The re-use of return air in central conditioning systems is one of the most important
procedures for saving power consumption. However, the requested fresh air of the people
existed within the conditioning space imposes determining the number of ti
mes to be used.
This research aims to link the work of the central conditioning system (heating) of a
facility with the number of people existing within this facility by modifying the ratio of
mixed fresh air and return air to save the electrical power consumption. Also, to raise the
temperature of the mixture air by controlling the flow of hot water continuously rather than
using on-off technique. As well as, to respond to any change in the number of people and
get rid of repeated machine starting.
Our research has been done by using specialized physical model consisted of test
room, heat and movement sensors, pump, water tank, heat exchanger and air mixing
blades. These devices are controlled by microcontroller type PIC16F877A.
The experimentally obtained results showed the ability of controlling the amount of
return air depending on the number of people and controlling the speed of the pump
continuously providing a saving of electrical energy consumption up to 68% compared
with the case of full speed.
The present paper aims to use the thermal energy source for heating and water heating, by
mechanical method, and using rotary thermal generator doesn't produce environmental
harmful gases.
The thermal rotary has high specifications: easy investmen
t and low economic costs. In our
present work, we designed a special plan for placing the thermal rotary in the housethermal
heating system, for hot water production, for kitchens, washing and other alimentary
manufactures.
However, the plans explain using rotary thermal generator which could save in most traditional
heating machines and water heating especially boiler, burner and flue that produces
gases due to fuel combustion that is polluted environment, so that they are economic and
environmental friend.
