Renewable energy used for refrigeration applications has become essential very recently due to the fossil fuel crisis and global warming problem. Moreover, using photovoltaic PV generate electricity than inverters storage represents a high-cost process. This study aims investigate opportunity of output directly operate system. The absorption system uses heat as an source generator that drives d...

Low-temperature energy systems are processes that require cooling at temperatures below ambient, which are accomplished using refrigeration cycles. Little research has addressed the operational optimisation of refrigeration cycles considering the performance of existing equipment. This work develops a methodology for operational optimisation of refrigerated processes, taking into account existi...

Display cases in supermarket systems often exhibit synchronization, in which the expansion valves in the display cases turn on and off at exactly the same time. The study of the influence of switching noise on synchronization in supermarket refrigeration systems is the subject matter of this work. For this purpose, we model it as a hybrid system, for which synchronization corresponds to a perio...

Refrigeration is one way to maintain the temperature of a material or room at lower level than ambient conditions around it by absorbing heat from room. The refrigeration system that widely used today for industrial purposes use vapor compression cycle, where in this cycle components has an important role compressor. Over time, performance compressor will decrease, so affect absorption process ...

The output of the absorption refrigeration system driven by exhaust gas is unstable and efficiency low. Therefore, it necessary to keep performance systems in a stable state. This will help predict dynamic parameters thus control system. paper presents machine-learning algorithm for predicting key an ammonia–water Three new algorithms, Elman, BP neural network (BPNN), extreme learning machine (...

Cogeneration can improve energy utilization efficiency significantly. In this paper, a new ammonia-water system is proposed for the cogeneration of refrigeration and power. The plant operates in a parallel combined cycle mode with an ammonia-water Rankine cycle and an ammonia refrigeration cycle, interconnected by absorption, separation, and heat transfer processes. The performance was evaluate...