一个用太阳能驱动的新型吸收制冷循环

STUDY ON A NEW ABSORPTION REFRIGERATION CYCLE USING SOLAR ENERGY

提出了一个由太阳能驱动的新型吸收制冷循环。论文将热变器原理用于吸收制冷，从而大大提高了吸收制冷的循环效率。详细介绍该新型循环的热力学模型，同时以一个典型的太阳日照为例，计算了新循环的性能系数（ＣＯＰ）、冷凝热、理论极限制冷温度和制冷量，并与传统循环进行了比较。结果表明，新循环不仅克服了传统循环在热源工况不稳定时将导致系统工况不稳定甚至不能工作的缺点，而且还具有更高ＣＯＰ值。

A new type of absorption refrigeration cycle co--driven both by solar energy and electricity was proposed. The principle of heat transformer was applied to the absorption refrigeration so as to make the efficiency more perfect. In this paper, a thermodynamicmodel describing the performance of the new cycle was built up. A computer program wasworked out to realize the model. The COP, heat load. of condenser, the theoretical minimumevaporating temperature and refrigeration capacity for a typical daily trend of the systemwere calculated and compared with those of traditional absorption refrigeration. The resultsshow that the new cycle not nloy overcomes some shortcomings of the traditional ones withunsteady capacity due to the variation of the heat sources, but also increases the coefficient ofperformance.