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Retrofit of the old building stock presents a good possibility to reduce the energy consumption. However, as the envelopes of old buildings become tighter, a risk increases that the fresh outside air supplied to the indoor environment by natural infiltration can decrease below the amounts required for a comfortable indoor environment, especially in buildings where mechanical ventilation has not been installed. This study presents an efficient method to measure the ventilation intensity, demonstrated on a 40-years old high-rise office building after a complete envelope retrofit. The well-established tracer gas decay and tracer gas step-up method were employed to obtain the ventilation intensity, using the natural CO2 produced by the occupants as the tracer gas. The measured values of the air change rate were between 0.1 and 0.7 1/h for the simple façade, whereas it ranged from 0.2 to 0.5 1/h for the double skin façade, with the windows closed. The level of compliance with ventilation requirements varied, depending on the standard and the philosophy adopted.

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step, high-rise buildings are dotted at each unit’s corner. And the space left in the middle will be of public or green function at last (see Fig. 5 ). Above all is the standardized answer of ‘Modernization’ that SOM teaches to Chinese cities. It

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, Baumeister , Vol. 2, 2002, pp. 54–59. Office Building in Hanover, High-rise building on the cord, Deutsche Bauzeitung , Vol. 10, 2000, pp. 67–75. Kistelegdi I. Jr. The role of energy design in the

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] Ding N. , Chen , T. , Zhang H. Experimental study of elevator loading and unloading time during evacuation in high-rise buildings , Fire Technology , Vol. 53 , No. 1 , 2017 , pp. 29 – 42

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bridges of short to medium spans for high-speed traffic using viscoelastic dampers ,” Eng. Struct. , vol. 40 , pp. 519 – 528 , 2012 . 10.1016/j.engstruct.2012.03.016 [17] C. S. Tsai and H. H. Lee , “ Applications of viscoelastic dampers to high-rise

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schematic design , Taylor&Francis, 2011 . [9] Krajcik M. , Takacs J. Ventilation intensity in a high-rise building after

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Pollack Periodica
Authors: Mohammad Reza Ganjali Bonjar, Kristóf Roland Horváth, Bálint Baranyai, and István Kistelegdi

. Soleimani-Mohseni , G. Nair , and R. Hasselrot , “ Energy simulation for a high-rise building using IDA ICE: Investigations in different climates ”, Building Simulation , vol. 9 , no. 6 , pp. 629 ‒ 640 , 2016 . 10.1007/s12273-016-0300-9 [7] L

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Pollack Periodica
Authors: Gábor Heckenast, Marcel Ferencz, and András Tibor Kertész

expansion (high-rise buildings, vertical cities), horizontal expansion development of new neighborhoods [ 2 ] (to the detriment of the natural environment) and existing abandoned industrial areas (rehabilitation of deteriorated urban areas: new neighborhoods

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.proeng.2011.07.120 [7] Jose A. Sy. , Naveed A. Aung T. H. , Rayamajhi D. Application of buckling restrained braces in 50 storey building , International Journal of High Rise Buildings , Vol. 3 , No. 1 , 2014 , pp. 81 ‒ 87 . [8] Astaneh-Asl A

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demand for high-rise building, especially those with steel structures, is increased. However, the incapability of steel to tolerate heat makes the design engineer society worried about designing resistant building with steel structures. The guidelines for

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