In this lab investigation, students will employ the methods of calorimetry to approximate the amount of energy contained in a selection of biomass types and other food items.
The heat given off from the reaction will be absorbed by water that is suspended above the burning sample. This method indirectly measures the amount of heat given off by combustion through observing the changing temperature of the water.
Learning Objectives
Upon completion, students will be able to:
- Understand and employ the techniques of calorimetry
- Calculate how many calories of energy/g for several biomass/biofuel items and compare these values to established literature values
- Determine ash content and its impact on energy
- Understand the impact of moisture on biomass energy content
- Discuss how this experiment can be improved to provide more accurate results
| Download the Full Package |
Concepts/Skills
Combustion, Phase Changes, Calorimetry, Energy Content
Prior Knowledge
Background provided
Time Required
90 minutes
Required Supplies
Lab balance, test tube, test tube holder, ring stand, thermometer and clamp, distilled water, evaporating dish, wire screen, lighter/matches, heat-resistant gloves or tongs