection with the bottom of the sewer pipe, a shaft equipped with a screen, an aboveground heat exchanger, and a heat pump.…”

Section: Heat Recovery From Wastewatermentioning

confidence: 99%

Energy Recovery from Wastewater: A Study on Heating and Cooling of a Multipurpose Building with Sewage-Reclaimed Heat Energy

et al. 2019

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To achieve technically-feasible and socially-desirable sustainable management of urban areas, new paradigms have been developed to enhance the sustainability of water and its resources in modern cities. Wastewater is no longer seen as a wasted resource, but rather, as a mining ground from which to obtain valuable chemicals and energy; for example, heat energy, which is often neglected, can be recovered from wastewater for different purposes. In this work, we analyze the design and application of energy recovery from wastewater for heating and cooling a building in Brno (Czech Republic) by means of heat exchangers and pumps. The temperature and the flow rate of the wastewater flowing in a sewer located in the proximity of the building were monitored for a one-year period, and the energy requirement for the building was calculated as 957 MWh per year. Two options were evaluated: heating and cooling using a conventional system (connected to the local grid), and heat recovery from wastewater using heat exchangers and coupled heat pumps. The analysis of the scenarios suggested that the solution based on heat recovery from wastewater was more feasible, showing a 59% decrease in energy consumption compared to the conventional solution (respectively, 259,151 kWh and 620,475 kWh per year). The impact of heat recovery from wastewater on the kinetics of the wastewater resource recovery facility was evaluated, showing a negligible impact in both summer (increase of 0.045 • C) and winter conditions (decrease of 0.056 • C).Sustainability 2020, 12, 116 2 of 11 source of different types of energy: electrical energy from bioelectrochemical wastewater treatment processes [7,8], low-head hydroelectric energy [9], biogas from anaerobic digestion [10], renewable fuels from residual sludge processing [11,12], and heat energy [13]. The latter is particularly appealing in the framework of water-energy sustainable urban development; in particular, the heat energy recovery potential from wastewater could possibly be even higher than its recoverable chemical energy potential [14,15], and it does not require biological treatment to be converted into a directly usable form. Waste heat from wastewater is reportedly able to generate electrical energy via a thermoelectric generator [16], but the implementation of this is difficult within an urban context. A more accessible technology is the energy recovery from wastewater using heat exchangers installed directly in the sewage collection system [17]. A heat exchanger is installed in direct contact with the wastewater that serves as a heat source or sink, and is later connected to a heat pump and then to the heating and cooling system of a building situated in close proximity. Temperatures of civil wastewater may be more than 25-27 • C in domestic outflows [18], representing a significant thermal energy source [16]; at the inlet of water treatment plants or water resource recovery facilities (WRRFs), the temperature is far lower (15-25 • C or lower, depending on the climate) [16,19,20], and thus,...

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Section: Heat Recovery From Wastewatermentioning

confidence: 99%

Energy Recovery from Wastewater: A Study on Heating and Cooling of a Multipurpose Building with Sewage-Reclaimed Heat Energy

et al. 2019

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Regulation of Micro and Local Power Markets

Kuiken

2019

Micro and Local Power Markets

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Renewable Energy in Russia: System Analysis of Barriers

et al. 2021

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Considering the current ecological situation in the modern world, the quality of life depends not so much on a stable energy supply as on an environmentally friendly way of producing and consuming energy, which has turned social and research attention to the opportunities of renewable energy systems (RES). In spite of the vital necessity of transitioning to environmentally friendly energy production, the implementation and development of renewable energy technologies face a range of barriers: socio-cultural, technological, economic, institutional and environmental. To overcome these barriers, the authors of this article use the systems approach to gain deeper understanding of RES interconnection and interdependence. They apply STEEP analysis for classification and qualitative analysis of RES development barriers in Russia. The article proposes the analytical methodology, which reveals system specifications of the national RES development barriers and predicts the chain reaction of overcoming particular barriers. Using this methodology, the authors identify the main socio-cultural roots of RES development barriers in Russia: state control of the development of the energy sector, the political stake in hydrocarbons and the lack of consistent policies on RES development. The authors’ suggested analysis methodology is appropriate for identifying the root problems in energy socio-economic systems and for effective decision-making process in the energy sector.

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Paying for Energy

Cited by 3 publications

References 21 publications

Energy Recovery from Wastewater: A Study on Heating and Cooling of a Multipurpose Building with Sewage-Reclaimed Heat Energy

Energy Recovery from Wastewater: A Study on Heating and Cooling of a Multipurpose Building with Sewage-Reclaimed Heat Energy

Regulation of Micro and Local Power Markets

Renewable Energy in Russia: System Analysis of Barriers

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