This study demonstrates how it is possible to increase the performances of an air-cooled
heat pump by the use of Horizontal Air-Ground Heat Exchanger (HAGHE); the analysis has
been carried out varying the air flow rate and heat conductivity of the ground. For a warm
climate, the air treatment using HAGHE involves an improvement of the Energy Efficiency
Ratio (EER) of the heat pump for the entire summertime. About the wintertime, the coefficient
of performance (COP) results improved from November to February, but it is possible to …

A concept of Air-Cooled Heat Pump (ACHP) coupled with a Horizontal Air-Ground Heat
Exchanger (HAGHE), also called Horizontal Earth-To-Air Heat Exchanger (EAHX), has been
proposed. The Air-Cooled Heat Pump is a system which transfers heat from outside source
(air) to inside sink (water) and vice versa in summertime. The innovation is to provide a
geothermal treatment of pre-heating/cooling of air before meeting the evaporator in winter or
the condenser in summer of the heat pump. Besides, it is known that the variations of the …