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Hot Water Temperature Maintenance

 

Hot water trace heating

Q.  When is hot water temperature maintenance trace heating required?

 

The energy saving that can be achieved on the hot water service pipework can have a huge impact on the total energy reduction of a building, more than most other services.

Hot water temperature maintenance trace heating ensures hot water at the point of use, whilst reducing power consumption and water wastage, as well as offering the option to disinfect periodically against Legionella.

The temperature of hot water cools rapidly when subjected to lower ambient temperatures and under no-flow conditions.  By installing hot water temperature maintenance trace heating, under thermal insulation, the hot water in the pipework can be maintained above its minimum required temperature (usually +55°C or +65°C) in a predetermined minimum ambient temperature (usually +18°C).

 

Q.  Why install hot water maintenance trace heating?

 

Today's market is calling out for more cost efficient and environmentally friendly solutions. This has never been more true than in hot water supply and distribution where energy consumption is a significant proportion of a building energy usage.

The combination of hot water maintenance trace heating and the correct thermal insulation will:

  • Reduce the amount of pipework required to supply the hot water by removing the need for the 'return' part of a flow and return system
  • Remove the need to 'heat' and then 're-heat' the water as required by a flow and return system. Reducing the power needed to heat raise the water
  • Reduce the amount of water wasted whilst waiting for the hot water to reach the outlet
  • Allow for periodic purging of the hot water pipework system to protect against Legionella

 

ESH hot water heating tapes

 

Our hot water temperature maintenance heating cable is a parallel resistance, cut to length on site, self regulating heating cable designed to compensate for heat losses from hot water distribution systems, as well as offering the option to disinfect periodically against Legionella.

Where applicable the water temperature can be reduced by a thermostatic mixing valve (TMV) to meet the current building regulations.