Proposed split-type vapor compression refrigerator for heat hazard control in deep mines

被引：44
作者：
Chen, Wei [1 ]
Liang, Shiqiang [2 ]
Liu, Jing [3 ]
机构：
[1] Qingdao Univ Sci & Technol, Coll Electromech Engn, Qingdao 266061, Peoples R China
[2] Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
[3] Henan Polytech Univ, Sch Civil Engn, Henan 454000, Peoples R China
来源：
APPLIED THERMAL ENGINEERING | 2016年 / 105卷
基金：
中国国家自然科学基金;
关键词：
Split-type vapor compression refrigerator (SVCR); R134a; Heat hazard control; Deep mine;
D O I：
10.1016/j.applthermaleng.2016.03.014
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The thermodynamic performance of a proposed split-type vapor compression refrigerator (SVCR) for heat hazard control in a deep mine was numerically analyzed. The thermodynamic characteristics of the suction process of the proposed system were also simulated and analyzed. In the suction direction, the pressure, velocity, temperature, and specific enthalpy of R134a vapor dropped, whereas its specific volume and specific entropy rose. The variations in the superheat of the compressor inlet and the characteristics of the pressure drop of the suction process were also described in detail and analyzed. For comparison with the theoretical cycle, a variable, gamma, defined as the COP ratio of the proposed system and the theoretical cycle, was presented, and the variations of gamma were studied and discussed in detail. The proposed system was compared with a cooling water system and an ice slurry system, and results indicate that the thermal performance of the proposed system is better than that of the cooling water system. The thermal performance of the ice slurry system is better than that of the proposed system when a mine is sufficiently deep. However, when the mine is not too deep and the evaporation temperature, TE, is not too low, the proposed SVCR system is the better choice. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：425 / 435
页数：11
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