Solar Cell

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Peter Glaser – Professional

Glaser’s areas of professional activity have included solar and arc imaging furnaces, high temperature research, solar power satellites, solar heating and cooling, photovoltaic conversion, rural electrification systems using renewable resources, lunar surface missions, commercial space power, remote sensing, extra-vehicular activity on the moon, launch site selection, space station habitation module appliances, advanced space transportation devices, [...]

Direct current – Applications

Direct-current installations usually have different types of sockets, switches, and fixtures, mostly due to the low voltages used, from those suitable for alternating current. It is usually important with a direct-current appliance not to reverse polarity unless the device has a diode bridge to correct for this (most battery-powered devices do not). DC is commonly [...]

Suzlon One Earth – Design

Designed by architect Christopher Charles Benninger it recycles hundred percent of the water it uses, employs roof gardens and insulation for passive cooling and it generates 154 KW of energy on site through a combination of windmills (80%) and photovoltiac panels (20%). All water heating is accomplished through solar heating. Aluminum louvres shade the glass [...]

Energy policy of the United States – Energy consumption

Buildings and their construction consume more energy than transportation or industrial applications, and because buildings are responsible for the largest portion of greenhouse emissions, they have the largest impact on man-made climate change. The AIA has proposed making buildings carbon neutral by 2030, meaning that the construction and operation of buildings will not require fossil [...]

Spectrolab – Introduction

Energy Efficiency

Spectrolab, headquartered in Sylmar, California, is a subsidiary of The Boeing Company that manufacturers space solar cells and panels. It is also a subsidiary of the Boeing Satellite Development Center, which is a unit of Boeing Integrated Defense Systems. It was founded in 1956 by Alfred E. Mann, who has gone on to become a [...]

Photovoltaics – Introduction

Solar Power

Photovoltaics (PV) is a method of generating electrical power by converting solar radiation into direct current electricity using semiconductors that exhibit the photovoltaic effect. Photovoltaic power generation employs solar panels comprising a number of cells containing a photovoltaic material. Materials presently used for photovoltaics include monocrystalline silicon, polycrystalline silicon, amorphous silicon, cadmium telluride, and copper [...]

Solar cell – Solar cell efficiency factors

Energy Efficiency

Energy conversion efficiency Main|Energy conversion efficiency A solar cell’s ”energy conversion efficiency” (eta, “eta”), is the percentage of power converted (from absorbed light to electrical energy) and collected, when a solar cell is connected to an electrical circuit. This term is calculated using the ratio of the maximum power point, ”Pm”, divided by the input [...]

Tees Barrage – Barge Lock

Tidal Power

The lock is a single-rise lock with two pairs of lock gates to allow light river traffic to negotiate the barrage. The dimensions of the lock are length 24.88& m, beam 6.08& m, height 5.37& m with a draught of 2.48& m. If necessary, when the lock is in use, a single leaf steel bascule [...]

Photovoltaic array – Introduction

Solar Power

photovoltaic array is a linked collection of photovoltaic modules, which are in turn made of multiple interconnected solar cells. By their modularity, they are able to be configured to supply most loads. The cells convert solar energy into direct current electricity via the photovoltaic effect. The power that one module can produce is seldom enough [...]

Multijunction solar cell – Introduction

Energy Efficiency

multi-junction solar cells are currently the most efficient solar cells. Huge efforts have been made to improve the production of renewable energy. One of the most promising technologies is photovoltaic solar panels which convert solar energy into electrical energy. The first solar cell was a c-Si solar cell realised in 1954 by researchers at Bell [...]

ARPA-E – Funding and Awards

Geothermal energy

DOE awarded $151 million in American Recovery and Reinvestment Act funds on October 26 for 37 energy research projects under the ARPA-E. More than 3,600 initial ARPA-E concept papers were submitted to the first competitive merit review by experts and this first round of grants will go to researchers and inventors in 17 states and [...]

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