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Nordell, B., Bergman, G. & Wiklund, M. (2018). Development of the Lillpite River Valley after Dam Removal. In: : . Paper presented at International Seminar on Dam Removal, Hudiksvall, Sweden, 24-26 September 2018.
Open this publication in new window or tab >>Development of the Lillpite River Valley after Dam Removal
2018 (English)Conference paper (Other (popular science, discussion, etc.))
Abstract [en]

The Lillpite River Valley stretches 45 km NV, from Piteå at the Gulf of Bothnia. The 619 km2 large catchment area comprises a dozen lakes. The average flow rate of the river is 6.24 m3/s. Lillpite Kraft AB, which owns the two power plants in the Lillpite River, has now applied for a demolition permit after 30 years of unprofitable operation. This demolition will take place in 2020, after which there are no obstacles to the fish's migration in the river. The Lillpite River was famous for its large salmon but also for its trout, grayling and lamprey. River crayfish and freshwater pearl mussel exist in the river, both upstream and downstream of the two dams, and in the brooks. There are even eel and pikeperch in the river, which also hosts beaver and otter. The Lillpite River Economic Association manages the compensation (~30M€ over 50 years) for the wind power intrusion in the area. This organisation is committed to make the river the fishing water it once was, as a driving force for the development of the river valley. At this seminar, we seek your help and advice based on knowledge and experience. How to determine the river status before and after dam removal? River erosion? Timeline after dam removal? Evaluation of ecology and biodiversity? How to improve conditions for fish, crustaceans and pearl mussel? How to meet sceptical locals? What should/could we do before the dam removal?

National Category
Ocean and River Engineering Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-70161 (URN)
Conference
International Seminar on Dam Removal, Hudiksvall, Sweden, 24-26 September 2018
Available from: 2018-07-25 Created: 2018-07-25 Last updated: 2018-09-21Bibliographically approved
Yousefi, B., Boroomand-Nasab, S., Moazed, H. & Nordell, B. (2017). A brief review on application of solar desalination in irrigation to have a sustainable agriculture. Desalination and Water Treatment, 1-13
Open this publication in new window or tab >>A brief review on application of solar desalination in irrigation to have a sustainable agriculture
2017 (English)In: Desalination and Water Treatment, ISSN 1944-3994, E-ISSN 1944-3986, p. 1-13Article in journal (Refereed) Submitted
Abstract [en]

This review paper deals with seawater or saline water solar desalination systems for agriculture and irrigation. Since the future seems to face an increasing scarcity of irrigation water and fossil fuels, many countries encourage renewable energy driven desalination and irrigation to achieve a more sustainable agriculture. Today, however, only a fraction of existing desalination systems is solar driven. Such desalination irrigation systems deserve more attention and support. Here, we describe and discuss systems for condensation irrigation, distillation irrigation and greenhouses combined with solar stills.

Keywords
Solar Energy, Condensation Irrigation, Distillation Irrigation, Greenhouse, Solar Still
National Category
Natural Sciences Renewable Bioenergy Research Environmental Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-63749 (URN)
Available from: 2017-06-06 Created: 2017-06-06 Last updated: 2018-01-13
Scorpo, A. L., Nordell, B. & Gehlin, S. (2017). A method to estimate the hydraulic conductivity of the ground by TRT analysis (ed.). Ground Water, 55(1), 110-118
Open this publication in new window or tab >>A method to estimate the hydraulic conductivity of the ground by TRT analysis
2017 (English)In: Ground Water, ISSN 0017-467X, E-ISSN 1745-6584, Vol. 55, no 1, p. 110-118Article in journal (Refereed) Published
Abstract [en]

An accurate knowledge of aquifers properties is important 2 in many disciplines, from hydrology to site characterization in order to designing and implementing remediation strategies, as well as geothermal ground source technologies. In par5 ticular, the groundwater flow rate is a fundamental parameter to be considered in the ground-coupled heat exchangers (GCHEs) design, together with the thermal properties of the ground. In fact, even relatively low flow rate entail temperature changes considerably lower than in the case of pure heat conduction (Gehlin and Hellström, 2003; Fan et al., 2007) and then relatively stable underground temper10 atures which allow heat pumps to operate with very efficient performance coefficients, thereby reducing energy costs (Lee et al., 2012). Moreover, an accurate knowledge of groundwater velocity and ground thermal properties allows a better design and dimensioning of the GCHE, with further reduction of costs. The objective of this paper is to propose an expeditious, graphical method to estimate the groundwater flow velocity from TRT analysis.  

