International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 08 Issue: 03 | Mar 2021 www.irjet.net p-ISSN: 2395-0072 © 2021, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 1829 Design of Peltier Operated Dehumidifier Ankeet Aswale 1 , Rutuja Yerawar 2 , Tejas Dongre 3 , Prof. N.J.Giradkar 4 , Prof. V.M.Korde 5 1,2,3 BE Student 4,5 Professor 1,2,3,4,5 Department of Mechanical Engineering 1,2,3,4,5 Yeshwantrao Chavan College of Engineering, Nagpur, India ----------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - Humidification and dehumidification of air (air conditioning) is mainly concerned with the following variables of human comfort, relative humidity, temperature and air quality. Evaporative coolers and air conditioner are expensive and to a great extent are insufficient in humid condition. In addition to that they have adverse impact on our environment. As the debate on climate change is expanding day by day. So, it is the need of an hour to find an efficient and eco-friendly way of air conditioning. Here the aim is to develop an peltier operated dehumidifier to achieve the dehumidification and sensible Cooling. The design is mainly for testing the performance of peltier for household indoor cooling application. The design is expected to provide a good alternative to air conditioners which consume high power and has quite high initial cost. Key Words: Peltier, Heat sink, Air conditioner, Dehumidifiers, Evaporator cooler. 1. INTRODUCTION Everybody in his life wants comfort. Comfort of different types like physical, mental comfort. Like this there is another known as thermal comfort which is the condition in which the mind expresses satisfaction with the thermal environment (temperature, moisture). The main goal of air conditioning is to maintain this standard of thermal condition (T=25°C, relative humidity=50%) for the people of household. The two main variables that are taken into consideration while evaluating thermal comfort are ambient temperature and relative humidity. The range of relative humidity for comfort condition may vary from 45 to 55%. Normally we can use ceiling or table fan when we feel hot in summer which is an affordable option to get rid of the discomfort caused by the temperature rise in summer, but this becomes ineffective as the temperature rises. As the temperature increase the temperature of the blades as wells as atmospheric temperature increases causing it to blow hot air. There are Many safety concerns present with respect to table fan that’s why it has safety rings for protection and as the blade attracts the dust causing it to blow impure air. Along with this we have different alternatives available which can help in summer like air conditioners, Evaporative coolers which can help to attain the comfort condition but are expensive, ineffective in humid condition and hazardous to environment. So, to overcome all these drawbacks we made an attempt to build a dehumidification system which will help us to achieve thermal comfort. This dehumidifier will reduce air temperature and help to regulate relative humidity. In this we are using a peltier Module in place of coolant, along with peltier the other main components are dc fans, heat sink. The Peltier Module works on principle of peltier effect. The effect creates a temperature difference by transferring heat between two electrical junctions. A voltage is applied across joined conductors to create an electric current. When the current flows through the junctions of the two conductors, heat is removed at one junction and cooling occurs. Heat is deposited at the other junction.This project aims inexpensive, reliable and provide an eco-friendly way to deal with hot summer. This project focuses on providing thermal comfort at minimal cost. 2. LITERATURE REVIEW [1]Kadhim K. Idan Al-Chlaihawi (An Experimental and Theoretical Study of Forced Convection from a Peltier Thermoelectric Cooling):In this paper an experimental study of heat transfer through thermoelectric cooling system is presented. An experimentation was conducted for evaluating the performance of a thermoelectric module fitted to a sunflower heat sink with a similar sized heat source. The experimental investigation was done for evaluation of the effects of various performance parameters such as TE input voltage, flow rates of cooling air and heat source(heating element) Power input on the performance of a TE cooling system. In this experimentation they used Four low heating load (1.7, 2.4, 3.6 and 5 W) and fitted their hot sides to a sunflower type heat sink having forced convection. The results showed that the system performance improves with increasing air flow