use I don't agree with the practice of using site EUI as a metric to evaluate the thermodynamic performance, environmental impact, or monetary value of a building. I disagree with this practice for the same reason that there are no "totalThermalLoad" and "thermalLoadBalance" for simulations run with full HVAC. I can summarize these reasons in the following way:
When we run a simulation with ideal air loads, the heating/cooling values we get are THERMAL ENERGY that is directly added to or removed from the zone. In this way, we can draw a rough parallel between these two types of energy since they are are generally of a similar type and quality. As such, I am ok with adding them together to get total thermal load or subtracting them to get a sense of thermal load balance.
However, when we run a simulation will full HVAC, the heating/cooling values that we get are usually HEATING FUEL ENERGY and ELECTRICITY respectively. Fuel energy and electricity are fundamentally two different types and qualities of energy. To cite the second law of thermodynamics, the exergy (or the capacity to do work) of electricity is much greater than that of fuel. This is evident in the fact that, to produce a given unit of electricity, I often have to burn at least 3 units of fuel energy (though this can be much more for inefficient plants). With each step in a power plant - making steam, turning a turbine, turning a generator - there are significant energy losses. This difference in exergy is also evident in the fact that there are so many more things that I can do directly with a unit of electricity than I can do with the same unit of fuel energy. I can use electricity to directly refrigerate, produce light energy or power a motor just as easily as I can use to to cook, produce hot water, or heat a space. While I can cook, make hot water, or heat a space directly with fuel energy, refrigeration and lighting are much more difficult. For this reason, I do not feel comfortable adding electricity and fuel together either in the totalThermalLoad output or in a site EUI metric.
Still, the use of site EUI has become so ingrained in the industry that I have to acknowledge it and at least show users how it's calculated. In my view, it's an ad-hoc metric that was invented to deal with previously limited amount of information on energy sources.
Instead of using site EUI, I would recommend using the following metrics depending on what you are trying to evaluate:
Utility Cost / Square Meter - to measure the monetary value of a building to an owner or user
Kg CO2 / Square Meter - to measure the environmental and climatic impact of a building
Emergy / Square Meter - to measure the overall thermodynamic performance of a building
The first two are actually fairly easy to calculate these days just by researching your site's utility rates or grid energy mixture and multiplying the building electricity or fuel by their respective rates. I will add in some capabilities to Honeybee soon to make it even easier for you to get these values from your EPW file and databases of utility rates/grid mixture. Emergy is much harder to calculate as you have to trace all your energy sources all of the way back to the sun but there are a number of experts at work to make this calculation possible (probably in the next few years, we may have much easier ways to calculate it).
Hope this helps explain the current setup.
-Chris…
he example file to this file so you can give it a try with any version of Honeybee that you're already using. The only requirement is to have OpenStudio installed as the component is using OpenStudio libraries to parse gbXML files. If you're using the latest version available on github the component is also available under WIP tab.
Why?
The main purpose of developing this component is to save time and effort for importing Revit models for energy and daylight analysis. It bothers me to see a lot of smart people spend a lot of time to just come up with solutions just to get the geometry from Revit to Honeybee for analysis. This component is not solving all the issue but is a first step forward. In an ideal world, the future version of Honeybee, which works both under DynamoBIM and Grasshopper should address this issue but that can take some time to be fully ready!
How?
To use this component you need to Export your Revit model as gbXML and then use the file path to load the file into Grasshopper. There are several resources available online on how to prepare the analytical model in Revit and export the gbXML file. Here is an image for importing the Revit 2017 sample model using the default settings. As you can see the model will be just as good as what your original gbXML file from Revit is.
What can be improved?
Well, there are several items that can be improved and they are mostly not on us. To get it started I add what I think are the 3 main shortcomings and my thoughts on how they can be addressed in the future. Feel free to add what you think needs to be added to this list in the comments section.
1. Revit analytical models and as the results gbXML files, by design, are not intended to be clean. Watch this presentation from the Autodesk University to see the logic behind this approach which in short is it doesn't matter for a large scale early stage energy model. Well, This will be quite a problem for studies that you can do with Honeybee. Included but not limited to daylight and comfort analysis.
