投稿者「maelab_student」のアーカイブ

WANG JIAHE(D1)

Wang Jiahe

1st year doctor course

Nationality: Chinese

Research Theme

A genetic algorithm-based fenestration optimization method: focus on daylight use and reducing heat load

 

One of the most important reasons for the complexity of architectural design is that multiple purposes affect the overall performance of the design building. In many cases, these goals contradict each other.

Under the premise of seeking multi-objective optimization, in order to better connect the building design with the built environment design, the genetic algorithm is used to find the multi-objective optimal solution to balance the optimization of heat load and lighting environment. Change the appearance shape. Use building indicators to assess building environment early in design to guide building facade design

Specialized field

Building Environmental Engineering, Architectural Environment Design, multi-optimization

 

 

Education

September, 2019      Doctor student in MaeLab, Architecture Department, Faculty of Engineering, the University of Tokyo, Japan.

September, 2019       Master’s degree in architecture from the University of Tokyo graduate school of engineering

September, 2017        Master student in MaeLab, Architecture Department, Faculty of Engineering, the University of Tokyo, Japan.

September, 2016        Research student in MaeLab, Architecture Department, Faculty of Engineering, the University of Tokyo, Japan.

July, 2016           Bachelor of Architecture, Architecture Department, Faculty of Architecture & Urban Planing,  Shandong University of Architecture, PRC.

 

Affiliation

Architectural Institute of Japan

 

Major awards, publications, contributions, etc.

SABED DESIGN AWARD 2018  Grand Prize

Specific heat measurement of PCM

Specific heat measurement of SSPCM sheets

The specific heat values of the SSPCM sheets were measured using a thermostatic chamber, the thermocouples measured the upper and lower surfaces and internal temperatures of the SSPCM sheets, and a heat flow meter was used to determine the heat flow on the surfaces of the SSPCM sheets. The sides of the samples were covered with insulating materials, which prevented heat leakage. The measurement temperature range selected was 10.0 ℃–35.0 ℃. The inside temperature of the thermostatic chamber was changed by 1 ℃ every 30 min within the testing temperature range for cooling or heating. The stabilization period was 4 h before changing the mode of heating or cooling. The specific heat was calculated by a sum of the top and bottom heat flows of PCM while changing the temperature of a thermostatic chamber by 0.5 ℃. Each specific heat of melting and solidification was obtained by the experiment of heating and cooling.         

 

Temperature control of the thermostatic chamber

Specific heat–temperature relation of the SSPCM sheets

 

Reference

H.B. Kim, M. Mae, Y. Choi, Application of shape-stabilized phase-change material sheets as thermal energy storage to reduce heating load in Japanese climate, Build. Environ. 125 (2017) 1–14.

https://doi.org/10.1016/j.buildenv.2017.08.038

Application of shape-stabilized phase-change sheets

Application of shape-stabilized phase-change material sheets as thermal energy storage to reduce heating load

Maintaining constant thermal conditions in building interiors requires substantial energy. Using phase-change materials (PCMs) with construction materials can improve thermal performance without increasing energy expenditure. Herein, shape-stabilized PCMs (SSPCMs) were used. We measured the thermal performance of a PCM sheet and established the melting- and solidification-temperature ranges at 19–25℃. Three identical huts were examined using varying PCM levels under natural and heating conditions. In Hut A, no SSPCM sheets were applied; in Hut B, four layers of SSPCM sheets were applied to the floor; in Hut C, one layer of SSPCM was applied to the floor, walls, and ceilings. The results demonstrated that the application of SSPCM sheets improves thermal performance. For an equal number of SSPCM sheet layers applied on each side, the floor directly exposed to solar radiation showed the highest indoor temperature stabilization effect, followed by the walls and ceilings. Hence, effective PCM usage can entail large-scale application of SSPCM sheets to building surfaces. 

SSPCM sheet

Cross-section of SSPCM sheet installation

Weather conditions and indoor temperature

Indoor -temperature difference

 

Reference

H.B. Kim, M. Mae, Y. Choi, T. Kiyota, Experimental analysis of thermal performance in buildings with shape-stabilized phase change materials, Energy Build. 152 (2017) 524–533.

http://doi:10.1016/j.enbuild.2017.07.076

MEDS 2017 | Green Library

Green Library Project

A library that coexists with the climate

Project motives

After the Great East Japan Earthquake, the energy problem encountering Japan have been getting worse. Nowadays it is improper to design a building without thinking deeply about its energy consumption issues. After all, by incorporating the free ambient energy, such as daylight, heat, and airflow into the design, it is possible to establish a new relationship between architecture and the built environment, in a way that is pleasant to the building users and the society.

