Heat pump system utilizing solar energy-air energy

Abstract

The invention discloses a heat pump system utilizing solar energy-air energy. The heat pump system utilizing solar energy-air energy comprises a solar heat collecting unit, a solar absorption type heat pump unit and a compression type heat pump unit. A solar drive absorption type refrigerating cycle and a compression type heat pump cycle are used for forming a cascade cycle, the condensation temperature of a compression type heat pump unit is lowered, and the power consumption of a compressor is reduced; and the problem of system continuous refrigerating or heating under the condition of insufficient solar energy or the lack of solar energy is solved through an air source heat pump unit. According to the system, solar energy and other low-grade energy are efficiently utilized, and the system has the beneficial effects of being all-weather and ceaseless, stable and reliable in running, high in energy utilization rate and the like, and has wide application prospects.

Description

technical field [0001] The invention relates to the field of heat pump technology, in particular to low-grade heat-driven absorption refrigeration cycle and electric energy-driven vapor compression heat pump technology. Background technique [0002] According to the development of the energy situation in recent years, energy consumption and environmental issues have become the focus of the world. It is an inevitable trend in today's energy industry to develop new energy, improve energy utilization, and achieve sustainable energy development. Low-grade energy such as solar energy and geothermal energy, as widely distributed clean energy, is one of the most important alternative energy sources that has attracted the most attention, and the recovery and reuse of waste heat has become one of the most popular research directions. [0003] There are many ways to achieve cooling and heating. The electric energy-driven compression heat pump has the characteristics of meeting the coo...

AI Technical Summary

Problems solved by technology

[0003] There are many ways to achieve cooling and heating. The electric energy-driven compression heat pump has the characteristics of meeting the cooling and heating requirements of users and continuous and stable operation. However, because it consumes a large amount of high-grade energy, it does not have significant advantages in energy saving and emission reduction. Driven by a low-grade heat source, it has the advantages of simple structure, low cost, and reliable operation. However, due to the large equipment, low efficiency, and limitations of the inherent characteristics of the ejector, the ejector refrigeration cycle is difficult to obtain a lower refrigeration temperature. These factors limit The promotion of it in the field of refrigeration and air conditioning; solar-driven absorption refrigeration has the disadvantages of high temperature requirements, often requiring auxiliary heating, low unit efficiency, intermittent work due to changes in sunlight intensity, etc., which limit its promotion and application

[0004] In response to the call for energy conservation and emission reduction, to improve energy utilization and realize cascaded utilization of energy, a cascade cycle composed of solar jet refrigeration cycle and compression refrigeration cycle, solar absorption refrigeration cycle and compression refrigeration cycle emerged as the times require, which improves the The utilization rate of low-grade energy reduces the high-grade energy consumption of the system, but these cycles still cannot solve the problems of the unit working around the clock and obtaining high cooling efficiency, especially when the solar energy is intermittent, the normal operation of the system cannot be guaranteed, and these It is also difficult for the system to balance cooling in summer and heating in winter

Images