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Höök, Mikael, DocentORCID iD iconorcid.org/0000-0002-6379-7104
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Publications (10 of 75) Show all publications
Ren, K., Tang, X., Jin, Y., Wang, J., Feng, C. & Höök, M. (2019). Bi-objective optimization of water management in shale gas exploration with uncertainty: A case study from Sichuan, China. Resources, Conservation and Recycling, 143, 226-235
Open this publication in new window or tab >>Bi-objective optimization of water management in shale gas exploration with uncertainty: A case study from Sichuan, China
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2019 (English)In: Resources, Conservation and Recycling, ISSN 0921-3449, E-ISSN 1879-0658, Vol. 143, p. 226-235Article in journal (Refereed) Published
Abstract [en]

Shale gas exploration relies heavily on freshwater inputs while generating large amounts of wastewater. With the quick development of shale gas, water management during exploration has increasingly become a hotspot from both environmental and economic perspectives. This study investigated all the key water-consuming phases in exploration and optimized the freshwater use and flowback water control using a bi-objective programming model with the consideration of uncertainties in each phase, aiming at the optimal trade-offs between economic and environmental objectives. The model conducted a case study of shale gas projects in Sichuan, China. The results show that (a) Tolerance of the uncertainty in water demand for hydraulic fracturing can effectively reduce both economic and environment cost, thereby reducing total system cost. (b) System costs depends on risk preferences of decision-makers. (c) Direct reuse is the best strategy to treat wastewater at the early phase of hydraulic fracturing; while more constraints other than onsite treatment costs should be considered when treating produced water during the production phase. (d) There exists an "economics of scale" in the water management during shale gas exploration.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV, 2019
Keywords
Shale gas, Water management, Bi-objective optimization, Uncertainty, Hydraulic fracturing
National Category
Environmental Sciences
Identifiers
urn:nbn:se:uu:diva-378619 (URN)10.1016/j.resconrec.2019.01.003 (DOI)000458222600024 ()
Funder
StandUp
Available from: 2019-03-11 Created: 2019-03-11 Last updated: 2019-03-11Bibliographically approved
Takeda, K., Purevsuren, N., Tokimatsu, K., Ikegami, M. & Höök, M. (2019). The Import Structure of LNG from Russia to Japan by Cognitive Map and Text Analysis. In: : . Paper presented at 11th International Symposium on Environmentally Conscious Design and Inverse Manufacturing (EcoDesign2019), Yokohama, Japan, November 25-27, 2019.. Yokohama
Open this publication in new window or tab >>The Import Structure of LNG from Russia to Japan by Cognitive Map and Text Analysis
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2019 (English)Conference paper, Published paper (Other academic)
Abstract [en]

Japanese energy policy was shifted to natural gas use due to drastic situation domestic and international energy situation, such as the Fukushima Daiichi nuclear accident. Accordingly, this study analyzes the structure of natural gas development project and trading between Japan and Russia, as Russia is increasingly becoming an important major supplier of natural gas, which is reflected in the bilateral trade. This study will analyze the two LNG projects as a representative case of the multinational development project of natural gas from the perspective of energy security, economy, technology, and politics. The method of this analysis is “cognitive map” and “text analysis” to quantify the qualitative data collected from four major Japanese newspapers during the period of 1991-2017. One of the findings of this study is that, the Russian government has strengthened exporting LNG to East Asia as a state project since the first Putin administration especially after the US Shale revolution and the Ukrainian crisis, while the Japanese side is driven by major private corporations such as the construction of infrastructure which is little affected from international politics.

