Christina Hopfe 🇺🇦

458 posts

Christina Hopfe 🇺🇦 banner
Christina Hopfe 🇺🇦

Christina Hopfe 🇺🇦

@CHopfe

Professor in building physics @TUGraz; I care about environmental issues, resilience, equality and diversity; co-author of #PassivhausDesignersManual

Graz, Austria Katılım Haziran 2011
516 Takip Edilen670 Takipçiler
Christina Hopfe 🇺🇦
Christina Hopfe 🇺🇦@CHopfe·
@moog77 This is a complete misinterpretation...and lack of understanding of the confounding factors. Perfect correlation would mean that every absence would be down to sars cov 2. Which it will never be because kids are absent for several reasons.
English
1
0
0
20
chris iddon
chris iddon@moog77·
The study does show that CO2 levels correlate with external temp. Such that when it is hotter outside the CO2 is generally lower. Similar findings have been observed before - in hotter weather ppl more likely to open windows to increase ventilation 5/n
chris iddon tweet media
English
3
1
6
364
chris iddon
chris iddon@moog77·
A new report on Austrian schools which measured classroom ventilation across 1200 classes in 120 schools found no correlation with absenteeism. more details below (although authors claim a moderate linear correlation as the r=0.521; where r=1 is perfect correlation ) 1/n
chris iddon tweet media
English
1
4
10
983
Christina Hopfe 🇺🇦
Christina Hopfe 🇺🇦@CHopfe·
@moog77 This is based on a numerical model by the @maxplanckpress institute. Of course, this is based on (validated) assumptions and on an infected person in the room. What is important here is not the absolute risk but the relative risk from one room to the other.
English
0
0
1
40
chris iddon
chris iddon@moog77·
@CHopfe In a 30 person UK classroom, if it were ventilated at 300l/s there would be a 60% infection risk of SARS-CoV-2? Even at the height of the pandemic I don't recall there being such high infection rates, and often they aren't ventilated at 10lsp. Seems unlikely to me
chris iddon tweet media
English
1
1
2
93
Christina Hopfe 🇺🇦 retweetledi
LET'S AIR
LET'S AIR@nousaerons·
1,200 classrooms in Austria were monitored to analyze their indoor air quality. As in many countries, 75% of the classrooms have poor air renewal. The study conducted by @tugraz represents a huge amount of work, we strongly recommend reading the report tugraz.at/en/tu-graz/ser…
LET'S AIR tweet media
English
0
47
103
3.1K
Christina Hopfe 🇺🇦
Christina Hopfe 🇺🇦@CHopfe·
Thriller to announce that @PassivhausPlus and I have been awarded one of three Prizes for Excellence in Teaching out of a pool of over 4000 modules- massive thanks to all our students @IBPSC_tugraz @IBPSA #klimaaktiv #Passivhaus
TU Graz@tugraz

🏅 TU Graz honours six lecturers for outstanding achievements. In recognition of their high level of commitment, outstanding didactic concepts and special motivation, the winners will receive the 2023/2024 Prize for Excellence in Teaching. Congratulations! 👍 The award winners and their courses in 2023/2024: 👏 Christina Johanna Hopfe and 👏 Robert Scot McLeod (Lecture with integrated exercise: “Low carbon building design and communities”) 👏 Mario Hirz (Lecture: “Embedded Mechatronics Architectures”) 👏 Christoph Aistleitner, 👏 Lorenz Frühwirth and 👏 Athanasios Sourmelidis (Lecture with integrated exercise: “Analysis 1 for computer science studies”) More about the winners and their courses: tugraz.at/en/tu-graz/ser… Image source: Lunghammer - TU Graz

English
1
4
11
580
Christina Hopfe 🇺🇦 retweetledi
Australian Academy of Science
Australian Academy of Science@Science_Academy·
The average Australian spends about 90% of their time indoors. While indoor air quality is considered a serious risk to public health worldwide, many countries—including Australia—do not have indoor air quality standards.   ...
English
42
281
611
103.5K
Christina Hopfe 🇺🇦
Christina Hopfe 🇺🇦@CHopfe·
@robertofner @igoe_at Vielen Dank für den Hinweis. Wir wissen bereits darüber Bescheid und sind im Prozess eine kleine Anzahl der Sensoren zu rekalibrieren, inkl. diesen.
Deutsch
0
0
8
225
Robert Ofner 🌞
Robert Ofner 🌞@robertofner·
Gestern Abend in einer Volksschulklasse habe ich diesen Wert am CO2 Messgerät gesehen. Meiner Meinung nach ist das nicht plausibel bei 420ppm global. Wie kann das sein @igoe_at ?
Robert Ofner 🌞 tweet media
Deutsch
6
0
18
3.8K
Christina Hopfe 🇺🇦 retweetledi
Initiative Gesundes Österreich
Initiative Gesundes Österreich@igoe_at·
Genau diese Erkenntnis ist so wichtig! #SaubereLuft ist nicht selbstverständlich und ohne dauerndes Tun auch nicht vorhanden!
Christina Hopfe 🇺🇦@CHopfe

Nice to receive some positive feedback... School director in one of our 120 #impAQS project schools thanked us saying she wasn't "aware how fast air quality can worsen in classrooms and how important regular ventilation is" @tugraz #ibpsc @igoe_at #BMBWF @PassivhausPlus

Deutsch
0
1
11
390

Keşfet

@moog77 @maxplanckpress @tugraz @SZ @FAZ_NET @guardian @BBC @BBCWorld