ShareOptimizing frost-free refrigerators
A team from the Federal University of Paraná and the Federal University of Technology – Paraná in Brazil has modelled and optimized a frost-free refrigerator aimed at both cost and energy savings.
A team from the Federal University of Paraná and the Federal University of Technology – Paraná in Brazil has modelled and optimized a frost-free refrigerator aimed at both cost and energy savings.
The task was performed on a 440-litre frost-free refrigerator designed for the Brazilian market and comprising a hermetic single-speed compressor running with HFC-134a as a working fluid and ISO-10 POE oil. Various components (compressor, condenser, evaporator and refrigerated compartments) were analysed . As energy and cost are trade-off design criteria (in order to reduce the first, the second might increase), optimization task was performed to minimize the energy consumption at a fixed cost.
The minimum energy consumption achieved was 18% lower than the baseline with no cost penalty, thanks to cost savings and performance enhancement based on the condenser and evaporator heat transfer surfaces, and the thickness of the insulation of the refrigerated compartments.
Simulation-based design and optimisation of frost-free refrigerators: a thermoeconomic approach, Cezar NEGRÃO (Federal University of Technology-Paraná) and Christian HERMES (Federal University of Paraná), Brazil, 14th International Refrigeration and Air Conditioning Conference at Purdue
This paper can be downloaded wia the IIR’s Fridoc database (free for IIR members within the framework of their quota of free downloads). You just have to login and search for the paper via Fridoc database (search column).
The task was performed on a 440-litre frost-free refrigerator designed for the Brazilian market and comprising a hermetic single-speed compressor running with HFC-134a as a working fluid and ISO-10 POE oil. Various components (compressor, condenser, evaporator and refrigerated compartments) were analysed . As energy and cost are trade-off design criteria (in order to reduce the first, the second might increase), optimization task was performed to minimize the energy consumption at a fixed cost.
The minimum energy consumption achieved was 18% lower than the baseline with no cost penalty, thanks to cost savings and performance enhancement based on the condenser and evaporator heat transfer surfaces, and the thickness of the insulation of the refrigerated compartments.
Simulation-based design and optimisation of frost-free refrigerators: a thermoeconomic approach, Cezar NEGRÃO (Federal University of Technology-Paraná) and Christian HERMES (Federal University of Paraná), Brazil, 14th International Refrigeration and Air Conditioning Conference at Purdue
This paper can be downloaded wia the IIR’s Fridoc database (free for IIR members within the framework of their quota of free downloads). You just have to login and search for the paper via Fridoc database (search column).