Mitsubishi Electric Corp announced the overview of its ultra-high-speed elevator developed for the 632-meter Shanghai Tower under construction in Shanghai, China.
For the traction motor of the elevator, Mitsubishi Electric employed a parallel drive system that uses two three-phase winding coils for each motor and controls the two three-phases with two control panels. By using two compact control panels, the company enabled to design the layout of a machinery room more freely while increasing output power. The operation of the elevator is scheduled to begin in 2014.
To realize the world's fastest speed of 1,080 m per minute, Mitsubishi Electric used new technologies for higher safety, lifting height and comfort as well as for the motor for the winch. Specifically, to enhance safety, the company employed a two-tiered brake (the company's former product has a one-tiered brake) for emergency stop and used fine ceramic with a heat resistance of up to about 1,000°C for the brake shoe.
The buffer (shock absorber) at the bottom of the elevator shaft is comprised of three tiers (the former product has a one-tiered butter) and has a stroke of 7.3 meters, which is about 30% shorter than the stroke of the former product's buffer.
For the "sfleX-rope," a rope for the winch, Mitsubishi Electric employed a new structure so that it can hold a greater weight of a longer rope. The company improved the density of the rope by using a concentric-layered steel wire and filled the gap between the layers with plastic.
As a result, the company increased breaking load by 85% while increasing mass per unit length only by 18%. The new rope is less extensible. So, when people get in the elevator, it does not shake vertically much.
This time, Mitsubishi Electric newly developed a control cable that is 20% lighter than the one used for the former product.
For the comfort, the new elevator is equipped with the "active roller guide," which detects vibration and applies anti-phase vibration to it so that the vibration of the car is reduced. While two units of the active roller guide are installed in the bottom of the former product, Mitsubishi Electric added two more to the upper side of the new elevator because a different type of vibration is applied to the new product when it is moving at an ultra-high speed. As a result, vibration was reduced to about 1/3 that of the former product.
Furthermore, the new elevator is equipped with a streamlined aerodynamic car cover that reduces air resistance as well as an air pressure control device consisting of an air blower, a duct and a box for switching between air intake and emission. As a result, rapid changes in atmospheric pressure can be prevented, reducing passengers' feeling of fullness in the ear. BD+C
Related Stories
| Feb 11, 2011
Grocery store anchors shopping center in Miami arts/entertainment district
18Biscayne is a 57,200-sf urban retail center being developed in downtown Miami by commercial real estate firm Stiles. Construction on the three-story center is being fast-tracked for completion in early 2012. The project is anchored by a 49,200-sf Publix market with bakery, pharmacy, and café with outdoor seating. An additional 8,000 sf of retail space will front Biscayne Boulevard. The complex is in close proximity to the Adrienne Arsht Center for the Performing Arts, the downtown Miami entertainment district, and the Omni neighborhood, one of the city’s fast-growing residential areas.
| Feb 11, 2011
Chicago architecture firm planning one of China’s tallest towers
Chicago-based Goettsch Partners was commissioned by developer Guangzhou R&F Properties Co. Ltd. to design a new 294,570-sm mixed-use tower in Tianjin, China. The Tianjin R&F Guangdong Tower will be located within the city’s newly planned business district, and at 439 meters it will be one of China’s tallest buildings. The massive complex will feature 134,900 sm of Class A office space, a 400-key, five-star hotel, 55 condominiums, and 8,550 sm of retail space. The architects are designing the tower with multi-story atriums and a high-performance curtain wall to bring daylight deep into the building, thereby creating deeper lease spans. The project is currently finishing design.
| Feb 11, 2011
Two projects seek to reinvigorate Los Angeles County medical center
HMC Architects designed two new buildings for the Los Angeles County Martin Luther King, Jr., Medical Center as part of a $360 million plan to reinvigorate the campus. The buildings include a 120-bed hospital, which involves renovation of an existing tower and several support buildings, and the construction of a new multi-service ambulatory care center. The new facilities will have large expanses of glass at all waiting and public areas for unobstructed views of downtown Los Angeles. A curved glass entrance canopy will unite the two buildings. When both projects are completed—the hospital in 2012 and the ambulatory care center in 2013—the campus will have added more than 460,000 sf of space. The hospital will seek LEED certification, while the ambulatory care center is targeting LEED Silver.
| Feb 11, 2011
Sustainable community center to serve Angelinos in need
Harbor Interfaith Services, a nonprofit serving the homeless and working poor in the Harbor Area and South Bay communities of Los Angeles, engaged Withee Malcolm Architects to design a new 15,000-sf family resource center. The architects, who are working pro bono for the initial phase, created a family-centered design that consolidates all programs into a single building. The new three-story space will house a resource center, food pantry, nursery and pre-school, and administrative offices, plus indoor and outdoor play spaces and underground parking. The building’s scale and setbacks will help it blend with its residential neighbors, while its low-flow fixtures, low-VOC and recycled materials, and energy-efficient mechanical equipment and appliances will help it earn LEED certification.
| Feb 11, 2011
Texas megachurch inspired by yesteryear’s materials, today’s design vocabulary
The third phase of The First Baptist Church of Pasadena, Texas, involves construction of a new 115,000-sf worship center addition. Currently in design by Zeigler Cooper, the project will include a 2,500-seat worship center (with circular layout and space for a 50-person orchestra and 200-person choir), a 500-seat chapel (for weddings, funerals, and special events), and a prayer room. The addition will connect to the existing church and create a Christian Commons for education, administration, music, and fellowship. The church asked for a modern design that uses traditional materials, such as stone, brick, and stained glass. Construction is scheduled to begin this summer.
| Feb 11, 2011
Apartment complex caters to University of Minnesota students
Twin Cities firm Elness Swenson Graham Architects designed the new Stadium Village Flats, in the University of Minnesota’s East Bank Campus, with students in mind. The $30 million, six-story residential/retail complex will include 120 furnished apartments with fitness rooms and lounges on each floor. More than 5,000 sf of first-floor retail space and two levels of below-ground parking will complete the complex. Opus AE Group Inc., based in Minneapolis, will provide structural engineering services.
| Feb 11, 2011
Four-story library at Salem State will hold half a million—get this—books!
Salem State University in Massachusetts broke ground on a new library and learning center in December. The new four-story library will include instructional labs, group study rooms, and a testing center. The modern, 124,000-sf design by Boston-based Shepley Bulfinch includes space for 500,000 books and study space for up to a thousand students. Sustainable features include geothermal heating and cooling, rainwater harvesting, and low-flow plumbing fixtures.
| Feb 11, 2011
Green design, white snow at Egyptian desert retail complex
The Mall of Egypt will be a 135,000-sm retail and entertainment complex in Cairo’s modern 6th of October district. The two-story center is divided into three themed zones—The City, which is arranged as a series of streets lined with retail and public spaces; The Desert Valley, which contains upscale department stores, international retailers, and a central courtyard for music and other cultural events; and The Crystal, which will include leisure and entertainment venues, including a cinema and indoor snow park. RTKL is designing the massive complex to LEED Silver standards.
| Feb 10, 2011
7 Things to Know About Impact Glazing and Fire-rated Glass
Back-to-basics answers to seven common questions about impact glazing and fire-rated glass.
| Feb 10, 2011
Medical Data Center Sets High Bar for BIM Design Team
The construction of a new data center becomes a test case for BIM’s ability to enhance project delivery across an entire medical campus.
