Wall-to-Suspension Heat Transfer in a CFB Downcomer

Figure 3

Layout of the experimental setup: riser 50 mm ID, HE Stairmand cyclone, downcomer 100 mm ID, -valve 50 mm ID, air from speed-controlled blower, compressed air, vent to baghouse filter, coaxial heating section, coaxial cooling section, supply of thermal fluid, supply of cooling water, and discharge valve. , ,   , and : respectively, flow meters of thermal fluid, cooling water, riser air, and -valve air; : temperature probes for respective fluids; : temperature probes inside riser and downcomer; : differential pressure probes. solids circulation flow pattern.