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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Engineering and Technology 39 7709 7436 51 47 141 6001

Kai Sirén publications per year

The chart shows the history of publications by Kai Sirén between 1963 and 2023, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kai Sirén published across 61 years, from 1963 to 2023, averaging 2.5 papers a year. Output peaked at 17 publications in 2014. 1 of the 150 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1963 to 2023. Vertical axis: number of publications, 0 to 17. Peak 17 publications in 2014. 1963: 1 publication 1964: 0 publications 1965: 0 publications 1966: 0 publications 1967: 0 publications 1968: 0 publications 1969: 0 publications 1970: 0 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 1 publication 1987: 1 publication 1988: 1 publication 1989: 1 publication 1990: 0 publications 1991: 0 publications 1992: 0 publications 1993: 1 publication 1994: 3 publications 1995: 2 publications 1996: 1 publication 1997: 7 publications 1998: 5 publications 1999: 4 publications 2000: 9 publications 2001: 1 publication 2002: 3 publications 2003: 5 publications 2004: 1 publication 2005: 0 publications 2006: 1 publication 2007: 5 publications 2008: 1 publication 2009: 5 publications 2010: 5 publications 2011: 5 publications 2012: 4 publications 2013: 8 publications 2014: 17 publications 2015: 9 publications 2016: 14 publications 2017: 11 publications 2018: 10 publications 2019: 4 publications 2020: 3 publications 2021: 0 publications 2022: 0 publications 2023: 1 publication
1963 2023

150 publications in total across all disciplines

View publications per year as a table
Kai Sirén: publications per year, 1963 to 2023
Year Publications
1963 1
1964 0
1965 0
1966 0
1967 0
1968 0
1969 0
1970 0
1971 0
1972 0
1973 0
1974 0
1975 0
1976 0
1977 0
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 0
1986 1
1987 1
1988 1
1989 1
1990 0
1991 0
1992 0
1993 1
1994 3
1995 2
1996 1
1997 7
1998 5
1999 4
2000 9
2001 1
2002 3
2003 5
2004 1
2005 0
2006 1
2007 5
2008 1
2009 5
2010 5
2011 5
2012 4
2013 8
2014 17
2015 9
2016 14
2017 11
2018 10
2019 4
2020 3
2021 0
2022 0
2023 1
Total 150
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Kai Sirén publication distribution in Engineering and Technology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Engineering and Technology in 2026. The highlighted bar marks where Kai Sirén sits on this spectrum.

No. of scientists
100 200 300 400
Bar chart with 78 bars. Horizontal axis: publications, 38–47 to 804+. Vertical axis: number of scientists, 0 to 457. Most scientists, 457, have 148–157 publications. The last bar groups every scientist with 804 publications or more. The highlighted bar, 138–147 publications, is where this scientist sits. 38–47 publications: 20 scientists 48–57 publications: 35 scientists 58–67 publications: 96 scientists 68–77 publications: 135 scientists 78–87 publications: 190 scientists 88–97 publications: 259 scientists 98–107 publications: 283 scientists 108–117 publications: 369 scientists 118–127 publications: 341 scientists 128–137 publications: 386 scientists 138–147 publications: 372 scientists 148–157 publications: 457 scientists 158–167 publications: 415 scientists 168–177 publications: 407 scientists 178–187 publications: 421 scientists 188–197 publications: 378 scientists 198–207 publications: 403 scientists 208–217 publications: 317 scientists 218–227 publications: 346 scientists 228–237 publications: 321 scientists 238–247 publications: 260 scientists 248–257 publications: 280 scientists 258–267 publications: 240 scientists 268–277 publications: 214 scientists 278–287 publications: 242 scientists 288–297 publications: 203 scientists 298–307 publications: 166 scientists 308–317 publications: 154 scientists 318–327 publications: 175 scientists 328–337 publications: 159 scientists 338–347 publications: 99 scientists 348–357 publications: 131 scientists 358–367 publications: 106 scientists 368–377 publications: 118 scientists 378–387 publications: 97 scientists 388–397 publications: 108 scientists 398–407 publications: 82 scientists 408–417 publications: 71 scientists 418–427 publications: 64 scientists 428–437 publications: 55 scientists 438–447 publications: 54 scientists 448–457 publications: 60 scientists 458–467 publications: 47 scientists 468–477 publications: 40 scientists 478–487 publications: 30 scientists 488–497 publications: 29 scientists 498–507 publications: 38 scientists 508–517 publications: 40 scientists 518–527 publications: 32 scientists 528–537 publications: 23 scientists 538–547 publications: 28 scientists 548–557 publications: 23 scientists 558–567 publications: 19 scientists 568–577 publications: 16 scientists 578–587 publications: 17 scientists 588–597 publications: 18 scientists 598–607 publications: 22 scientists 608–617 publications: 15 scientists 618–627 publications: 9 scientists 628–637 publications: 11 scientists 638–647 publications: 21 scientists 648–657 publications: 12 scientists 658–667 publications: 9 scientists 668–677 publications: 11 scientists 678–687 publications: 9 scientists 688–697 publications: 6 scientists 698–707 publications: 14 scientists 708–717 publications: 7 scientists 718–727 publications: 8 scientists 728–737 publications: 10 scientists 738–747 publications: 9 scientists 748–757 publications: 5 scientists 758–767 publications: 5 scientists 768–777 publications: 11 scientists 778–787 publications: 7 scientists 788–797 publications: 2 scientists 798–803 publications: 4 scientists 804+ publications: 100 scientists
38–47 publications 804+

