News story

Important reminder for CHPQA RP's

This news article was published under the 2010 to 2015 Conservative and Liberal Democrat coalition government

RPs of CHP Schemes that supply heat by means of circulating hot water systems (or other liquid-phase systems)

Currently there are three heat monitoring options:

  • Option 1: Stand-alone commercially available heat meters (fully integrated heat meters)
  • Option 2: Heat metering by computation within control systems, i.e. BMS [use flow and return temperatures and measure flow rate]
  • Option 3: Schemes with TPC <2 MWe with a dump facility [Use 2 temperature sensors and fixed flow rate]

However for New Schemes, installed and commissioned after January 2008, only two options are allowed, namely:

  • Option 1: Stand- alone Commercially available heat meters (fully integrated heat meters)
  • Option 2: Heat metering by computation within control systems, i.e. BMS [use flow and return temperatures and measure flow rate]

Note: Schemes with TPC <2MWe with no heat rejection facility and also no fired boilers, are not required to meter heat outputs, as set out in CHPQA GN13.2.

Guidance note on CHP Scheme Heat Outputs GUIDANCE NOTE 16