Investigation of water desalination, nanotechnology in medicine and agriculture, high performance nanomaterials in solar desalination

Most of the desalination systems are energy intensive, which consume high grade energy like gas, electricity, oil and fossil fuels. These processes lead to carbon footprints, which causes depletion of ozone layer as well as health hazards on mankind. It is also lead to global warming which is the burning topic and becomes threat to life sustainability. The potential of harnessing solar energy is most efficient and effective for heat to heat conversion. The thermal desalination is a low temperature application processes with one time investment for life time water production up to ۱۰ to ۱۵ years. In this paper, various solar thermal desalination methods such as direct and indirect methods have been discussed.Applications of nanotechnology typically include industrial, pharmaceutical, and energy applications. These include more durable building materials, therapeutic drug delivery, and more environmentally friendly hydrogen fuel cells. Because nanoparticles and nanoparticles are so diverse through changes in their physicochemical properties, they have found applications in nanoscale electronics, cancer treatments, vaccines, hydrogen fuel cells, and nano-graphene batteries. The use of nanotechnology of smaller materials allows the adjustment of molecules and materials at the nanoscale level, which can further enhance the mechanical properties of the material or access areas that are less physically accessible in the body. Energy and global warming crises There has been a great deal of interest in the use of air conditioning coolers using renewable thermal energy. From air conditioning and chiller cooling systems (using renewable energy ) Can be used for energy supply systems in the building to reduce energy costs. The operation of an air conditioner is similar to the operation of the evaporator. What makes it different is the type of cooling it uses. An air conditioner is a heat exchanger used to cool or dehumidify air. There are three types of chillers. Condensed air, condensed water and evaporated condensed. Therefore, these chillers, which have a wide range of applications, play an important role in science, technology and industrial studies. Slowly Criteria for increasing the energy rating of chiller systems are proposed. The issue of energy in our country has not been given due attention for years, and overt and covert government subsidies have always prevented people from paying real attention to the value of energy. In recent years, paying attention to the amount of energy consumption and also saving on consumption has emerged as a definite and unavoidable necessity