Place, publisher, year, edition, pages
John Wiley & Sons, 2017
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-15163 (URN)10.1111/gwat.12443 (DOI)000393955900013 ()27479510 (PubMedID)2-s2.0-84979980505 (Scopus ID)ea5adb4b-6837-4e92-bb64-900c878fe4fc (Local ID)ea5adb4b-6837-4e92-bb64-900c878fe4fc (Archive number)ea5adb4b-6837-4e92-bb64-900c878fe4fc (OAI)
Note

Validerad; 2017; Nivå 2; 2017-02-02 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-09-14Bibliographically approved
Yousefi, B., Boroomand-Nasab, S., Moazed, H. & Nordell, B. (2017). Condensation Irrigation Field Test: Measurements of Soil Moisture (ed.). International Journal of Basic Sciences & Applied Research, 6(3), 263-268
Open this publication in new window or tab >>Condensation Irrigation Field Test: Measurements of Soil Moisture
2017 (English)In: International Journal of Basic Sciences & Applied Research, ISSN 2147-3749, Vol. 6, no 3, p. 263-268Article in journal (Refereed) Published
Abstract [en]

Due to the growing population and scarcity of fresh water it is increasingly important to produce potable water by desalination of saline water. However, desalination requires energy and in a sustainable world it has to be based on renewable energy. Condensation irrigation (CI) is a method that combines desalination and irrigation. In such systems solar energy could be used to provide needed energy. By letting air flow over the water surface in a solar still with saline or polluted water, the air is humidified. The vapor-saturated airflow is then lead into buried pipes, where the air gradually cools and the water precipitates along the pipe surface. In current field study perforated PVC pipes were used i.e. the condensed water left the pipe through its walls and irrigated the surrounding soil. In PVC pipes without perforations the produced water was collected at the pipe outlet. A fan was used to force the air through the 25 m pipes of the CI system. The resulting amount of produced water per 8 hours for drinking water and irrigation was 4.0 and 6.0 l, respectively.

Place, publisher, year, edition, pages
Ankara: Academic Center for International Scientific Information, 2017
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-9148 (URN)7b7d147f-b8cd-440a-88ba-3a708950fa8b (Local ID)7b7d147f-b8cd-440a-88ba-3a708950fa8b (Archive number)7b7d147f-b8cd-440a-88ba-3a708950fa8b (OAI)
Note

Upprättat; 2016; 20160401 (bon)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-11-20Bibliographically approved
Hede, H. & Nordell, B. (2017). Crystal Plaster Double-Blind Test.
Open this publication in new window or tab >>Crystal Plaster Double-Blind Test
2017 (English)Report (Other academic)
Abstract [en]

The object of this study was to verify the pain reducing effect of the “Crystal Plaster”. This is a specific plaster made from dermatological proved material with a central circular spot of glue with fine quartz crystals embedded on the dermal side. A quantity of 93 patients with chronic pain at the vertebral column could be recruited for this study.

The pain sensation of the patients was registered as a value between zero and ten on the Visual Analogue Scale (VAS). In all phases of the study, the pain at rest was regarded separately from the pain felt in motion. No correlation of these different pain assessments was found.