Place, publisher, year, edition, pages
Yokohama: , 2019
Keywords
Energy policy, LNG import, Russia, Japan, LNG projects
National Category
Energy Systems Other Environmental Engineering
Research subject
Natural Resources and Sustainable Development
Identifiers
urn:nbn:se:uu:diva-392600 (URN)
Conference
11th International Symposium on Environmentally Conscious Design and Inverse Manufacturing (EcoDesign2019), Yokohama, Japan, November 25-27, 2019.
Available from: 2019-09-06 Created: 2019-09-06 Last updated: 2019-09-16Bibliographically approved
Feng, C., Tang, X., Jin, Y. & Höök, M. (2019). The role of energy-water nexus in water conservation at regional levels in China. Journal of Cleaner Production, 210, 298-308
Open this publication in new window or tab >>The role of energy-water nexus in water conservation at regional levels in China
2019 (English)In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 210, p. 298-308Article in journal (Refereed) Published
Abstract [en]

Energy and water resources are drawing increasing attention in China as indispensable elements of economic development and social stability. Energy production has led to widely debated issues such as water shortage and water pollution. Studies on their interrelation - i.e. the energy-water nexus - indicate that energy conservation impacts water resources. Energy conservation can bring synergy on water resources, but it is an unsettle issue to what degree energy conservation could indirectly protect water resources. In this work, we built an accounting framework to assess the synergy of energy conservation on both water quantity and quality at regional levels. Multiregional input-output (MRIO) analysis and economic parameters such as water price and treatment costs of water resources are applied to evaluate the value of synergy. The results show that Jiangsu saved the largest quantity of water with a volume of63.7 x 10(8)m(3), while Hunan achieved the largest reduction of wastewater with a volume of 3.2 x 10(8)m(3) during 2007-2012. The total synergy was divided into two aspects: internal and external. The former was generally larger in most regions except Qinghai, Ningxia, Xinjiang, Hainan, Shaanxi, Anhui and Inner Mongolia. The results of an economic assessment show that China achieved 1.1 x 10(12) yuan of economic benefit through the synergy benefits from a holistic perspective. Jiangsu, Shanghai, Fujian, Shandong and Heilongjiang were primary beneficiaries due to their significant synergistic water saving and high shadow price of water resources. The proposed assessment framework may help understand the situation of regional resources conservation from both synergistic and economic perspectives. (C) 2018 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
ELSEVIER SCI LTD, 2019
Keywords
Energy-water nexus, Synergy effect, Energy conservation, Wastewater discharge, Multiregional input-output analysis, Economic benefits
National Category
Environmental Sciences
Identifiers
urn:nbn:se:uu:diva-377207 (URN)10.1016/j.jclepro.2018.10.335 (DOI)000456762600027 ()
Available from: 2019-02-25 Created: 2019-02-25 Last updated: 2019-02-25Bibliographically approved
Tokimatsu, K., Höök, M., McLellan, B., Wachtmeister, H., Murakamie, S., Yasuoka, R. & Nishio, M. (2018). Energy modeling approach to the global energy-mineral nexus: Exploring metal requirements and the well-below 2 degrees C target with 100 percent renewable energy. Paper presented at 9th International Conference on Applied Energy (ICAE), AUG 21-24, 2017, Cardiff, WALES. Applied Energy, 225, 1158-1175
Open this publication in new window or tab >>Energy modeling approach to the global energy-mineral nexus: Exploring metal requirements and the well-below 2 degrees C target with 100 percent renewable energy
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2018 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 225, p. 1158-1175Article in journal (Refereed) Published
Abstract [en]

Detailed analysis of pathways to future sustainable energy systems is important in order to identify and overcome potential constraints and negative impacts and to increase the utility and speed of this transition. A key aspect of a shift to renewable energy technologies is their relatively higher metal intensities. In this study a bottom-up cost-minimizing energy model is used to calculate aggregate metal requirements in different energy technology including hydrogen and climate policy scenarios and under a range of assumptions reflecting uncertainty in future metal intensities, recycling rate and life time of energy technologies. Metal requirements are then compared to current production rates and resource estimates to identify potentially "critical" metals. Three technology pathways are investigated: 100 percent renewables, coal & nuclear and gas & renewables, each under the two different climate policies: net zero emissions satisfying the well-below 2 degrees C target and business as usual without carbon constraints, resulting together in six scenarios. The results suggest that the three different technology pathways lead to an almost identical degree of warming without any climate policy, while emissions peaks within a few decades with a 2 degrees C policy. The amount of metals required varies significantly in the different scenarios and under the various uncertainty assumptions. However, some can be deemed "critical" in all outcomes, including Vanadium. The originality of this study lies in the specific findings, and in the employment of an energy model for the energy-mineral nexus study, to provide better understanding for decision making and policy development.

