• Said H. Kapungu (Eng)
• Profesor C.T. Mgonja
• Rashid M. Mkemai (PhD)

The development of the online chiller maintenance management system for energy saving at Songas Limited becoming of vital thing. The paper explains the problem that resulted into loss of about 5MW from the total Megawatts required to be generated in the Grid, the loss that led to increasing of power rationing in power system of Tanzania. The paper intends to develop online chiller maintenance management system for energy saving at Songas Limited. The established factors were Maintenance policy, Materials control, Work order system, Job planning and scheduling, organization and human resources, reliability, and effective maintenance management system. The approved model was done by partitioning the collected information that were isolated into two parts and the results of the coefficient of determination R2 is 87.2% for the model development and R2 is 84.3% for validation data. Second specific objective was to develop an appropriate model for making chiller equipment. The analysis of data was conducted using Statistical Package for the social sciences (SPSS). The results appeared that, R2 was 87.2% and the Durbin Watson was 2.401, which was between 1.5 and 2.5. The Pressure (P) estimated was between the agreeable margins. Therefore, the variables were found to be valid and reliable for the model and to predict the reliability of the chiller equipment. The system developed is capable to perform the online gas leakage status by monitoring the evaporator approach temperature. Evaporator Approach temperature should not exceed 5oC provided that all condenser fins are free from foulants for maintaining the required Evaporator Gas pressure (EVP), otherwise, there is a gas leakage on low pressure side. However, leakages and cooling fan that resulting into higher-than-normal condenser temperature should be fixed in advances. To ensure online cleaning performs and operate within the required Condenser Gas Temperature (CGT), the water tank should be filled with water all the time. This system may be applied to all air-cooling condenser chiller found in area like Songas limited.

Songas Limited, Grid System (GS), online chiller maintenance management system, Evaporator Gas pressure (EVP), Durbin Watson, Condenser Gas Temperature (CGT), Approach temperature

"Development of Online Chiller Maintenance Management System for Energy Saving", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 1, page no.d874-d886, January-2023, Available :http://www.jetir.org/papers/JETIR2301408.pdf

"Development of Online Chiller Maintenance Management System for Energy Saving", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 1, page no. ppd874-d886, January-2023, Available at : http://www.jetir.org/papers/JETIR2301408.pdf