ISSN Online: 2688-7231
ISBN Online: 978-1-56700-478-6
HEAT LOSS FROM CYLINDERICAL CAVITY RECEIVER IN SOLAR PARABOLIC DISH SYSTEM: A REVIEW
ABSTRAKT
The convective heat loss from cavity receiver in parabolic
dish system is the main parameter to determine the thermal
performance and cost effectiveness of the system. The main
difficulty of designing the cavity receiver is determining the
convection heat loss. In recent years, exhaustive numerical
and experimental investigation has been done on natural
convection with varying cavity shapes. Combined natural and forced convection testing as well as experimental investigations on cylindrical model receivers with constant
heat flux boundary condition has also been carried out. The
recent studies related to natural convection/combined natural and forced convection with constant heat flux boundary condition may provide more accurate and valuable information for the solar receiver design, which had, in earlier cases, been ignored by solar collector system designers.
This paper presents a comprehensive review and systematic
summarization of the different convection correlations
developed by several authors to model convective heat
losses from cylindrical cavity receivers and progress in
recent years. This paper has covered the early models, the
new modified models that were subsequently developed and
the recent models, which are considered to be more accurate in estimating convection heat loss.
The main aim of this paper is to compare the correlation
developed by several authors to estimate heat losses from
cylindrical cavity receiver in recent years. Finally, future
development directions and the issues that need to be further
investigated in detail are also suggested. It is believed that
this comprehensive and systematic review will be beneficial
to the designer for experimental investigation, simulation,
and correct convection heat loss estimation of the solar
cavity receiver to improve the thermal performance of a
solar parabolic dish-receiver system.