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Ronald Rovers
articles with visions, concepts and explorations about sustainability
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MNB1: 0-CO2 per 2030, MNB2: max 550 kg/m2

23 mei 2022admin
natuurhuis-strotec

Last week, two interesting reports were published analysing how regulations can better support ‘sustainable’ material use. Very esteemed colleagues, united in a Dutch ‘Gideons tribe’ to make the buildings sector move faster, have been working on this. [1] I can… Continue Reading →

biobased, building, circular, climateneutral, CO2, embodied energy, future, housing stock, indicator, tools

There is no ‘end of life’ of a building…

24 oktober 2021admin
Two Demolition cranes demolishing old row of houses in the Netherlands

Life has an end, but is there also an ‘end of life’, for products and buildings? Which is frequently used in science, like in building evaluations calculating with a maximum life span, but seems weird. It is understandable in trade,… Continue Reading →

assessment, building, eol, housing stock, materials, recycling, resources, system boundaries, tools

Embodied Energy emissions is now, not in 2050 !

8 september 2019admin
ee-graph1

This is an extended version of a previous post on linked in, which had a lot of reactions.. {april 2019}   When it comes to Embodied Energy, we are used to normalize this over the lifespan of a building (… Continue Reading →

0-energy, assessment, CO2, embodied energy, system boundaries, tools

Circular cities..? Real time material flows for London

11 februari 2019admin
dscn6285

Since it looks as if we are going to introduce the climate measures for buildings mainly via municipalities or cities, I have recovered some of my older research material about urban sustainability, developed when I worked at Wageningen University. The… Continue Reading →

architecture, building, circular, Embodied Land, materials, politics, resources, smartcities, system boundaries, tools, urban

Lowering building impact

30 oktober 2018admin
logos-tns-oneplanet-lbc

How are we going to ensure that buildings will be sustainable, that is to say, with the least impact on the environment, concerning raw materials depletion, loss of biodiversity and, above all, CO2 emissions as the most urgent effect of… Continue Reading →

assessment, building, CO2, Embodied Land, sustainable, tools

From Tetra Materia, to Trias eXergetica 2/2

22 september 2018admin
trias-exergetica3

The Tetra Materia (see previous article) approach might be useful for practice, its not the whole story. It guides direction, but does not set targets. And our system has an overall limit as well. Materials, even renewables, come exclusively from… Continue Reading →

circular, energy, exergy, materials, resources, system boundaries, tools

From Trias Energetica, to Tetra Materia. 1/2

9 september 2018admin
trias-ecologica-cover-kl4-white

The Trias Energetica is one of the generic guidelines that has a wide adoption in the Netherlands since the nineties: it states that, in order of importance: 1 reduce energy demand, 2 use renewable energy 3 use fossil fuels as… Continue Reading →

0-energy, biobased, building, embodied energy, energy, materials, tools

The kWh/m2 and the kgh/m2 1/2

27 april 2018admin
weigh-house

Strange, really, that calculating in kWh seems normal for everyone. Especially in this time, because kWh does say nothing about the origin of the energy, which can be anything, from labor, wind turbines, or coal to nuclear energy. Currently it… Continue Reading →

architecture, biobased, building, embodied energy, energy, materials, resources, sustainable, tools

Building wind turbines to dry laundry…?

15 april 2018admin
napels-waslijn

Do we really want a CO2-neutral society, or even a society with closed cycles? If yes, a lot will have to change and we will need to become extremely creative. And not directly with the input of a lot of… Continue Reading →

assessment, building, circular, CO2, Embodied Land, lca, MAXergy, resources, society, solar energy, tools

Circular part 3: “ReStore”: Circular Energy

16 juli 2017admin
ce-system2

So how could you do that, restoring minerals or metals? It happened that last week I was participating in the “Exergy, LCA & sustainability conference, ELCAS, 5th edition, originating from a EU COST project. And I presented a paper (with… Continue Reading →

assessment, circular, embodied energy, Embodied Land, energy, resources, tools

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Happy New Year 2022 !

Form Follows Fysics - reinventing the built environment (2021)
People vs Resources - restoring a world out of balance (2019)
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main focus: closing resource cycles
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  • A ‘ New Bauhaus’ ? Or Solar Decathlon ?
  • MNB1: 0-CO2 per 2030, MNB2: max 550 kg/m2
  • From EROI to EROLI: energy return on Land investment ? 2/2
  • EROI and land use of potato crop – a pilot 1/2
  • Continue partying, or (CO2) lockdown ?
  • Critical look at graphics illustrations.
  • The Bionological House
  • Carbon storage: the land-time relation 2/2
  • Carbon storage in wood-timber 1/2
  • a CO2 budget for a municipality
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  • Golf – the decadence in our use of space

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