Paper Title:
The Energy Saving Effect of Natural Ventilation for Residential Building in Guangzhou
  Abstract

Natural ventilation is the most effective measure to reduce the cooling energy consumption, but it is quite difficult to control and quantitatively assess the natural ventilation. A method was developed with coupling simulation by both software of DeST-h and computational fluid dynamics (CFD) in typical meteorological year (TMY) in Guangzhou. First, the base room temperatures with different air change (ACH) rates of natural ventilated dwelling were simulated with DeST-h. The time period in that the indoor air temperature could meet thermal comfort requirement only by natural ventilation in occupied period was analyzed, in which the wind speed and direction in TMY was obtained for the ventilation environment simulation of rooms in windows and doors switching with the PHOENICS software. The actual air change rates in different rooms in such wind speed and direction were calculated. Also the cooling loads of building in the actual air change rates were simulated with intermittent air conditioning. The air conditioning system operated when the base room temperature was higher than 29°C. Rate of cooling loads reduction was calculated by comparing the result to the baseline, which were the cooling loads of building with 1 ACH. The actual air change rates show that the energy saving effect of natural ventilation was influenced by the windows and doors switching. 61~71.37% of the natural ventilation potential was used in the rooms with windows and doors opened, and 14.06~82.54% of the natural ventilation potential was used in the rooms with windows opened and doors closed. The rate of cooling loads reduction in rooms and building were 0.34~10.50% and 6.14% respectively.

  Info
Periodical
Chapter
Chapter 1: Materials Science and Engineering
Edited by
Dongye Sun, Wen-Pei Sung and Ran Chen
Pages
597-601
DOI
10.4028/www.scientific.net/AMM.121-126.597
Citation
C. C. Qin, L. H. Zhao, "The Energy Saving Effect of Natural Ventilation for Residential Building in Guangzhou", Applied Mechanics and Materials, Vols. 121-126, pp. 597-601, 2012
Online since
October 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Chun Han Chien, Hsien Te Lin, Jung Hua Chou, Tzu Ching Su
Chapter 4: Frontiers of Energy Engineering and Materials
Abstract:This study focuses on the efficiency of passive solar chimney in natural ventilation performance. A case study is conducted for the...
2442
Authors: Li Hua Zhao, Cui Cui Qin
Chapter 3: Efficient Energy-Saving Building Sanitary Equipment and Systems
Abstract:Assessing the energy saving of natural ventilation is difficult, especially for large scale naturally ventilated buildings, due to the lack...
685
Authors: Vivien Soebiyan, Firza Utama Sjarifudin, Jefry Efendi
Chapter 7: Architecture, Building Materials and Construction Technologies
Abstract:This study aims to get the openings design of the hybrid systems based on the needs of Air Changes per Hour (ACH) in a vertical housing unit....
423