Community Research and Development Information Service - CORDIS

A heat exchange system for energy efficiency

A major achievement of mankind consists of the ability to maintain safe and comfortable indoor environments. However, not only does the heating and cooling of living spaces constitute considerable expense in an average home, it is also environmentally unfriendly. An Estonian company developed a new inexpensive method for fresh air cleaning, cooling and warming using a geothermal heat exchange apparatus that is capable of sustaining a natural indoor environment and leads to energy efficient buildings.
A heat exchange system for energy efficiency
A building's environment affects the comfort, productivity and health of its residents. Maintaining desired temperature and indoor air quality at the same time is one of the most important and energy intensive tasks in modern society. The environmental and economic effects of contemporary heating and cooling systems have urged the search for new alternatives.

The proposed system is essentially a geoexchange system that uses the constant temperature of the earth as an energy source to be used throughout the building for heating and cooling, resulting in significant energy savings. More specifically, it consists of a set of two concrete chambers for decreasing pressure linked by hot zinc-steel or stainless steel pipes that is dug underneath the building to a depth of 2m, where the temperature is a constant 6°C. Fresh outdoor air is circulated through the system to the ventilation system of the building for achieving a stable indoor air temperature, for instance at 21°C given an outdoor temperature of almost 30°C.

This system offers the environmental and economic advantages of using an electricity-independent working apparatus for air-cooling. In addition, its ability to remove the large dust particles from the intake of fresh air results in a great reduction in maintenance-filtering costs. Furthermore, its simple design leads to considerable reductions in the building costs, while its underneath-the-building location provides more spacious buildings. Unlike the air-conditioners, it ensures the indoor temperature changes in a more natural and smoother way without releasing any heat outdoors and without drying the indoor air.

The developer is searching for partners, such as architects, building constructors, ventilation systems installers, and/or dealers or marketers in any European country.

Related information

Record Number: 80604 / Last updated on: 2005-09-18
Domain: Energy