Low-ambient-temperature aqueous solution energy tower and heat pump system thereof

Abstract

The invention relates to the field of heat exchange equipment, in particular to a low-ambient-temperature aqueous solution energy tower and a heat pump system thereof. The low-ambient-temperature aqueous solution energy tower comprises a tower body, wherein at least one first heating tube for preventing fluid in the tower body from icing is arranged in the tower body; the first heating tube is positioned below the heat exchange tube; and at least one second heating tube for preventing fluid in a liquid storage tank from icing is arranged in the liquid storage tank. The low-ambient-temperatureaqueous solution energy tower efficiently prevents in-tower icing, and is prolonged in service life.

Description

technical field [0001] The invention relates to the field of heat exchange equipment, in particular to a low ambient temperature aqueous solution energy tower and a heat pump system thereof. Background technique [0002] With the rapid growth of China's economy, the consumption of energy is increasing, a large amount of fossil fuels have destroyed the ecological environment, and the greenhouse effect has become more and more serious. At present, my country's building energy consumption is very huge, and the current building energy consumption accounts for about 27.5% of the terminal energy consumption of the whole society in my country. And with the development of urbanization, building energy consumption will increase rapidly, and the development of urbanization has caused great pressure on the energy supply of building energy in my country. Air conditioning energy consumption accounts for about 30% of building energy consumption, and improving the efficiency of air condit...

AI Technical Summary

Problems solved by technology

As the temperature of the solution decreases, the evaporation temperature will decrease and the energy efficiency of the system will decrease

Therefore, the heat source tower has certain restrictions on the outdoor ambient temperature in winter. When the ambient temperature is too low, the heat gain of the heat source tower with the same volume will attenuate, which may not be able to meet the heat required by the building.

Therefore, the applicable areas of heat source towers are mainly the middle and lower reaches of the Yangtze River. In colder areas, the use of heat source towers is limited, and the use of heat source towers in cold areas also leads to the occurrence of icing in the heat source towers.

[0005] For example, the Chinese invention patent with the publication number "CN110360852A" previously applied by the applicant records a phase change energy tower and its heat exchange method, wherein the phase change medium is an alcohol solution such as ethylene glycol or propylene glycol or salts Solution such as sodium chloride mixed solution, the concentration of the solution can be adjusted according to the minimum operating environment temperature to change the freezing point. During the practice, the applicant found that both his own scheme and the current heat source tower mostly use salt solution or ethylene glycol solution to prevent There are three problems in this kind of chemical anti-icing method: one is that the salt solution corrodes the parts, which greatly shortens the service life of the energy tower; the other is that the solution needs to be concentrated regularly, and additional solution concentration equipment is added. It not only increases the cost but also increases the floor space; the third is to discharge the solution to pollute the environment

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