This scientist: 141 publications — 23rd percentile

23% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 804 publications or more.

View publications distribution as a table
Number of Engineering and Technology scientists by publication count, Research.com 2026 ranking edition. Based on 9,796 ranked scientists.
Publications Scientists This scientist
38–47 20
48–57 35
58–67 96
68–77 135
78–87 190
88–97 259
98–107 283
108–117 369
118–127 341
128–137 386
138–147 372 141
148–157 457
158–167 415
168–177 407
178–187 421
188–197 378
198–207 403
208–217 317
218–227 346
228–237 321
238–247 260
248–257 280
258–267 240
268–277 214
278–287 242
288–297 203
298–307 166
308–317 154
318–327 175
328–337 159
338–347 99
348–357 131
358–367 106
368–377 118
378–387 97
388–397 108
398–407 82
408–417 71
418–427 64
428–437 55
438–447 54
448–457 60
458–467 47
468–477 40
478–487 30
488–497 29
498–507 38
508–517 40
518–527 32
528–537 23
538–547 28
548–557 23
558–567 19
568–577 16
578–587 17
588–597 18
598–607 22
608–617 15
618–627 9
628–637 11
638–647 21
648–657 12
658–667 9
668–677 11
678–687 9
688–697 6
698–707 14
708–717 7
718–727 8
728–737 10
738–747 9
748–757 5
758–767 5
768–777 11
778–787 7
788–797 2
798–803 4
804+ 100
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Kai Sirén D-index placement in Engineering and Technology in 2026

The chart shows the D-index (discipline H-index) distribution of Engineering and Technology scientists ranked by Research.com in 2026. The highlighted bar marks where Kai Sirén sits on this spectrum.

