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Greener: the energy-independent house

Abstract

The main purpose of our work was to recycle solid domestic waste in order to

obtain pure, clean and low-cost energy. In this respect, the prototype for an energy-

independent house was built, which uses a hybrid solar system. In this system, heat is

obtained through thermosolar conversion, while electricity is produced through the

 photovoltaic effect.

For our work, two sources of green energy were constructed, installed and put into

use in parallel. A photovoltaic panel dedicated to producing energy for operating all the

electrical items and appliances in a house, respectively a solar convertor for heating the

house and producing domestic hot water.

Both technologies are viable and highly efficient. They represent the ideal

solution for locations that do not have connections to the national gas and electricity

networks. In addition, such systems can help consumers by reducing their bills for 

different utilities, respectively, obtaining short damping time in the case of domestic

water systems heating.

There are numerous advantages to using these systems independence from the

national electricity and gas suppliers! immunity against the increasing price of these

utilities! the installation of such systems does not re"uire any authori#ation! long-term

operation at low maintenance costs! protecting the natural resources! reducing the $%&

emissions! recycling waste products in e'change of their storage and reducing the costs

of the energy used for recycling.

The prototype of the photovoltaic panel we developed contains &( solar cells with

an in series connection. The panel is connected to a battery and an inverter. The inverter 

was used to convert the )& volts generated by the panel to a voltage of &*+, needed to

 power any electrical devices or appliances in a home.

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For the reali#ation of the solar heater A/0F1, 2( recycled aluminum pop cans

were used. The cans were painted in matte black to absorb solar radiation. An ad3ustable

thermostat is attached to the converter to set the desired temperature the panel operates

at1, a heat e'changer and a water pump for the production of hot water. To determine the

effectiveness of this system, the input and the output temperatures were measured every &

hours, for &2 hours.

The results obtained showed significant increases in temperature for every

measurement made. The most significant increases in temperature were registered in the

afternoon, when air temperatures reached ma'imum rates. The biggest difference

 between the temperatures registered was 4+ 5 $ around 2 6.7. when the registered input

temperature was &&5 $ and the output (&5 $1.

The energy-independent house prototype reali#ed in this pro3ect wants to promote

the idea of approaching similar systems but on a larger scale, that can serve larger 

 buildings, such as private enterprises, institutions, holiday homes in rural #ones where

there is no access to the national electricity gas networks etc.

The hybrid solar system proposed by us satisfies the needs of the beneficiaries

through internal space heating at the desired temperatures, space lightning and household

 powering, making all the processes that use various forms of energy to run properly.

Reference

ExxonMobile &+)&1 The %utlook for 0nergy A iew to &+2+. Annual eport p.)-8)

Countryman, K  &+)&1 The %utlook for 0nergy A iew to &+2+. 09:;ournal.

Analysis, <ews and <otes, <o.=.