Solar heat pump and heat pipe composite system

Abstract

The invention relates to a solar heat pump and heat-pipe composite system. A compressor of the system is communicated with a water-cooled condenser, a photovoltaic evaporator and a throttling mechanism through a four-way valve; the water-cooled condenser is connected in parallel with an indoor air-cooled heat exchanger; the photovoltaic evaporator is connected in parallel with an outdoor air-cooled heat exchanger and is also connected with a photovoltaic control mechanism; the inlet of the water-cooled condenser is connected with the outlet of the photovoltaic evaporator through a heat pipe evaporation ascending pipeline; and the outlet of the condenser is communicated with the inlet of the evaporator through a heat pipe condensing reflux pipeline. A gravity heat pipe of the invention hasexcellent complementarity with a photovoltaic-solar heat pump system; and the inside of the gravity heat pipe can adopt the same refrigerating working medium as heat pump circulation. The adoption ofthe operating mode of the heat pump or the heat pipe can realize various application functions of heating in winter, refrigerating in summer, providing living hot water all the year around, providingphotovoltaic electric power and the like; and the switching among the functions of the system is controlled by a solenoid valve. The practicability of the system is improved, and the consumption of the conventional energy source is reduced to the utmost extent at the same time.

Description

technical field [0001] The invention belongs to the field of solar energy application and relates to a solar heat pump heat pipe system. Background technique [0002] The energy issue is the primary issue of social and economic development. In recent years, along with the rapid economic development, my country's demand for energy presents a trend of rapid growth. At present, due to the low efficiency of energy utilization in my country and the excessive use of fossil energy such as coal, my country's energy problems have become more severe and environmental damage has become increasingly serious, which has greatly restricted my country's economic development. Solar energy is an important alternative to traditional energy because of its renewable and environmentally friendly advantages. The current application of solar energy is mainly photothermal conversion and photoelectric conversion. [0003] Photovoltaic / thermal comprehensive utilization of solar energy (PV / T, Photov...

AI Technical Summary

Problems solved by technology

However, as the temperature of hot water increases, the heat exchange efficiency between the heat pipe and the hot water is low, and the efficiency of the heat pipe is also reduced. If the heat pipe is kept in the running state, it is obvious that the maximum utilization of solar energy cannot be realized, and the combination of the heat pipe and the PV evaporator When the climate requirements are relatively high, the continuous supply of hot water cannot be realized

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