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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/34762

Title: Evaluating energy savings retrofits for residential buildings in China
Authors: Tsang, Christopher
Spentzou, Eftychia
He, Miaomiao
Lomas, Kevin J.
Issue Date: 2018
Publisher: IBPSA
Citation: TSANG, C. ... et al., 2018. Evaluating energy savings retrofits for residential buildings in China. Presented at Building Simulation and Optimization 2018, 4th England IBPSA conference, Cambridge, UK, 11-12th Sept.
Abstract: Building retrofit plays an important role in reducing energy consumption and carbon dioxide emissions whilst increasing occupant thermal comfort. This study used DesignBuilder to predict the energy saved by retrofitting a typical flat in Chongqing, a city in the hot summer, cold winter region of China. To increase the reliability of predictions, the model was verified by measured indoor air temperature for a one-week period in April. Five retrofit measures were evaluated, external wall insulation, new windows, increased air tightness, external shading, and higher efficiency of air conditioning. Three types of households with different AC operating schedule were assumed, high, medium and low. The variance in the model predictions due to the uncertainty in the model input parameters was calculated. The results showed that the energy saved depended on the use that was made of the AC system. For high energy users, 40 to 68% of the annual space-conditioning energy could be saved depending on the retrofit, whereas for low energy users the savings were 30 to 58%. Thermal comfort has improved in winter for low and medium energy users, but no improvement in summer.
Description: This is a conference paper.
Sponsor: This research was supported by the UK Engineering and Physical sciences Research Council (EPSRC EP/N009797/1) for the collaborative China-UK project Low carbon climate responsive Heating and Cooling of cities (LoHCool)
Version: Published version
URI: https://dspace.lboro.ac.uk/2134/34762
Publisher Link: https://www.bso2018.event.cam.ac.uk/
Appears in Collections:Conference Papers and Presentations (Architecture, Building and Civil Engineering)

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