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Experimental investigation of condenser with small diameter copper tube in air source heat pump water heater.

Number: No 334

Author(s) : WANG T., LIU Z., GAO N., FAN T., ZHAO H., GAO Y.

Summary

In this paper, a series of experimental tests on system coefficient of performance (COP) of air source heat pump water heater (ASHPWH) working with R22 were carried out. ASHPWH equipped the condenser which was wrapped around copper tubes with different inner diameters of 4.5 and 6.4mm and variable types of smooth tube and internal threaded tube. Besides, the economic cost of aforementioned systems were compared and analyzed. The results show that the system performance of ASHPWH with small diameter copper tubes of 4.5mm is improved compared with the large diameter copper tube of 6.4mm, meanwhile the total costs are greatly reduced. Given that the inner diameter is constant, the internal threaded tube has a significant improvement in system COP compared with the smooth tube. Moreover, COP of ASHPWH with internal threaded tubes whose inner diameter is 4.5mm can reach 4.17, therefore the small diameter copper tube has a good application prospect in ASHPWH. 

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Details

  • Original title: Experimental investigation of condenser with small diameter copper tube in air source heat pump water heater.
  • Record ID : 30030105
  • 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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