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.
In percentages: South Africa's largest province is the Northern Cape (30.5%) and the smallest Gauteng (1.5%). In between are the Eastern Cape (13.8%), the Free State (10.6%) and Western Cape (also 10.6%), Limpopo (10.3%), North West (8.6%), KwaZulu-Natal (7.8%) and Mpumalanga (6.3%).auteng, the smallest province, has the largest population, and KwaZulu-Natal the second-largest. The Northern Cape, which takes up nearly a third of South Africa's land area, has the smallest population. The Eastern Cape has the third-largest population, and Western Cape the fourth-largest.