The past week I could participate in COP22 during Buildings Day, with a presentation on the consequences of the Paris agreement for the buildings and the building sector. We have a maximum budget of 800 GT CO2 that can be emitted before the 2 degree threshold is passed, and what should the building sector do as fair share ( Around 40 % of CO2 emissions is built environment related) .
A few months ago I started to explore this issue and asked two colleagues from Germany and Switzerland to join, this study: Guillaume Habert from ETH Zurich and Thomas Luetzkendorf from KIT Karlsruhe. We intend to publish the final results of this study next months , under the umbrella of iiSBE, and invite other academic colleagues to make a same exploration form different angles. The seminar in which I presented was organized by Iresen, the Moroccan renewable energy research centre. They have a brand new huge research facility just outside Marrakesh. They intend to complement this with a large green building research center the next years ( and organize the first African Solar decathlon). Morocco is really serious about renewable energy and climate change, and has shown major steps forward past years.
The report will be announced here later this year as well.
In een recent project is bovenstaande driedeling in ambities ontwikkeld en uitgewerkt. Vanwege de nodige vragen hierover, is er een korte toelichting geschreven.
toelichting e-k-s neutraal – circulair bouwen okt 2016 rorovers
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At the National Dutch congress “Sustainable built” , a award will be given to housing corporation with the most creative approach regarding climate change. As member of the jury I was asked to give a a impression of the implications of climatechange ambitions. It has been published as a column on the conference website (in Dutch) :
The congress and award ceremony is 16 November.
Just published : our research into the optimal balanced materials package for 0-energy building retrofiit, ZEB . As previous exploring research already showed regarding renovation for row house: better insulate less and add some more PV panels. (B in left graph) . In other words, passivehouse is not the optimal choice from materials perspective in case of 0-energy and beyond. The operational energy in all cases is not relevant since all cases are ZEB: its the materials input that determines the most optimal solution, since that is the fossil energy based impact remaining for a ZEB. This paper shows the results for row houses and detached houses, both calculated for 4 alternative packages.
Ritzen,M., Haagen T., Rovers R., Vroon Z., Geurts C., Environmental impact evaluation of energy saving and energy generation: Case study for two Dutch dwelling types Building and Environment, Volume 108, 1 November 2016, Pages 73–84 http://dx.doi.org/10.1016/j.buildenv.2016.07.020
for some backround on the MAXergy methodology , visit www.maxergy.org
for some background on the new situation for building evaluations after eliminating operational energy impact, see Rovers R., Zero-Energy and beyond: a paradigm Shift in assessment, Buildings, 5 (1) (2014), p. 1-13 http://www.mdpi.com/2075-5309/5/1/1/html