  • In general patients reported relief of pain, but single persons told about one step increase of the VAS value after the Crystal Plaster application. Side effects by application and wearing the Crystal Plaster were slightly and did not exclude a use over several months.
  • After one day of application of plaster the elevated average was 70% of the pain at rest as well as in motion indicated at the beginning of the study.
  • After three month of Crystal Plaster application the VAS values communicated by the patients refer to about 50% and after doubling these times to near 40% of the average of initial pain intensity. This finding counts with only minor difference for pain at rest and in motion.
  • To gain evidence for a special contribution of the quartz crystals, Crystal Plaster were compared to similar constructed plaster with spheres of glass in the spot of glue (Placebo Plaster): A detailed examination revealed, that the Crystal Plaster have a significantly stronger pain reducing effect on non-degenerative forms of rheumatism along the backbone. In addition, the ease of pain at rest is correlated to that of pain in motion regarding the individual patient wearing Crystal Plaster for one day. The appropriate effect of the Placebo Plaster appears more randomly.
  • For the long-time application of Crystal Plaster, no data of a control plasters are available. Nevertheless, the continuous effect during six months by reducing the pain sensation by 60% of the initial value, and the clear effect reported by 55% of the users, exclude, that these findings with Crystal Plaster can be rated solely as a Placebo Effect. The degree of pain relief by Crystal Plaster is even in the range of proven pharmaceutical pain treatments.
  • A partial explanation for the pain releasing effect of Crystal Plaster is surely the role of plaster as strong mediators of self-healing mechanisms: This Placebo Effect is involved in every kind of treatment. To explain the physiology of any kind of peripheral pain control, the Gate Control Theory is discussed.

 

The pronounced effect of Crystal Plaster may be enhanced by the specific plaster design in combination with its selective placement at the neuralgic sites, which is supervised by experienced osteopaths.

         

Publisher
p. 26
Keywords
energy medicine, rheumatism, crystal plaster, pain reducing, quartz crystals, test, patients, placebo, energimedicin, reumatism, kristallplåster, kvartskristaller, test, patienter, placebo
National Category
Medical and Health Sciences Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-64767 (URN)
Available from: 2017-07-04 Created: 2017-07-04 Last updated: 2017-11-24Bibliographically approved
Knapp, S. & Nordell, B. (2017). Energy-efficient Legionella control that mimics nature and an open-sourcecomputational model to aid system design (ed.). Paper presented at Asian Symposium on Computational Heat Transfer and Fluid Flow (ASCHT), Busean, South Africa, Nov 22-25 2015. Applied Thermal Engineering, 127, 370-377
Open this publication in new window or tab >>Energy-efficient Legionella control that mimics nature and an open-sourcecomputational model to aid system design
2017 (English)In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 127, p. 370-377Article in journal (Refereed) Published
Abstract [en]

The Duck Foot Heat Exchange Model (DFHXM) was developed to aid design of energy efficient thermal pasteurization systems for water but applies to all fluids. Here, the freely available Microsoft Excel model and potential applications are described. The principle imitates countercurrent heat exchange in the feet of ducks which reduces environmental heat losses in cold climates. The designed system pasteurizes the chosen fluid by maintaining a required disinfection temperature for a given time. A heat exchanger preheats incoming fluid before reaching a heating reservoir (electric, solar, gas, etc.). Upon exiting the heater, fluid reenters the same heat exchanger to cool down, simultaneously preheating new incoming fluid. Thus, the design only requires a heater to add the necessary heat not gained in the heat exchanger and to cover environmental heat losses. The DFHXM allows users to input parameters to simulate their specific duck foot (DF) systems and obtain transient and steady-state fluid temperatures within the heat exchanger and heating reservoir. The model has the flexibility to simulate a wide variety of designs, and potential applications to Legionella control and solar-thermal water disinfection are discussed. Reported simulations agreed well with experimental results for transient and steady-state temperatures, the largest discrepancy in steady-state temperatures being 4.6 %.

Place, publisher, year, edition, pages
Elsevier, 2017
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-7772 (URN)10.1016/j.applthermaleng.2017.08.006 (DOI)000413608400036 ()2-s2.0-85027507018 (Scopus ID)63139f49-d53b-483d-bf97-5ca92b7637b1 (Local ID)63139f49-d53b-483d-bf97-5ca92b7637b1 (Archive number)63139f49-d53b-483d-bf97-5ca92b7637b1 (OAI)
Conference
Asian Symposium on Computational Heat Transfer and Fluid Flow (ASCHT), Busean, South Africa, Nov 22-25 2015
Note