The best solution that I can think of, until Autodesk fixes their exporter, is to use Revit Rooms and Spaces and generate a clean model from the scratch. We have already tried this approach in Revit but since the Revit API doesn't provide access to Room openings we had a very hard time to get it to work.
That's why that I opened an idea on Revit ideas to get over this issue. With your support we already have 81 votes, but it hasn't been enough to make them to consider the idea for an official review. If you haven't voted already and you think this will be a helpful feature take a moment and vote so we can have it implemented at some point in the future.
2. There is no way (that I know) to export only part of the model. The way export gbXML is set up in Revit is to export the whole model once together. As a result, if you have a huge model with 100 rooms and you want to get one of the rooms into Honeybee using this component you have to export the whole model, which can take some time, and then import them all back into Grasshopper. To partially address this issue I added an input to the component that allows you input a list of names for rooms that you're interested to be loaded into Grasshopper. You can use the name of the room/space in Revit as an input for the component.
3. The component doesn't import adjacencies, loads, schedules and HVAC systems. I wasn't able to export a gbXML file from Revit with any of this data except for the adjacency, but even if you can do that, the component currently can only import geometries and constructions. I hope we get access to 1 and so we don't have to use the xml file approach at all, but if that takes a very long time then we will add these features to the component.
Happy 2017!
Mostapha…
ne – power of the many è un corso advanced level che studia la produzione di effetti complessi a partire dalla modellazione di comportamenti semplici su un insieme strutturato con un numero alto di elementi. Attraverso un approccio generico e scaleless sarà possibile affrontare la tematica generale su più fronti e in una molteplicità di declinazioni possibili. Il corso è rivolto a chi,indipendentemente dal proprio background (urbanistica, architettura, ingegneria, design, arte o altro) già possiede una esperienza di base con Rhinoceros e Grasshopper, e desidera sviluppare aspetti di gestione avanzata del flusso di articolato di informazioni attraverso una strategia guidata basata su esempi pratici e sull’implementazione di un progetto personale sul tema generale del “field behaviour”. Sarà trattato anche l’utilizzo di alcuni plug-ins quali gHowl e WeaverBird. Il numero dei partecipanti è fissato a un massimo di 20 per offrire un tutoraggio proficuo ed una effettiva esperienza di learning ad ogni iscritto.
[.] Temi:
teoria
. complessità, emergence, effetti di campo (field behaviour), sensibilità, efficienza multiperformance
tecnica
. dati:gestione e manipolazione avanzata del data tree, streaming e visualizzazione; transizione, blending e modulazione delle geometrie; generazione e controllo multiperformance di popolazioni di componenti; attrattori, drivers e tecniche di modulazione avanzate; uso delle mesh con WeaverBird; ottimizzazione con Galapagos
[.] Dettagli :
Tutors: Alessio Erioli + Andrea Graziano – Co-de-iT
Si richiede esperienza di base nella modellazione in Rhino (equivalente a Rhino training Level 1, il Level 2 è gradito – la documentazione per il training è disponibile gratuitamente all’indirizzo: http://download.rhino3d.com/download.asp?id=Rhino4Training&language=it) e nell’uso di Grasshopper (la suddivisione di una superficie NURBS in componenti tramite isotrim è data come base assodata)
. luogo:
IreCoop – via Vasco De Gama 27 _ Firenze
. durata:
25-27 febbraio 2010 – 3 giornate consecutive _ orario 9:00 – 18:00
