The effectiveness of a heating system is validated, heating air from solar radiation

Heating and air conditioning in buildings make up almost half of the total energy consumption in the European Union. What is more, nearly 75% relies on fossil fuels, according to data from the European Commission. Hence, reducing this consumption and integrating renewable energy in heating and air conditioning processes in buildings is one of today’s priorities for scientific research.

The research team from the Thermal Machines and Engines Section at the University of Cordoba performed an experimental study that validated the effectiveness of a heating system that heats air in buildings using solar radiation.

The device uses a series of heat collectors, known as UTCs (Unglazed transpired collectors), that absorb the heat generated in the outer layer of the facade when hit with sun rays. Later, using this energy, the ventilation air is preheated before going into the residences to heat them.

The system, patented decades ago, “has not had widespread use in Europe, other than a few experimental buildings”, explains the lead author, Fernando Peci.

The team installed the device on a test module of 4×2 meters subjected to the normal conditions of a home. Over the course of a month, during winter, this heat collector was monitored throughout different weather conditions such as solar radiation, room temperature, wind and solar radiation angle of impact.

According to the study’s results, the heating demands needed to heat the building would be covered for 75% of the days accounted for in the study, proving that “this technology could offer great performance in order to heat buildings using solar energy”, especially those without much glass on their facades and facing southwards, as the Northern Hemisphere receives more natural light during the day from that direction.

A strategy to refurbish buildings:
As the lead author of the research points out, this heating system could be advisable when renovating old buildings, since installing it does not alter the original facade. The heat collector is made up of a perforated metal plate -covered with a dark material- so it can connect to the ventilators and carry the heat inside, so the building would be minorly affected.

Furthermore, as Fernando Peci underscores, the team suggests using these ventilation systems in social housing, “in homes where most families can’t afford to pay for heating costs”. In this vein, the device would not only benefit the environment, but also translate into financial savings on the electricity bill, one of the most feared bills in the winter.

Research paper

Related Links
University of Cordoba

All About Solar Energy at

Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.With the rise of Ad Blockers, and Facebook – our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don’t have a paywall – with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor

$5 Billed Once

credit card or paypal

SpaceDaily Monthly Supporter
$5 Billed Monthly

paypal only

REC Solar and DHX-Dependable Hawaiian Express complete solar microgrid project

Honolulu HI (SPX) May 25, 2020

DHX – Dependable Hawaiian Express and REC Solar, an unregulated affiliate of Duke Energy, announce the completion of a solar microgrid solution designed to bring reliability, savings, zero-emissions generation and more to the leading Hawaiian-based freight company. The vision for renewable generation combined with energy storage as a backup power supply came long before DHX opened its environmentally friendly facility in Honolulu last August. “When your company’s first name is “dependable,” … read more

Search Solar Products Store

Leave a Reply