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Ronald Rovers
articles with visions, concepts and explorations about sustainability
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circular

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

A New Year, New chances…: ‘Homo Vermis’

28 december 2019admin
img_20190623_233026314

It is now exactly 10 years ago around Christmas that I struggled with the interpretation of ‘cycles’. Why I wondered, is everyone convinced there are two resource cycles, as promoted nowadays in whats called the circular economy? And why would… Continue Reading →

blog, circular, cycles, Embodied Land, history, MAXergy, research, society

A 0-marginal resource society does not exist

21 juni 2019admin
1260-car-718781-mass-production

Rifkin some time ago wrote about the 0-marginal cost society. The book had a lot of attention. But cost is a complete different measuring unit as energy or greenhouse gasses. A 0-marginal cost society is not the same as a… Continue Reading →

0-energy, circular, economy, exergy, labor, materials, resources, society, transition

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

Every agriculture hectare requires 7,7 ha input…. Embodied Land

26 januari 2019admin
pexels-free-harvest-grain-combine-arable-farming-163752

Before going into agriculture, and the available figures for it, I will briefly summarize how evaluate keeping resource loops closed. Fot this a calculation method has been developed, called MAXergy, with Embodied Land as a measuring unit. To close resource… Continue Reading →

assessment, circular, ecology, Embodied Land, exergy, MAXergy, resources, sustainable

The end of the ‘road’…

6 oktober 2018admin
snelweg-file-5-baans-strook

The national organization for road works in the Netherlands, RWS, has a slogan: from A to Better. It has not brought us much so far: The roads are widened, more traffic lanes , so now we are not in a… Continue Reading →

circular, energy, resources, smartcities, society, transport

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

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

A Circular road…. ?

1 april 2018admin
highway-looping

( picture: borrowed  from: Agent Bob) … Well, then, what is a circular road? was a question that was asked , after the previous article. To answer, lets first analyze what happens when constructing a highway with current approach. Then… Continue Reading →

assessment, circular, Embodied Land, materials, resources, system boundaries

‘Circular building’ , now what is it really ?

9 maart 2018admin
cattedrale-vegetale-tree-cathedral-giuliano-mauri-thumb640

(master-classes on this topic and others, see on the right) ” What is Circular Building really?” , a Dutch journalist twittered, being confused about the debates going on. Its not clear yet, apparently, so lets give it a try. The… Continue Reading →

aluminium, architects, architecture, biobased, building, circular, future, materials, recycling, resources

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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
  • Environment and climate checklist for journalists
  • Change, back then and now
  • the creating-debtors-theory of money…
  • The future country of the Netherlands
  • Golf – the decadence in our use of space

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