This paper presents a feasibility study of a low-energy consumption ground source cooling systems based on a Periodic Two-Phase Thermosyphon (PTPT) device in which the condensate is periodically transferred back to the evaporator. Operation of this PTPT is passive with the ground condenser positioned 1-11 m below the evaporator. The ground condenser may at the condensing temperatures of 12-20 °C depending on the ground depth. A semi-analytical approach has been used to simulate the behaviour of the PTPT device over time. The model has been used to study the effect of several parameters on the cooling rate of the device, including the length of condensing coil, the ground depth, the temperatures of the soil and the indoor air. The preliminary results looks promising.
Periodic thermosyphons for environmentally friendly ground source cooling applications
FILIPPESCHI, SAURO;
2010-01-01
Abstract
This paper presents a feasibility study of a low-energy consumption ground source cooling systems based on a Periodic Two-Phase Thermosyphon (PTPT) device in which the condensate is periodically transferred back to the evaporator. Operation of this PTPT is passive with the ground condenser positioned 1-11 m below the evaporator. The ground condenser may at the condensing temperatures of 12-20 °C depending on the ground depth. A semi-analytical approach has been used to simulate the behaviour of the PTPT device over time. The model has been used to study the effect of several parameters on the cooling rate of the device, including the length of condensing coil, the ground depth, the temperatures of the soil and the indoor air. The preliminary results looks promising.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
