Research output per year
Research output per year
- 1 - 50 out of 57 results
Search results
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2024
Integration of thermal energy storage for sustainable energy hubs in the forest industry : A comprehensive analysis of cost, thermodynamic efficiency, and availability
Talebjedi, B., Laukkanen, T. & Holmberg, H., 15 Sept 2024, In: Heliyon. 10, 17, e36519.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile2 Citations (Scopus)37 Downloads (Pure) -
2023
Advanced design and operation of Energy Hub for forest industry using reliability assessment
Talebjedi, B., Laukkanen, T., Holmberg, H. & Syri, S., 25 Jul 2023, In: Applied Thermal Engineering. 230, Part A, 17 p., 120751.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile3 Citations (Scopus)68 Downloads (Pure) -
2022
Advanced energy-saving optimization strategy in thermo-mechanical pulping by machine learning approach
Talebjedi, B., Laukkanen, T., Holmberg, H., Vakkilainen, E. & Syri, S., 3 Sept 2022, In: Nordic Pulp & Paper Research Journal. 37, 3, p. 434-452 19 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile10 Citations (Scopus)176 Downloads (Pure) -
2021
Energy Efficiency Analysis of the Refining Unit in Thermo-Mechanical Pulp Mill
Talebjedi, B., Laukkanen, T., Holmberg, H., Vakkilainen, E. & Syri, S., 17 Mar 2021, In: Energies. 14, 6, 18 p., 1664.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile10 Citations (Scopus)230 Downloads (Pure) -
Energy simulation and variable analysis of refining process in thermo-mechanical pulp mill using machine learning approach
Talebjedi, B., Laukkanen, T., Holmberg, H., LUT, E. & Syri, S., 2 Jan 2021, In: MATHEMATICAL AND COMPUTER MODELLING OF DYNAMICAL SYSTEMS. 27, 1, p. 562-585 24 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile9 Citations (Scopus)89 Downloads (Pure) -
2020
Economic Evaluation of Drying of Soot Sludge and Sawdust Mixture at Low Temperatures Using the Characteristic Drying Curve Method
Myllymaa, T., Holmberg, H. & Ahtila, P., Mar 2020, In: ChemEngineering. 4, 1, p. 1-17 17 p., 6.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile3 Citations (Scopus)99 Downloads (Pure) -
Energy modeling of a refiner in thermo-mechanical pulping process using ANFIS method
Talebjedi, B., Khosravi, A., Laukkanen, T., Holmberg, H., Vakkilainen, E. & Syri, S., 1 Oct 2020, In: Energies. 13, 19, 26 p., 5113.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile11 Citations (Scopus)162 Downloads (Pure) -
2019
District heat network as a short-term energy storage
Kouhia, M., Laukkanen, T., Holmberg, H. & Ahtila, P., 15 Jun 2019, In: Energy (the International Journal). 177, June, p. 293-303 11 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile32 Citations (Scopus)163 Downloads (Pure) -
Energy analysis of algae-to-biofuel production chains integrated with a combined heat and power plant
Kouhia, M., Holmberg, H., Sonck, M. & Ahtila, P., 4 Jul 2019, In: International Journal of Sustainable Engineering. 12, 4, p. 281-290 11 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile3 Citations (Scopus)162 Downloads (Pure) -
Evaluation of design objectives in district heating system design
Kouhia, M., Laukkanen, T., Holmberg, H. & Ahtila, P., 15 Jan 2019, In: Energy. 167, p. 369-378 10 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile11 Citations (Scopus)176 Downloads (Pure) -
Exergetic performance analysis of heat pumps: two alternative approaches
Holmberg, H. & Laukkanen, T., 2019, In: International Journal of Exergy. 30, 2, p. 182-199Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile176 Downloads (Pure) -
International Seminar on 'Towards Sustainable Tomorrows: From Sound Concepts To Sound Practice' - 31st October-1st November 2019 - Abstract Book and Introduction to SAS Network
Özdenkci, K. (Editor), E. Moula, M. M. (Editor), Laukkanen, T. (Editor), Paloposki, T. (Editor), Paatero, J. V. (Editor), Holmberg, H. (Editor) & Lahdelma, R. (Editor), Oct 2019, Aalto University. 48 p. (Aalto University publication series CROSSOVER; vol. 2019, no. 7)Research output: Book/Report › Anthology › Professional
Open Access -
2018
Techno-economic evaluation of biomass drying in moving beds: The effect of drying kinetics on drying costs
Myllymaa, T., Holmberg, H. & Ahtila, P., 11 Sept 2018, In: Drying Technology . p. 1-14 14 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile14 Citations (Scopus)123 Downloads (Pure) -
2017
Can bacterial biofiltration be replaced by autotrophic organisms in recirculating fresh water aquaculture?
