Fluidized　bed　heat　exchanger　(FBHx)　units　have　significant　applications　in　various　industrial　processes.　Heat　transfer　coefficient,　pressure　drop　and　superficial　gas　velocity　are　the　most　salient　parameters　used　to　characterize　the　behavior　of　solid　particles　in　FBHx.　This　research　identifies　the　pressure　drop　and　surface　heat　transfer　coefficient　of　Alumina,　coal-char　and　bio-char　solids　in　FBHx.　The　pressure　drop　and　heat　transfer　coefficient　were　estimated　at　fixed　bed　height　of　6cm　by　maintaining　air　flow　rate　of　8-100　Liters　per　minute　(LPM).　Digital　temperature　sensors　are　used　to　measure　the　bed　temperature,　air　inlet　temperature,　and　heater　surface　temperature.　The　results　of　this　study　suggest　that　the　effects　on　pressure　drop　and　surface　heat　transfer　coefficient　in　FBHx　are　influenced　by　bed　materials.　Among　the　tested　materials,　pressure　drop　and　heat　transfer　coefficient　were　found　of　order　Alumina＞coal-char＞bio-char.　©　2018　Institute　of　Physics　Publishing.　All　rights　reserved.