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TOPIC 2 : COLD & HOT WATER SUPPLY SYSTEM IN A BUILDING - Coggle Diagram
TOPIC 2 : COLD & HOT WATER SUPPLY SYSTEM IN A BUILDING
TYPES OF COLD WATER SYSTEM
Direct system = Water is supplied direct from mains to fixtures
Indirect system = Water going to overhead tank and then the water is supplied to different floors by gravity
ADVANTAGE & DISADVANTAGES
DIRECT WATER SUPPLY SYSTEM
Saving in pipe work especially in multistory buildings.
This is due to cold water distribution pipe from the cistern being omitted
Fresh drinking water may be obtained at any point
ADVANTAGES
DISADVANTAGES
There is a danger of foul water from the sanitary fittings being siphoned back into the main water
During peak periods there is a tendency for the lowering of pressure
If there is a main brust there is no store of water
INDIRECT WATER SUPPLY SYSTEM
ADVANTAGES
There is no risk of back siphon age with this system
There is no tendency of pipe bursting due to the low pressure in pipe work
In cast of an interruption in the mains supply there is an adequate store of water
DISADVANTAGES
Longer pipe runs are required
A large storage cistern is necessary
Fresh drinking water is only available at the kitchen sink (or single point)
TYPES OF HOT WATER SYSTEM
Heat pumps
Hot water heat recovering
Solar energy
Geothermal heating