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CHAPTER 2 (B); COLD AND HOT WATER SUPPLY SYSTEM IN A BUILDING, No…

- - - - Water going to overhead tank and then the water is supplied to different floors by gravity
      - 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 the pipe work.- In case of an interruption in the mains supply there is an adequate store of water.
      - Disadvantages: - Longer pipe runs are required. - A larger storage cistern is necessary. - Fresh Drinking water is only available at the kitchen sink (or single point)
    - - Advantages: - Saving in pipework, especially in multistory buildings. - This is due to the cold water distribution pipe from the cistern being omitted. - Fresh Drinking water may be obtained at any point.
      - 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 mains burst there is no store of water.
      - Water is supplied direct from mains to fixtures
  - - - Distribution pipe/ Supply pipe
        
        Riser
        
        Fixture branch
        
        Fixture supply
- - - - Tank-less water heating system
        
        Boiling water heaters
        
        Sink heaters
        
        Bath heaters
        
        Multiple heaters
        
        Advantages:
        
        Long term energy
        
        Reduced risk of water damage
        
        Less physical
        
        Disadvantages:
      - Storage system
        
        Advantages:
        
        High flow rates
        
        Disadvantages:
      - Solar Heating System