Optimization of Refrigeration Plant Operation Engineering Ap
Optimization of Refrigeration Plant Operation Engineering Approach (2010)-For years, many professional engineers focused on the design of energy efficient refrigeration plants. Although a well-designed refrigeration plant is the foundation of energy savings, the efficient operation of a refrigeration plant is the ultimate goal of the energy saving process in industrial refrigeration. Through efficient operation, up to 70•80% of total energy savings can be achieved. Ideally a refrigeration plant control should have: œ Software to determine optimum set points and optimum operating strategies. œ A PLC to implement these set points and operating strategies. There are several PLCs on the market which canproperly implement certain set points and operating strategies. But software that is capable of determining optimum set points and optimum operating strategies does not exist because it is very complicated to create this type of software. Who should determine these set points and operating strategies? Typically this job is given to system operators. They have often done their best to optimize the operation of the refrigeration plants but several typical mistakes are often made during the optimizations. To maximize efficiency of the refrigeration plants, optimization should be focused on major energy saving measures. The best way to save energy is to operate refrigeration plants at condensing pressures as close as possible to the optimum pressures. Other energy saving measures that can be accomplished are: optimization of suction pressure, optimization of defrost settings, use of VFDs, optimization of compressor sequencing, and remote tuning. The nuances of each of these ideas is discussed including the misconceptions, hesitance to implement, and solutions to common missteps in the process.
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