COMMERCIAL HEATING
www.heatingandventilating.net E
very right-thinking person knows that ignoring the climate emergency is simply not an option. Doing so would result in the only liveable
planet we have becoming more uncomfortable, if not impossible, for humans to inhabit. But helping to save the planet is not the only
responsibility that we, as the HVAC sector, have. We must also provide the means to supply fresh air to our indoor environment in order to ensure the health and wellbeing of building occupants. As well as limiting the spread of diseases such as COVID, this also helps to maintain concentration, productivity and wellness. To achieve our climate goals and ensure the sustainability of our built environment, it is imperative that we integrate advanced climate control solutions that not only address heating and cooling needs but also ensure optimal air quality within buildings. This holistic approach is crucial to enhance climate resilience, boost comfort levels, and reduce the overall carbon footprint of our structures. Climate control solutions that can achieve this include polyvalent heat pumps, ultra- effi cient chillers, and fully packaged air handling units, often used in combination. Indeed, there is a growing trend for total climate
It pays to adopt an all-embracing approach to climate control
There is a growing trend in the HVAC sector for total climate control solutions that tackle heating, cooling and air quality at the same time. This approach is particularly important for climate resilience and the welfare of building occupants, says Andrew Latus, regional sales manager and air handling unit product manager at Klima-Therm
solutions that tackle heating, cooling, and air quality at the same time, employing products like these. The most important objective when employing this all-inclusive approach is to recover as much energy as possible from the building. We have, for example, developed a system
installed at 41 Lothbury Grade II offi ce refurbishment in the heart of London where packaged air handling units (AHUs) are doing most of the work. The heat recovery* employs an arrangement that is very similar to a runaround coil system, but it is boosted by a water source heat pump.
Total climate control explained A
total climate control solution provides thermal control of the indoor environment (heating, cooling, and
air quality) using strategies and technology that mitigate climate change and improve comfort conditions. That means harnessing the combined benefi ts of: • High effi ciency chillers that provide cooling with reduced power consumption such as Turbocor compressors or absorption chillers using waste heat. • Polyvalent or four-pipe chillers that recover the heat energy absorbed when cooling a building or process and re-purpose thermal energy as heating to provide on-demand thermal output. • Fully packaged heat pump AHUs that provide an all-electric thermal output to maintain the indoor building environment with conditioned fresh air for summer and winter. • Innovative heat recovery solutions that re- purpose the exhaust air from a building to provide conditioned fresh air to maintain high air quality and comfort.
It also involves strategies that do not require the burning of fossils such as: • Polyvalent heat pumps – due to the all-electric thermal production. • Fully packaged heat pump AHUs – all-electric thermal fresh air production and processing whilst maximising energy effi ciency due to all air heat recovery. • High effi ciency heat recovery systems such as the boosted runaround coil system to eliminate the need for external thermal input for new and retrofi t in existing buildings. • Technologies using renewable electricity from solar panels and wind farms.
*Heat recovery CPD To gain a clearer understanding of Klima Therm’s approach to heat recovery, there is a CPD available that describes the methodology in detail and will provide designers and building owners with the knowledge to deploy the solution in existing and new buildings. Contact
andrew.latus@klima-
therm.co.uk for details.
The water source heat pump provides
fl exibility in the water temperatures to each heat exchanger, which in turn allows energy recovery to be maximised. This means in summer we can dissipate the absorbed heat from cooling the supply air via the extract by releasing it to atmosphere. In winter, we can absorb both the sensible and latent heat from the extract air to provide suffi cient thermal energy to heat the conditioned space without additional thermal input from a boiler or air source heat pump. Adopting this technological combination
approach saves energy, reduces the carbon footprint of the building, and allows us to use plant in diff erent areas. For example, at 41 Lothbury, space constraints dictated that the extract AHU is installed on the roof and the supply AHU is in the basement, which would make traditional heat recovery methods impossible, but the use of a boosted runaround coil heat recovery system provided a high effi ciency solution. When the supply and extract AHUs are in close
proximity, a DX based refrigeration system can be employed, or the boosted runaround coil heat recovery system when the supply and extract are in disparate locations or exceptional high heat recovery options are required.
16 March 2025
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