The design and environmental evaluation of earth-to-air heat exchangers (EAHE). A literature review

Cooperation of Horizontal Ground Heat Exchanger with the Ventilation Unit During Summer – Case Study

“…One of them is used in the mechanical ventilation system ground air heat exchanger (earth-air heat exchanger -EAHX, EAHE, ETAHE, ATEHE) [5,6,7,8,9]. This solution, right after heat recovery from exhaust air (recuperation), allows the reduction in the energy needed to obtain the desired temperature of supply air [8].…”

“…This solution, right after heat recovery from exhaust air (recuperation), allows the reduction in the energy needed to obtain the desired temperature of supply air [8]. The concept of ground pre-heat has already been used in the times of ancient Greece and Persia [5,6,10]. Today the first application of pre-heat were glass-buildings.…”

“…Today the first application of pre-heat were glass-buildings. In recent years, these systems have been used in many types of buildings located in different climatic zones [5,6]. Literature shows several cases of ground -air exchangers for ventilation.…”

Design of an Earth Air Heat Exchanger (EAHE) for Climatic Condition of Chennai, India

“…Clara Peretti et al [16] and Bisnoyia et al [17] gave an extensive literature review covering design, characteristics of EAHE, modelling adopted by several researchers etc. When the earth air heat exchanger was integrated by solar chimney which utilizes both the geothermal energy as well as the solar energy, the energy savings were greater compared to uncoupled system [18].…”

“…Chlela et al [19] concluded that a balanced ventilation system coupled with EAHE significantly reduces a building's heat demand and hence its CO 2 emissions. Clara Peretti et al [16] discussed the effect of soil cover, climate and soil composition on the performance of the EAHE and concluded that the bare surface improves the performance of the EAHE for heating whereas the wet surface is better for cooling purpose. It has also been concluded that higher water content and closely packed soil near the pipes of EAHE improves the performance of the EAHE.…”