Studio kickoff 2017

The library is a building that welcomes all the social spectrum, from all generations. Our core aim for the design is to provide a space where various activities can coexist comfortably while preserving energy. To achieve this goal, not only passive technologies such as natural lighting should be effectively harnessed, but they should be well backed up with the appropriate active technology systems, i.e. using building equipment and artificial lighting.

The project brief is provided in this link (in Japanese) PDF➢2017前スタジオ課題文(修士)

 

Site selection

In this studio, we provided 4 locations that have tangible climatic differences for students to opt from. All the locations are true locations in US cities. The variation in the climate characteristics creates different environmental challenges, where the derived designs will be influenced by this variation creating a rich and diverse outcome. In this way, a student will observe the influence of the climate on their colleague’s designs.

A student is to select one of the following site, that eventually dictates certain climatic features. The Climate zones of America are based on ASHRAE169 classification.

Miami City, Florida ( Climate classification 1A, Very Hot Humid )

San Francisco, California ( Climate classification 3C, Warm Marine)

Seattle, Washington ( Climate classification 5B, Cool Dry)

Anchorage, Alaska City ( Climate classification 7, Very Cold)

In order to further facilitate the sense of the space, the chosen sites are for real locations, with real boundaries and surrounding contexts. the images show the San Francisco site location and context.

The proposed site in the city of San Francisco

Design Process

Following the latest trends in environmental design simulation, and joining BIM with BEM (Building Energy Modelling) tools, we structured our studio to expose students to such advanced workflows. The proposed design process is back up with supporting affiliates of Autodesk-japan. The design workflow is depicted in the image shown herewith. Students start exploring the climate characteristics and understand the climate challenges using climate consultant tool, plus the Autodesk online tool; Green Building Studio.

Design workflow and software in use

 

The second step is to appreciate the site by developing some basic shapes in FormIT 360. This enables the student to manipulate the inaugural geometries upon monitoring the solar heat gain and shading on the annual and seasonal basis. Thier main aim at this point is to tweak the building masses either to increase the solar heat gain or provide solar protection, based on the location needs.The subsequent advancement to the previous step is to investigate the energy performance of these basic geometrical compositions and how the context and climate influence the heating and cooling loads. This step is initiated when conveying the model from the FormIT to the Online Insight 360 domain.

Insight 360 online screen: Students projects in Anchorage city

 

In Insight360 students can infer so many tips to improve their design’s performance. That is, having all the students work in one place, online, that is accessible to everyone, make students learn to form each other, where they start to build the sense of the energy performance, in terms of what makes some compositions perform better than others. This open platform and transparent platform incredibly enhances the connection and arguments between students, all trying to justify the reasons behind good and poor energy performances between their designs.

One will certainly make use of the handy sensitivity analysis that informs the student of which parameter influence the energy consumption the most. For example, the online tool shows the sensitivity analysis of the WWR (Window to Wall Ratio), the glazing type and the hading elements projection in all directions, as well as the building orientation, the walls, and roof constructions and so forth. Such sensitivity analysis is easy to build, yet very informative.

Students in the tutorial session

The model history bar chart comes into play when one start exploring the various scenarios and start having many of them. Having all the scenarios in a  history record keeps students focused on the target of reducing the energy budget, and most importantly, develops the intuition of how the design elements correlate and how do they perform as one entity.

Final designs panel discussion

 

Mr R. Fujiwara’s model or the final submission

 

At the end of the day, the studio program produced excellent library projects, that have excellent energy performance, since they were primarily informed by the local site environments. Here is a model of one of these captivating projects designed by Mr. Fujiwara, Ryo and some of the selective panels for other students as well.

By Miyamori @ Miami

By Okamoto @ SF

By: WadaRyohsuke @ Seattle

By: Yamamoto @ Seattle

Studio HP: https://www.facebook.com/MEDStudio.UT/

 

Experimental equipment

We have prepared a lot of measuring instruments and experimental space for research. Here is the introduction for part of them.

