Control method of heat pump system

Abstract

The invention provides a control method of a heat pump system. The control method of the heat pump system is applied to an air source heat pump unit and a ground source heat pump unit. During heating,the ground source heat pump unit and the air source heat pump unit can absorb heat from a surrounding environment and deliver the heat to an air conditioning device and a water heating device, and the heat is used for the air conditioning device and the water heating device. During cooling, the air source heat pump unit can absorb heat from an indoor environment and deliver the heat to the waterheating device, and the heat is used for the water heating device. Therefore, normal heating and cooling of the air conditioning device are not affected, the heat absorbed by the heat pump system fromsoil can be also appropriately decreased, conditions are provided for restoration of a soil temperature field around a soil heat exchange device, and accordingly heat balance of the soil temperaturefield using year as a period is maintained. The cost of the air source heat pump unit is relatively lower. Therefore, the heat pump system can also save energy, and the cost of the heat pump system can be reduced.

Description

technical field [0001] The present invention relates to a heat pump system, in particular to a control method for the heat pump system. Background technique [0002] In recent years, the ground source heat pump system has been widely used because of its high energy efficiency ratio and high degree of automation, which can meet the needs of heating, air conditioning and hot water supply at the same time. [0003] The ground source heat pump system is a kind of high-efficiency energy-saving air-conditioning equipment that uses shallow geothermal resources (also called ground energy, including groundwater, soil or surface water, etc.) to provide both heating and cooling. Actual operation monitoring and simulation studies have shown that a single ground source heat pump system can perform well in the long run only in areas with similar cooling and heating loads in winter and summer. [0004] The heat source of the air source heat pump is the air we all need, and as an energy-sa...

AI Technical Summary

Problems solved by technology

However, both of the above measures have obvious disadvantages

For the first measure, because other heating means are used instead of the ground source heat pump system for heating only when the ground source heat pump system has poor operating performance or insufficient output, and the above-mentioned other heating means mostly consume energy, so this means is less energy-saving. Difference

For the latter measure, due to the low heat flux density of solar energy in cold regions, larger area collectors are required in practical applications, which will result in high initial investment costs and long payback periods for ground source heat pump systems.

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