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Water-retaining, peak-regulating and decoupling recharging ground water source heat pump system

A water-source heat pump and peak-shaving technology, which is applied in heat pumps, geothermal power generation, heating devices, etc., can solve the problems of harsh application conditions and narrow application range, so as to expand the application range, solve recharge difficulties, and reduce dependence Effect

Inactive Publication Date: 2012-10-31
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To make the negative effects of thermal penetration acceptable, the structure of the underground aquifer needs to meet two conditions, namely, the structure of the confined aquifer (the upper and lower parts of the aquifer are sealed by impermeable formations) and the ratio of hydraulic conductivity (horizontal permeability coefficient / vertical permeability coefficient) must be greater than 30, and the conditions of such applications are relatively harsh, and the applicable range is relatively narrow

Method used

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  • Water-retaining, peak-regulating and decoupling recharging ground water source heat pump system
  • Water-retaining, peak-regulating and decoupling recharging ground water source heat pump system
  • Water-retaining, peak-regulating and decoupling recharging ground water source heat pump system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: A typical office building in Xi’an, with a heating and air-conditioning area of ​​20,000 square meters, meets the design daily load demand under the most unfavorable working conditions in summer, and the water supply required for the condenser of the heat pump unit of the project is 150m 3 / h. If a conventional groundwater source heat pump system is used, according to the geological conditions of the aquifer reported by the local well completion report, 2 pumping wells and 6 recharge wells are needed, and the total number of wells is 8. Since the water source system pumps and irrigates synchronously with the load, the total pumping volume and The recharge volume is 150m 3 / h. If the water storage peak regulation decoupling and refilling device of the present invention is adopted, when the capacity of the reservoir is 600m 3 At this time, the total number of wells on the water source side system can be reduced by 4, and the total water pumping and reinjectio...

Embodiment 2

[0040] Example 2: A typical shopping mall building in Xianyang, with a heating and air-conditioning area of ​​40,000 square meters, meets the design daily load demand under the most unfavorable working conditions in summer, and the water supply required by the condenser of the heat pump unit of the project is 620m 3 / h. If a conventional groundwater source heat pump system is used, according to the geological conditions of the aquifer reported by the local well completion report, 7 pumping wells and 14 reinjection wells are required, the total number of wells is 21, and the total pumping and recharging volumes are both 620m 3 / h. If the water storage peak regulation decoupling and refilling device of the present invention is adopted, when the capacity of the reservoir is 2000m 3 At this time, the total number of wells in the water source side system can be reduced by 6, and the total pumping volume and reinjection volume can be reduced by 30%.

Embodiment 3

[0041] Example 3: A typical residential building in Xianyang, with a heating and air-conditioning area of ​​80,000 square meters, meets the design daily load demand under the most unfavorable working conditions in summer, and the water supply required for the condenser of the heat pump unit of the project is 477m 3 / h. If a conventional groundwater source heat pump system is used, according to the geological conditions of the aquifer reported by the local well completion report, 6 pumping wells and 12 reinjection wells are required, the total number of wells is 18, and the total pumping and recharging volumes are both 477m 3 / h. If the water storage peak regulation decoupling recharge device of the present invention is adopted, when the capacity of the reservoir is 1800m 3 At this time, the total number of wells on the water source side system can be reduced by 6, and the total pumping volume and reinjection volume can be reduced by 30%.

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Abstract

The invention discloses a water-retaining, peak-regulating and decoupling recharging ground water source heat pump system, which comprises a well side water supply main pipe (1) and a well side water return main pipe (7), wherein a heat pump host (4) is communicated between the two pipes through an evaporator branch pipe and a condenser branch pipe, and an electronic water treatment device (12), a water source side water pump (11) and a cyclone desander (10) are sequentially arranged on the water supply main pipe (1) communicated with the evaporator branch pipe and the condenser branch pipe. The ground water source heat pump system is characterized in that a water-retaining, peak-regulating and decoupling recharging device (20) is communicated between the water supply main pipe (1) and the well side water return main pipe (7) which are communicated between the two sides of the water source side water pump (11). The water-retaining and peak-regulating technology can reduce the dependence of a heat pump unit on a pumping and recharging well at a period of high load and effectively reduce the pressure of system running on the recharging of ground water under the most adverse conditions, thereby solving the outstanding problems that the recharging is difficult at the period of high load. The invention is the further optimized integration of the existing recharging technology.

Description

technical field [0001] The invention relates to an engineering technology of an underground water source heat pump system, in particular to an underground water source heat pump system of water storage, peak regulation, decoupling and refilling type. Background technique [0002] Groundwater source heat pump technology is a high-efficiency energy-saving technology that uses groundwater as a heat source and heat sink. By consuming a small amount of high-grade electric energy, it absorbs and releases heat from groundwater based on the refrigeration thermodynamic cycle, and realizes heating and cooling for building users. In order to ensure the sustainable utilization of groundwater resources, my country's current "Ground Source Heat Pump System Engineering Technical Specifications" (GB50366-2005) requires that 100% of groundwater pumped up after heat exchange must be recharged to the same aquifer. my country has a vast territory, and the underground hydrogeological conditions ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B30/06F24J3/08
CPCY02E10/10
Inventor 王智伟彭毅蔡慧华史磊
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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