BY

SURESH.R (16705A0426)

B TECH II Year I Sem

ELECTRONICS & COMMUNICATION ENGINEERING

ANNAMACHARYA INSTITUTE OF TECHNOLOGY AND SCIENCES(AN AUTONOMOUS INSTITUTION)

(Approved by AICTE,NEW DELHI & Affiliated to J.N.T.U Anantapuramu)New Boyanapalli, RAJAMPET-516 126 (A.P)

A Technical seminor

OnSOLAR & RECHARGEABLE AIR COOLER

• INTRODUCTION

• BLOCK DIAGRAM

• SOLAR PANEL

• CHARGER CIRCUIT

• CIRCUIT DIAGRAM

• MOTOR & PUMP

• BATTERY

• ADVANTAGES & DISADVANTAGES

• APPLICATIONS

• CONCLUSION

CONTENTS

INTRODUCTION

This paper reveals the comfort conditions achieved by the device for the human body. In summer (hot) and humid conditions we feel uncomfortable because of hot weather and heavy humidity. So it is necessary to maintain thermal comfort conditions. Thermal comfort is determined by the room’s temperature, humidity and air speed. Radiant heat (hot surfaces) or radiant heat loss (cold surfaces) are also important factors for thermal comfort. Relative humidity (RH) is a measure of the moisture in the air, compared to the potential saturation level. Warmer air can hold more moisture. When you approach 100% humidity, the air moisture condenses this is called the dew point. The temperature in a building is based on the outside temperature and sun loading plus whatever heating or cooling is added by the HVAC or other heating and cooling sources. Room occupants also add heat to the room since the normal body temperature is much higher than the room temperature. Need of such a source which is abundantly available in nature, which does not impose any bad effects on earth. There is only one thing which can come up with these all problems is solar energy.

BLOCK DIAGRAM

SOLAR (or)

CHARGER

INDICATOR

CHARGING SWITCH SETTINGS

SPEED CONTROL SWITCH

LOADBATTERY

SOLAR PANEL

Specifications:

System voltage - 12v to 25vSystem Current - 5.5ARegulation Voltage - 14.5Accuracy - 60mvOperating Temp - 10oc to 85oc

Electrical Characteristics:

Open circuit voltage - 21.6vShort circuit current - 1.94AMaximum power - 20wp

CHARGER CIRCUIT

U1

12

X1

FUSE

D1

1N4007GPD2

1N4007GP

C1220mF

R11.2kΩ

D3

1N4007GP

XCP1

XCP2

V1230 Vrms 50 Hz 0° LED1

1

4

5

82

3

6

9

0

Every electrical and electronic device that we use in our day-to-day life will require a power supply. In general, we use an AC supply of 230V 50Hz, but this power has to be changed into the required form with required values or voltage range for providing power supply to different types of devices. There are various types of power electronic converters such as step-down converter, step-up converter, voltage stabilizer, AC to DC converter, DC to DC converter, DC to AC converter, and so on.

MAIN CIRCUIT DIAGRAM

D1

1N4007GP

C110nF

L16mH

L24mH

L34mH

L46mH

Q1

TIS99

R1

560Ω

Q2

TIS99

C21000µF

R2560Ω

D21N4007GP

D31N4007GP

D4MBR20100

D5MBR20100

U2REF3012_SOT23_3

VREF

GND

3

VIN1 VOUT 2

C3100µF C4

100µFC5100µF

XCP3

XCP4

U11 A

XCP1 XCP2

12v dc input

12v o/p

FAN MOTOR

Specifications:

Operating voltage - 12vLoad current - 700mARPM - 1800 rpmWeight - 185GrmsWattage - 8.5wIP - 50Life span - 28900 Hours

WATER PUMP

Specifications:

Input voltage - 8 to 15vInput current - 350 to 500mAWattage - 150 gramsIP - 68Life span - 31000 HoursWater flow - up to 3fts

BATTERY

Battery - 12v 7.5AhBattery type - Lithium

ASSEMBLING THE PARTS OF AIR COOLER

ADVANTAGES & DSADVANTAGES

Low cost High reliable Low maintenance Simple in design Easy to install Compare ordinary coolers it’s 65% Better

ADVANTAGES:

DSADVANTAGES: Battery back up only 3-4 Hours Solar power s not available at night time Solar panel is sensitivity

APPLICATIONS

It used in schools and offices. It can be used n the rural areas where power cut is

problems.

CONCLUSION

Comparing the cost of this product with the existing products in the market is solar product appeals better and affordable by common people. This solar product perfectly suits for villages, schools and offices and thus an alternate to the power cut problems. It comprises of many attractive.

The output of the project is Comfort thermal conditions achieved in the living room. That is room temperature up to 25C and relative humidity of 60%.