Heat pumps are set to play a key role in the UK’s national decarbonisation plans, but can be problematic when being installed into commercial premises as a result of the disruption that can occur.
Many changes to the heating system may have to be made including upgrades to radiators, pipework and electrical systems. The radiators themselves may have to be replaced to ensure there is enough heat available for the property, as heat pumps operate at a lower flow temperature (between 35-55°C) than a traditional gas boiler, which usually operates in a range of 60-75°C.
Pipework may have to be updated, since low-temperature heat pumps require a higher level of water flow rate than boilers to operate efficiently that smaller pipes do not encourage. Larger pipes transfer heat effectively and efficiently at lower temperatures.
Electrical upgrades will also be required if a normal temperature heat pump is installed. As the main source of power is transitioned from fossil fuels to electricity, a service panel that is only designed to operate at 100-amps will not be sufficient. Heat pumps require high voltage circuits when activated in cold weather. High-temperature heat pumps (HTHPs) can reduce the amount of adaptations to radiators or pipework that might be needed when retrofitting. Because high temperature heat pumps produce water that is heated at similar levels to a gas boiler, there is potential for limited additional requirements to rip out radiators or replace pipework. The design of a high-temperature heat pump means that an installation could work with existing infrastructure, not against.
When a HTHP is compared to a standard heat pump in terms of installation, a HTHP may be less problematic and quicker. Radiator and pipework compatibility means the HTHP can operate smoothly once installed.
Rinnai R290 high-temperature air source heat pumps (ASHP) are ideal for DHW and heating projects. The R290 commercial air source heat pump is a low-global warming potential (GWP) heat pump that offers advanced controls, and can be cascaded for greater heating and DHW output.
Rinnai’s R290 high-temperature heat pumps supply hot water up to 75°C, ensuring system and design flexibility.
The Rinnai range of heat pump technology comes with a smart control system that features demand side response functionality that further futureproofs sustainability. All R290 models have low noise capability, making them suitable for areas with prohibitive sound legislation. Rinnai’s ASHPs use R290 natural refrigerant gas which has a GWP of three, ensuring that the Rinnai R290 range is a sustainable and futureproof heating and DHW solution.
The range has a SCoP of A+++ due to the increased efficiency achievable with the use of R290 refrigerant gas, meaning that the Rinnai range of high-temperature heat pumps is one of the most cost-effective and economical heating solutions available.
Rinnai also offer a range of products across several technological platforms and energies. Rinnai hybrid heat pump systems can accept clean electricity, natural gas and solar thermal. Rinnai Smart System can be programmed to switch fuels to maximise overall performance.
www.rinnai-uk.co.uk