Case Study Retail Refrigeration – LPA Liquid Pressure Amplification

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The Thermodynamic Principles of LPA

Most current refrigeration and air conditioning systems waste 20% to 40% of

Model LPA® 860-SS-075

860-SS-075-B | 4 to 30 GPM | Max Head 50 feet PS

Case Study Retail Refrigeration – LPA Liquid Pressure Amplification

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A LPA® Liquid Pressure Amplifier was fitted to the high temperature rack of the Big Fresh Mt. Wellington store in New Zealand. The rack used four D4DA-1000 Copeland compressors and one 4DH-1500 giving a nominal capacity of 89.5 kW using R22 refrigerant. After installing the LPA the evaporator temperature rose by 6.4 ºC, indicating that flash vapour in the suction line had adverselyaffected the performance of the expansion valves. The measured energy saving was 32%.

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