. costo:
professionisti – 450.00 € studenti – 280.00 €
. note:
scadenza iscrizioni: 20 febbraio 2010 il corso sarà attivato con un numero minimo di 15 iscritti al termine sarà rilasciato un attestato di frequenza gli iscritti dovrano venire muniti dei propri laptop con software installato. una versione free per 30 giorni è disponibile sul sito www.rhino3d.com
. contatti:
iscrizioni + info alloggi: www.irecooptoscana.it (Cosa offriamo > formazione > altri corsi)
info sul corso: info@co-de-it.com…
giornata inaugurale sarà dedicata alla free-lecture introduttiva finalizzata alla realizzazione di un modello d'architettura complesso attraverso l'utilizzo di comandi e tecniche avanzate di rappresentazione con Grasshopper (plug-in parametrica di Rhinoceros) e 3dsMax. Sarà illustrato inoltre il potenziale di V-ray per 3dsMax realizzando un rendering concettuale. Durante il mini-corso dell' openDAY verranno mostrate le caratteristiche e le potenzialità degli strumenti per far luce sui nuovi valori assunti dalla modellazione 3D. La modellazione 3D sta interessando un pubblico sempre più vasto inserendosi in una nuova fase di ampia disponibilità per conoscenze, software, hardware di prototipazione e modelli. Pur mantenendo tutti i suoi valori già noti la questione si è talmente ampliata fino ad interessare norme giuridiche (diritti sui modelli ,concorrenza con offerte di servizi apparentemente simili, informazioni deformate e onfusione nei media) Makers University[http://www.makersuniversity.com], in collaborazione con parametricart, vi propone un punto di vista ampio e sintetico su queste tematiche.
Al termine della free-lecture, sarà illustrata l'offerta formativa [CLICCA QUI] di parametricart riferita ai corsi che si terranno nei mesi di Gennaio e Febbraio 2013 inseriti all'interno della più ampia programmazione della Makers University. SONO PREVISTE TARIFFE PROMOZIONALI PER COLORO CHE SI ISCRIVERANNO AI CORSI durante l'OpenDAY.
La lezione e la presentazione si terranno nel nuovo spazio co-working il PEDONE.
PROGRAMMAZIONE
- I temi della Makers University [Leo Sorge];
- Modellazione della parametricTower (concept di architettura complessa) utilizzando Grasshopper, applicativo per la modellazione parametrica [VIDEO] [Michele Calvano];
- Modellazione di una copertura reticolare 3D a completamento della parametricTower con 3dsMax utilizzando tecniche di modellazione mesh complesse [Wissam Wahbeh];
- Rendering con V-ray per 3dsMax illustrando la nuova interfaccia nodale [Wissam Wahbeh].
- Question Time per chiarimenti sugli argomenti illustrati.
COME
L'openDAY sarà aperto a tutti gli interessati,completamente gratuito e sarà replicato in tre sessioni di uguali contenuti organizzate nei seguenti orari:
Sessione [1] 11,30 - 13,30
Sessione [2] 15,30 - 17,30
Sessione [3] 17,30 - 19,30
Per necessità di organizzazione è importante la prenotazione all'evento utilizzando il form in fondo alla pagina specificando nella stringa apposita, il nome dell'evento e la sessione (es. open day sessione 1) oltre agli altri dati richiesti.…
la corretta comprensione del software che di livello specialistico per un confronto diretto con alcuni aspetti fondamentali dell’ architettura e del design.
Attraverso l'utilizzo di Grasshopper rivoluzionaria plug-in di Rhinoceros, si insegneranno nuove tecniche di modellazione parametrica.
Grasshopper, permette di esprimere al massimo le qualità e le potenzialità della modellazione Nurbs abbandonando in parte l'interfaccia classica di Rhinoceros. Quest'ultimo infatti viene sostituito da un menù a tendine dove vengono collezionati nodi utili alla composizione di algoritmi risolutivi.
La plug-in Grasshopper, dimostra come il linguaggio del computer stia diventando un reale strumento progettuale.
