Staffordshire University logo
STORE - Staffordshire Online Repository

Gamma-Stirling engine – The effect of different working gases and pressures

OBERWEIS, Sacha and AL-SHEMMERI, Tarik (2011) Gamma-Stirling engine – The effect of different working gases and pressures. European Association for the Development of Renewable Energies, Environment and Power Quality.

[img] Text
ICREPQ11 oberweis.pdf
Restricted to Registered users only

Download (397kB) | Request a copy

Abstract or description

This paper presents an investigation into the effects of changing the charge pressure as well as the working gas in a gamma type Stirling engine. An algorithm is developed to predict the effects of engine pressure and the type of working gas on the performance of a gamma-type Stirling engine. Based on the equation of state and the principle of energy and mass conservation, a set of first order differential equations are established. The fourth order Runge-Kutta method is used to solve these equations. The heat losses due to imperfect regeneration and pumping losses in the heat exchangers are included in the solution. The results show that using a working gas of lower density will cause less power losses compared to a working gas of higher density. Above 7.5bar the increase in efficiency with increased pressure becomes less significant with less than 4% increase from 7.5bar to 15bar for air. There is a linear relation between the amount of actual work and the nominal pressure charge of the engine. The results obtained from this simulation show a satisfactory working condition of the engine. The model sections and subsections were verified step by step using detailed and laborious manual calculations.

Item Type: Book / Proceeding
Faculty: Previous Faculty of Computing, Engineering and Sciences > Engineering
Depositing User: Sacha OBERWEIS
Date Deposited: 12 Nov 2012 15:39
Last Modified: 24 Feb 2023 13:35

Actions (login required)

View Item View Item

DisabledGo Staffordshire University is a recognised   Investor in People. Sustain Staffs
Legal | Freedom of Information | Site Map | Job Vacancies
Staffordshire University, College Road, Stoke-on-Trent, Staffordshire ST4 2DE t: +44 (0)1782 294000