The average amount of water used by a conventional shower is approximately 30 l, whilst a bath requires about 80 l. Initially, it appears that showering is more energy and water efficient, but the fact is that households with showers use them more frequently than households without showers use their baths. Also, pumped and multihead showers are not so water efficient as conventional showers. Real savings can be made if you choose your products wisely.
Conventional showerheads can discharge water at between 0.3 and 0.5 l s-1. Low-flow showerheads can reduce this to below 0.2 l s-1 depending on the supply pressure. Research conducted in the USA has shown that the use of low-flow showerheads can save approximately 27 l per day per person (for a person who mainly showers rather than takes baths). This equates to an energy saving in hot water of 444 kWh per person per year for water heated by gas (or 388 kWh for water heated by electricity). The cheaper alternative to low-flow showerheads is to fit a flow restric-tor to the supply to an existing showerhead, although this may increase the showering time.
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Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.