Measuring the transient airflow rates of the infiltration through the doorway of the cold store by using a local air velocity linear fitting method

被引：14

作者：

Tian, Shen ^{[1
,2
,3
]}

Gao, Yuping ^{[1
,2
,3
]}

Shao, Shuangquan ^{[1
,2
]}

Xu, Hongbo ^{[1
,2
]}

Tian, Changqing ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing Key Lab Thermal Sci & Technol, Beijing 100190, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

APPLIED ENERGY | 2018年 / 227卷

基金：

中国国家自然科学基金;

关键词：

Infiltration; Airflow rate; Air velocity; Cooling load; Cold store; NATURAL VENTILATION; ENERGY-CONSUMPTION; EMPIRICAL-MODEL; FOOD COLD; PREDICTION; BUILDINGS; ROOMS; LOAD;

D O I：

10.1016/j.apenergy.2017.07.018

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The measurement of the infiltration airflow rates can support the calculation of the infiltration cooling load for the better understanding and optimizing the energy consumption of cold stores. However, the large temperature difference and the intense transient features make it difficult and complex to measure the airflow rates accurately. In this paper, a simple and practical method to measure the transient infiltration airflow rates is developed by using the local air velocity linear fitting. The proposed method is validated by the measurement results of the tracer gas decay method. It is concluded that the proposed method shows a good performance on the transient infiltration airflow rates measurement. The measurement errors are between +/- 10%. To enhance the application of this method, the layout of the measuring points of the air velocities are analyzed. The results show that, along the vertical layout direction, air velocity measuring points around the neutral level (where the cold and the warm air separate, about the middle height of the door) are not preferred when using this method. What's more, the calculation of the infiltration cooling load by using this measuring method is also discussed. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：480 / 487

页数：8

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