Effect of Thermal Mass on the Cooling Load of a Well-Insulated Office Building with Radiant Cooling System

Rong Hu, Jianlei Niu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

The effects of thermal mass on the indoor environment and energy consumption of convective air systems (CASs) have been well studied. Few research refers to the corresponding effects in the zone with radiant heating/cooling system. This article aims to study the effects of thermal mass in external walls on the transmission load and energy performance in the spaces with active cooling surfaces, compared with those in identical rooms equipped only with equivalent CASs. This study is based on the investigation of energy performances in an assumed typical office building using the EnergyPlus simulation software. The weather conditions in four typical days during the cooling season in two cities (i.e., Beijing and Nanjing) are considered. The inside massive layer has positive effects on indoor temperature performance and instantaneous transmission load, but little impact on energy consumption. The peak cooling load in the zone with heavyweight can be shifted in a proper operation strategy. Although the cooling surface reduces the effect of thermal mass to radiation heat transfer and enhances the conduction heat gain, a structure with an inside massive layer is recommended in the zone with cooling surface.

Original languageEnglish
Title of host publicationProceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019 - Volume III
Subtitle of host publicationBuildings and Energy
EditorsZhaojun Wang, Fang Wang, Peng Wang, Chao Shen, Jing Liu, Yingxin Zhu
PublisherSpringer
Pages441-451
Number of pages11
ISBN (Print)9789811395277
DOIs
Publication statusPublished - 1 Jan 2020
Event11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019 - Harbin, China
Duration: 12 Jul 201915 Jul 2019

Publication series

NameEnvironmental Science and Engineering
ISSN (Print)1863-5520
ISSN (Electronic)1863-5539

Conference

Conference11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019
Country/TerritoryChina
CityHarbin
Period12/07/1915/07/19

Keywords

  • Energy conservation
  • Radiant cooling system
  • Thermal mass

ASJC Scopus subject areas

  • Environmental Engineering
  • Information Systems

Cite this