That's a big question. Do you mean how much cooling is required, or how much energy is required to cool something?
Required cooling involves calculating the heat leaks into the cooled space. This could involve solar loading, the heat leak through a wall or a window. Maybe it's the structural supports that hold up a detector at cryogenic temperatures. Typically you know something about how the amount of the heat leak varies with the temperature at its two sides. House insulation and windows have an R value that tells you how much heat leaks through as a function of the internal and external temperatures.
Once you know the load, you can calculate the amount of energy required to provide that much cooling. An air conditioner sold in the United States will have an "Energy Efficiency Rating" that tells how many BTUs/hr of cooling are produced per watt of electrical power input. So if you need 5000 BTU of cooling and your A.C. has an EER of 10, you will need 5000/10 = 500 W of electrical power to run it.
In a country that uses a sensible unit system the cooling requirement and the electrical power are both measured in Watts, so an A.C. will simply have a coefficient of performance (COP) which is the Watts of cooling per Watt of electrical power. COPs for typical air conditioners is about 3, so in the above example you would have calculated that you needed 1450 W of cooling, and with a COP of 3 you would need 480 W.
There are many factors to consider in calculating heat gain (cooling) and heat loss (heating) for a house. Such as: # and type of windows, which direction those windows face, available tree or other shade, tightness of the home, design winter,summer outdoor conditions, desired indoor winter/summer temps, house size,# of floors. Too many more to mention. There are several programs one can download (for a license fee) in order to do this calculation. It is a sizable undertaking for a novice and is best left to a pro but it can be done. Do a Google search on HVAC-Calc and try the free trial for a better idea of what I`m talking about.
Cooling tower efficiency is calculated by taking the temperature at various points of the environment that the tower is supposed to be cooling. If the temperature is high then the tower is not being very efficient.
(Useful energy that comes out) = (total energy that goes in) times (conversion efficiency)
or
(Useful energy that comes out) = (total energy that goes in) minus (energy lost in conversion)
Required temperature -10degree centigrade to +5 degree centigrade.
Total floor area 14000 square feet
Building type 7 story building
Cooling energy depends on the efficiency of cooling device used but cooling load depends on many factors such as the volume of the room, comfort band, fabrics used, geographical and climatic properties of location that the room is built. In simple terms, for a room with a specific cooling load different devices can be used. Since, each device has different efficiency, therefore different amounts of cooling energy may be obtained.
geothermal energy
calculation on mass flow rate, wet bulb temp, approach, range & condition of cooling tower installation.
Geothermal Energy
Geothermal energy is used in some areas.
Calculate condenser and coils
boi
calculation for cooling tower evaporation capacity.
There is not enough information to calculate the rate of cooling.
You calculate the new kinetic energy, you calculate the old kinetic energy, then you subtract.
Q1 In an air compressor the compression takes place at a constant internal energy and 50Kj of heat are rejected to the cooling water for every Kilogram of air. Calculate the work input for the compression stroke per kilogram of air?
heat energy
The most energy efficient home cooling systems is made by Energy Star You can read more at www.aceee.org/consumerguide/cooling.htm
Cooling energy depends on the efficiency of cooling device used but cooling load depends on many factors such as the volume of the room, comfort band, fabrics used, geographical and climatic properties of location that the room is built. In simple terms, for a room with a specific cooling load different devices can be used. Since, each device has different efficiency, therefore different amounts of cooling energy may be obtained.
by cooling it below normal temperature.
energy is calculated in "jouls"
cooling towers