Heat Calculation

Introduction to Online Heat Converter

Our Online Heat Converter offers a convenient tool for converting between different units of heat and energy. Whether you need to convert joules to calories or BTUs to kilowatt-hours, this tool provides accurate calculations for various energy measurements.

Using our Online Heat Converter is straightforward:

• Convert Joules to Calories: Easily switch between joules and calories for precise energy measurements.
• Convert BTUs to Kilowatt-hours: Quickly convert between BTUs and kilowatt-hours for heating and energy usage calculations.
• Convert Electronvolts to Joules: Accurately convert small energy units for scientific and engineering purposes.

Key features of our Online Heat Converter include:

• Wide Range of Units: Supports multiple energy units including joules, calories, BTUs, kilowatt-hours, and electronvolts.
• Precision: Ensures accurate conversions for all your energy measurement needs.
• User-Friendly Interface: Simple and intuitive design for easy navigation and usage.

Whether you're in the field of physics, engineering, or everyday energy calculations, our Online Heat Converter provides a reliable solution for converting heat and energy units.

① When the temperature changes by △t through a certain process, the heat absorbed (or released) is represented by Q (heat in joules, J).

Q = c · m · Δt.

Heat absorbed: Q_absorbed = c · m · (t - t0)

Heat released: Q_released = c · m · (t0 - t)

(where t0 is the initial temperature and t is the final temperature)

Here, C is the specific heat capacity related to the process.

The unit of heat is the same as that of work and energy. In the International System of Units (SI), the unit of heat is the joule (J), named in honor of the scientist James Prescott Joule. Historically, the calorie (cal) was also used as a supplementary unit of energy, where 1 cal = 4.184 J.

Note: 1 kilocalorie (kcal) = 1000 cal = 1000 calories = 4184 joules = 4.184 kilojoules.

The equilibrium relationship maintained by the heat absorbed, released, and stored in a certain area over a period.

ΔT = (t1 - t0)

② Calculation formula for the heat released by complete combustion of solid fuel: Q_released = m · q. Calculation formula for the heat released by complete combustion of gaseous fuel: Q = V · q. Here, Q represents heat (J), q represents heat value (J/kg), m represents the mass of solid fuel (kg), V represents the volume of gaseous fuel (m³).

q = Q_released / m (solid); q = Q_released / V (gas)

Total work W = Q_released = qm (solid); W = Q_released = qV (gas) (W: total work)

(Heat value depends on pressure)

SI Unit System:

Q — Heat released by complete combustion of a fuel — Joules (J)

m — Mass of a particular fuel — Kilograms (kg)

q — Heat value of a particular fuel — Joules per kilogram (J/kg)

Heat Energy Calculation Formula

Q = Δt * m * C

(where C is the specific heat capacity, m is the mass, and Δt is the temperature difference)