The role of a pre-cooler is critical to the sCO2-BC as it not only acts sink but also controls conditions at main compressor’s inlet that are vital cycle’s overall performance. Despite their prime importance, studies on pre-cooler’s design hard find in literature. This partly due unavailability data around complex thermohydraulic characteristics linked with operation close point. Henceforth, cu...

Abstract This work aims to present the development and testing of an innovative tool for surge prevention in advanced gas turbine cycles. The presence additional components, such as a saturator humid cycles, heat exchanger external combustor, solar receiver or fuel cell stack hybrid system, implies larger size volumes between compressor outlet recuperator expander inlet. large volume increases ...

As a result of their unique heat recovery properties, Humidified Gas Turbine (HGT) cycles have the potential to deliver resource-effective energy to society. The Evaporative Gas Turbine (EvGT) Consortium in Sweden has been studying these types of cycles for nearly a decade, but now stands at a crossroads, with commercial demonstration remaining. This thesis binds together several key elements f...

The development of scientific and technological progress has led to the creation many technical solutions for implementation in heat supply system. Such solutions, as a rule, are energy-saving, automated, positioned by manufacturers quick payback. Over time, cost such technologies decreases level acceptable most citizens. introduction inexpensive energy-saving is becoming more widespread. Heat ...

The following analysis is presented to serve as a preliminary design guide for micro turbine engine designers to consider the potential advantages of incorporating the Rampressor into their recuperated engine designs. It is shown that the increase in compressor efficiency and the shift in optimum pressure will increase the efficiency of the engine and lower the recuperator inlet temperature and...

Some modern projects of the new generation light sources use the conception of multipass energy recovery linac with split (CEBAF-like) accelerating structures [1 4]. One of the advantages of these light sources is the possibility to obtain a small bunch length. To help reduce it, the longitudinal dispersion should be non-zero in some arcs of the accelerator. However small deviations in voltages...

Conventional gas turbine generator sets consist of a high speed turbine coupled to a low speed alternator through a speed reduction gearbox. This is required to maintain the alternator output frequency at 50 Hz or 60Hz, as output frequency is directly proportional to speed. Since power is also directly proportional to speed, the conventional system is bulky and possesses a very large footprint....

A number of potential NASA missions could benefit from closed-Brayton-cycle (CBC) power conversion systems. The human and robotic mission power applications include spacecraft, surface base, and rover scenarios. Modeling of CBC subsystems allows system engineers, mission planners and project managers to make informed decisions regarding power conversion system characteristics and capabilities. ...

This paper describes design options and comparative results of new compressed air energy storage (CAES) technologies for electric utility applications. Results are based on a CAES technical scoping study for energy storage applications in the California grid. The results show that CAES allows less expensive night-time electric energy to be effectively stored and redelivered to the grid to repla...