Keywords
2 degrees C target, 100% Renewable energy scenario, Energy-mineral nexus, Zero emissions, Metal requirement, Hydrogen
National Category
Energy Systems
Identifiers
urn:nbn:se:uu:diva-361024 (URN)10.1016/j.apenergy.2018.05.047 (DOI)000438181000089 ()
Conference
9th International Conference on Applied Energy (ICAE), AUG 21-24, 2017, Cardiff, WALES
Funder
Swedish Research Council, 2014-5246StandUp
Available from: 2018-09-20 Created: 2018-09-20 Last updated: 2018-11-12Bibliographically approved
Wang, W., Tang, X., Yang, X., Zhang, B., Zhang, Y. & Höök, M. (2018). Energy savings in China's energy sectors and contributions to air pollution reduction in the 12th Five Year Plan. Journal of Cleaner Production, 200, 305-317
Open this publication in new window or tab >>Energy savings in China's energy sectors and contributions to air pollution reduction in the 12th Five Year Plan
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2018 (English)In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 200, p. 305-317Article in journal (Refereed) Published
Abstract [en]

Energy efficiency and air pollution mitigation are critical issues for future development of the Chinese economy. Energy savings and their contribution to reduced air pollution from energy sectors during the 12th Five Year Plan are assessed using input-output analysis. A new dynamic quantitative method was developed to explore key sectors and identify critical paths for efficient emission reductions from energy industries. All the energy intensive key sectors, including Metal, Power, Chemical Products, Nonmetal are used to determine critical paths for emission reductions. Results indicate that the Coal Sector failed to achieve significant energy savings and did not contribute to direct and overall emissions reductions. The Oil Sector only achieved co-effects for reduction of overall waste gas, SO2, and particulates, while the Power Sector achieved emission reductions of all air pollutants. The results suggest that Chinese government should enact four main measures to achieve effective targets for energy savings and emission reductions: (1) Strengthen energy conservation in Coal and Oil Sectors, particularly the Coal Sector. (2) Promote energy conservation and emission reductions in highly energy intensive sectors to help emission reductions from other sectors. (3) Promote synergy effects of energy savings and emission reductions to enterprises. (4) Set lowest emission reduction targets for each department combined with targets for energy savings.

Keywords
Energy savings, Air pollution, Emission reduction, Energy sectors
National Category
Energy Systems Environmental Management Environmental Analysis and Construction Information Technology Economics Geosciences, Multidisciplinary
Research subject
Natural Resources and Sustainable Development
Identifiers
urn:nbn:se:uu:diva-358455 (URN)10.1016/j.jclepro.2018.07.207 (DOI)000445715400027 ()
Funder
StandUp
Available from: 2018-08-29 Created: 2018-08-29 Last updated: 2018-10-19Bibliographically approved
Höök, M. (2018). Mapping Chinese Supply. Nature Energy, 3(3), 166-167
Open this publication in new window or tab >>Mapping Chinese Supply
2018 (English)In: Nature Energy, ISSN 0028-212X, E-ISSN 2213-0217, Vol. 3, no 3, p. 166-167Article in journal, Editorial material (Other academic) Published
Abstract [en]

Documenting the emissions and net energy of a crude supply could be essential to meeting national emission and energy security targets. Using data from hundreds of fields worldwide, a well-to-refinery study presents a high-granularity profile of China’s crude oil supply in terms of emissions and energy return on input.

