iran’s vast common natural gas resources and the necessity to extract and export it as liquefied natural gas (lng) to distances more than 3000km opens a lucrative field for researchers to optimize lng cycles. in this article heat integration in cryogenic cycles by determining interacycle partition temperature and optimizing refrigeration features like subcooler, presaturator, aftercooler, reboi...

At temperatures below 60?C, the best way to use geothermal sources for heating is heat pumps. A pump can provide air conditioning a residential, commercial, etc., all year round by in winter and cooling summer using low-temperature source. Also, be used water distillation through evaporation. The ground source with high COP thermal energy one of technologies renewable sources. In present study,...

Mechanical ventilation systems for controlling conditions in individual zones can move a constant or variable supply of conditioned air to handle all or some of the heating and cooling loads. They are classified as all-air, air-water, and all-water systems. All-air systems include single-duct, dual-duct and multizone. The systems can be designed to operate at Constant Air Volume (CAV) or Variab...

A commercially available computational fluid dynamics code has been used to simulate temperature and flow profiles in the upper, convective heat transfer region of a recovery boiler for different bullnose designs. The convective heat transfer region of the furnace was simulated by examining a zone that begins below the bullnose and ends at the economizer. Superheater tubes and a boiler bank wer...

Waste energy represents one of the most critical issues for economic utilization and management in modern industrial fields. This article outlines a scheme to utilize two different source temperature levels within envelope higher than 200 °C zones. Two regenerative organic Rankine cycles (RORC) were implemented construct compound cycle (CRORC) improve sources. These mini-cycles integrated throu...

Magnetically impelled arc butt (MIAB) welding is a solid-state technique of that utilizes the heating effect high-speed rotating for formation weld. The process exhibits lower time and power consumption compared to conventional processes tube–tube joining. However, available research reports on MIAB Mild Steel (MS)1018 are still inadequate lack details required extending applications this proce...

Avicins, a class of electrophilic triterpenoids with pro-apoptotic, anti-inflammatory and antioxidant properties, have been shown to induce redox-dependant post-translational modification of cysteine residues to regulate protein function. Based on (a) the cross-talk that occurs between redox and phosphorylation processes, and (b) the role of Stat3 in the process of apoptosis and carcinogenesis,...