Summary: TEHRAN (FNA)- Iranian researchers designed and launched a system which can boost efficiency of solar dish
collectors with the help of nanofluids.
Li, "Optical design of a solar dish
concentrator based on triangular membrane facets," International Journal of Photoenergy, vol.
Pye, "Numerical investigation of natural convection loss from cavity receivers in solar dish
applications," Journal of Solar Energy Engineering, vol.
Solar panels and mini-hydro generators are joined by thousands of greenhouses with trombe walls (sun-facing walls within the greenhouse that absorb heat during the day and radiate it out again at night), which will extend the short growing season and improve nutrition and livelihoods; solar dryers and agricultural pumping systems are aiding food production; metallic solar dish
cookers are saving kerosene; and solar passive architecture is enhancing space heating.
* The University of Colorado Boulder's nearly $780,000 will go toward developing a solar toilet that uses concentrated sunlight focused with a solar dish
to disinfect liquid and solid waste and turn it into biological charcoal that can replace wood charcoal or chemical fertilizers.
Other projects include using a solar dish
, comparing plant growth based on different regimes and requirements, for example sand, clay and soil with and without water.
A single solar dish
and Stirling engine system installed at Sandia National Laboratory's National Solar Thermal Test Facility produces as much as 25 kW of electricity, with a conversion efficiency of 31.25 percent.
The design specification of solar dish
concentrator are aperture diameter 2.53 m, rim angle 69[degrees], height of collector at optical axis of dish concentrator is 0.6 m and focal length 0.7m.
Feuermann and Gordon (1999) proposed solar fiber-optic mini-dish concentrators based on a miniaturized (e.g., 0.2 m diameter) solar dish
, which concentrates sunlight into a single optical fiber to transport power to a remote receiver, as illustrated in Figure 12.
The NSETC is an advance on CSIRO Energy Technology's initial solar dish
facility at Lucas Heights, developed between 1998 and 2000, and will be a more efficient and flexible system.
In a unique experiment, in which DBSA itself is the guinea pig, an 18 metre high solar dish
is being erected on open land near the bank between Johannesburg and Pretoria.