 

Thermal camera

A device which makes Far-infrared visible. It has been used very frequently because it’s easy-understanding and compact.

Here is the thermal picture of the German house of parliament in summer. It’s very famous for its designer-Foster.  The temperature of upper part which filled with heat is very high. Indeed, it’s very interesting to see famous architecture through thermal camera.

 

Rooftop Experimental house

Located in the rooftop of Engineering Bldg. 1, the experimental house can change its direction freely. Now it’s mainly been used for testing of solar direct gain in winter and solar shielding in summer.

 

Let’s see a example. Here it’s a video made by Mr. Horiuchi (M2 in 2017).

Plenty of sunlight get into room through south window because of the solar elevation angle is small in winter.

PCM has been put into the internal space of floor and ceiling. It absorbs heat of sunlight in daytime and release an night to improve indoor temperature.

Sun rise from southeast, become vertical in the noon, and falls down to northwest in summer. It’s total different for solar  radiation absorption when we change the direction of experimental house towards  south and east. Please watch the movie below.

There’s nearly no sunlight in the room when direction of house is south.

 

It’s awful in evening when direction of house is west.

 

Underground artificial environment experimental room.

It’s large artificial environment experimental room which can control its temperature and humidity. Now it’s been used for experiment of shower heater and cogeneration machine to evaluate energy-saving standard of residential house.

MEDS 2016 | Design with climate

Purpose

A cafe’ is a public space that is actively connected with the city. People refuge to cafe’s to spend, mostly, relaxing moments, whereas providing comfortable environment is a design necessity. In fact, typical cafes’ not only demand pleasant internal environment, but they usually have an attached outdoor terrace, where adopting the external environment become important as well. The relaxing environment should watch for all the environmental components, i.e. the thermal environment and the wind flow, and equally important, the lit environment.

Project brief (in Japanese}

Another cultural dimension of tea ceremonies in different parts of the world, and covering three continents, Asia, Africa, and Europe. To enrich this quality, we asked our international students to share their tea ceremonies and coffee drinking habits and rituals. whereas at the same time, they could provide diverse challenges for each group, not only from a cultural point of view but also, form the various climatic challenges, in essence.Our TA (Ph.D. Students) are from  Sudan (resembling the Hot-arid climates), China and Thailand  (representing Taiwan hot and Humid climate), tougher with our remote support form Finland (as Cold climate ambassadors).

 

To proving the qualities, one should carefully understand the climatic challenge of each country and couple it with the cultural habits and the building usage profile. only deep climatic understanding,  coupled with optimized simulations could lead to a good design. Overall, in this studio 2016, we focused on the parametric design optimizations tools, namely, we focused on training the student of how to master using Ladybug and Honeybee tools (both are Grasshopper-based parametric design tools).

The utilized software

Our roadmap for mastering these tools along the exploration journey starts with understanding the climate using the Ladybug components, then moving to the light/and or energy simulations in Honeybee components. In a subsequent stage, student transfers their models to FlowDesigner, a CFD tool that enables them to form simulating the air movement and its relation with humidity ratios, and the odor/pollutant removal, if nay.The students were able to utilize these tools in a surprisingly effective way, and they came up with astonishing designs that they would like to share with their colleagues.

 

Not to forget, we have raised an intriguing question, for everyone to answer, i.e. to which degree it possible to change the experience of the cafe space via the internal and external environmental conditions?

 

Down below, we have prepared streamline photos for the design progress, enjoy it!

 

 

Since 2008 Mae have been holding the design studio for both, undergraduate and graduated (master) students, all under the environmental design topic, with the following posed challenges

Summary of the posed Challenges
1. Exploring environmental approaches from codification, tradition, and culture of the country from discussions with students and studying abroad.
2. Analyze meteorological data around the world using weather analysis tools and analyze the environmental potential of the ground.
3. Learn environmental simulations using Rhinoceros and Grasshopper and conduct form studies linked to climate.

 

For earlier studio programmes, please check the links below;

Facebook Page of Mae & Taniguchi Design Studio

Mae Studio in 2012

Mae Studio in 2011

Mae Studio in 2010

Mae Studio in 2009

ExTLA, a simple calculation tool for energy consumption of residential building (in Japanese)

ExTLA Lite, a simple Excel-based calculation tool for energy consumption of residential building

A calculation tool for a single room. Insulation, types of windows, orientation, etc. can be studied.