Il corso si svolgerà nei seguenti giorni: Sabato 26 Ottobre dalle ore 10.00 alle ore 19.00 Domenica 27 Ottobre dalle ore 10.00 alle ore 19.00 Scadenza preiscrizione per Grasshopper: 23/10
Contenuti
Nella prima parte del corso attraverso degli esercizi base si insegneranno i metodi di esplicitazione degli algoritmi generativi. In queste ore di lezione si illustreranno, attraverso fasi operative, i seguenti argomenti:
Suddivisione degli algoritmi in parametri e componenti;
Tipologie di dati comptiili con Grasshopper e loro combinazione creando definizioni minime;
Funzioni matematiche e logiche;
Data flow, liste e filtri di esclusione;
Costruzione di curve e superfici e loro trasformazione;
Nella seconda parte del corso lo strumento viene specializzato affrontando editing e trasformazioni complesse sulle superfici:
Elaborazione delle superfici di suddivisione;
Tassellazione spaziale di superfici a doppia curvatura;
Gestione di parametri variabili per la progettazione di definizioni finalizzate al controllo del movimento;
Ideazione di algoritmi per il passaggio dal modello digitale al modello reale attraverso la tecnica dello sliceing;
Alla fine del corso, verrà rilasciato l’attestato di partecipazione ad un corso di Rhinoceros qualificato certificato dalla casa sviluppatrice McNeel, valido anche per la richiesta di crediti formativi universitari.
Tutor del corso
Il corso sarà tenuto da un docente qualificato, esperto in disegno e rappresentazione dell' architettura e del design:
Michele Calvano| _architetto, dottore di ricerca in rappresentazione architettonica specializzato nella modellazione matematica (Nurbs) e modellazione parametrica.
Docente ART (Autorized Rhino Trainer)
Info
Responsabile didattico e docente del corso: arch. Michele Calvano cell: 340 3476330
Info mail: parametricart@gmail.com
…
y anyway ;))
Since 2014 i begun to get back into the construction biz for some dozen main reasons, one of them being the highly increased availability of this kind of software "power", and robotics.
first project ended by 1stQ 2015 was focused on the development of a parametric block for construction. (almost sure the first parametric product designed in Uruguay, and probably one of the few first of this kind globally...)
Far from being a complicated model. In fact the standard model is extremely simple, key thing is that is fully parametric...
dimensions, materials, textures, colors... and so on
second key thing is that the main common component of the blocks (an EPS core) is robotically machined...
the blocks are the base of a construction system (oriented mainly - though not restricted only - to residential buildings) that
- is based on digital models, tendentially to be used in parametric models of buidings
- lab tested to prove to be 1.5 times as compression resistant than traditional bricks and blocks. (autoportability up to two stories buildings)
- has recently proved (due to size) to be 300% more efficient than the classic and 200% more efficient than steel frame in (our country official figures)
check it out here
--
https://drive.google.com/file/d/0B1TRxxgF_sEnQnZrTkZGbUx3cmM/view
--
- and it's aimed to be mass produced and handled by robots...
this project ended on 1H 2016
and i filed 4 patents in the process.
3 of them of mechanical devices designed as extensions for a cnc machine i own
and the fourth (
the patent related specifically with the blocks ) included a dozen of innovations (believe me...i have almost 15 yrs in the biz, and are coool stuff...)
along the project I've been working with inventor, even knowing in advance it will lack the kind of features I wanted to program many things... (lisp, VB, etc.... all same species of -prehistoric - animals) to leverage the tool to the sky - and far beyond... -
but was an alternative valid by that time because it allows the implementation of some form of parametric models, had a local representative and some supposedly skilled guys in the neibourhood....
but life is hard... and none of the latter two rendered me any significant help
so I had to take the tour myself...
- mind i never regret to do things that others cant -
and finish what i start
this one was a great project for many figures... and ended with more results than the ones commited to accomplish...
... some more history here ....
then because of a customer who brought a ZHA project ! to quote..., I crossed with rhino, and then met GH again to notice to my great joy and pleasure, in what kind of animal it had developed...
since money talks I'm investing hard on getting up to the expectations, and beyond as i usually do...
and thats how we met..