Ojanen, S., Tyystjärvi, E., Holmberg, H., Kouhia, M. & Ahtila, P., Aug 2017, In: Aquaculture International. 25, 4, p. 1427-1440 14 p.Research output: Contribution to journal › Article › Scientific › peer-review
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2015
Comparison of Indirect CO2-emissions of Different Renewable Transport Fuels
Holmberg, H., Siitonen, S., Laukkanen, T., Tuomaala, M. & Niskanen, T., 2015, In: Energy Procedia. 72, p. 19-26Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile7 Citations (Scopus)179 Downloads (Pure) -
Economic Analysis of Soot Sludge Drying at Low Temperatures at a Combined Heat and Power Plant
Myllymaa, T., Holmberg, H., Laukkanen, T. & Ahtila, P., 2015, First Nordic Baltic Drying Conference, Gdansk, Poland, June 17-19, 2015. Goncharova-Alves, S. & Alves-Filho, O. (eds.). Trondheim: Norwegian University of Science and Technology (NTNU)Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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Energy analysis of algae-to-biofuel production chains integrated with a combined heat and power plant
Kouhia, M., Holmberg, H., Sonck, M. & Ahtila, P., 2015, 23rd European Biomass Conference & Exhibition, Algae Event 2015, Vienna, 2nd June 2015. ETA FlorenceResearch output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific
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Microalgae-utilizing biorefinery concept for pulp and paper industry: Converting secondary streams into value-added products
Kouhia, M., Holmberg, H. & Ahtila, P., 2015, In: Algal Research. 10, p. 41-47Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile24 Citations (Scopus)229 Downloads (Pure) -
Porous membrane as a means of gas and nutrient exchange in a tubular photobioreactor
Ojanen, S., Tyystjärvi, E., Holmberg, H. & Ahtila, P., 2015, In: Journal of Applied Phycology. 27, 3, p. 1169-1175Research output: Contribution to journal › Article › Scientific › peer-review
9 Citations (Scopus) -
Upgrading of soot sludge from waste to fuel by means of low temperature drying in fixed beds
Myllymaa, T., Holmberg, H., Arhippainen, P. & Ahtila, P., 2015, In: Fuel Processing Technology. 138, p. 509-519Research output: Contribution to journal › Article › Scientific › peer-review
2 Citations (Scopus) -
Wood Chip Drying in Fixed Beds: Drying Kinetics and Economics of Drying at a Municipal Combined Heat and Power Plant Site
Myllymaa, T., Holmberg, H., Hillamo, H., Laajalehto, T. & Ahtila, P., 2015, In: Drying Technology. 33, 2, p. 205-215Research output: Contribution to journal › Article › Scientific › peer-review
15 Citations (Scopus) -
2014
Minimization of total drying costs for a continuous packed-bed biomass dryer operating at an integrated chemical pulp and paper mill
Holmberg, H., Isaksson, J. & Lahdelma, R., Dec 2014, In: Biomass and Bioenergy. 71, p. 431-442 12 p.Research output: Contribution to journal › Article › Scientific › peer-review
4 Citations (Scopus) -
The thermal analysis of a combined heat and power plant undergoing Clausius-Rankine cycle based on the theory of effective heat-absorbing and heat-emitting temperatures
Holmberg, H. & Ahtila, P., 2014, In: Applied Thermal Engineering. 70, 1, p. 977-987Research output: Contribution to journal › Article › Scientific › peer-review
5 Citations (Scopus) -
Wood chip drying in connection with combined heat and power or solar energy in Finland
Rinne, S., Holmberg, H., Myllymaa, T., Kontu, K. & Syri, S., 2014, E2C 2013 - 3rd European Energy Conference. Sarkadi, L., Kroó, N., Armaroli, N., Ongena, J., McEvoy, A. & Fülöp, Z. (eds.). EDP Sciences, p. 1-9 03008. (EPJ Web of Conferences ; vol. 79).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
Open AccessFile8 Citations (Scopus)278 Downloads (Pure) -
2013
An Experimental Study on Drying of Forest Residues in a Packed-bed Dryer
Holmberg, H., Järvinen, T., Hillamo, H. & Ahtila, P., 2013, 6th Nordic Drying Conference, Copenhagen, Denmark June 5-7, 2013. Goncharova-Alves, S., Alves-Filho, O. & Eikevik, T. M. (eds.). Copenhagen; Trondheim: Norwegian University of Science and Technology (NTNU), p. 000-000Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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ENERGY EFFICIENCY IN BIOREFINERIES - A CASE STUDY OF FISCHER-TROPSCH DIESEL PRODUCTION IN CONNECTION WITH A PULP AND PAPER MILL