Konferensartikel i tidskrift

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Amara, S., Baghdadli, T., Knapp, S. & Nordell, B. (2017). Legionella Disinfection by Solar Concentrator System (ed.). Renewable & sustainable energy reviews, 70, 786-792
Open this publication in new window or tab >>Legionella Disinfection by Solar Concentrator System
2017 (English)In: Renewable & sustainable energy reviews, ISSN 1364-0321, E-ISSN 1879-0690, Vol. 70, p. 786-792Article in journal (Refereed) Published
Abstract [en]

The current study concerns the fundamental problems of Legionnaires disease. Four decades after Legionnaires' bacteria was first identified there is still a low level of clinical awareness. Humans are infected by inhalation of aerosolized water and/or soil contaminated with the bacteria. Several control methods are available for water disinfection: biocide, ultraviolet light sterilization, copper-silver ionization, ozonation etc. but only thermal treatment can completely eliminate Legionella, which is killed almost instantly at 70 °C. The current paper describes Legionella disinfection by a solar concentrator combined with a heat recovery system that reduces the heat demand. Though this study is made for a small system (160 l of hot water per day) the system can be enlarged (more hot water and more solar collector area) and the results are thus valid also for such larger systems. Here experiments of water treatment by a solar concentrator are summarized and analyzed where the temperature exceeds 80 °C at the outlet of the heat exchanger.

Place, publisher, year, edition, pages
Elsevier, 2017
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-9715 (URN)10.1016/j.rser.2016.11.259 (DOI)000396184900059 ()2-s2.0-85007574058 (Scopus ID)8621bd47-c8d6-44d2-b6f9-a543ba86d878 (Local ID)8621bd47-c8d6-44d2-b6f9-a543ba86d878 (Archive number)8621bd47-c8d6-44d2-b6f9-a543ba86d878 (OAI)
Note

Validerad; 2017; Nivå 2; 2017-03-08 (rokbeg)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-12-14Bibliographically approved
Elhammeli, A. A., Muntasser, M. A., Lindblom, J. & Nordell, B. (2017). Producing water by condensation of humid air in buried pipe. In: Proceedings of the International Conference on Industrial Engineering and Operations Management: Rabat, Morocco, April 11-13, 2017. Paper presented at 7th Annual Conference on Industrial Engineering and Operations Management, IEOM 2017, Rabat, Morocco, 11-13 April 2017 (pp. 2270-2281). IEOM Society
Open this publication in new window or tab >>Producing water by condensation of humid air in buried pipe
2017 (English)In: Proceedings of the International Conference on Industrial Engineering and Operations Management: Rabat, Morocco, April 11-13, 2017, IEOM Society , 2017, p. 2270-2281Conference paper, Published paper (Refereed)
Abstract [en]

This study investigates the possibility of using warm humid air for irrigation and drinking water production, by flowing air over the water surface in a solar still with saline or polluted water. Vapor will be saturated during mixing with the warm air in buried pipe. Finite difference method is employed to simulate the flow of the air long the pipe. The amount of water produced and buried pipe length depends upon the flow velocity, humid air properties and buried pipe diameter. The amount of water produced is 0.02525kg/s (0.0909m3/h). The length of the buried pipe needed in this study is 77.36m for a selected air flow velocity 5m/s with the properties of 70°C, 100% relative humidity at pipe inlet, 40°C and 100% relative humidity at pipe outlet of 0.2m pipe diameter. The results agree with a previous study (Gustafsson & Lindblom, 2001) with -4.0% deviation in water production and 7% of required pipe length

