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A Study about Turbine-driven Pump Applied in Surface Water Heat Pump System

Author: WangZuoJun
Tutor: LuJun
School: Chongqing University
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: Turbine pump Water source heat pump system Operating characteristics CFD simulation
CLC: S277.92
Type: Master's thesis
Year: 2008
Downloads: 51
Quote: 1
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Abstract


Energy shortage has become a worldwide problem of economic development of countries, therefore, open to the use of clean energy and sustainable development of HVAC technology is very urgent. The use of surface water resources in recent years is exactly the type of water source heat pump air conditioning HVAC air conditioning technology representatives. Open surface water source heat pump systems use pumps to extract surface water such as rivers and lakes directly fed into the plate heat exchanger or water processor directly into the unit heat exchanger run. The whole system is an open system, the pumps provide energy in addition to overcome along the pipeline loss and partial loss, but also to overcome the height difference of the gravitational potential energy. Due to these characteristics of the surface water source heat pump system, it can take advantage of the turbine to recover part of the energy. This project is to study a turbine pump device, and applied to a surface water source heat pump system with energy recovery and improve energy efficiency. This article is mainly through the theoretical model of the turbine pump design, analysis of its performance curve and then analyzes the stable operation of the turbine pump in various head and various load cases. The paper also analyzes the volute of the turbine pump device as well as the form of the draft tube; CFD analysis of several different types of spiral case and draft tube, and analyze them in the use of a more reasonable type. In this paper, Ryan Chongqing Tiandi project water source heat pump system is designed based on a theoretical model of the turbine pump. By reference to the traditional turbine pump design, designed this device running on water source heat pump air-conditioning system in the turbine pump. Selected turbine performance curves and pump performance curve, draw a comprehensive characteristic curve of the turbine pump. Derived turbine pump characteristic curve analysis the turbine pump efficiency and the use of the head when the head changes and load changes, come running strategy. In addition, according to the turbine spiral case and draft tube design methods designed two types of tail pipe of circular cross-section and rectangular cross-section of the two types of volute straight cone draft tube elbow draft tube. By computational fluid dynamics analysis of stream channel characteristics. Uniform speed variance measure volute outlet, and select the appropriate type of volute. Speed ??through the analysis of the draft tube and pressure curves, choose the right type of tail pipe. Finally, the future direction of research about the turbine pump, turbine pump design parameters on the performance impact to guarantee that it is better adapted to the variable conditions, the CFD simulations of the whole flow passage of the turbine pump and water wheel Study of the mounting position of the pump.

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CLC: > Agricultural Sciences > Agricultural Engineering > Irrigation and water conservancy > Irrigation and drainage > Drainage and Irrigation Machinery and equipment > Pump irrigation equipment
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