This system is simple in design and installation, high system efficiency, etc. But because it is direct use of groundwater, water quality of groundwater the demand is higher, it is important to note that when using groundwater water quality. For coastal water quality and poor areas, to choose the corresponding corrosion of heat exchanger, because of copper in seawater corrosion resistance is very strong, pour - 5 appeared, the sea with the groundwater into the unit. The unit causes corrosion. In this case also can provide a source of heat through the heat exchanger units.

In the groundwater quality is good, enough water and water temperature below 35 ℃ in the summer, you can consider * of cold source of ground water is used as building directly, of course, this need in the design, construction, equipment at the end of the appropriate increase refrigeration (hot) abilities, can make indoor system engineering cost increase by about 10%, but for the floors high building is not suitable for all adopt the direct use of water cooling. Because of the higher floors is bound to requirements of the submersible electric pump head also is higher, so the high-rise building under the layers of refrigeration can be directly used to groundwater, groundwater after give below a few layers of cold source, water temperature rise 3-5 neon, to enter the water source heat pump units, the water as the cold source of the unit, through to the floor above the refrigeration unit.

Winter heating, ground water as water source heat pump system of heat into the unit after the release quantity of heat, temperature lowering, again through the injection side by side back to the ground, but is not suitable for use in groundwater temperature very low region.

(1) the plant water treatment

Not all gravel material in the underground aquifer well, aquifer of the particles, size is differ, small to a diameter less than, these small particles, the underground with the flow of water flow.

In the extraction of groundwater, needless to say, less than micron particles, is a few microns in diameter particles will exile with water pump suction. If not handled this portion of the particles will enter woven and circulatory system. With the increase of time, the particles in the system at the time of unit and sedimentary gradually increase, will cause the water source heat pump units heat exchanger and the circulating system of block c so groundwater must be processed before they can make it into the unit or system.

On groundwater for water treatment, mostly adopts spin desander and T filter, desander will by the water particles relative density of people in the water. But some relative density is less than or close to the water particles, sundry cannot be completely separated, it will be through the filter to filter out the impurities. For spin desander, thinks choose jsog spin desander is better, this race desander consists of two parts, collection of desander and separator, which can be installed at both. Volume than the commonly used taper spiral desander is much smaller (set desander and separator combined), save a space, installation is more convenient. By the inch; It has multiple rotating cavity, so teaching fruit is better than the conical spiral desander separation. T filter, filter is adopted is due T filter has big filter area, small water resistance, unpick and wash time interval is long.

(2) to give back to the well spacing

To the distance between the back well for cement for the stable operation of the heat pump units is very important. There are many influence factors to give back to the well spacing: give the depth of the well, to the thickness of the aquifer, give the structure of the aquifer and the surrounding geological structure will influence to the distance between the recharging Wells. If you give back to the small well distance, winter heating, groundwater into the heat source of heat pump units, temperature and reducing the back to back to Wells, soon to give Wells, renowned for well water temperature declining, resulting in a decline in the heating capacity of the water source heat pump units, can't even run. Summer cooling, just on the contrary.

Design too far distance, can increase area, increase the investment outside the pipe network, even in the range of allowable building can not be implemented.

Groundwater surface is stationary, the actual flow, k is the speed of the relatively diffuse, water in the ground also flow from high level to low level area. When determining water central air conditioning to give back to the well of water, should check the production, the surrounding where the highest water level, where the water level of the lowest, normally the factory from high level to low water place, if will be built to Wells in the side of the high water level, can be appropriate to reduce to the distance between the recharging Wells. Usually near the river can be determined according to the direction of river flow direction of groundwater.

Distribution, groundwater flow, of course, is very complex, it is like the river on the ground, originally is the east, can flow to a changed direction, this performance is most obvious in the mountains and water flow is winding down to the mountain. Also, we all have met or heard, in a certain area, the distribution of groundwater is very balanced, the water level of the same at every point, geological structure is completely the same. On the other, only a few meters away from the distance of the two Wells, can supply capacity but differ a lot. If you give back to the Wells in sew - 'a fracture, water is very fast, can't achieve the requirement of cooling and heating source of heat pump units. So, in the water source heat pump system design - need to know the local geology, and according to the geology type test Wells, while I was playing well test to record the different depth of geological structure, in order to determine the thickness of the aquifer, the heat storage capacity of the soil. If not widespread solutions for these conditions, can't calculate to give back to the distance between Wells, - 'denier to can not meet the requirements of the distance between the well and back. Cannot meet the system requirements of groundwater, result in the whole system can't normal use.