Keywords
bottom-up modelling, petroleum, carbon intensity
National Category
Geosciences, Multidisciplinary Other Earth and Related Environmental Sciences Energy Systems
Research subject
Natural Resources and Sustainable Development
Identifiers
urn:nbn:se:uu:diva-347592 (URN)10.1038/s41560-018-0103-6 (DOI)000427602200007 ()
Funder
Swedish Research Council, 2014-5246
Available from: 2018-04-04 Created: 2018-04-04 Last updated: 2018-07-19Bibliographically approved
Wachtmeister, H., Henke, P. & Höök, M. (2018). Oil projections in retrospect: Revisions, accuracy and current uncertainty. Applied Energy, 220, 138-153
Open this publication in new window or tab >>Oil projections in retrospect: Revisions, accuracy and current uncertainty
2018 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 220, p. 138-153Article in journal (Refereed) Published
Abstract [en]

Scenarios and projections are important for decision and policy making. Accuracy of past projections can be useful for both scenario users and developers, for insight on current projection uncertainty, and for guiding improvement efforts. This paper compiles projections of oil production, oil prices and upstream investments from the years 2000 to 2016 from the annual World Energy Outlook by the International Energy Agency, and investigates revisions and accuracy of past projections and implied uncertainty of current ones. Revisions of world oil production, price and investments have been motivated by a combination of demand and supply factors. Downward revisions are mainly allocated to OPEC, while recent upward revisions are due to unconventional oil, in particular US tight oil. Non-OPEC conventional projections have been stable. Price and investments have been revised mostly upwards. Projection accuracy follows the size and directions of these revisions, with high accuracy for Non-OPEC (mean absolute percentage error of 4.8% on a 5 year horizon) and low for OPEC (8.9%) and unconventional (37%). Counteracting error directions contribute to accurate total World oil supply projections (4%) while price projections have low accuracy (37%). Scenario users should be aware of implied uncertainty of current oil projections. In planning and decision making, uncertainty ranges such as those presented here can be used as benchmarks. Scenario developers should focus improvements efforts on three areas in particular: tight oil, OPEC and new technology.

Keywords
Oil projections, Scenarios, Revisions, Accuracy, Uncertainty, IEA
National Category
Energy Systems
Research subject
Natural Resources and Sustainable Development
Identifiers
urn:nbn:se:uu:diva-347573 (URN)10.1016/j.apenergy.2018.03.013 (DOI)000432884500013 ()
Funder
Swedish Research Council, 2014-5246StandUp
Available from: 2018-04-04 Created: 2018-04-04 Last updated: 2018-08-20Bibliographically approved
Han, S., Zhang, B., Sun, X., Han, S. & Höök, M. (2017). China's Energy Transition in the Power and Transport Sectors from a Substitution Perspective. Energies, 10(5), Article ID 600.
Open this publication in new window or tab >>China's Energy Transition in the Power and Transport Sectors from a Substitution Perspective
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2017 (English)In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 10, no 5, article id 600Article in journal (Refereed) Published
Abstract [en]

Facing heavy air pollution, China needs to transition to a clean and sustainable energy system, especially in the power and transport sectors, which contribute the highest greenhouse gas (GHG) emissions. The core of an energy transition is energy substitution and energy technology improvement. In this paper, we forecast the levelized cost of electricity (LCOE) for power generation in 2030 in China. Cost-emission effectiveness of the substitution between new energy vehicles and conventional vehicles is also calculated in this study. The results indicate that solar photovoltaic (PV) and wind power will be cost comparative in the future. New energy vehicles are more expensive than conventional vehicles due to their higher manufacturer suggested retail price (MSRP). The cost-emission effectiveness of the substitution between new energy vehicles and conventional vehicles would be $96.7/ton or $114.8/ton. Gasoline prices, taxes, and vehicle insurance will be good directions for policy implementation after the ending of subsidies.

