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Evaluation of a Hybrid AC/DC Powered Residential Split-System Heat Pump Performance using a DC Nanogrid.

Number: No 311

Author(s) : ORE J., MERAL F., OBST O., KURTULUS O., GROLL E. A.

Summary

Many benefits have been observed from the employment of Direct Current (DC) distribution schemes over those of traditional Alternating Current (AC) within building architectures, ranging from enhanced system efficiency, increased reliability, reduced points of failure, and more convenient integration with renewable energy generation systems. The objective of this research is to demonstrate the emulation of a DC Nanogrid system supporting the largest categorical energy consumer in the residential building-space: the HVAC system.
Through the avoidance of unnecessary energy losses due to power conversion, a DC-driven heat pump affords a significant opportunity for energy savings and overall improved efficiency. This paper presents the results from laboratory testing a hybrid AC/DC powered air-source heat pump fashioned to operate separately on either an AC or DC electrical supply. The corresponding residential DC Nanogrid system is simulated with a psychrometric chamber integrating a variable voltage DC power supply. Initial psychrometric testing of both AC and DC configurations are presented, along with corresponding thermal and electrical performance analysis. Future work will consider individual characterization of the heat pump components under DC supply, comparison of line losses between AC and DC load conditions, and additional environmental heating and cooling test cases.

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Pages: 11 p.

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  • Original title: Evaluation of a Hybrid AC/DC Powered Residential Split-System Heat Pump Performance using a DC Nanogrid.
  • Record ID : 30030093
  • Languages: English
  • Subject: Technology
  • Source: 13th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
  • Publication date: 2021/08/31

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