نتایج جستجو برای: solar trough collector

تعداد نتایج: 132907  

2007
Gang Xiao

Parabolic trough[1] is the most mature technology for large scale exploitation of solar energy. Several power plants based on this technology have been operational for years, and more are being built. However, the current technology suffers from a too high installation cost. This high cost makes it very hard to compete economically with fossil energy without government subsidies, compromising t...

Journal: :journal of agricultural science and technology 2012
h. mortezapour b. ghobadian m. h. khoshtaghaza s. minaee

in this paper, the performance evaluation of a two-way hybrid photovoltaic/thermal (pv/t) solar collector was analytically and experimentally carried out. mathematical expressions for operating parameters in glass to glass and glass to tedlar pv/t solar collectors were developed and experimentally validated by a glass to tedlar pv/t solar collector system. also the influence of air flow rate on...

Journal: :transport phenomena in nano and micro scales 0
a.r. noghrehabadi department of mechanical engineering, shahid chamran university, ahvaz, i. r.iran e. hajidavaloo department of mechanical engineering, shahid chamran university, ahvaz, i. r.iran m. moravej department of mechanical engineering, shahid chamran university, ahvaz, i. r.iran

one of the effective methods to improve the thermal efficiency of solar collectors is using nanofluids as the coolant. the present study experimentally investigated the effect of sio2/water nanofluid with 1% mass fraction on the performance of a symmetric collector, i.e. conical solar collector. the conical solar collector with 1 m2 area and normal to the earth was tested in ahvaz, a city in th...

In the present work, a prototype of a new type of solar collectors, which called Direct Absorption Solar Collector, was built and its thermal performance is experimentally compared with conventional flat plate solar collector under transient and steady state conditions. Different volume fractions of multi wall carbon nanotubes in water and ethylene glycol mixture (70%:30% in volume) were used a...

In the present work, a prototype of a new type of solar collectors, which called Direct Absorption Solar Collector, was built and its thermal performance is experimentally compared with conventional flat plate solar collector under transient and steady state conditions. Different volume fractions of multi wall carbon nanotubes in water and ethylene glycol mixture (70%:30% in volume) were used a...

Journal: :international journal of nano dimension 0
sh. delfani department of installations, building and housing research center (bhrc), tehran, po box 13145-1696, iran. m. karami school of mechanical engineering, college of engineering, university of tehran, tehran, po box 14395-515, iran. m. a. akhavan bahabadi school of mechanical engineering, college of engineering, university of tehran, tehran, po box 14395-515, iran.

in the present work, a prototype of a new type of solar collectors, which called direct absorption solar collector, was built and its thermal performance is experimentally compared with conventional flat plate solar collector under transient and steady state conditions. different volume fractions of multi wall carbon nanotubes in water and ethylene glycol mixture (70%:30% in volume) were used a...

2000
M. Eck W.-D. Steinmann

This article presents the latest experimental results of the European DISS (DIrect Solar Steam) project. The experiments are subdivided into steady state and transient tests. The goal of the steady state tests is the investigation of the thermohydraulic phenomena of the occurring two phase flow, whereas the transient tests are needed for the controller design. The experimental results are compa...

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