Haikonen, T., Tuomaala, M., Holmberg, H. & Ahtila, P., 2013, In: Pulp and Paper: Canada. 114, 2, p. 23-27Research output: Contribution to journal › Article › Scientific › peer-review
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EVALUATING MUNICIPAL ENERGY EFFICIENCY IN BIOREFINERY INTEGRATION
Haikonen, T., Tuomaala, M., Holmberg, H. & Ahtila, P., 2013, In: Energy. 63, p. 260-267Research output: Contribution to journal › Article › Scientific › peer-review
5 Citations (Scopus) -
MICROALGAL BIOREFINERIES USING ANAEROBIC DIGESTION AND CLOSED PHOTOBIOREACTORS: FINNISH STRATEGIES
Suominen, K. E. H., Ojanen, S., Hillamo, H., Holmberg, H. & Ahtila, P., 2013, ICCE (International Conference on Clean Energy), Ottawa, Canada. 9-11th September 2013. Aminian, H. (ed.). Canada: International Conference and Exhibition on Clean Energy (ICCE), p. 119-130Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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Theoretical Potential to Convert Excess Heat into Mechanical Work in the Finnish Industry
Järvinen, T., Holmberg, H. & Ahtila, P., 2013, Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES '13, Rhodes, Greece, 29.9-2.10.2013. Pierucci, S. & Klemeš, J. (eds.). Associazione Italiana Di Ingegneria Chimica, p. 253-258Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
2 Citations (Scopus) -
2012
Experiences with new veneer drying method
Paajanen, O., Holmberg, H., Lahti, P. & Kairi, M., 2012, In: International Wood Products Journal. 3, 1, p. 26-30Research output: Contribution to journal › Article › Scientific
3 Citations (Scopus) -
2011
Allocation of fuel costs and CO2-emissions to heat and power in an industrial CHP plant: Case integrated pulp and paper mil
Holmberg, H., Tuomaala, M., Haikonen, T. & Ahtila, P., 2011, In: Applied Energy. 93, xx, p. 614-623Research output: Contribution to journal › Article › Scientific › peer-review
39 Citations (Scopus) -
Allocation of Fuel Costs to Heat and Power in an Integrated Production of Pulp, Paper and Biodiesel
Holmberg, H., Tuomaala, M., Haikonen, T. & Ahtila, P., 2011, Paperweek Canada, Montreal, 1-3.2.2011. Montreal, Kanada: Pulp and Paper Technical Association of Canada (PAPTAC)Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific
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An experimental study on drying of bark-sludge mixture in a fixed bed at low temperature
Holmberg, H., Ahtila, O. & Ahtila, P., 2011, The 5th Nordic Drying Conference Held in Espoo, Finland on June 20-21, 2011. Eikevik, T. M., Odilio, A.-F. & Concharova-Alves, S. (eds.). Norge: Norwegian University of Science and Technology (NTNU)Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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Energy Efficiency in Biorefineries - A Case Study FT Diesel Production in Connection with P&P Mill
Haikonen, T., Tuomaala, M., Holmberg, H. & Ahtila, P., 2011, Paperweek Canada, Montreal, 1-3.2.2011. Montreal, Kanada: Pulp and Paper Technical Association of Canada (PAPTAC), p. 144-147Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific
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Energy efficiency in biorefineries - A case study of Fisher-Tropsch diesel production in connection with a pulp and paper mill
Haikonen, T., Tuomaala, M., Holmberg, H. & Ahtila, P., 2011, In: JOURNAL OF SCIENCE AND TECHNOLOGY FOR FOREST PRODUCTS AND PROCESSES. 1, 3, p. 71-75Research output: Contribution to journal › Article › Scientific › peer-review
4 Citations (Scopus) -
Experiences with a new veneer drying method
Paajanen, O., Holmberg, H., Lahti, P. & Kairi, M., 2011, International Panel Products Symposium 2011. Llandudno, Wales, U.K. 5-6 October 2011. Spear, M. (ed.). Bangor University, p. 217Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
3 Citations (Scopus) -
Experimental study on drying of bark in fixed beds
Holmberg, H., Ahtila, O. & Ahtila, P., 2011, In: Drying Technology. 29, 8, p. 953-960Research output: Contribution to journal › Article › Scientific › peer-review
