A low valley electric driven air source heat pump multi-mode heating system

Abstract

The invention relates to an air source heat pump multi-mode heating system driven by off-peak electricity. The air source heat pump multi-mode heating system driven by the off-peak electricity comprises a heat conductive pipe which presents to be a circulation loop, the heat conductive pipe passes through an air source heat pump, a heating unit and a multi-stage energy storing unit sequentially, the heat conductive pipe is filled with a heat conductive medium, a heat transfer conduit is laid in the multi-stage energy storing unit, and heat in the multi-stage energy storing unit is transferred to heat users through a heat transfer medium in the heat transfer conduit. Compared with the prior art, all-weather high-efficiency using of the air source heat pump can be achieved by utilizing the methods of electric assisted heating and air pre-heating, the energy utilization efficiency can be improved by adopting the methods of the off-peak electricity and high and low temperature stage heat storing and releasing, lower space needs and stable temperature output are obtained by adopting a high-density phase change heat storing device, and the air source heat pump multi-mode heating system has the advantages of being small in size, high in efficiency, all-weather self-adaptive and excellent in economical efficiency.

Description

technical field [0001] The invention relates to the field of heat pump air conditioning heating, in particular to an air source heat pump multi-mode heating system driven by low valley electricity. Background technique [0002] With the continuous change and progress of society, energy has become the cornerstone of human survival and development. Since the Industrial Revolution, the rapid increase in the consumption of fossil fuels has posed enormous challenges to energy security and environmental protection. In the energy consumption, the building consumes a huge amount of energy, and the largest energy consumption comes from the refrigeration, air conditioning and heating fields. In order to save energy and reduce carbon emissions, efficient energy-saving technologies are constantly being proposed. [0003] Compared with the current mature air-conditioning and refrigeration technology, the heating efficiency of households and industries is generally not high, and there a...

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Problems solved by technology

[0004] After consulting the existing relevant patent documents, the Chinese patent application number is CN201420352471.4 "Solar Seasonal Heat Storage Composite Low Valley Electric Drive Air Source Heat Pump System" comprehensively utilizes solar energy and low valley electricity. This system is relatively novel but various energy sources are difficult to perfect Matching and complex system lead to poor economy

The Chinese patent application number is CN201420641206.8 "Valley electricity energy storage heat pump water heating device" proposes a water heating device using valley electricity energy storage, but it still does not overcome the low efficiency or even unusability of traditional air source heat pumps in low temperature environments problems, and did not propose detailed and specific operating methods and application instructions

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