Absorption refrigerating machine with integrated solar assisted heat pump system

Abstract

The invention discloses an absorption refrigerating machine with an integrated solar assisted heat pump system. The absorption refrigerating machine mainly consists of an absorption refrigerating system and the integrated solar assisted heat pump system, wherein the integrated solar assisted heat pump system consists of a heat storage water tank, a condenser, a pump, a compressor, a throttling valve, U-shaped evaporating pipes and a solar thermal collector, the compressor, the U-shaped evaporating pipes the throttling valve and the condenser form a refrigerant circulating passage, and the U-shaped evaporating pipes are arranged in every solar vacuum heat collecting pipes of the solar thermal collector. Low-temperature heat (low-grade heat sources) which cannot be directly utilized are converted into high temperature heat sources to be utilized by the heat pump system, and the energy utilization efficiency can be obviously improved by the adoption of the compression heat pump; the solar vacuum heat collecting pipes are filled with phase change energy storage materials, so that not only is the problem that the heat storage capacity is insufficient caused by the fact that sensible heat is utilized for storing heat solved, but also the defect of instable operation efficiency of the heat pump is overcome, and therefore the COP (coefficient of performance) and the operation stability of the system are improved.

Description

technical field [0001] The invention relates to a refrigeration device, in particular to a solar absorption refrigerator. Background technique [0002] At present, countries all over the world are stepping up research on solar air-conditioning technology. According to the survey, countries and regions that have established or are building solar air conditioning systems include Italy, Spain, Germany, the United States, Japan, South Korea, Singapore, Hong Kong, etc. This is because air-conditioning energy consumption in developed countries accounts for a considerable proportion of the annual civil energy consumption, and the use of solar energy to drive air-conditioning systems is of great significance to saving conventional energy and protecting the natural environment. In order to further broaden the application range of solar energy and make it play a greater role in energy conservation and environmental protection, my country carried out research on solar air-conditioning...

AI Technical Summary

Problems solved by technology

[0004] Problems existing in traditional solar absorption refrigerators: First, because the first-stage lithium bromide absorption refrigerators of solar refrigeration systems require the temperature of the heat source to be 88-95°C, the manufacturing process of high-temperature solar collectors that reach this temperature range is required Complicated and costly; second, due to the great fluctuation of solar radiation, such as rainy days and night solar radiation is often not enough to provide enough heat, the temperature of the hot water provided can not meet the requirements, so the system in rainy days, It cannot operate stably at night or in the case of insufficient solar radiation; third, the low coefficient of performance COP of this system is the key to limit the practical application of this system

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