No. of scientists
100 200 300 400
Bar chart with 78 bars. Horizontal axis: D-Index, 30 to 107+. Vertical axis: number of scientists, 0 to 426. Most scientists, 426, have 42 D-Index. The last bar groups every scientist with 107 D-Index or more. The highlighted bar, 39 D-Index, is where this scientist sits. 30 D-Index: 59 scientists 31 D-Index: 114 scientists 32 D-Index: 129 scientists 33 D-Index: 189 scientists 34 D-Index: 200 scientists 35 D-Index: 262 scientists 36 D-Index: 311 scientists 37 D-Index: 312 scientists 38 D-Index: 350 scientists 39 D-Index: 385 scientists 40 D-Index: 348 scientists 41 D-Index: 362 scientists 42 D-Index: 426 scientists 43 D-Index: 380 scientists 44 D-Index: 310 scientists 45 D-Index: 341 scientists 46 D-Index: 301 scientists 47 D-Index: 306 scientists 48 D-Index: 271 scientists 49 D-Index: 246 scientists 50 D-Index: 210 scientists 51 D-Index: 253 scientists 52 D-Index: 213 scientists 53 D-Index: 221 scientists 54 D-Index: 195 scientists 55 D-Index: 186 scientists 56 D-Index: 170 scientists 57 D-Index: 167 scientists 58 D-Index: 166 scientists 59 D-Index: 144 scientists 60 D-Index: 152 scientists 61 D-Index: 141 scientists 62 D-Index: 138 scientists 63 D-Index: 131 scientists 64 D-Index: 118 scientists 65 D-Index: 114 scientists 66 D-Index: 119 scientists 67 D-Index: 95 scientists 68 D-Index: 87 scientists 69 D-Index: 77 scientists 70 D-Index: 89 scientists 71 D-Index: 69 scientists 72 D-Index: 54 scientists 73 D-Index: 46 scientists 74 D-Index: 55 scientists 75 D-Index: 54 scientists 76 D-Index: 49 scientists 77 D-Index: 53 scientists 78 D-Index: 46 scientists 79 D-Index: 28 scientists 80 D-Index: 39 scientists 81 D-Index: 36 scientists 82 D-Index: 24 scientists 83 D-Index: 26 scientists 84 D-Index: 36 scientists 85 D-Index: 18 scientists 86 D-Index: 25 scientists 87 D-Index: 19 scientists 88 D-Index: 26 scientists 89 D-Index: 27 scientists 90 D-Index: 23 scientists 91 D-Index: 15 scientists 92 D-Index: 12 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 13 scientists 97 D-Index: 13 scientists 98 D-Index: 9 scientists 99 D-Index: 7 scientists 100 D-Index: 7 scientists 101 D-Index: 8 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 9 scientists 105 D-Index: 6 scientists 106 D-Index: 9 scientists 107+ D-Index: 99 scientists
30 D-Index 107+

This scientist: 39 D-Index — 24th percentile

24% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 107 D-Index or more.

View D-Index distribution as a table
Number of Engineering and Technology scientists by D-index, Research.com 2026 ranking edition. Based on 9,796 ranked scientists.
D-Index Scientists This scientist
30 59
31 114
32 129
33 189
34 200
35 262
36 311
37 312
38 350
39 385 39
40 348
41 362
42 426
43 380
44 310
45 341
46 301
47 306
48 271
49 246
50 210
51 253
52 213
53 221
54 195
55 186
56 170
57 167
58 166
59 144
60 152
61 141
62 138
63 131
64 118
65 114
66 119
67 95
68 87
69 77
70 89
71 69
72 54
73 46
74 55
75 54
76 49
77 53
78 46
79 28
80 39
81 36
82 24
83 26
84 36
85 18
86 25
87 19
88 26
89 27
90 23
91 15
92 12
93 9
94 15
95 10
96 13
97 13
98 9
99 7
100 7
101 8
102 7
103 7
104 9
105 6
106 9
107+ 99
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Overview

Kai Sirén is affiliated with Aalto University in Finland and primarily works within the field of Engineering. Their research engages with multiple subfields such as Pulmonary and Respiratory Medicine, Building and Construction, Health, Toxicology and Mutagenesis, General Dentistry, and Renewable Energy, Sustainability and the Environment.

Their recent publications cover a range of topics linking energy systems, ventilation, and infection control. Notable papers include:

  • EU Emission Targets of 2050: Costs and CO2 Emissions Comparison of Three Different Solar and Heat Pump-Based Community-Level District Heating Systems in Nordic Conditions, 2020, published in Energies
  • Methods for infection prevention in the built environment-a mini-review, 2023, published in Frontiers in Built Environment
  • Dynamic performance of displacement ventilation in a lecture hall, 2020, published in International Journal of Ventilation
  • Cost optimal and net zero energy office buildings solutions using small scale biomass-based cogeneration technologies, 2023, published by Libera Università di Bolzano

Across their work, the main topics explored involve:

  • Infection Control and Ventilation
  • Building Energy and Comfort Optimization
  • Indoor Air Quality and Microbial Exposure
  • Dental Research and COVID-19
  • Geothermal Energy Systems and Applications
  • Integrated Energy Systems Optimization
  • Wind and Air Flow Studies

Frequent co-authors collaborating with Kai Sirén include:

  • Kalle Salonen
  • Juha Jokisalo
  • Risto Kosonen
  • Merja Ahonen
  • Riika Mäkinen

Their research has been published in venues such as Frontiers in Built Environment, Energies, International Journal of Ventilation, and Libera Università di Bolzano. These publication venues reflect the interdisciplinary nature of Sirén's work spanning environmental engineering, ventilation, and energy systems.

