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Start Over Author "Miao, Yufeng" Publisher elsevier bv
13 results on '"Miao, Yufeng"'

4. Study on the calculation of unsteady radiant heat transfer load with stratified air distribution based on harmonic reaction method

Author

Yu Ling, Xin Wang, Liang Qiao, Chen Huang, Liugen Lv, and Miao Yufeng

Subjects
Convection, Basis (linear algebra), business.industry, 020209 energy, Mechanical Engineering, 0211 other engineering and technologies, 02 engineering and technology, Building and Construction, Mechanics, Cooling capacity, Distribution (mathematics), Air conditioning, 021105 building & construction, 0202 electrical engineering, electronic engineering, information engineering, Harmonic, Environmental science, Point (geometry), Electrical and Electronic Engineering, business, Energy (signal processing), Civil and Structural Engineering
Abstract

The stratified air conditioning systems are widely used in large space buildings. Stratified air conditioning load (SACL) is the basis for determining the cooling capacity of air conditioning system, and it is also the key to assess its energy savings of stratified cooling. Calculation of the radiant heat transfer load (RHTL) is the difficult point to determine the SACL. In recent years, there have been many researches on the calculation of SACL. Most of them are steady-state calculation processes, and there are few studies on dynamic calculation processes. Therefore, the RHTL is taken as the research object, a novel calculation method is proposed according to the harmonic reaction method (HRM) and verified by the experiments. Experimental radiant heat transfer load can be received through convection and radiation separating method. The experimental and theoretical values of RHTL were compared and it was found that the theoretical values were in good agreement with experimental values. Therefore, the proposed method can be used to predict the unsteady RHTL accurately. Based on the verified calculation method, the effects of outdoor climatic conditions, building types and stratified heights on RHTL of an actual large space building are analyzed, which will contribute to the design and optimization of stratified air conditioning system for large space buildings.

Published
2020

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