Energy consumption, costs and environmental impacts for urban water cycle services: Case study of Oslo (Norway)

Govindarajan, Venkatesh; Brattebø, Helge

doi:10.1016/j.energy.2010.12.040

Cited by 146 publications

(78 citation statements)

References 16 publications

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“…The recovery of wastewater energy from WWTPs can be considered an environmentally friendly, approved and economically competitive technology as numerous feasibility studies and realized wastewater heat recovery systems throughout Europe, for instance in Switzerland [26,27], Scandinavia [28,29] and Germany [30,31], have demonstrated. In Austria, wastewater heat recovery is to date not as prevalent as in the above-mentioned countries, although some projects have been realized already [25].…”

Section: Introductionmentioning

confidence: 99%

Mapping Thermal Energy Resource Potentials from Wastewater Treatment Plants

et al. 2015

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Wastewater heat recovery via heat exchangers and heat pumps constitutes an environmentally friendly, approved and economically competitive, but often underestimated technology. By introducing the spatial dimension in feasibility studies, the results of calculations change considerably. This paper presents a methodology to estimate thermal energy resource potentials of wastewater treatment plants taking spatial contexts into account. In close proximity to settlement areas, wastewater energy can ideally be applied for heating in mixed-function areas, which very likely have a continuous heat demand and allow for an increased amount of full-load hours compared to most single-use areas. For the Austrian case, it is demonstrated that the proposed methodology leads to feasible results and that the suggested technology might reduce up to 17% of the Austrian global warming potential of room heating. The method is transferrable to other countries as the input data and calculation formula are made available. A broad application of wastewater energy with regard to spatial structures and spatial development potentials can lead to (1) increasing OPEN ACCESSSustainability 2015, 7 12989 energy efficiency by using a maximum of waste heat and (2) a significant reduction of (fossil) energy consumption which results in a considerable reduction of the global warming potential of the heat supply (GWP) if electricity from renewables is used for the operation of heat pumps.

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Section: Introductionmentioning

confidence: 99%

Mapping Thermal Energy Resource Potentials from Wastewater Treatment Plants

et al. 2015

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“…The environmental impact these operations generate is relevant when the grid is stagnant, because there is no impact of DWTDN construction (Venkatesh & Brattebø, 2012). Nevertheless, previous studies have concluded that the resource consumption of the maintenance phase is negligible compared with the energy consumed to pump water (Venkatesh & Brattebø, 2011;Piratla et al, 2012;Del Borghi et al, 2013). For this reason, the maintenance phase was not considered in this study.…”

Section: Drinking Water Transport and Distribution Networkmentioning

confidence: 98%

Environmental assessment of drinking water transport and distribution network use phase for small to medium-sized municipalities in Spain

Sanjuan-Delmás

Petit‐Boix

Gasol

et al. 2015

Journal of Cleaner Production

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“…Energy consumption in water supplied and wastewater treated in Spain is similar to energy consumption in Southern California: 2.9 kWh/m 3 (California Energy Commission, 2006), and in Germany: 2.69 kWh/m 3 (Hardi & Garrido, 2010), although it differs from energy consumption in Northern California: 0.9 kWh/m 3 (California Energy Commission, 2006), and Oslo: 1.25 kWh/m 3 (Venkatesh & Brattebø, 2011).…”

Section: Introductionmentioning

confidence: 97%

The incorporation of the study into water consumption in energy audits in schools

Sánchez-Torija

Gómez-Rubiera

Frutos

2017

rdlc

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The approach of energy audits usually disregards the study of water as it considers that the supply does not involve energy consumption within the building. This paper aims to make visible both the energy footprint involved in ensuring safe water for human consumption and the collection and treatment of waste water. Furthermore, a methodology for conducting an energy audit is shown for the study of water consumption and applies it to a school to verify whether the measures proposed to reduce the consumption of water and the energy associated to it are viable. A school is chosen for three reasons. It is medium sized so the results can be extrapolated to other buildings. It presents a relevant water consumption due to the number of users, but without it being as high as a swimming pool might be. Finally it does not have a water heating system (there are no showers in the gym) so it only studies the energy consumption associated with drinking water without incorporating the effects of energy consumption for water heating.Key words: Water, energy audit, energy efficiency, sustainability, school. ResumenEl planteamiento de las auditorías energéticas al uso habitualmente prescinde del estudio del agua al considerar que dicho suministro no conlleva un consumo de energía dentro del edificio. El presente trabajo pretende visibilizar la huella energética que supone disponer de agua apta para el consumo humano así como la recogida y tratamiento de las aguas una vez han sido usadas. Adicionalmente se muestra una metodología para la realización de la auditoría energética en cuanto al estudio del consumo de agua se refiere y se aplica a un centro docente para verificar si las medidas que se proponen para reducir el consumo de agua y de energía asociado al mismo son viables. Se escoge un centro docente para el estudio por tres motivos: tiene un tamaño medio por lo que sus resultados son extrapolables a otros edificios; presenta un consumo de agua significativo debido al número de usuarios, pero sin resultar tan elevado como pudiera ser una piscina; finalmente, no dispone de instalación de calentamiento de agua (no hay duchas en el polideportivo) por lo que se puede estudiar exclusivamente el consumo de energía asociado al consumo de agua sin incorporar los efectos del consumo energético para calentar el agua.

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Energy consumption, costs and environmental impacts for urban water cycle services: Case study of Oslo (Norway)

Cited by 146 publications

References 16 publications

Mapping Thermal Energy Resource Potentials from Wastewater Treatment Plants

Mapping Thermal Energy Resource Potentials from Wastewater Treatment Plants

Environmental assessment of drinking water transport and distribution network use phase for small to medium-sized municipalities in Spain

The incorporation of the study into water consumption in energy audits in schools

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