Evaporation Condensation Heat And Mass Transfer And Application

In this article, on the basis of evaporation & condensation principle, a research on the heat and mass transfer of liquid dehumidification and seawater desalination was developed. In the experimental study of liquid dehumidification, a new mixture solution of zinc chloride and calcium chloride at a mole proportion of 1:1 was selected as an desiccant in desiccant dehumidification and air-conditioning system, the results show that this new desiccant has a high dehumidify capability. A study on Energy storage for desiccant cooling system was carried out. Liquid desiccant cooling systems are suitable for energy storage and it has the same effect as ice storage air conditioning system.TRNSYS computer simulation software is capable of simulating solar energy system. A improved TRNSYS program was used to simulate a simple flat-plate solar water heater and flat-plate water heaters with tank. The results indicate that the heat-bump water heaters have a more consistent heat delivery capacity.On the application of evaporation & condensation, a new open cycle solar still, which is configured mainly by one kind of falling film evaporator, condenser, solar collector and some auxiliary devices, is proposed. Parameters affecting system performance, i.e., temperatures and flow rates of moist air, seawater, and cooling water, are analyzed numerically and experimentally. Furthermore, analysis on thermal cycle of the system is made. It is shown that there is an optimum flow rate of air under given inlet temperature and flow rate of seawater. The comparison between simulation result and experimental result are also put forward in this article.