International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 06 | Jun 2023
p-ISSN: 2395-0072
www.irjet.net
DESIGN AND DEVELOPMENT OF SOLAR WATER HEATING SYSTEM USING PHASE CHANGE MATERIAL Vedant V. Aher1, Darshan D. Gawas1, Divya M. Dhamal1, Dr. Sunil R. Patil2 1 U.G. Student, Dept. of Mechanical Engineering, AISSMS COE, Pune, India
2 Assistant Professor, Dept. of Mechanical Engineering, AISSMS COE, Pune, India
---------------------------------------------------------------------***--------------------------------------------------------------------1.1 OBJECTIVES Abstract - Solar energy is readily available almost all year long and can be used to generate electricity and heat. Over time, interest of public and government in solar energy has skyrocketed. However, it has the drawback of not producing as intended during off-seasons. A useful method of storing thermal energy that offers the benefit of high energy storage density and isothermal storage is by the usage of a latent heat storage system with PCM. Energy is stored using PCM, which is then used to heat water for domestic usage at night. This makes sure that hot water is accessible all day long. This system consists of solar water heating setup along with a PCM based tube in shell heat exchanger is designed in this work which will be integrated with solar water heating system.
1.2 SCOPE This work includes, design and development of a small heat exchanger, in order to establish the effectiveness of using paraffin wax as a suitable PCM in solar water heating system. The paraffin wax is incorporated in the heat exchanger, which acts as thermal energy storage device.
Key Words: Phase Change Material (PCM), Solar Water Heater, Thermal Energy Storage System, Heat Transfer Fluid
2. SELECTION CRITERIA FOR PCM
1.INTRODUCTION
The selection of PCM is crucial for solar thermal energy storage. There are different ways to classify PCMs such as phase change temperature, material properties etc. Common factors during the selection of PCMs include: thermodynamic properties, kinetic properties, chemical properties and economic properties. The normal paraffins of type CnH2n+2 is a family of saturated hydrocarbons with very similar properties. Paraffins between C5 and C15 are liquids, and the rest are waxy solids. Paraffin wax is used widely in commercial organic heat storage PCM. It contains of straight chain hydrocarbons which have melting temperature from 23° to 67°C. Paraffin wax is chosen due to its no tendency to segregate, stable properties after 1500 cycles and affordability. The effects of super-cooling during the crystallization can be dealt with by means of adding a nucleating agent.
The main driving cause behind efforts to more effectively utilize different renewable energy sources are the continual rise in greenhouse gas emissions and the rise in fuel prices. Direct solar radiation is regarded as one of the most promising energy sources in many parts of the world. Researchers are looking for novel, sustainable energy sources all across the world [1, 2]. A current difficulty for technologists is the storage of energy in acceptable forms that can be traditionally converted into the needed form [3]. Energy storage plays a significant role in energy conservation by lowering the imbalance between supply and demand as well as enhancing the efficiency and dependability of energy systems [4]. A useful method of storing thermal energy that offers the benefits of high energy storage density and isothermal storage is the usage of a latent heat storage system that uses PCMs. Fully refined paraffin wax is used in the system [5]. PCMs are frequently used in latent heat thermal storage system for solar engineering, spacecraft thermal control applications and heat pumps. PCM applications for building heating and cooling have been studied within the last ten years. PCMs are appealing in a variety of applications due to they are abundant and can melt and solidify at a wide range of temperatures [6].
© 2023, IRJET
|
To design a cheap and easy to integrate energy storage system for solar water heating system. To study and select optimum PCM for the system. To Fabricate a scale model of the solar water heating setup with PCM.
Impact Factor value: 8.226
|
ISO 9001:2008 Certified Journal
|
Page 649