This abstract explores the promising integration of Phase Change Materials (PCMs) into refrigerants to revolutionize the efficiency and sustainability of cooling systems. The traditional refrigeration process relies heavily on the energy-intensive compression and expansion of gases. However, by incorporating PCMs, which undergo reversible phase transitions between solid and liquid states at specific temperatures, we can significantly enhance energy efficiency and reduce the environmental footprint of cooling technologies. The utilization of PCMs in refrigerants offers several advantages. First, it enables the storage and release of thermal energy during phase transitions, leading to improved temperature regulation and reduced energy consumption. Second, PCMs can extend the duration of cooling even during power outages, enhancing the reliability of refrigeration systems.
Objectives
The project aims to revolutionize refrigeration technology by applying PCM, contributing to energy efficiency, environmental sustainability, and enhanced cold storage capabilities. PCM has the potential to significantly improve cold storage capabilities by leveraging its latent heat properties. Successful implementation will lead to a market ready PCM refrigerator with wildspread.
Socio-Economic Benefit
Applying PCM in refrigerator reduces compressor workload, saving energy and lowering electricity bills. By utilizing PCMs to store cooling energy, refrigerators can operate more efficiently, leading to lower electricity bills for consumers. The reduced energy consumption translates directly into cost savings over the lifespan of the refrigerator. This benefit is particularly significant in regions with high electricity costs or where energy efficiency standards are enforced, as consumers can enjoy long-term financial savings. PCM buffering minimizes temperature fluctuations, reducing food spoilage and economic losses. By reducing the workload on the compressor and minimizing temperature fluctuations, the use of PCMs can contribute to the longevity of refrigerators. Extended lifespan means fewer replacements over time, reducing both financial costs for consumers and the environmental impact associated with manufacturing and disposing of appliances. Energy efficient refrigerationsystems contribute to a reduction in greenhouse gas emissions and environmental footprint. By decreasing electricity consumption, the use of PCMs in refrigerators helps mitigate the environmental impact associated with electricity generation, especially in regions where fossil fuels dominate the energy mix.
Methodologies
In this experiment, we investigated the thermal performance of paraffin wax, stearic acid, and palmitic acid as phase change materials (PCM) with a refrigerator condenser, employing an Arduino-based temperature monitoring system. The PCM samples were encapsulated in aluminum foil to facilitate uniform heat transfer, with temperature sensors strategically placed on the condenser surface and within the PCM. After activating the PCM, temperature data was collected at intervals to analyze heat transfer dynamics. Comparative analysis between the three PCM types and assessment of aluminum foil's impact on heat transfer efficiency were conducted. Safety precautions were observed throughout the experiment.
Outcome
Up to 10 to 15% increase in efficiency.
Increase compressor off time up to 30 minutes.
Decrement of 10 degrees in condenser temperature.
Cost saving up to 33% with decrement of 0.9kwh per day in electric load.
