It is necessary to mention that the thermal energy which is measured in Giga calories, and the amount of water measured in cubic metres, are completely different physical quantities. It is known from course of physics of high school. So really we are not talking about translation gigacalories per cubic meter, and about finding the correspondence between the quantity of heat spent on heating the water, and the volume of the resulting hot water.
By definition, a calorie is the amount of heat required to heat one cubic centimeter of water by 1 degree Celsius. Gigacalorie used for measuring thermal energy in heating and utilities, it's a billion calories. 1 metre is 100 centimeters therefore, in one cubic meter is 100 x 100 x 100 = 1,000,000 centimeters. Thus, to heat a cube of water 1 degree, you will need a million calories or 0.001 Gcal.
The temperature of hot water flowing from the faucet must be at least 55oC with. If the cold water inlet to the boiler has a temperature of 5oC, it must be heated to 50oC. On heating 1 cubic meter will require to 0.05 Gcal. However, when water moves through pipes to heat losses inevitably occur, and the amount of energy expended in the provision of water supplies, in fact it is about 20% larger. The average standard of consumption of thermal energy for obtaining the cube of hot water shall be equal to 0,059 Gcal.
Consider a simple example. Let the interheating period, when all the heat is used only to provide hot water, heat consumption according to the testimony of communal counter made up of 20 Gcal per month, and tenants in the apartments which installed water meters, spent 30 cubic meters. m hot water. They account for 30 x 0,059 = 1,77 Gcal. Heat consumption of all other tenants (let them be 100): 20 – 1,77 = 18,23 Gcal. One person of 18.23/100 = 0,18 Gcal. Translating Gcal in m3, we get the hot water consumption 0,18/0,059 = 3,05 cubic meters per person.
Advice 2 : How to translate Gcal in MW
When calculating thermal capacity of the heating equipment most often used are derived from non-si unit calorie (kilocalorie, megacalorie, Giga-calorie, etc.). While in the international system of SI units to measure power, including thermal, it is recommended to use a watt and its derivatives (kilowatts, megawatts, gigawatts, etc.). These units are connected between a constant coefficient, which should be used for conversion.
Multiply the measured in Giga-calorie value by a factor equal to 1,163 to transfer thermal power in megawatts.
Use an online unit converters as the fastest method of conversion gigacalories per megawatts. For example, go to the page http://convert-me.com/ru/convert/powerin the "calories per hour", placed in the section "CGS and non-si units", enter the measured in Gcal value and click "Calculate" or simply press the tab key. The value entered is the value in megawatts can be seen and, if necessary, and copy in the "MW" posted above - in the section "international system of units (SI)".
There are less simple method of recalculation of the gigacalories to megawatt to use any online calculator. For example, you can use the computers embedded in Google search engine or Nigma. Going to the website of the chosen search engine, enter the desired mathematical operation in the search query box. For example, if you need to translate to megawatts value of 2.47 Giga-calorie, the search query should be formulated as follows: "2,47*1,163". After entering a query in the Google search engine to click send it to the server is not required, and when using solver Nigma necessary.
Use the built-in Windows calculator in the absence of Internet access. It can be run by opening the main menu by clicking the start button, selecting Run, then typing calc and clicking the "OK" button. User interface duplicates the standard buttons of an ordinary calculator and input the known values in Gcal and multiplying it by the number 1,163 should not cause any difficulty.