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Recovery Act: Development of a High Performance Cold Climate Heat Pump, Reporting Period Ending: 12/31/2013.


DE141133089

Publication Date 2013
Page Count 79
Abstract The primary goals of the proposed project were to develop, test, and evaluate a high performance and cost-effective vapor compression air-source heat pump for use in cold climate regions. Vapor compression heat pumps are a proven technology, and have been used for many years to meet heating requirements for buildings in residential, commercial, and industrial applications. However, in climate regions that experience very low outdoor ambient temperatures both the heating capacity and coefficient of performance (COP) of traditional air-source vapor compression heat pumps drops dramatically with a decrease in the outdoor air temperature. The efficiency of heat pumping equipment has improved substantially over the past 20 years; however, the efficiencies of the highest rated equipment on the market are approaching practical limits that cannot be surpassed without modifications to the basic cycle and possibly the use of additional hardware. In this report, three technologies to improve the efficiency of vapor compression systems are described. These are a) vapor injected compression, b) oil flooded compression and c) hybrid flow control of the evaporator. Compressor prototypes for both, oil flooded and vapor injected compression were developed by Emerson Climate Technologies. For the oil flooded compressor, the oil injection port location was optimized and an internal oil separator was added using several design iterations.
Keywords
  • Heat pumps
  • Cold climate
  • Buildings
  • Cost effectiveness
  • Energy efficiency
  • Heating systems
  • Market
  • Performance evaluation
  • Recovery Act
  • Temperature range
Source Agency
  • Technical Information Center Oak Ridge Tennessee
NTIS Subject Category
  • 97J - Heating & Cooling Systems
  • 97G - Policies, Regulations & Studies
  • 55C - Meteorological Data Collection, Analysis, & Weather Forecasting
Corporate Authors Purdue Univ., West Lafayette, IN.
Document Type Technical Report
NTIS Issue Number 201425
Recovery Act: Development of a High Performance Cold Climate Heat Pump, Reporting Period Ending: 12/31/2013.
Recovery Act: Development of a High Performance Cold Climate Heat Pump, Reporting Period Ending: 12/31/2013.
DE141133089

  • Heat pumps
  • Cold climate
  • Buildings
  • Cost effectiveness
  • Energy efficiency
  • Heating systems
  • Market
  • Performance evaluation
  • Recovery Act
  • Temperature range
  • Technical Information Center Oak Ridge Tennessee
  • 97J - Heating & Cooling Systems
  • 97G - Policies, Regulations & Studies
  • 55C - Meteorological Data Collection, Analysis, & Weather Forecasting
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