The performance of the FPC (flat-plate collector) increase its ability to convert the solar energy into heat, for an optimum performances it is necessary to minimize the heat losses which increase with the temperature of the collector, have a good quality of the materials (including insulation), also have a good heat transfer between the absorber and the heat transfer fluid (water); and at the end refer to the weather conditions (sunshine, wind velocity, temperature...). In this paper we will study new approach to improve the productivity of a FPC by using a mono-axial tracker, a prediction study will be done to compare a fixed model in south orientation with a model with a mono-axial tracker, at the end a series of experimental tests will be held for the two systems aiming their comparison and rated the radiation projected onto the flat surface of the two collectors, and further to thermal measure their productivity over time along the day.

Conducting energy audits is pivotal in assessing industrial plant efficiency and formulating effective energy management plans. It identifies opportunities for efficient energy use, reducing costs and environmental impact. This study employs a techno-economic approach to analyze electricity cost reduction in an industrial facility. Through energy auditing, it explores economic benefits and improved energy quality, yielding favorable outcomes. Focused on a plastic derivative manufacturing plant, the study reveals critical audit findings. The main aim is to identify avenues for electric energy savings, cutting production costs, and enhancing product competitiveness. The audit involves a detailed analysis of consumption patterns, signal quality, and potential energy management strategies, culminating in a cost-cutting plan. The results of an economic assessment of the suggested energy-saving strategies, provide a comprehensive evaluation of their financial implications. It reveals significant cost reduction opportunities, estimating annual energy savings of $45,824.56, which represents a 23.68% decrease in expenses. These initiatives not only boost the plant's financial performance but also strengthen its competitive edge.