Solar cooling and heating hybrid device with heat pipe and flat plate dual collectors

Presents the design and operating principle of the solar cooling and heating hybrid device, thermodynamically analyses and simulates the hybrid device. The results indicate that the COP and heat efficiency of the hybrid system can reach 0.181 and 0.335 respectively under the condition of solar irradiance of 15 MJ/(m²·d), and that the hybrid system still can be used as single solar water heater effectively with heat efficiency of 0.413 under the condition of solar irradiance of 12 MJ/(m²·d).