<p class="abstrak">Solar energy is one of the most impactful renewable sources and has great potential compared to other sources. The use solar can be maximized by using panel technology collectors. One example a water heater. Polycarbonate good material applied heaters because it mechanical properties corrosion resistant. This study aims analyze performance polycarbonate heater with tric...

A CGS is of the most important parts in natural gas transmission pipelines in which the high inlet natural gas (NG) pressure is reduced to much lower value by employing a throttling valve. This pressure drop causes hydrate forming, preventing stable NG flow through the pipeline. To prevent hydrate forming, NG is usually preheated by heaters which burns remarkable amount of NG. In this work, a n...

Replacing fossil flues by renewable and sustainable energies have been the concern of scientists working in this area over the recent decades. Furthermore, greenhouses play a key role in producing various crops year-round and in bohemian climates. For this objective, the greenhouses employ heating, ventilating and air conditioning (HVAC) systems to provide the favourable conditions for the cons...

The scientific literature extensively mentions the use of a solar air heater (SAH) by utilizing energy for heating purposes. poor heat-transfer rate an SAH with flat plate is caused developing laminar sub-layer near heated base plate. temperatures improve significantly, resulting in losses and decrease performance. passive approach entails placement fins/turbulators/pouring material/ribs to sur...

In the context of a world energy crisis, only solution to control situation is in management energy. One most important keys optimization electrical components. This article presents complete numerical and experimental study aiming for water heaters household use. The conceives minimization consumption simultaneously with time heat water. Firstly, thermal model well adapted case constructed val...

in the present work the effect of cu-water nanofluid, as heat transfer fluid, on the performance of a parabolic solar collector was studied numerically. the temperature field, thermal efficiency, mean-outlet temperatures have been evaluated and compared for the conventional parabolic collectors and nanofluid based collectors. further, the effect of various parameters such as fluid velocity, vol...

Solar water heating system technology is described and the scale of the International solar water heater market is surveyed. New product developments for both direct solar water heating and solar boosted heat pump water heating are outlined. Procedures adopted by the International Standards Organisation for assessing solar water heater performance and quality are discussed.

A membrane-based gas humidification apparatus was employed to actively manage the amount of water vapor entrained in the reactant gas supplied to a fuel cell stack. The humidification system utilizes a gas bypass and a series of heaters to achieve accurate and fast humidity and temperature control. A change in fuel cell load induces a reactant mass flow rate disturbance to this humidification s...

This paper demonstrates the need and potential for using waste heat recovery (WHR) systems from infrared gas radiant heaters, which are typical sources in large halls, due to increasing energy-saving requirements buildings EU powerful wide-spread development of e-commerce market. The types heaters discussed classification WHR these devices is performed. article also presents first time our inno...

This article examines the issues of hydraulic resistance solar air heaters with concave tubes and reduction pressure losses, as well determination flow in installed working chamber heater discusses number common to reduce losses installation pipes give a swirling motion eliminate sharp decrease heat transfer process