Composite energy system of solar energy, ground source heat pump and chilled water storage

Abstract

A composite energy system of solar energy, ground source heat pump and chilled water storage comprises an air conditioner, a domestic hot water supply device, one or more device (hereinafter referred to as host) of a solar energy heat-collecting device, a heat storage water tank unit, a cold storage water tank unit and a ground source heat pump system, a ground heat exchanger, an auxiliary heating device, a circulating water pump, a first electric three-way valve, a second electric three-way valve, a first electric two-way valve and a second electric two-way valve, wherein the circulating water pump is communicated with the air conditioner, and the auxiliary heating device is communicated with the domestic hot water supply device. The invention fully utilizes renewable energy sources such as solar energy, geothermal energy and biomass energy to masterly combine the ground source heat pump air-conditioning system with the solar energy hot water system and the chilled water storage system and construct a comprehensive energy system combined by the domestic hot water system, the ground source heat pump, the chilled water storage air-conditioning system and the like; and the invention is completely combined with the entire building so as to greatest reduce the floor space and the investment and increase the energy efficiency and economic performance of the system.

Description

technical field [0001] The invention belongs to the field of energy, and relates to an energy generation system, especially a renewable energy system. Background technique [0002] The ground source heat pump uses the characteristics of relatively constant temperature and high heat capacity of the underground soil or nearby water sources. In summer, the heat required for the air-conditioning refrigeration cycle is discharged to the ground, and in winter, the heat required for the air-conditioning refrigeration cycle is absorbed from the soil or It is taken out from the nearby water source to achieve the purpose of improving the cooling and heating efficiency in winter and summer at the same time. At present, domestic ground source heat pumps are developing the fastest, and the construction area used by the largest single project has reached 130,000 square meters. Statistics show that in 2005, the application area of ​​my country's ground source heat pump system was about 30...

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Problems solved by technology

[0006] At present, there is no method using this patent: fully integrate the energy system with the building as a whole, use the buried pipe heat exchanger with the structure of the continuous wall of the building and the buried pipe of the pile foundation, and use "valley power" to carry out the heat transfer during the period when the air conditioner is not needed. Store cold, and convert the underground daytime heat dissipation into the heat of the domestic hot water system in a timely manner, using both "cold and hot ends", improving energy utilization efficiency, and alleviating the efficiency of the ground source system caused by the cumulative increase in ground temperature Decline and the increasing difference between the daytime peak power load and the nighttime power valley load; at the same time, the combined use of the cold storage water tank and the fire pool makes up for the shortcomings of large area occupied by water cold storage

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