Water heating is a thermodynamic process that uses an energy source to heat water above its initial temperature. Typical domestic uses of hot water include cooking, cleaning, bathing, and space heating.In industry, hot water and water heated to steam have many uses. common arrangement where hot-water space heating is employed, is for a boiler to also heat potable water, providing a continuous supply of DHW without extra equipment. Appliances that can supply both space-heating and DHW are called combination (or combi) boilers.
1 The population of South Africa is estimated at 53,139,528 as of July 1 2014. 2  South Africa's population is equivalent to 0.73% of the total world population. 3  South Africa ranks number 25 in the list of countries by population.
Statistics South Africa P0302. Mid-year population estimates, 2014. 2. Summary. ï· This release uses the cohort-component methodology to estimate the 2014 mid-year population of South. Africa. ï· The estimates cover all the residents of South Africa at the 2014 mid-year, and are based on the latest.