Place, publisher, year, edition, pages
MDPI AG, 2017
Keywords
energy transition, energy substitution, clean energy, cost-emission efficiency
National Category
Energy Systems
Identifiers
urn:nbn:se:uu:diva-328720 (URN)10.3390/en10050600 (DOI)000403048400019 ()
Funder
StandUp
Available from: 2017-09-01 Created: 2017-09-01 Last updated: 2017-11-29Bibliographically approved
Chen, Y., Feng, L., Wang, J. & Höök, M. (2017). Emergy-based energy return on investment method for evaluating energy exploitation. Energy, 128, 540-549
Open this publication in new window or tab >>Emergy-based energy return on investment method for evaluating energy exploitation
2017 (English)In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 128, p. 540-549Article in journal (Refereed) Published
Abstract [en]

To consider the environmental impacts of energy resource exploitation and better estimate the energy return of investment (EROI), this paper establishes a new emergy-based method (EmEROI) that can capture the essence of energy resource exploitation. The EmEROI method treats environmental impacts and labor as particular forms of energy, and all forms of energy can be quantified by solar transformity, which is expressed in emjoules as a common unit. The Daqing oilfield is used as an example, and the corresponding EmEROI value is calculated via the proposed method. The results are then compared with standard EROI estimates. Our EmEROI result is much lower than the standard EROI result and presents a more pronounced declining trend. Our results also indicated that the EmEROI estimates conform well to actual conditions and are not as affected by industrial energy intensity levels as the standard EROI. Thus, EmEROI has the potential for use as an integral aspect of energy resource exploitation project evaluations. (C) 2017 Elsevier Ltd. All rights reserved.

Keywords
EROI, Emergy, Energy resources exploitation, Daqing oilfield
National Category
Energy Systems
Identifiers
urn:nbn:se:uu:diva-329701 (URN)10.1016/j.energy.2017.04.058 (DOI)000403987700046 ()
Available from: 2017-10-09 Created: 2017-10-09 Last updated: 2017-10-09Bibliographically approved
Jin, Y., Tang, X., Feng, C. & Höök, M. (2017). Energy and water conservation synergy in China: 2007-2012. Resources, Conservation and Recycling, 127, 206-215
Open this publication in new window or tab >>Energy and water conservation synergy in China: 2007-2012
2017 (English)In: Resources, Conservation and Recycling, ISSN 0921-3449, E-ISSN 1879-0658, Vol. 127, p. 206-215Article in journal (Refereed) Published
Abstract [en]

Energy and water issues are interrelated and have significant impacts on the economy. The amount and intensity of energy and water consumption must be controlled, which was clearly stated in the "11th Five-Year" Plan and "12th Five-Year" Plan. The energy-water nexus is a useful approach to integrate economic sectors. Energy production consumes large inputs of energy and water, while producing most of the energy required by other sectors. This synergy between energy conservation and water saving in energy sectors is intricate. This study assesses the synergistic effect between energy conservation and water saving that has been achieved by energy sectors in China during the 2007-2012 period. The research results suggest that energy sectors have completely achieved 12.40 x 10(8) m(3) water saving through energy conservation and 1.12 x 10(6) tce energy conservation through water saving. Coal, oil and gas production mainly consumed water in indirect ways, while electricity generation primarily consumed water in a direct way. The synergistic energy conservation of the electric power sector was significant and was much larger than that of the coal production sector as well as oil and gas production sector. Prominent water saving can be obtained through improved energy conservation in China's energy sectors.

Keywords
Energy conservation, Water saving, Synergistic effect, Input-output analysis
National Category
Environmental Sciences
Identifiers
urn:nbn:se:uu:diva-340672 (URN)10.1016/j.resconrec.2017.09.004 (DOI)000413614700022 ()
Funder
StandUp
Available from: 2018-02-05 Created: 2018-02-05 Last updated: 2018-02-05Bibliographically approved
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ORCID iD: ORCID iD iconorcid.org/0000-0002-6379-7104

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