New guidance on the design and installation of heat pump systems for
multi-unit residential buildings has been published by the Chartered
Institution of Building Services Engineers (CIBSE).
The decarbonisation of heating is a key element of UK climate policy. Heat
pumps are the most energy-efficient means of heating a building electrically
and, with a decarbonising electricity grid, are a widely applicable low-carbon
heating solution. As such, they have a crucial role to play in the UK's
transition to net zero greenhouse gas emissions by 2050, particularly in the
residential sector.
CIBSE
Application Manual, AM16: Heat pump installations in multi-unit residential
buildings 2021, has been written to enable engineers,
architects and contractors to understand how heat pump technology can be best
applied on new-build and retrofit applications in high density housing,
including apartment blocks, student accommodation and care homes.
The guidance deals with the design and optimisation of multi-unit heat pump
systems. It addresses areas of design that are crucial for good heat pump
performance, including the importance of sizing a heat pump correctly,
mitigating the loss of capacity caused by defrost cycles and the impact of
lower domestic hot water temperatures on design.
The manual provides useful information on installation, commissioning,
operation, maintenance and decommissioning. It also addresses the issue of user
guidance for a technology that is very different to traditional fossil fuel
heating systems. In addition, because cost is such a key project driver for
residential construction, AM16 includes information on relative capital, energy
and maintenance costs.
A series of case studies have been included in the document to showcase the
application of heat pumps in both new and existing multi-residential projects.
The application manual was authored by Arup with the support of the NHBC
Foundation.
David Richards, chair of the CIBSE AM16 Steering Group said: "Heat
pumps will be a big part of our future as building services engineers and AM16
provides timely guidance and resource as we start down the road to an all-electric,
zero carbon future".
Joshua Bird, Senior Engineer, Arup said: “The successful application of heat
pumps to high-density housing must now keep pace with the rapid transition
towards net-zero, and the mass rollout of this technology. Whilst heat pumps
can provide a widely applicable, low-carbon heating solution for
multi-residential developments they are not a drop-in replacement for
gas-boilers. With the correct knowledge, we can benefit from affordable,
low-carbon, reliable, and safe heat from this fast-evolving technology".
Richard Smith, Head of Standards, Innovation and Research at NHBC said:
“NHBC welcomes the timely publication of CIBSE’s manual covering heat-pump
installations for multi-unit residential buildings. As the house building
industry transitions to low-carbon heat sources it is essential that there is
practical guidance for designers, installers and building operators to ensure
these building systems operate reliably, sustainably and affordably.”
CIBSE AM16: Heat pump installations in multi-unit residential buildings
2021, brings together best practice and industry-wide advice. It is
available to download from the CIBSE website
