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PRACTICAL HEAT PUMPS IN COLD CLIMATES - AN ENABLING TECHNOLOGY

机译：寒冷气候中的实用热泵-一项启用技术

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摘要

The on-going development of a compact centrifugal compressor as a first stage or pre-compressor for cold climate operation of heat pumps is described. Positioned in the low pressure vapor portion of the refrigerant loop, this compressor will, on cold days, operate automatically to boost refrigerant pressure, in a manner similar to the way an automotive supercharger pressurizes air. The single stage motor driven centrifugal compressor runs on oil-free bearings. It is being configured to work in concert with a traditional heat pump compressor. The goal of this work is to enable air source heat pumps to efficiently extract heat from even the coldest ambient air without backup heat and without changing refrigerant type or the basic design of the positive displacement style compressors widely used in today's heat pumps. Doing so will allow air source heat pumps to operate effectively in virtually all major population centers. To date, a first article supercharger has been designed and built, and its performance mapped. Work to integrate it with a commercially available positive displacement (PD) heat pump compressor is underway.
机译：描述了紧凑型离心压缩机作为热泵的寒冷气候运行的第一级或预压缩机的持续发展。该压缩机位于制冷剂回路的低压蒸汽部分，在寒冷的日子，将以与汽车增压器加压空气相似的方式自动运行以提高制冷剂压力。单级电机驱动离心压缩机在无油轴承上运行。它被配置为与传统的热泵压缩机协同工作。这项工作的目的是使空气源热泵即使在没有备用热量的情况下也能从最冷的环境空气中有效地吸收热量，而无需更改制冷剂类型或当今热泵中广泛使用的容积式压缩机的基本设计。这样做将使空气源热泵在几乎所有主要人口中心都能有效运行。迄今为止，已经设计并制造了第一款增压器，并对其性能进行了映射。正在将其与市售的容积式（PD）热泵压缩机集成在一起的工作。

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