Best Publications

  • A review of the performance of different ventilation and airflow distribution systems in buildings

    Guangyu Cao;Hazim B. Awbi;Runming Yao;Yunqing Fan

  • A multi-stage optimization method for cost-optimal and nearly-zero-energy building solutions in line with the EPBD-recast 2010

    Mohamed Hamdy;Ala Hasan;Kai Siren

  • Applying a multi-objective optimization approach for Design of low-emission cost-effective dwellings

    Mohamed Hamdy;Ala Hasan;Kai Siren

  • Minimisation of life cycle cost of a detached house using combined simulation and optimisation

    Ala Hasan;Mika Vuolle;Kai Sirén

  • Fulfillment of net-zero energy building (NZEB) with four metrics in a single family house with different heating alternatives

    Ayman Mohamed;Ala Hasan;Kai Sirén

  • Cost-optimal thermal energy storage system for a residential building with heat pump heating and demand response control

    Behrang Alimohammadisagvand;Juha Jokisalo;Simo Kilpeläinen;Mubbashir Ali

  • On-site energy matching indices for buildings with energy conversion, storage and hybrid grid connections

    Sunliang Cao;Ala Hasan;Kai Sirén

  • Impact of simulation time-resolution on the matching of PV production and household electric demand

    Sunliang Cao;Kai Sirén

  • Analytical model for melting in a semi-infinite PCM storage with an internal fin

    Piia Lamberg;Kai Sirén

  • Theoretical and computational analysis of closed wet cooling towers and its applications in cooling of buildings

    Ala Hasan;Kai Sirén

  • Approximate analytical model for solidification in a finite PCM storage with internal fins

    Piia Lamberg;Kai Sirén

  • Performance investigation of plain circular and oval tube evaporatively cooled heat exchangers

    Ala Hasan;Kai Sirén

  • Performance investigation of plain and finned tube evaporatively cooled heat exchangers

    Ala Hasan;Kai Sirén

  • Techno-economic assessment and optimization of Stirling engine micro-cogeneration systems in residential buildings

    Kari Alanne;Niklas Söderholm;Kai Sirén;Ian Beausoleil-Morrison

  • A genetic algorithm for optimization of building envelope and HVAC system parameters

    Matti Palonen;Ala Hasan;Kai Sirén

  • Combining the Demand Response of direct electric space heating and partial thermal storage using LP optimization

    Mubbashir Ali;Juha Jokisalo;Kai Siren;Matti Lehtonen

  • Renovation alternatives to improve energy performance of historic rural houses in the Baltic Sea region

    Üllar Alev;Lari Eskola;Endrik Arumägi;Endrik Arumägi;Juha Jokisalo

  • Influence of location and design on the performance of a solar district heating system equipped with borehole seasonal storage

    Ciarán Flynn;Kai Sirén

  • Impact of adaptive thermal comfort criteria on building energy use and cooling equipment size using a multi-objective optimization scheme

    Mohamed Hamdy;Ala Hasan;Kai Siren

  • Techno-economic optimization and analysis of a high latitude solar district heating system with seasonal storage, considering different community sizes

    Janne Hirvonen;Hassam ur Rehman;Kai Sirén

  • Models of human thermoregulation and the prediction of local and overall thermal sensations

    Ehab Foda;Issa Almesri;Hazim B. Awbi;Kai Sirén

Frequent Co-Authors

Matti Lehtonen
Matti Lehtonen Aalto University
Hazim B. Awbi
Hazim B. Awbi University of Reading
Armando C. Oliveira
Armando C. Oliveira University of Porto
Amir Safdarian
Amir Safdarian Sharif University of Technology
Ian Beausoleil-Morrison
Ian Beausoleil-Morrison Carleton University
Runming Yao
Runming Yao University of Reading
Shady Attia
Shady Attia University of Liège

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