MULTIPLE-EFFECT HYBRID COOLING PROCESS WITH COABSORBENT CYCLES AND INSTALLATION FOR APPLYING SAID PROCESS

摘要

The invention relates to a cooling process and to an installation for applying said process which are meant to cool fluids. The claimed process carries out a hybrid coabsorbent cycle with n-effect, n 2, n N, which, in order to increase the efficiency, uses a process for depressurizing the desorption process in relation to the absorption process, both of low pressure, the absorbent of average concentration, generated by the mixture of absorbents resulting from low pressure processes, being internally preheated, supplies in parallel i, i=2,...,n, stages with isobar processes of generation and resorption with increasing pressure, higher than the lower pressure, provided between stages i + 1 and i, i=2,...,n-1, with gax cascades and with external heating for the generation process n, and the absorbents resulting from the generation and absorption processes are collected, internally undercooled, supplies the absorption and the desorption processes, respectively, and finishes the cycle. The claimed installation has a desorber (3) for external useful cooling, depressurized by means of a fan (23) in relation to an externally cooled absorber (4), both of low pressure, a mixer (5) for producing an absorbent (6) of average concentration from those resulting from the desorber and absorber, solution pumps (7, and 7,...,7) which supply with the absorbent resulting from the desorber (3) and the mixer (5), the mixer (5) and some isobar stages with increasing pressures i, i-2,...,n, with generators (9,...,9) and resorbers (10,...,10), gax loops (12,...12) for transferring the heat of the resorbers (10,...,10) to the generators (9,...,9), an externally heated generator (9), an externally cooled resorber (10), an externally cooled heat exchanger (15), a subcooler (22) for supplying the desorber (3), preheaters (8, 16,...16, 17) for the absorbent (6) of average concentration and collectors of the absorbent resulting from generators and resorbers which supply the absorber and the desorber, respectively.