INGENIEUR
INGENIEUR
Figure 6 : The calculation of cooling tower session window ( value inserted )
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An expert system for fault diagnosis for gear boxes in wind turbines ( Ling et al ., 2012 )
An expert system called Kappa-PC Software has been used to provide a standardised methodological approach for solving important and complex problems normally done by human experts ( Terry , 1995 ). Kappa-PC is a knowledge based expert system shell that helps in developing an expert system ( Mansyur et al ., 2013 ). The main menu of the developed Kappa-PC system is shown in Figure 3 . The main purpose of the developed expert system is to give a solution and recommendation to the person in charge when experts are not around . The system will generate friendly prompts according to the user data . Friendly prompts will be shown as advice to the user on how to tackle problems in the current situation . The recommendation prompts can give optimal advice on what to do in the next following steps or propose to send back to factory for service in a worst case scenario . Figure 4 shows a fault diagnosis expert system for an Air Handling Unit ( AHU ). Figure 5 shows a Water Cooled Packed Unit ( WCPU ) in an AHU room .
Figure 6 shows a developed expert system to calculate a cooling tower ’ s total loss which consists of evaporation loss , drift loss , blow down loss and total loss . By identifying the values needed to obtain the total loss of a cooling tower in a building , the system acts as a platform to identify the working condition of the cooling tower as well as the alarm alert system . The algorithm input in Figure 6 can identify whether the cooling tower system is running ideally or over-designed by comparing the total loss with the design specifications .
Summary
In conclusion , an expert system is an artificial intelligence programme that is able to carry out diagnoses , interpretation , design , prediction and others useful activities to assist human experts . An expert system for air handling units has been developed by using Kappa-PC software . This can help technicians or engineers with a lack of knowledge and experience by providing them with the correct information and solution .
74 VOL 74 APRIL-JUNE 2018