Q7Electrical Energy Conversion And Auditing

Heat capacity is defined as the amount of heat energy required to raise the temperature of a given mass (or amount) of a substance by one degree (Celsius or Kelvin), typically expressed in units of J/°C or kJ/K for a specific total mass, or as specific heat capacity (J/kg·°C) when expressed per unit mass of the substance. Heat capacity is a fundamental thermal property used extensively in energy auditing calculations for thermal/process energy systems — for example, in calculating the energy required to heat a given quantity of water, air, or process material from an initial to a final temperature (Q=m×c×ΔT, where m is mass, c is specific heat capacity, and ΔT is the temperature change), which is essential for evaluating boiler, furnace, and other thermal equipment energy efficiency and for identifying potential heat-recovery or process-optimization opportunities during a thermal energy audit.