Water Suitability Evaluation of the Groundwater Source Heat Pump of Nanning City
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Abstract:
In order to identify whether the groundwater quality in Nanning is suitable for the development and utilization of water source heat pump，the water quality suitability evaluation indexes were selected which were related to the design and operation of the water source heat pump system based on the hydrochemical analysis of groundwater samples collected from the unconfined aquifer of Nanning city. The hierarchical structure model was developed using the Analytic Hierarchy Process (AHP) to determine the weights for each evaluation index, and the spatial analysis module of the GIS platform was used to obtain the water quality evaluation zonation of groundwater source. The results showed that the suitable area to develop water source heat pump is 280.7 km2 located mainly in the central part of Nanning city and Liangqing District. Due to that groundwater in these areas is almost neutral water with little hardness and has no harm to the pipelines and facilities, it is suitable for the development of groundwater source heat pump.
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