ExTLA Lite 1.4.1

Manual for ExTLA Lite 1.4.1 (PDF)

What’s new in 1.4 from 1.3

 

ExTLA Core, a accurate calculation tool for annual heat load

ExTLA Core

Manual for ExTLA Core (PDF)

 

* Right click on the link and save the file.

* It has been confirmed this tool work with Excel 2007 and 2010 on MS Windows, not confirmed on MacOS.

Demonstration of OM solar house

“Measurement” to investigate what is happening in real buildings in various climates is extremely important to understand the actual needs of each area. In our laboratory, we conduct surveys of real houses on a nationwide basis, as the OM project has 5 demonstration houses (see the illustration below) and the Sixth is added on 2017.

The measurements demonstration shown herewith are for the Hamamatsu model.

OM demonstration house in Hamamatsu

The photo is for the suspended floor. It is showing the hot air inlet that brings the heat collector. The photo also shows the water PET bottles that are used as a thermal mass component. The air is introduced to this are first as to store a reasonable amount of the heat for the evening period when there is no heat production. This heat storage also helps in regulating and preventing overheat during sunny days. The subsequent video is taken by a thermal camera, and it demonstrates how heat builds up and distributed throughout the day.

 

 


In order understanding the internal thermal environment, we hooked this check-like paper net Infront of the main door and used a thermal camera to record the scene. Using this basic technique, we could visually monitor how the vertical temperature distributes (Stratification) changes during the day, and how is affected by the closing the fenestrations. The provided video is for the Closed-door scenario.

 

 

続きを読む

YKK passive Town, block # 2 (2015)

Aerial View of Block № 2

Aerial View of Block № 2

At this phase of the ongoing YKK project, we provided several environmental design consultation for Block Number-2

Project Leader: Kitagata Hiroshi

The YKK passive town project is built over the old YKK company housing site in Kurobe, Toyama Prefecture. The master plan was designed by Prof. Yuichiro Kodama and block number-1. Maki’s Comprehensive Planning Office designed the second block, where Mae Lab utilized the simulation of wind environment, the light environment, and the heat load to carry out the engineering verification of major design decisions of this block. Starting from the conceptual design, Mae lab suggested and verified the use of several technical proposals that shall enhance the environmental and energy performance of the second block.

Photos for the 2nd Block (credits: YKK Co.)                                                    

Street mall

 

Common space

Common space

 

 

Sun Room

Sun Room

パッシブタウン黒部モデル第2期街区建設計画について(More information about the 2nd phase of YKK passive town)

 

PCM applied in residential house

Application of PCM to develop a comfortable and energy-saving residential house

 

Introduction

We are doing the research about the performance evaluation of phase changing materials(PCM) and find out a design method to apply it for residential house. PCM can storage the heat from sunlight in the daytime and release it at night, which makes great contribution to create a both comfortable and energy-saving indoor environment. There are many ways to use PCM for building such as putting the pack of PCM under floor or under ceiling and put PCM into small capsule then mix them with paint materials. However, the influence of those method is still not clear. Therefore, we are using the experimental house to do experiments, measurements and using computer to simulate the condition to analyze the application of PCM.

 Project

Project Leader Mr. Horiuchi

Although PCM have been used for a long time, its thermal behavior is still not clear.In order to elucidate it, we are making efforts to do experiments and measurements, then combine with the calculation of heat load. Not only maintain a suitable indoor temperature, but also improve the radiation environment, create a good light environment, develop a design method for PCM and so on. In the project, the policy of experiment is mainly decided by students, we are finding the improvement while getting many errors. I think it’s a worthwhile research theme which cannot be predicted simply.

Project Images

 

The list of related paper

「ダイレクトゲインと潜熱蓄熱を用いた太陽熱暖房住宅の設計法に関する研究」川島宏起(2012年度東京大学大学院 修士論文)

 

「日射制御と潜熱蓄熱材による住宅用ダイレクトゲイン手法の提案 (第 4報)近赤外域を反射するブラインドを用いた蓄熱部位への日射分配の検討」島田佳樹(2014年空気調和・衛生工学会大会論文)

 

「日射制御と潜熱蓄熱材による住宅用ダイレクトゲイン手法の提案 (第 5報)近赤外域を反射するブラインドの夏期における日射遮蔽効果」石綿麻矢(2014年空気調和・衛生工学会大会論文)

 

Related Link

蓄熱建材コンソーシアム https://pcmconso.jp/

Seiya Yonezawa

Seiya Yonezawa,

Mr. Seiya Yonezawa, graduated with a Master Degree in March 2015, and since then Yonezawa has been working in RUI SEKKEISHITSU Co.,Ltd.

