Solar thermal electricity technologies are attractive alternatives to produce electricity by means of a renewable source. One of these technologies is parabolic trough collectors. In Spain, the sale of solar electricity to the national grid is primed. There are three main parameters that affect...

This paper presents the results of a study conducted at a rural (island) community to understand the role of PV hybrid system installed on an island. Until 2004, most islanders had installed diesel generators in their homes to generate electricity, which was directly supplied to appliances or...

Natural circulation solar water heating systems are available in varying collector geometries (and materials), storage tank capacities and specifications of individual components. Though theoretical and experimental studies including the test procedures are available to estimate the performances...

The diffuse radiation falling on a horizontal surface at Madras, India has been analysed and the results presented. Five years of data have been used for the analysis and a correlation has been established between the daily average diffuse radiation with the monthly average clearness index. It...

Renewable energy based technologies can be introduced for building cooling applications. Most studies on solar absorption cooling use fossil energy based auxiliary heaters. This paper presents experimental studies of a solar-biomass hybrid air conditioning system. The system performances at...

This paper describes a simple method of estimating daily utilizability (Φ) on a horizontal surface at Madras and Kodaikanal (two locations in South India). The daily utilizability has been derived from the cumulative frequency curves of IIm using five years of hourly global radiation data on a...

The monthly average daily totals of global solar radiation on a horizontal surface at Madras (13°0′N, 80°11′E) and Kodaikanal (10°14′N, 77°28′E) during the period 1983–1987 have been processed, analysed and presented. The regression coefficients, a and b, of Ångstrom linear type...