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The application of anti-freeze on liquid-flow window was studied. Its thermal performance was evaluated in the seven climate regions of China. Laboratory tests were first carried out with propylene glycol as the working fluid. The measured results also served for numerical model validation. Then year-round energy performance was predicted for one representing city in each of the seven climate regions...
This paper presents an economical evaluation and parametric optimization on subcritical ORC (organic Rankine cycle) system for recovering the low-temperature waste heat of flue gas which is released from industrial boilers. First, the effects of the PPTD (pinch point temperature difference) in evaporator and condenser, and evaporating temperature on the system performance are examined with the EPC...
This work for the first time uses a three-dimensional multi-physics model to optimize the performance of three kinds of two-stage TECs, connected electrically in series, in parallel, and separated, respectively. The optimizations are performed for the two-stage TEC with 30 thermoelectric elements. The number ratio and current ratio are searched to reach the optimal cooling capacity, COP, and maximum...
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