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Energy analysis of an inverter air conditioner connected directly to photovoltaic solar panels.

Number: pap. 1092

Author(s) : AGUILAR F. J., ALEDO S., QUILES P. V.

Summary

In air conditioning systems there is a close correlation between the insolation and cooling needs. The use of photovoltaic panels (PV) for air conditioning systems (AC) is an attractive application because of the close relationship between the daytime cooling load and the availability of solar radiation. This paper presents an experimental study onan "inverter" air conditioner with a nominal power of 3.52 kW. Three 235Wpphotovoltaic panels are connected directly to the inverter of the air conditioners compressor at 24 Vcc. It is a technically optimal solution that does not require the installation of batteries and inverters. The air conditioner and the photovoltaic installation have been fully monitored. The measurements taken allow us to evaluate the following data: Electrical power consumed by the machine from the network and electrical power consumed by the machine from the photovoltaic panels. These data are integrated to provide daily and monthly electrical power consumption and the solar contribution in %. Measurements were carried out with the machine operating for 12 hours: 8 to 20 h. The results show that it is possible to get solar contributions higher than 50% in the summer months. The utilization of the energy produced by the panels depends largely on the demand where its performance can be optimized for solar contributions higher than 60%. The average EER evaluated by the relationship between useful thermal energy and the electricity consumed from the grid is close to 8.

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Pages: 10 p.

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Details

  • Original title: Energy analysis of an inverter air conditioner connected directly to photovoltaic solar panels.
  • Record ID : 30010483
  • Languages: English
  • Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Publication date: 2013/06/16

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