Page 136 - Towards A Sustainable Future 2024

Figure 12: Internal dryer temperature inter with and without
Figure 11: Dryer external temperature during a drying a clothing load.
operation.
Time-profile of drying outlet temperature
The results measurements are the temperature increment
of about 2 ⁰C to the surrounding air temperature during Figure 13 shows the temperature profile of the drying air
the clothes drying cycle. This observation highlights the outlet temperature from the dryer over a drying cycle with
importance of managing temperature fluctuations within and without a clothes load. Hot air for drying is supplied
the launderette. by the burner located at the rear of the dryer. This hot air
removes moisture from the laundry through direct contact
with clothing items inside the dryer. The temperature profile
Figure 12 shows the temperature of the dryer glass cover in Figure 13provides insight into the dynamic behaviour
during the clothes drying process, with and without a loading of the drying process and aids our understanding of the
of clothes. Results show that when the dryer is loaded, the thermal characteristics of moisture removal during the
temperature inside the dryer, as indicated by the cover glass laundry drying process.
temperature, is higher than when it was operated empty.
This phenomenon occurs as hot air can enter and leave the
dryer more freely without resistance from the presence of
clothing. These observations show the impact of clothing
load on internal dryer temperature dynamics, and highlights
the importance of optimising the dryer load capacity for
energy efficiency.

Figure 13: Temperature profile of the dryer hot-air outlet.

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