Performance of radial piston type reciprocating expander for CO2 refrigeration cycle

被引：23

作者：

Fukuta, Mitsuhiro ^{[1
]}

Anzai, Fumiya ^{[2
]}

Motozawa, Masaaki ^{[1
]}

Terawaki, Hiroyuki ^{[2
]}

Yanagisawa, Tadashi ^{[1
]}

机构：

[1] Shizuoka Univ, Dept Mech Engn, Naka Ku, Hamamatsu, Shizuoka 4328561, Japan

[2] Shizuoka Univ, Grad Sch Engn, Naka Ku, Hamamatsu, Shizuoka 4328561, Japan

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2014年 / 42卷

关键词：

Expander; CO2 refrigeration cycle; Power recovery; Throttling loss; Reciprocating expander; ROTARY VANE EXPANDER; CARBON-DIOXIDE CYCLE; EXPANSION DEVICE; RV-0; EXPANDER; PART II;

D O I：

10.1016/j.ijrefrig.2014.02.005

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Various types of expanders have been investigated to recover a throttling loss and to improve the performance of CO2 refrigeration cycle. However, the capacity of the expander studied so far is so large that it cannot be used for a small cycle such as a vending machine, since the performance of small expander tends to get worse due to influence of leakage. In this paper, a novel reciprocating expander which can be applied to the small cycle is designed and its performance is examined. The expander has four cylinders and pistons arranged radially, and controls supply and discharge of refrigerant by a reciprocating motion of an adjacent piston. It is found that the developed expander can be operated with a small flow rate and the total efficiency attains to 0.4 over the wide range of rotational speed. (C) 2014 Elsevier Ltd and IIR. All rights reserved.

引用

页码：48 / 56

页数：9

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