The Impact of Thermal Storage Materials on the Heating and Storage Efficiencies of a Solar Air Heater
- Author Miqdam T Chaichan
- Co-Author Khaleel I Abass, Hussein A Kazem
- DOI
- Country : Iraq
- Subject : Solar air heating
Keywords : Solar air heater, Paraffin wax, PCM, Heating efficiency, Storage efficiency
Abstract
In this study, two air heaters were designed and manufactured from locally available materials. Two cases of storage were studied: The first case used concrete as the main part of the air heater and depends on the sensible heat stored in the concrete. In the second case: Paraffin wax was added as PCM to concrete, which was considered the main part of the air heater. In the second case, the effect of the underlying heat storage will be studied with the calculated output heat from the heater. Practical experiments were conducted on the air heaters in the winter conditions of the city of Baghdad - Iraq for the period during the months of January and February 2018.
The results of the study showed that the temperature of the air outside the heater increased significantly for the second case (addition of the paraffin wax) compared to the first case (use of concrete only). The efficiency of the system has also improved and the maximum storage efficiency has increased to 54.13% compared to the first condition. In the second case, air temperature increased to a maximum of 54.97% when the heater was installed in February.
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