Influence of structure parameters on performance of low-temperature exhaust steam recovery device

An experiment was conducted to investigate the influence of structure parameters on the performance of a low-temperature waste steam recovery device (WSRD), such as the contract angle, the area ratio of the throat to the water spout, and the area ratio of steam nozzle to water nozzle. The experimental result shows that there is an optimum area ratio of steam nozzle to water nozzle, leading to the optimal performance of WSRD, but the optimum area ratio is different when the inlet fluid parameters are not the same. Moreover, the entrainment ratio increases with the increase in the area ratio of the throat to the water spout (1-5.44) while the resistance coefficient decreases at first and then increases. The entrainment ratio decreases while the resistance coefficient increases with the increase in the contract angle (14°-22.7°).