INSIGHTS

2022.11.10

MEP Engineering designers talk. Environment and equipment idea notes Vol. 01

Even skyscrapers are ZEB Ready

(Tentative name) Uchikanda 1-chome Project

MEP Engineering designers talk. Environment and Equipment Idea Note TOP

Is ZEB difficult in a super high-rise building?

ZEBは一般的に建物規模が大きくなればなるほど、達成は難しいとされています。建物が大きく、そして高くなればなるほど、空調の熱搬送動力のエネルギー消費量や必要な設備も増えることなどが要因です。しかし延床面積10,000㎡以上の建築物は、国内の年間の新築物件の着工数に占める割合が棟数ベースで１％程度しかないものの、建築物のエネルギー消費量ベースでは36％程度と大きな割合を占めることから、都市全体で消費エネルギーを削減していくためにこの規模の建築物に対してZEB化の推進を図ることが求められています。
「（仮称）内神田一丁目計画」（2025年11月末に竣工・開業予定）は、地下3 階、地上26 階、高さ約130m、延床面積約85,200㎡の超高層ビルでありながら、事務所用途の部分評価で、建築物省エネルギー性能表示制度（BELS）の最高ランクの5★と、「ZEB Ready」の認証を2022年9月22日付で取得しました。

ZEB initiatives can be realized even in super-high rise buildings

This building has a natural lighting plan with the main facade facing north to reduce solar radiation load, and a passive Architectural Design that strengthens the building's envelope performance through the use of low-E double-glazing and high-insulation materials has been implemented to reduce the energy load of the entire building. In addition, as active technologies, advanced environmental technologies have been introduced, such as the use of highly efficient heat sources through district heating and cooling, the adoption of highly efficient equipment such as total heat exchangers, and the improvement of energy efficiency through daylight utilization control. By optimally combining these architectural and equipment initiatives, we have realized a ZEB-Ready skyscraper with extremely high environmental performance, with energy consumption in the office area reduced by 51% based on energy conservation calculations, despite being a skyscraper.

Energy conservation = A combination of Architectural Design and equipment optimization

When we hear about ZEB and energy conservation, we tend to think that it is something that MEP Engineering work hard on, but in reality, to achieve ZEB, it is not only about equipment, but also about architectural planning, in that it is essential to design a passive building that suppresses loads. Also, it is not necessarily true that a building will become ZEB just because it introduces a lot of special advanced technologies. I think that the key to achieving ZEB is to first carefully review the conditions and assumptions in the design to see if there is any waste, optimize the equipment capacity, and then work to increase efficiency. Of course, each building has its own given conditions and characteristics, and I don't think that ZEB can be achieved just by using the same design method every time, but this building has proven that it is not impossible to achieve ZEB standards even in a skyscraper by carefully accumulating these basic efforts and reviews.

Environmentally friendly building initiatives
BELS Certificate
  1. A ZEB is a building that aims to achieve a zero energy balance by significantly reducing the amount of energy it consumes annually and by generating energy.
  2. ZEB Roadmap Follow-up Committee "Directions for future considerations to further promote the spread of ZEB" April 26, 2021
  3. ZEB Ready refers to a ZEB that is compliant with the standard primary energy consumption reduction of 50% or more, excluding renewable energy.

Designer's Voice

Designer

Electrical MEP Engineering Department / Joined in 2006

Yuya Nakano

Yuya Nakano

To achieve ZEB, we adopted highly efficient office lighting and strove to significantly reduce lighting energy by controlling dimming to the appropriate brightness. After repeated discussions with businesses and lighting manufacturers, we were able to commercialize smart spec lighting. We hope that it will become the standard for office lighting in the future.
*Affiliation at the time of project assignment

Designer

Mechanical MEP Engineering Department / Joined in 2012

Toshiki Isahaya

Toshiki Isahaya

It was essential for business owners to understand the need to review specifications to optimize equipment capacity, which is important for realizing ZEB, but it was extremely good that we were able to investigate case studies together with the business owners and work on the review.
*Affiliation at the time of project assignment

Full view perspective
Full view perspective

Data

Property Name

(Tentative name) Uchikanda 1-chome Project
location

1-31-11 Uchikanda, Chiyoda-ku, Tokyo (land number)
Site area

Approximately 5,100㎡
Total floor area

Approximately 85,200㎡
scale

26 floors above ground, 3 floors below ground, 2 floors in the penthouse
height

Approximately 130m
Building coverage ratio

Approximately 65%
Floor-area ratio

Approximately 1400%
Completion

January 2025 (planned)
Main Applications

Offices, stores, business and industrial support facilities, parking lots, etc.
Design and Construction Supervision

Mitsubishi Jisho Sekkei Inc.
Construction

Taisei Corporation

OTHER COLUMNS

MEP Engineering Speak: Environment and Facility Idea Note Vol.15

Ideas for creating a comfortable space that harmonizes with wood

Kumamoto Tokio Marine & Nichido Building

MEP Engineering Speak: Environment and Facility Idea Note Vol.14

Facilities planning to overcome the "hurdles of wooden construction" for a new era

The Royal Park Canvas Sapporo Odori Park

MEP Engineering Speak: Environment and Facility Idea Note Vol.13

Moving away from simple replacement: How to approach ZEB Renovation (Part 2)

Renovating existing stock to become ZEB

MEP Engineering speaks. Environment and equipment idea notebook No.12

Moving away from simple replacement: How to approach ZEB Renovation (Part 1)

Renovating existing stock to become ZEB

MEP Engineering Speak: Environment and Facility Idea Note Vol.11

Creating a comfortable "air" environment with renewable energy

Takasago Thermal Innovation Center

MEP Engineering Speak: Environment and Facility Idea Note Vol.10

Delivering light, wind, and temperature to the entire space

SEITOKU Kindergarten

MEP Engineering Speak: Environment and Facility Idea Note Vol.09

Lighting design creates an energy-efficient and iconic reading space

MUFG PARK Library

MEP Engineering Speak: Environment and Facility Idea Note Vol.08

Electrical work expands from lighting to data utilization and security

FUKAYA-HANAZONO Premium Outlets®

MEP Engineering Speak: Environment and Facility Idea Note Vol.07

Initiatives based on the "facilities" that support the city

Otemachi Center & Otemachi One Sub-Plant / DHC plant relocation due to redevelopment

MEP Engineering Speak: Environment and Facility Idea Note Vol.06

Contributing to the BCP of the entire town through "water independence"

Otemachi Financial City Grand Cube

MEP Engineering Speak: Environment and Facility Idea Note Vol.05

Creating a more comfortable, smarter, greener office

Kayabacho Green Building

MEP Engineering Speak: Environment and Facility Idea Note Vol.04

Delivering energy-saving air by "crawling" along the ceiling

Shinryo Shinjyo Building

MEP Engineering talk. Environment and facility idea notes Vol.03

Paving the way for radiant air conditioning using natural energy

Shinryo Shinjyo Building

MEP Engineering Speak: Environment and Facility Idea Note Vol.02

Lighting designs born from a variety of thoughts and environments

Shinryo Shinjyo Building
Full view perspective

MEP Engineering Speak: Environment and Facility Idea Note Vol.01

Even skyscrapers are ZEB Ready

(Tentative name) Uchikanda 1-chome Project
MEP Engineering designers talk. Environment and equipment idea notebook

Update : 2022.11.10

Tags

PAGE TOP