This tool determines the amount of energy that moves from one system to another per unit of time due to a temperature difference. For example, such a device can quantify the energy flow from a hot surface to the surrounding cooler air, expressed in units like Watts or BTU/hour. It takes into account factors like the materials involved, the temperature gradient, and the surface area through which the energy travels.
Accurately predicting energy exchange is critical in various engineering disciplines. Its use allows for optimized designs in applications ranging from building insulation to the development of efficient engines. Historically, these computations required complex manual calculations and simplifying assumptions. Modern tools greatly increase accuracy and speed, leading to better resource management and reduced energy waste.