A heating cycle mode of heat pump drive multi-connected heat pipe is proposed. The feature of this method is that the air source heat pump is used to drive tandem heat pipe radiator for heating directly. In order to verify the feasibility of this heating method

an experimental platform was built based on a 2.5 kW compressor and 9 heat pipe radiators

and the device was tested under different working conditions. The test results show that the new heating device has a faster starting speed

when the outdoor temperature is -10 °C and the system runs for 36 minutes

the surface temperature of the heat pipe radiator can reach 45 °C. Heat is evenly distributed at the end of the heat pipe radiator. Except for 1# and 9# radiators

which have over-cooling and over-heating

the temperature difference between the other radiators is approximately 1 °C. At the same time

the system has a small heat transfer temperature difference and can operate normally under defrost conditions.