The invention discloses a solar photo-thermal and
natural gas cold energy combined power
machine power generation system, and belongs to the field of power generation. The
system comprises a
water supply tank, a solar photo-thermal
system, a preheater and an ORC screw rod expansion power
machine generator set, wherein the
water supply tank is connected with the solar photo-thermal
system through awater supply pump, a
liquid storage tank communicates with the preheater through a working medium pump, the preheater communicates with an
evaporator, the
evaporator communicates with the solar photo-thermal system, the
evaporator communicates with the ORC screw rod expansion power
machine generator set, and the ORC screw rod expansion power machine generator set communicates with a condenser. According to the solar photo-thermal and
natural gas cold energy combined power machine
power generation system, a comprehensive energy
thermodynamic system is reasonable and scientific in
heat energy,and efficient utilization is achieved; and in case of a disposing process, on the basis that LNG has the cold energy and
pressure difference energy characteristics, the combination between a clean solar photo-
thermal energy source and the cold energy and the
pressure difference energy is adopted, so that the green and environment-friendly effects are achieved, the energy-saving concept is prominent, moreover, the life civilization environment of an LNG
station is perfected, and the comprehensive energy
utilization rate of the
clean energy and the cold energy and the
pressure difference energyis greatly improved.