The productivity and the performance of the solar still by using of wicked absorber sheet have been measured and compared with the conventional absorber sheet.the efficiency of encryption. Also the time of encryption in the case ofJPEG and BMP image was measured for a number of selected imagesthat are different in their size. Finally, a measure for the quality ofencryption was introduced and applied to each case.The performance results of the application of DES on images saved inBMP or JPEG format have been shown in graphical forms. Also theresults of measuring the mean square error between the original imageand the decrypted image were documented in tabular and graphicalforms. In addition the results of measuring the encryption tune of imagesin each of the two cases are presented in tabular forms for a selectedgroup of images. Finally the results of measuring the quality ofencryption in each case were presented in histograms and plotted curves.The software used for implementing DES and its application on the bothJPEG and BMP images and making the comparison study is written inC++, it was performed on a 400 Mllz Fentium II PC machine with 32megabytes main memory, running on Windows 98. All programs wereimplemented in Microsoft/visual C ++6.0. The Paint Shop Pro version 7was used to display the encrypted image and decrypted one, and toextract the difference image.