Place, publisher, year, edition, pages
IEOM Society, 2017
Keywords
Water Production, Condensation, Humid Air, Underground, Desalination
National Category
Geotechnical Engineering Water Engineering
Research subject
Soil Mechanics; Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-65263 (URN)978-0-9855497-6-3 (ISBN)
Conference
7th Annual Conference on Industrial Engineering and Operations Management, IEOM 2017, Rabat, Morocco, 11-13 April 2017
Available from: 2017-08-22 Created: 2017-08-22 Last updated: 2018-06-26Bibliographically approved
Elhammeli, A. A., Muntasser, M. A., Lindblom, J. & Nordell, B. (2017). Producing water by condensation of humid air in buried pipe. In: Proceedings of the International Conference on Industrial Engineering and Operations Management: . Paper presented at 7th Annual Conference on Industrial Engineering and Operations Management, IEOM 2017, Rabat, Morocco, 11-13 April 2017 (pp. 2270-2281). IEOM Society
Open this publication in new window or tab >>Producing water by condensation of humid air in buried pipe
2017 (English)In: Proceedings of the International Conference on Industrial Engineering and Operations Management, IEOM Society , 2017, p. 2270-2281Conference paper, Published paper (Refereed)
Abstract [en]

This study investigates the possibility of using warm humid air for irrigation and drinking water production, by flowing air over the water surface in a solar still with saline or polluted water. Vapor will be saturated during mixing with the warm air in buried pipe. Finite difference method is employed to simulate the flow of the air long the pipe. The amount of water produced and buried pipe length depends upon the flow velocity, humid air properties and buried pipe diameter. The amount of water produced is 0.02525kg/s (0.0909m3/h). The length of the buried pipe needed in this study is 77.36m for a selected air flow velocity 5m/s with the properties of 70°C, 100% relative humidity at pipe inlet, 40°C and 100% relative humidity at pipe outlet of 0.2m pipe diameter. The results agree with a previous study (Gustafsson & Lindblom, 2001) with -4.0% deviation in water production and 7% of required pipe length

Place, publisher, year, edition, pages
IEOM Society, 2017
National Category
Geotechnical Engineering Water Engineering
Research subject
Soil Mechanics; Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-63568 (URN)2-s2.0-85018965473 (Scopus ID)9780985549763 (ISBN)
Conference
7th Annual Conference on Industrial Engineering and Operations Management, IEOM 2017, Rabat, Morocco, 11-13 April 2017
Available from: 2017-05-29 Created: 2017-05-29 Last updated: 2018-06-26Bibliographically approved
Amara, S., Baghdadli, T., Nordell, B. & Khimulu, R. (2017). Solar System Design for Water Treatment: Antibacterial Heat Exchanger (ABHE). In: Hassan Qudrat-Ullah, Peter Tsasis (Ed.), Innovative Healthcare Systems for the 21st Century: (pp. 167-180). Springer International Publishing
Open this publication in new window or tab >>Solar System Design for Water Treatment: Antibacterial Heat Exchanger (ABHE)
2017 (English)In: Innovative Healthcare Systems for the 21st Century / [ed] Hassan Qudrat-Ullah, Peter Tsasis, Springer International Publishing , 2017, p. 167-180Chapter in book (Refereed)
Abstract [en]

Current study concerns the fundamental problems to eliminate pathogens that are responsible for waterborne diseases. These illnesses, which have followed man throughout history, are described by occurring symptoms such as diarrhea and nausea. The various organisms identified within this document as waterborne bacterial pathogens are, e.g., Legionella (causes Pontiac fever), Salmonella (typhoid fever), and Yersinia (plague). Several control methods are available for water disinfection: biocide, ultraviolet light sterilization, copper–silver ionization, ozonation, etc., but only thermal treatment can eliminate bacterial pathogens, which are killed almost instantly at 70 °C. The current chapter describes water disinfection by a solar concentrator combined with a heat recovery system that reduces the heat demand. Though this study is made for a small system (160 l of hot water per day), the system can be enlarged (more hot water and more solar collector area), and the results are thus valid also for such larger systems. Here experiments of water treatment by a solar concentrator are summarized and analyzed where the temperature exceeds 80 °C at the outlet of the heat exchanger.

Place, publisher, year, edition, pages
Springer International Publishing, 2017
Series
Understanding Complex Systems, ISSN 1860-0832
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-63397 (URN)10.1007/978-3-319-55774-8_6 (DOI)2-s2.0-85019494412 (Scopus ID)978-3-319-55773-1 (ISBN)978-3-319-55774-8 (ISBN)
Available from: 2017-05-17 Created: 2017-05-17 Last updated: 2017-11-24Bibliographically approved
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Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-7144-9778

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