2017-2018 it's the time frame to build two robots. first one is a prototype to handle the k-nano blocks in the production process, delivery AND at the construction site ( a "smart crane" we nicknamed...)
the other one is the first prototype of robot to assist in the fabrication (smart blocker we called it to be creative ! ;))
then by 2018-2019 i'll be making a "kinda contour crafter" machine to complete the pie :) (you'll be interested on this..)
i guess you already know what all this has to do with GH...
i already have all the components i can imagine to do almost all i ever wanted to do in relation to this set of projects
but in almost a single tool !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
i can design, animate, render, optimize, simulate and even robotic simulate..
so, i have to ask...
is there a chance you might be interested in helping us in some projects we are starting on march and june 2017 (8 and no more than 18 months of duration respectively) ?
sent you a friend request, for the case you might be interested to continue by e-mail...
in any case many thanks for your help and inspiration !
best regards !
long happy marriage, and large figures bank account !
…
This blog post is a rough approximation of the lecture I gave at the AAG10 conference in Vienna on September 21st 2010. Naturally it will be quite a different experience as the medium is quite…
Added by David Rutten at 3:27pm on September 24, 2010
t. So here we go!
1. Honeybee is brown and not yellow [stupid!]...
As you probably remember Honeybee logo was initially yellow because of my ignorance about Honeybees. With the help of our Honeybee expert, Michalina, now the color is corrected. I promised her to update everyone about this. Below are photos of her working on the honeybee logo and the results of her study.
If you think I'm exaggerating by calling her a honeybee expert you better watch this video:
Thank you Michalina for the great work! :). I corrected the colors. No yellow anymore. The only yellow arrows represent sun rays and not the honeybee!
2. Yellow or brown, W[here]TH Honeybee is?
I know. It has been a long time after I posted the initial video and it is not fun at all to wait for a long time. Here is the good news. If you are following the Facebook page you probably now that the Daylighting components are almost ready.
Couple of friends from Grasshopper community and RADIANCE community has been helping me with testing/debugging the components. I still think/hope to release the daylighting components at some point in January before Ladybug gets one year old.
There have been multiple changes. I finally feel that the current version of Honeybee is simple enough for non-expert users to start running initial studies and flexible enough for advanced users to run advanced studies. I will post a video soon and walk you through different components.
I think I still need more time to modify the energy simulation components so they are not going to be part of the next release. Unfortunately, there are so many ways to set up and run a wrong energy simulation and I really don’t want to add one new GIGO app to the world of simulation. We already have enough of that. Moreover I’m still not quite happy with the workflow. Please bear with me for few more months and then we can all celebrate!
I recently tested the idea of connecting Grasshopper to OpenStudio by using OpenStudio API successfully. If nothing else, I really want to release the EnergyPlus components so I can concentrate on Grasshopper > OpenStudio development which I personally think is the best approach.
3. What about wind analysis?
I have been asked multiple times that if Ladybug will have a component for wind study. The short answer is YES! I have been working with EFRI-PULSE project during the last year to develop a free and open source web-based CFD simulation platform for outdoor analysis.
We had a very good progress so far and our rockstar Stefan recently presented the results of the work at the American Physical Society’s 66th annual DFD meeting and the results looks pretty convincing in comparison to measured data. Here is an image from the presentation. All the credits go to Stefan Gracik and EFRI-PULSE project.
The project will go live at some point next year and after that I will release the Butterfly which will let you prepare the model for the CFD simulation and send it to EFRI-PULSE project. I haven’t tried to run the simulations locally yet but I’m considering that as a further development. Here is how the component and the logo looks like right now.
4. Teaching resources
It has been almost 11 months from the first public release of Ladybug. I know that I didn't do a good job in providing enough tutorials/teaching materials and I know that I won’t be able to put something comprehensive together soon.
Fortunately, ladybug has been flying in multiple schools during the last year. Several design, engineering and consultant firms are using it and it has been thought in several workshops. As I checked with multiple of you, almost everyone told me that they will be happy to share their teaching materials; hence I started the teaching resources page. Please share your materials on the page. They can be in any format and any language. Thanks in advance!
I hope you enjoyed/are enjoying/will enjoy the longest night of the year. Happy Yalda!
Cheers,
-Mostapha
…