In order to achieve the goal
of “carbon peak” in 2030 and “carbon neutralization” in 2060, the task of
energy conservation has risen to the national strategic level, and its work is
urgent. It focuses on energy saving and energy consumption in data center, 5G
network and other fields. The gravity heat pipe double cycle air conditioning
is a kind of room air conditioning which uses natural cooling source with high
efficiency. According to the outdoor meteorological parameters of ten typical
cities in China, the calculation model of unit hybrid
refrigeration mode is established by using integral
method. A simplified algorithm for statistical summation is proposed. Then it
compares with the same type of refrigerant pump air conditioner, water-cooled
chiller and natural cooling plate. The results show that the annual
operation time of gravity heat pipe double cycle air conditioner is 50.8% longer than that of refrigerant pump air
conditioner. Then the calculation model is verified by the annual actual
operation data of a data center in Changsha. The results show that the double
cycle air conditioner with gravity heat pipe can save about 34% energy compared
with the chiller. The accuracy of the calculation model is 17.5%, which meets
the engineering accuracy requirements. The application of gravity heat pipe
double cycle air conditioning in hot summer and cold winter area is a scheme
worthy of popularization and application.
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