关键词:

电气化, 水源热泵, 磁悬浮热泵, 无油磁悬浮轴承, 高效节能

Abstract:

To make effective use of waste heat resources，different oilfield enterprises use heat pump and other technologies to replace oil and gas-fired boiler，and use waste heat of produced fluid for heat supply of oilfield production and living system. Heat pump has gradually found its application in oilfields. As the only moving part in heat pump system，compressor is the heart of heat pump. Magnetic levitation centrifugal compressor uses advanced magnetic levitation and DC frequency conversion technologies，which can greatly improve unit capacity. To investigate the impact of compressor on COP of water source heat pump and provide reference for model selection of water source heat pump，a case of actual use of waste heat of effluent is used for model selection and comparison of water source heat pump. The results indicate that while the COP of conventional screw compressor heat pump is only 2.4 in terms of waste heat utilization，the COP of magnetic levitation heat pump can reach 3.54，which is higher than the COP standard for waste heat utilization of water source heat pump and 32% higher in energy conservation rate than the original screw compressor heat pump. Counted by unit price of electricity bill of 1.0 yuan/（kW·h），it can save operating power charge of 117.33×10⁴ yuan on a yearly basis. With higher COP，load regulation performance，reliability and stability than other heat pump technologies，the magnetic levitation heat pump can reduce on-site maintenance at the same time，which is more suitable for field application in oilfields.

Key words:

electrification, water source heat pump, magnetic levitation heat pump, oil-free magnetic bearing, high efficient energy conservation