2016 : Numerical studies on the effect of delta-shaped obstacles' spacing on the heat transfer and pressure drop in v-corrugated channel of solar air heater

Prof. Dr. Ir. Djatmiko Ichsani M.Eng
Prof. Ir. Sutardi M.Eng., PhD.
Prof.Dr.Ir. Prabowo , M.Eng.


Abstract

Solar air heater (SAH) is simple in construction compared to solar water heater. Yet, it is very useful for drying or space heating. Unfortunately, the convective heat transfer between the absorber plate and the air inside the solar air heater is rather low. Some researchers reported that obstacles are able to enhance the heat transfer in a flat plate solar air collector and others found that a v-corrugated absorber plate gives better heat transfer than a flat plate. Only a few research combines these two in a SAH. This paper will describe the combination from other point of view, i.e. the spacing between obstacles. Its spacing possibly will effect the heat transfer and pressure drop of the air flowing across the channel.The first step in numerical study is generating mesh or grid of the air flow inside a v-corrugated channel which was blocked by some delta-shaped obstacles. The mesh was designed three-dimension and not …