Murdoch University Research Repository

Welcome to the Murdoch University Research Repository

The Murdoch University Research Repository is an open access digital collection of research
created by Murdoch University staff, researchers and postgraduate students.

Learn more

Feasibility of a natural gas cogeneration system at Murdoch University

Makowiecki, Neven (2009) Feasibility of a natural gas cogeneration system at Murdoch University. Internship Report, Murdoch University.


This report documents the procedure and findings of an economic feasibility study for a trigeneration system at Murdoch University that was performed in accordance with the requirements of an Internship with MTU Detroit Diesel Australia. The system could be used for power generation, space cooling and heating and extends to the possibility of selling waste energy to Saint John of God Hospital.

Specific components and locations were selected as the basis of the feasibility study. Predictions for the cost of energy and carbon credits were varied to determine the effect on economic feasibility.

The natural gas fueled 20 cylinder reciprocating engine provided by MTU Detroit Diesel Australia would run at a constant output of 2145kWe to provide 75% of Murdoch University’s electricity needs. The heat from the exhaust would be fed directly to an absorption chiller. The jacket water from the engine would be sold to Saint John of God Hospital for a cost.

The absorption chiller provided by Broad would be used to provide an extra 1745kWr capacity to Murdoch University’s existing chilled water pipe circuit. At the estimated time of installation, this would bring the chilled water capacity at Murdoch University up by 15% to 11700kWr.

The jacket water would be pumped under Murdoch Drive to Saint John of God Hospital to provide all space heating requirements amounting to 7TJ per year.

The results of the feasibility study indicate that the proposed system would pay for itself in nine years. 3.6 million dollars would be saved over the estimated 25 year life time of the project when compared to the current system. The predictions for the cost of energy over the next decade would have a significant effect on payback period. Collection of reliable energy rate predictions is the next step in creating a more accurate feasibility study. A detailed risk analysis is also required.

Item Type: Internship Report (Bachelor of Engineering)
Murdoch Affiliation: School of Engineering and Energy
Item Control Page Item Control Page


Downloads per month over past year