Prof. Dr. Abdul Aziz Zagir Salman who is a lecturer at the Center for Energy Technology and Renewable Energies at the University of Technology has published a research paper at the Journal of energy technology
 Entitled: Study of a new type of solar water heater
 Where the researcher propose a new type of solar water heater. Where the separate glass tubes were used instead of the integrated thermal tubes. The actual area of the solar complex exposed to solar radiation was about 2.96m2, which included 20 glass tubes with a 120 liter water tank as main parts.
 The research included three axes:
 First, conduct the thermal performance test of the new complex in November 2014. After the daily test from 9 am to 4 pm, the maximum efficiency of the compound could be as high as 66% while the temperature of the reservoir water increased by about 25 ° C at the end of the day.
 Theoretical analysis was performed on the equilibrium of energy for each part of the complex to understand the steps of the heat transfer process within the complex.
 Third, heat transfer models were developed to calculate the efficiency of the collector, water temperature, glass tubes, absorption plate, and parents. The difference between theoretical and practical results is due to the great loss of heat during the experiment through the examination apparatus.