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Review of Case Materials
Reviews records, documents, testimony, data, and other relevant materials and consults with counsel regarding technical issues related to the matter.
Provide Expert Analysis
Applies specialized knowledge and experience to evaluate the technical or professional issues involved.
Form Expert Opinions
Develops independent, supportable opinions based on the available evidence and relevant standards.
Prepare Expert Reports
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Liquid refrigerant return, or floodback, occurs when refrigerant reaches a running compressor without being fully vaporized. Possible causes include excessive refrigerant feed, an improperly operating expansion device, inadequate evaporator airflow or heat load, evaporator icing, overcharging, or other conditions that produce insufficient suction superheat. The compressor and upstream refrigeration system should be evaluated together because the effects and acceptable operating conditions depend on the compressor design and application.
Superheat and subcooling help evaluate the condition of refrigerant at key points in a refrigeration system. Superheat is the amount by which refrigerant vapor temperature exceeds its saturation temperature at the measured pressure, while subcooling is the amount by which liquid refrigerant temperature is below its saturation temperature. When interpreted with system pressures, temperatures, equipment specifications, and operating conditions, these measurements can help evaluate refrigerant charge, evaporator feeding, condenser performance, and expansion-device operation. For zeotropic refrigerant blends, dew-point temperature is generally used to calculate superheat and bubble-point temperature to calculate subcooling.
A refrigerator may stop cooling even while the compressor is running if the refrigeration system cannot absorb or reject heat properly. Possible causes include refrigerant loss, a restriction in the refrigerant circuit or metering device, reduced compressor pumping performance, evaporator icing, inadequate airflow, condenser heat-rejection problems, or control-related issues. Pressure and temperature measurements, airflow checks, and component inspection can help determine whether the problem originates in the refrigerant circuit, airflow system, controls, or another appliance component.
Prepares clear, well-supported expert reports outlining methodology, analysis, findings, and opinions.
Provide Deposition Testimony
Explains findings and opinions under oath and responds to questioning during deposition testimony.
Testify in Court
Presents specialized findings and opinions clearly to judges, juries, arbitrators, or other decision-makers.
