%0 Journal Article %T A review on passive methods for thermal performance enhancement in parabolic trough solar collectors %A Sharma, Mridul %A Jilte, Ravindra %J International Journal of Energy Research %V 45 %N 4 %P 4932-4966 %@ 0363-907X %D 2021-03-25 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve