① After a certain process, the temperature changes to delta t, the heat it absorbs (or releases). Q represents heat (J)
Q = c · m · Delta t.
Q suction = c · m · (t-t0)
Q put = c · m · (t0-t)
(T0 is the initial temperature; t is the final temperature)
Where C is the specific heat associated with the process.
The unit of heat is the same as the unit of work and energy. In the International System of Units, the unit of heat is joule (referred to as joule, abbreviated as J) (in honor of the scientist joule). In history, the unit of heat was defined as calorie (abbreviated as card, abbreviated as cal), only as an auxiliary unit of energy, 1 calorie = 4.184 joules.
Note: 1 kcal = 1000 calorie = 4184 joules = 4.184 kJ
The equilibrium relationship between the heat absorbed in a certain area and the heat released and stored in a certain period of time.
Delta T = (t1-t0)
② Calculation formula for the heat released by the complete combustion of solid fuel: Q = mq Calculation formula for the heat released by the complete combustion of gas fuel: Q = Vq Q represents the heat (J), q represents the heat value (J/kg), m represents the mass of solid fuel (kg), V represents the volume of gas fuel (m ^ 3).
Q = Q discharge/m (solid); q = Q discharge/v (gas)
W = Q discharge = qm = Q discharge/m W = Q discharge = qV = Q discharge/v (W: total work)
(Calorific value is related to pressure)
SI system international units:
Q -- the amount of heat released by the complete combustion of a fuel -- Joule J.
M - indicates the mass of a certain fuel - kilograms kg
Q - indicates the calorific value of a fuel in joules, J/kg.
Thermal energy calculation formula
Q = Delta t * m * C
(Specific heat capacity is C, mass is m, and delta t is the temperature difference)
