THERMAL SCIENCE

International Scientific Journal

Thermal Science - Online First

Jie Chai

,

Xiaohong Yang

,

Yunsong Li

,

Xiaoyu Gao

,

Yongchao Quan

online first only

Design and manufacture of new stirling engine disc heater

ABSTRACT
The Stirling engine heater is a key component between the external heat source system and the working circulation system, which drives the piston by transmitting heat energy to the working gas. In this study, based on the U-shaped tube heater, a disc heater was designed and manufactured, and the average photothermal conversion efficiency reached 56.58% under outdoor conditions. The heat flux distribution of the two heaters at the same solar normal direct irradiance of 1000W/m2 was compared using TracePro optical simulation software. The results show that the average heat flux density of the disc heater (2.083×103W/m2) is more uniform than that of the U-shaped tube heater, and the effective radiation area is larger, which verifies the rationality of the design of the disc heater.
KEYWORDS
Disc heater, Normal direct irradiance, TracePro, Heat flux density
PAPER SUBMITTED: 2023-07-09
PAPER REVISED: 2023-10-02
PAPER ACCEPTED: 2023-11-12
PUBLISHED ONLINE: 2024-01-20
DOI REFERENCE: https://doi.org/10.2298/TSCI230709280C
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Design and manufacture of new stirling engine disc heater