Provided is a photovoltaic loop heating
pipe assisted twin-heat-source heat-pump
heat supply system. The photovoltaic loop heating
pipe assisted twin-heat-source heat-pump
heat supply system mainly comprises a solar / air
evaporator, a pipeline A, a valve A, a pipeline B, a compressor, a pipeline C, a pipeline D, a condenser, a valve C, a pipeline E, a solar photovoltaic-loop heating
pipe evaporator, a pipeline F, a valve D, a pipeline G, a pipeline H, a valve B and a capillary tube. According to the
operation mode of a
heat pump,
solar energy and air are adopted as heat sources, the defect that an air source
heat pump has low operation efficiency or can not operate in a low temperature environment is overcome, and the problem that the area of a heat collector in a common solar auxiliary heat-pump
heat supply system is too large is solved; by arranging the
evaporator in the loop heating pipe mode and the evaporator in the
heat pump mode in a split mode, mismatch between the condenser and the evaporators when the two
modes share the condenser is avoided; and the overall structure is simple, the solar photo-thermal utilization integrated conversion efficiency can be improved sufficiently, external power supply of the system is achieved, and the
energy consumption of the heat supply system for buildings is approximately zero.