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How do you discharge an AC compressor capacitor? 

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This paper presents an electrolytic capacitor-less variable speed drive system for the compressor of an air-conditioner to enhance cost and size competitiveness and reliability.
Numerous advantages in comparison to known devices for neutralizing aerosols with corona discharge could be achieved by using an AC voltage and an optimized charger geometry.
There is an optimal discharge pressure with respect to the minimum endogenous exergy destruction in the compressor.
The possibility of a reduction in the work of compression may leads to enhance the compressor suction and discharge characteristics and the overall performance of the refrigeration system.
The system analysis shows that this refrigeration system can effectively improve the COP by the ejector cycle with the refrigerant which has high compressor discharge temperature.
The proposed cycles exhibit a reasonable value of COP (coefficient of performance) with a much less value of compressor discharge temperature, compared to the conventional cycles.
This paper shows how such effects in the discharge chamber are influenced both by the compressor operating conditions and its geometric characteristics.
The proposed model is detailed enough to account for the important phenomena influencing the suction and discharge mass flow rates and the electrical power drawn by the compressor, but simple enough to be usable for different reciprocating compressor designs with readily available data from manufacturers.
It is concluded that all the three methods show excellent potential in decreasing the discharge temperature of R32 scroll compressor.
It is practically significant to conduct the study of the correlation between discharge characteristics and ac-dc ratios.

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