13 Citations (Scopus) -
2010
Application of the effective heat absorbing and emitting temperature to determining power losses of industrial processes
Holmberg, H., Ruohonen, P. & Federley, J., 2010, 23rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy System, Lausanne, Sveitsi 14 june-17.2010. Lausanne SveitsiResearch output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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Estimating the value of energy saving in industry by different cost allocation methods
Siitonen, S. & Holmberg, H., 2010, In: International Journal of Energy Research. 36, 3, p. 324-334Research output: Contribution to journal › Article › Scientific › peer-review
12 Citations (Scopus) -
Introducing a new method of veneer drying
Holmberg, H., Lahti, P. & Paajanen, O., 2010, 11th International IUFRO Wood Drying Conference, Recent Advances in the Field of Wood Drying, Skellefteå, Sweden, January, 18 - 22, 2010.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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Papermaking, Part 2, Drying Book 9
Holmberg, H., Tuomaala, M. & Ahtila, P., 2010, Paperi ja Puu Oy.Research output: Book/Report › Book › Scientific › peer-review
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2009
An experimental study on drying times in a contact drying of veneer
Holmberg, H., Lahti, P., Paajanen, O. & Ahtila, P., 2009, 8th World Conferess of Chemical Engineering August 23-27.2009, Montreal, Quebec, Canada. Montreal Canada: Ecole Polytechnique de MontrealResearch output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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Determination of the Real Loss of Power for a Condensing and a Backpressure Turbine by Means of Second Law Analysis
Holmberg, H., Ruohonen, P. & Ahtila, P., 2009, In: Entropy. 11, p. 702-712Research output: Contribution to journal › Article › Scientific › peer-review
30 Citations (Scopus) -
Determination of the real power loss for a steam turbine
Holmberg, H., Ruohonen, P. & Ahtila, P., 2009, Pres 09, Rooma, 10. -13.5.2009. Klemes, J. (ed.). Milano, Italy: AIDIC Servizi Srl, p. 379-390Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
1 Citation (Scopus) -
Enthalpy of formation as part of energy efficiency analyses case: olefin plant
Tuomaala, M., Holmberg, H., Auvinen, H. & Ahtila, P., 2009, PRES'09, Rooma, 10.-13.5.2009. Klemes, J. (ed.). Milano, Italy: AIDIC Servizi Srl, p. 543-Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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Valuating Heat Conservation in Industry by Cost Allocation
Siitonen, S., Holmberg, H. & Ahtila, P., 2009, Global Conference on Global Warming 2009 (GCGW-09), July 5-9. 2009, Grand Cevahir Hotel, Istanbul, Turkey. Istanbul, TurkeyResearch output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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2008
Evaluation of energy efficiency in direct steam and air drying systems
Holmberg, H. & Ahtila, P., 2008, Pres 2008, Praha, 24-28.8.2008. Klemes Jiri, S. P. (ed.). Praha: Czech Society of Chemical Engineering, p. 1317-1318Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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2007
Energy Efficiency in biorefinerier - A Case Study of FT Diesel Production in Connection with P&P Mill
Haikonen, T., Holmberg, H. & Ahtila, P., 2007, The 6th Biennial Johan Gullichsen Colloquium, Dipoli Espoo 15.11.2007. Espoo: Finnish Paper Engineers' Association, p. 93-103Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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2006
Simulation Model for the Model-Based Control of a Biofuel Dryer at an Industrial Combined Heat and Power Plant
Holmberg, H. & Ahtila, P., 2006, In: Drying Technology. 24, 12, p. 1547-1557Research output: Contribution to journal › Article › Scientific › peer-review
5 Citations (Scopus) -
2005
A New method to evaluate integrated process design - case biomass drying using a plant´s available heat sources
Tuomaala, M., Holmberg, H., Ahtila, P. & Hurme, M., 2005, 3rd Nordic Drying Conference, June 15-17, 2005 Karlstad, Sweden.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review