Performance Research On A Diffusion Absorption Cool Transformer

At present, reserves of conventional energy such as coal, oil, etc, are less and less but the demand is growing, and their consumption process is resulting in massive discharge of carbon dioxide and other pollutants. The indices of energy consumption and environmental impact are the most important standards as a measure of today's human activities. Therefore, energy saving and environmental protection have become all industries'fundamental development direction. The development of refrigeration systems driven by low grade energy and the improvement of their performance have become the important research content in refrigeration field.Based on the principle of cool transformer, a new diffusion absorption cool transformer was proposed in this thesis. Its cycle is composed of a diffusion absorption refrigeration sub-cycle and a mechanical compression refrigeration sub-cycle. Simulation and experimental researches were conducted on the cycle performance.Firstly, literatures of diffusion absorption refrigeration systems and research progress of cool transformers were reviewed. Next, a mathematical model for each component of a diffusion absorption cool transformer was established; a numerical calculation program was developed for the cycle process; simulation study of the influences of heating power, generation temperature, evaporation temperature and ambient temperature on the cycle performance was carried out. An experimental setup was designed and fabricated and experimental research on the system performance was conducted on it. The results indicated that it is feasible to use the principle of cool transformer to raise the efficiency and use low-grade heat efficiently for a diffusion absorption refrigeration system.Finally, some conclusions were summarized and several prospects for the future researches were put forward.