The van der Waals interaction potential was calculated using the following (Elimelech and Omelia 1990): V_{VdW} = - frac{{Aa_{p} }}{6h} left( {1 + frac{14h}{lambda }} right)^{ - 1} (5)where A is Hamaker constant for bacteria-water-surface collector (6.5 × 10−21 J for quartz), and λ is characteristic wavelength of the dielectric (m).
Average temperatures from the top/rear PV surfaces, the collector back wall surface and the collector inlet/outlet temperatures were experimentally recorded under different fin numbers (0 4), mass flow rates (0.02 kg/s–0.14 kg/s) and solar radiations (200 W/m20000 W/m200
The anodes were prepared as carbon film electrodes (CFE) by dropping cast procedure on GC surface (current collector).
This is important, for example, for Genesis Return Mission samples that have trapped solar wind atoms in the surface of collector plates of various materials.
The results of the simulation in terms of efficiencies, heat and electricity production and the main characteristics of the system (i.e. heat exchanger surface, solar collector area) are presented and discussed.
Borehole thermal resistance R b (m⋅K/W) is the effective thermal resistance of the volume between the inner surface of collector, in contact with the thermal carrier fluid, and the outer surface of the borehole, in contact with the ground (Figure 1).
The following parameters were measured in the course of study: intensity of solar irradiance falling on a vertical surface (the collector was installed in a vertical position according with the producer design), temperature and velocity of air flowing into the collector as well as the temperature and velocity of air flowing out of the device.
The system is sized in base of the weather data of a city in the centre of Italy in three different months (January ,March, July), and the main characteristics of the system (i.e. heat exchanger surface, solar collector area) are presented.
It has been also found that regardless of particle loading and bottom surface type, collectors with thinner nanofluid films always had a lower efficiency compared to collectors with thicker films.
For this purpose, a new type of distiller was obtained by making modifications, which enable us to obtain distilled water, on a solar still water heating system having flat-surface panel collector and vertical tank and operating as a closed system.
They are also expected to show enhancement over conventional surface-based collectors [21 25].
