One needs to know the specific heat of concrete in order to answer this.
q = mC∆T
we know q = 52800 joules and the ∆T is 5 degrees. We do not know m (mass) or C (specific heat), so there are 2 unknowns.
Heat Energy in joule = mass x specific heat capacity x rise in temperature
mass = 5 kg
rise = 10 K
You need specific heat capacity of concrete. Better search from data book or just Google.
10
The needed energy is 10 calories.
42 J
mmmm enthalpy
Mass, heat capacity, the desired raise in temperature.
raise the temperature of the body by 1 Celsius
The needed energy is 10 calories.
42 J
mmmm enthalpy
2288777744x10 to the power of Bush
You need the amount of water, the temperature of the water, and the desired temperature.
As soon as the temperature drops below the dew point, water will condense from water vapor.
Specific heat capacity tells you how much stuff energy can store. specific heat capacity is the amount of energy needed to raise the temperature of 1kg of a substance by 1 degrees celsius. water has a specific heat capacity of 4200 J/kg degrees celsius.
Basically because there is energy needed for the temperature to rise or become lower, but energy is also needed to change the phase, so instead of the energy being used to change the temperature, it is being used to change the phase, therefore temperature does not change.
The air temperature needed for frozen precipitation to form is 32 degrees Fahrenheit.
raise the temperature of the body by 1 Celsius
Mass, heat capacity, the desired raise in temperature.
About 10% during the outdoor temperature from about 40 degrees to 20 degrees. Not a lot beyond those temperatures that make frost on the outdoor coil...assuming you have a unit with a good electronic defrost control.