Operating characteristics of a miniature swing rotary expander for a Rankine cycle regenerative system using waste heat

Name: Makino, Daiki

Organization : Kokushikan University

Email : s2me001h@kokushikan.ac.jp

Name: Otaka, Toshio

Organization : Kokushikan University

keyword: Regeneration system

; Low temperature waste heat

; Rankine cycle

; Swing rotary expander

Abstract: Greenhouse gases are major international problem to be solved. Therefore, it is important to use efficiency, and high energy conservation measures are needed. For the reason, waste heat regeneration systems that utilize low temperature waste heat from hot springs and factories are attracting attention. There has been limited search Rankine cycle as a highly efficient miniature regenerative system using low temperature waste heat. Most of the currently practical use regeneration systems using waste heat are in over the 1kW class. Although there have been reported case of thermoelectric power generation using low temperature heat sources, there are no practical example of high efficiency systems. The authors have therefore designed and developed a 300W class swing rotary expander (hereafter referred to as “Prototype”) for use miniature regeneration systems. This Prototype is installed to a flange case for convenient experimentation. The design specifications of the Prototype are shaft output of 300W, expansion unit inlet temperature of 353K expansion unit outlet temperature of 323K, and HFC 134a as the working fluid. HFC13a is for experimental convenience. The mechanism part uses a swing rotary with 2 cylinders. The intake does not use valve. This paper compares Prototype with an already developed 1 kW class expander for vehicle waste heat and presents the shaft power analysis and thermodynamic characteristics. These results reveal the usefulness of the miniature low temperature waste heat regeneration system. Furthermore, these results demonstrate that the system containing a swing rotary expander is one of the promising candidates as a new waste heat regeneration system.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2024

Modified: 2024-12-18

Issued: 2024-12-18

บทความ/Article

application/pdf

BibliograpyCitation : In Thai Society of Mechanical Engineers (TSME) and Chiang Mai University. The 13th TSME International Conference on Mechanical Engineering (TSME-ICoME 2023) (pp.746-751). Chiang Mai : Chiang Mai University, 2023

eng

©copyrights King Mongkut's University of Technology North Bangkok

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	TSME-ICoME13 2023pp.746-751.pdf	972.04 KB

ใช้เวลา

0.031291 วินาที