Year: 2024
Type: article
Abstract: Since people spend around 90 % of their daytime in buildings, the energy demand in buildings to maintain thermal comfort is remarkable.By developing a decentralized air handling unit (AHU), equipped with a R290 heat pump, it is targeted to reduce the installation time in buildings and the CO2 emissions for air conditioning.To integrate decentralized AHU with heat pumps in residential or non-residential buildings, these must be carefully designed in advance to get the highest efficiency.The development process considers a wide range of aspects, including energy demand, component design and acoustics.The simulation results in a total heating load of 1080 W. The load is distributed in 500 W of the sensible heat in the energy recovery system, 500 W through the condenser of the heat pump and 80 W through the electric air pre-heater for frost protection.After design and component selection, the decentralized AHU was built up as a demonstrator.The comparison of simulation and experiments prove the validity of virtual pre-development by showing a maximum deviation of 5 % in the heat flow of all components in heating mode by using constant efficiency models.
Authors: Tobias Fröhlingsdorf, Martin Kremer, Dirk Müller
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7113908700
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