NATURAL AIR CONDITIONER AND TEMPERATURE SENSOR AND CONTROLLER

[prakash050292]

NATURAL AIR CONDITIONER

 The Challenge

In today’s lifestyle major problem faced by people is to protect them

from environmental pollution and the major pollutant of

environment is the harmful gases emissions which are present

everywhere.

 The Solution

The solution to such problem is by use of renewable source of

energy with use such methods we can save our  environment from

the harmful gases and emission done for cooling and heating  for this

a environmental friendly solution is  natural air conditioner which

uses renewable source of energy for cooling as well as heating.

Depending on latitude, the temperature beneath the upper 6 meters

(20 ft) of Earth's surface maintains a nearly constant temperature

between 10 and 16 °C (50 and 60 °F) so we use this region for our

project

 Introduction

As we know as per geothermal gradient  temperature of earth

increases as we go deep in the earth if we cross one layer then the

temperature starts increasing but here we are not crossing the

layer so temperature below the crust (top layer) remains constant

so when we put pipe 20 feet under the ground as shown in figure,

as the pipe is  metallic so when air goes from opening no 1 its

molecule hit wall of  pipe No 2 it looses/gains its temp till it comes

to an equilibrium and  this air is put in room by fan no 2 and air in

room is taken by fan no3 and this air is again pushed back to

underground point no 4 by pipe no1 and is mixed with air coming

from fan no 1 and  again pulled back to room

WORKING AS AIRCONDITIONER

As in summer the temperature increases to 45 to 48 degree Celsius so

temperature of top layer of crust is increased equally so this

arrangement will work as air conditioner during summer time the hot

air is taken in by fan1 and through pipe no 2it is taken to ground and

ground temperature is about 10 to 16 degree Celsius as we know heat

moves from high temperature to low same as water flows from place

where water level is high to low so when this air is pushed back to room 

by fan no2 , it feels cool and same time the air which is hot is taken by

fan no3 and air is reached to point no4 through pipe no 1 and is mixed

with air coming from fan no1 and it again pushed back to room by fan

no 2

WORKING AS HEATER 

During winter season the temperature decreases to 5 to 8 degree

Celsius so temperature of top layer of crust is decreased equally so

this arrangement works as air heater in the winter season so the cold

air is taken in by fan1 and it is taken to ground by pipe no2 and

ground temperature is about  10 to 16 degree Celsius as we know

heat moves from high temperature to low same as water flows from

place where water level is high to low so when this air is given by fan

no2 in the room, it feels hot and same time the air which is cold is

taken by fan no3 and air is reached to point no4 through pipe no 1

and is mixed with air coming from fan no1 and it again put in room

by fan no 2

 System Implementation

The system can be implemented anywhere as it requires one time

payment and very little on  maintenance as compared to

conventional air conditioners as natural air conditioner requires less

electricity to run because here we are running both fans by solar

energy so it is very eco friendly and also cost effective measure for

air conditioning particular premises

 Benefits

o Significant reduction in annual primary energy demand.

o Space cooling not dependent on refrigeration.

o Eco friendly.

o Large energy savings over both natural ventilation and air

conditioning and in air heating.

o Windows can be opened during the day, unlike with air

conditioning systems.

o No release of harmful gases

o The fundamental concept in the planning and design of

project was the harmonization of six environmental

components: ‘wind’, ‘light’, ‘heat’, ‘water’, ‘earth’

and

‘plants’.

 Comparison of both air conditioner

Pollution by conventional air conditioner

- Release of harmful gases.

- Release of hot air.

- Use of plastic which cause further pollution.

- Use of electricity which is non renewable source of energy.

Benefits of natural air conditioner

- No release of harmful gases.

- No release of hot air as system is self sustained also.

- No use of plastic use of only metallic equipments.

- Uses solar energy to run fans so no electricity bills.

 Conclusion

There are many advantages of using Natural air conditioner as it  is

cost effective, Eco friendly, and has non dependency on electricity.

As there are many advantages of natural air conditioner so people

have to be made aware about its cost effectiveness and eco

friendliness so that this system is taken as a new generation eco

friendly solution to air conditioning needs of people who switch to

conventional air conditioning method. This new system will create a

new era in the field of environment friendly development!

TEMPERATURE SENSOR AND CONTROLLER

 The Challenge

The main challenge is to control the temperature  in a limited

environment i.e. Room temperature at defined specific temperature

with the use of the said method  there will be no fluctuation of

temperature from user set temperature.

 The Solution

In order to find solution to the said challenge for controlling

temperature  various device like  thermostat are being used

traditionally in all heating and cooling devices  i.e.    Thermostat of

heater user sets the temperature and if the temperature crosses the

set temperature the  thermostat  cuts off the  supply to heating

element .In reverse conditions if the temperature of room still rises

due to some  conditions then thermostat will not function still the

heating element doesn’t reaches up to the set temperature were the

situations is use of temperature sensor and controller  in this air

conditioner and heater are connected to this circuit and user can set

the temperature using two switches it will help in controlling the set

temperature. 

 Introduction

The temperature sensor and controller is designed to sense the

temperature and control the temperature of the environment using

air conditioner and heater simultaneously with the help of designed

circuit there will be no fluctuation of temperature set by the user the

temperature will be controlled using two inbuilt switches one switch

to increase temperature with the help of heater and other switch to

decrease temperature with the help of air conditioner if the

temperature of room is above the required set temperature then it

will switch on air conditioner to  reduce the  temperature and if

temperature is below the required set  temperature then it will

automatically switch on heater to increase temperature

 System Working

The system works to control the set temperature set by user where

air conditioner and  heater are being used for obtaining the set

required temperature in a room or specified area for example if user

sets the room temperature to 21°C and the room temperature is

10°C then it will put heater on and increase the temperature to 21°C

and switch to idle state and if due to some external source if

temperature increases to 21.1°C it will  put air conditioner on and

bring temperature to 21°C

 Detailed working of circuit

As soon as the circuit is switched on it will first sense the

temperature through temperature sensor  i.e. LM35 now LM35 will

give analog signal in form of voltage to ADC0804. ADC0804 will

further convert analog signal to digital as microcontroller is  capable

to deal only in digital signals as the voltage received by ADC0804 will

be multiplied by 10 and we will get corresponding temperature it will

be displayed on LCD and now it is compared with the temperature

set by the user if it is greater than the set temperature by the user

then it will switch on air conditioner and if it is low then it will switch

on heater

 Benefits

It can be used in home appliances (ex. Air-conditioner, refrigerator etc)

It can be used in food technology

In automobiles

In medical/chemical industry

In fabrications

 Modular discription of the job

Front View of Temperature sensor  

Circuital View of Temperature Sensor

This is temperature sensor it can only sense the temperature of the environment

and display on the screen

Front View of Temperature Sensor and Controller  

Circuital View of Temperature Sensor and Controller

 Circuit diagram

 Conclusion

The system is designed to sense and control the temperature in turn

helping to  control any fluctuation in temperature. This new system

will  help in  creating better temperature controlled environment

across personal and industrial establishments where temperature

plays a vital role.