HEAT RECOVERY SYSTEM CONTROLLER

BYAjeetesh Govrineni

OVERVIEW

Simple and Low-Cost

Differential Temperature Controller

Developed for Heat Recovery System

DESIGN Temperature Sensors Temperature controlled Switch DC FAN AA Batteries

FUNCTIONALITY

Differential Temperature Switches Fan on-off Lasts 26-27

hours

MODELS BUILT Lab Test Model Field Test Model

APPLICATIONS

Heat Recovery System Grey Water Recovery System Solar Water Heater

FUTURE IMPROVEMENTS

Low-Power Indicator New design with Micro-controller Wall plug in model Rechargeable model

COMPETETION COMPARISON

• • •

QUESTIONS?

REFERENCES Microchip TC621 datasheet http://www.solorb.com/elect/solarcirc/diftemp2/ http://www.mydtcstore.com/?gclid=CLKs1fzvta4CF

SEQNAodsVQMpw

http://www.emersonclimate.com/en-US/products/thermostats/Pages/programmable_universal_thermostats.aspx

http://www.wsetech.com/off%20grid%20solarheating%20controller.php

http://en.wikipedia.org/wiki/Solar_water_heating