In an interview with Mr. Sieiya, he shared his memories In Mae Lab, as he says: each student or a small group of students has their own research project, but we had a chance to collaborate, all together, in our Enemane House that won the first place in a competition held that time in 2014. It was a great success and a great experience. As students, we were able to understand by doing how to do a ZEH by practically applying the research that we did. It was a great adventure watching the project building up day by day.

 

Even more, we were able to carry out a series of measurements on the thermal environment and energy consumption after the construction. Then, we were eager to carry out a data analysis to compare the final project performance with our first simulations. In my thesis research,  my main objective is to make the best conditions to live in a house. I always discussed with the colleagues and the designers of what are the various places that need to improve in dwellings.

In my current position, despite the I belong to the design department which looks primarily at making the educational and dining spaces, I am still exploring the methods of achieving comfortable environment. Besides,  I am now used to explore architecture using my thermal camera and a thermometer, the habit that I learned in Mae-lab.

EneMane competition #1

 

 

 

Katsuya Obara

Katsuya Obara,

Mr. Katsuya Obara, graduated with a Master degree in April 2014.

Mr. Obara has been working in the Arup Hong Kong Building Sustainability Group of ARUP Hong Kong from 2014.
He is working in a department that is concerned with the sustainable architectural design, from simulation to environmental certification such as LEED.

 

Mr. Obara believes that there were three points major skills that he developed and learned in Mae lab that enabled him to work in such renowned international firm as ARUP, as he listed:

 

 

1- Participating in overseas academic gatherings and workshops: makes me realize the importance of having a broad perspective in knowing different approaches and exchanging opinions. And I also realized the importance of languages.

2- Comprehensive experience in simulation and measurement: there are many simulation to run when it comes to professional practice. consduting extenisve simulations enabled be to image how the climatic inputs are processed inside the simulation and how it will trnasfer to affects the people living there. Simulation is really helpful for interpreting the inviroentm and inform the design creation.

3- Development and operation of thermal load calculation software (named ExTLA): I was able to have deep understanding of heat load calculation and strongly realize the importance of programming.  This skill of software developemnt adn deep underrstanduing of the phyics behind it contniued to attrackt my interested even after graduation, it has greatly contributed to make me participate in the internal web application development and automation of simulation in my current company.

 

 

 

 

 

 

 

遠藤 健一郎(M1)

遠藤 健一郎

修士課程1年

 

経歴

平成29年4月 前研究室 修士課程入学

 

出身地

兵庫県

 

出身高校

洛南高等学校

 

私が本研究室で取り組んでいるテーマは、気象データ実測やシミュレーション技術といった建築環境工学技術を、建築設計の初期の段階から導入し、設計プロセスの各段階においてデザイナーとエンジニアが双方向的に意見を交わしながらより環境的に高性能な建物を実現できるような設計手法の確立です。その為に、シミュレーションツールをその原理まで含めて深く理解するための学習や、世界の優れた環境建築や評価基準、設計ツールの事例に関するケーススタディなどを行っています。

 

受賞歴

2017年3月 東京大学工学部建築学科卒業論文 伊東忠太賞受賞

劉行(M1)

劉行(リュウ コウ)

修士課程1年

出身地:中国遼寧省

研究テーマ

空気式太陽能集熱システム、 OMソーラーハウス

 

経歴

2011年9月 湖南建築大学 建築学部 学士課程入学

2017年4月 前研究室 研究生入学

2017年9月 前研究室 修士課程入学

LIU HANG (M1)

LIU HANG

Master student 1st year

Nationality:Chinese

Research Theme

Air-typed solar collecting system, OM solar house

Education

September, 2017        Master student in MaeLab, Architecture Department, Faculty of Engineering, the University of Tokyo, Japan.

Apirl, 2017        Research student in MaeLab, Architecture Department, Faculty of Engineering, the University of Tokyo, Japan.

July, 2016           Bachelor of Architecture, Architecture Department, Faculty of Architecture ,  Hunan University.