Publication Date:
2019
Description:
〈p〉Publication date: February 2020〈/p〉
〈p〉〈b〉Source:〈/b〉 Renewable Energy, Volume 146〈/p〉
〈p〉Author(s): K.R. Arun, M. Srinivas, C.A. Saleel, S. Jayaraj〈/p〉
〈div xml:lang="en"〉
〈h5〉Abstract〈/h5〉
〈div〉〈p〉In this work, an outdoor experimental analysis is conducted to determine the impact on the useful heat gain when discrete cylindrical energy storage units are directly integrated into the solar collector. The collector has a double-pass airflow channel pathway, and the storage is intended to serve only for a short-term. The location of storage inside the collector is always a major concern. This study seeks to determine whether the thermodynamic performance of the system is effective by the location of cylindrical energy storage (paraffin wax) capsules on the upper or the lower airflow channel pathway. The obtained results suggest that due to asymmetric channel depth, the thermodynamic performance of the collector was not greatly influenced by the placement of capsules, unlike with symmetric channel depths. The amount of useful heat gain when storage was placed in the upper (Case A) and lower (Case B) airflow pathways was 0.35 kW and 0.4 kW. For Case A and Case B, the average collector thermal efficiency was 62.9% and 73.7%, and the exergy efficiency was 44.3% and 47.5%. The energy payback time for the collector based on energy calculations is nine months, and that on exergy analysis is 34 months and 20 days.〈/p〉〈/div〉
〈/div〉
Print ISSN:
0960-1481
Electronic ISSN:
1879-0682
Topics:
Energy, Environment Protection, Nuclear Power Engineering
