A novel inexpensive calorimeter as a thermodynamic laboratory experiment

Abstract

This paper describes an inexpensive calorimeter for measuring the higher calorific value of Liquified Petroleum Gas (LPG). The calorimeter is a hybrid of a Boys gas calorimeter and cone calorimeter. The calorimeter does not require a continuous supply of LPG. The mass flow rate of fuel is measured using a load cell. The hybrid calorimeter in its present form can measure the higher calorific value for LPG with a relative error of approximately 25%. Future projects to improve the accuracy of the calorimeter and extend its capability to measure the lower calorific value of LPG are considered. It is argued that the self-built calorimeter in its present form makes it a better laboratory experiment for the education of engineering students than an accurate commercially available apparatus.