Energy saving effect and mechanism of cooling setting temperature increased by 1 °C for residential buildings in different cities

Shurui Guo, H. Yang, Y. Li, Yin Zhang, Enshen Long

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Indoor setting temperature is a key controllable parameter by users, highly impacting the total cooling energy usage. In this paper, the hourly cooling load of residential buildings is simulated for seven cities respectively when the cooling setting temperature (CST) increases by 1 °C, and the dissimilarity and internal mechanism of the energy saving effect are discussed and revealed from the hourly and daily perspectives through two extremely contrast climatic cities. The results show that although the higher yearly energy saving amount (ESA) can appear in a hotter city, energy saving effect is all significant in different cities. The ESA in hotter months of hotter cities may not be higher than that in the corresponding months of cooler cities, and the hotter cities have more obvious platform features while the cooler cities have single peak features, and the peak value is much higher than the plateau value. The yearly cooling saving ratio (CSR) is higher in cooler cities because CSR depends on both the hourly CSR and its weightiness, and the proportion of the higher ratio hours in cool cities is larger. This study can provide references for both standard determination and behavioral energy saving for air conditioning systems.

Original languageEnglish
Article number109335
JournalEnergy and Buildings
Volume202
DOIs
Publication statusPublished - 1 Nov 2019
Externally publishedYes

Keywords

  • Building energy saving
  • Characteristic temperature method
  • Cooling energy consumption simulation
  • Setting temperature increase

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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