A Study on the Improvement of the Spraying Performance of a Washing System That Sprays High Temperature and High-Pressure Hot Water

Abstract

In this study, a high temperature high pressure washing system for energy saving in which the exhaust gas at 543 K that escapes from the furnace after heating cold water introduced into the boiler is recovered through a heat exchanger to dramatically reduce the exhaust gas temperature was developed. In addition, an experimental system was configured with a low-pressure boiler, a driving motor, a high pressure pump, a spray nozzle, and a hot water pressure, temperature, and flow rate control system. In addition, an experimental system for the performance of a washing system that sprays high temperature and high-pressure hot water was configured to produce performance experiment results. In addition, in this study, the results of development of a low temperature boiler system and a high temperature high pressure pump that can be used at high temperatures were applied to derive study findings that can reduce the load of the boiler per se required in existing systems due to the durability required to high pressure boilers. Since the washing system developed in this study is based on energy recovery, the study findings can maximize efficiency more than existing technologies thereby greatly contributing to energy saving. The thermal efficiency of the high pressure washing system was enhanced by installing an exhaust gas waste heat recovery system at the exit of the exhaust gas of the system to recover the waste heat of the exhaust gas and using the waste heat to pre-heat the combustion air before being supplied. Consequently, the amount of lamp oil used by the high-pressure washing system was reduced so that energy saving was implemented.