Showing papers in "Energy Conversion and Management in 1985"

TL;DR: In this paper, the performance of a built-in storage type water heater containing a layer of PCM-filled capsules at the bottom is investigated with a view of getting hot water during off-sunshine hours.

TL;DR: In this paper, a simple analytical model of open sun drying and a cabinet type drier is presented, and an extensive experimental study of the two methods of drying has been conducted on typical summer days (1-2 June) of the New Delhi climate during 1982.

TL;DR: A simple straightforward analysis of a single basin solar still with an intermittent flow of waste hot water through the basin has been presented in this article, where the effect of water flow over the glass cover has also been incorporated in the analysis.

TL;DR: In this article, the authors studied the relationship between monthly-average daily radiation and bright sunshine hours for 11 Indian stations and found that the global radiation can be predicted to an accuracy of 0.5% by using the linear relation, G/Gext = a + b (n/N).

TL;DR: In this article, the performance of closed cycle disk MHD generators using argon, helium and an argon-helium mixture under the concept of fully ionized seed was compared.

TL;DR: In this article, five different schemes are presented to estimate the hourly radiation incident on surfaces of different tilts and orientations, and the important aspects of all correlation studies are highlighted and the relative merits and demerits of their results are brought to light.

TL;DR: In this article, the effects of heat transfer through walls and roof, heat conduction to the basement ground and furnishings, heat gain through window and heat loss due to air ventilation have been incorporated in the periodic time-dependent heat transfer analysis.

TL;DR: In this article, a straightforward transient analysis of a double basin solar still was presented, incorporating the effect of water flow over the glass cover and flow of hot water in the lower basin by a flat plate collector.

TL;DR: In this article, a double effect generation absorption refrigeration cycle for solar air-conditioning is proposed, which consists of a second effect generator between the generator and condenser of the single effect absorption cycle and two solution heat exchangers between the absorber and the two generators.

TL;DR: In this paper, the correlations of Page, Liu and Jordan, and Iqbal were employed to predict the monthly mean daily diffuse solar radiation in Cairo, however, it was found that the coefficients used in these correlations were not applicable in the case of Cairo.

TL;DR: In this paper, a hot box type solar cooker having a double glass cover and a plane mirror reflector has been tested for its thermal performance in different months in Delhi and the data suggest that modifications are needed in the cooker design if it is to be used satisfactorily throughout the year in Delhi.

TL;DR: In this article, an optical and thermal analysis of a solar cooker augmented with a planar reflector is presented, and the transient behavior is elucidated for a typical winter (2 December 1983) day.

TL;DR: In this article, a preliminary design of four MHD generators was made, of which the thermal input and electrical output were about 110 and 10-12 MW, respectively, and the effects of temperature fluctuations, given at the entrance, were examined over a wide range of fluctuation frequency.

TL;DR: In this paper, a latent heat storage material for trichlorofluoromethane (CCl3F, R11) heptadecahydrate, which melts at 8.5°C with a heat of fusion of 274 kJ/kg (65.4 cal/g), was investigated.

TL;DR: In this paper, the effect of storage volume/collector area ratio, number of glazings and mode of operation on the heater's performance was experimentally investigated, and the results showed that best performance could be obtained by drawing off all heated water into a separate storage as soon as it reached a pre-set temperature level (in this study 35°C).

TL;DR: In this article, an experimental investigation along with a theoretical model of a double-glazed flat plate solar air heater connected in series with an integrated rock bed collector-cumstorage unit is presented.

TL;DR: In this article, a simple mathematical model of a greenhouse system whose top surface is covered by a solar still is presented, and the effect of various parameters such as relative humidity, ventilation/infiltration, heat capacity of basin water and plants, thickness of roof and water distillate output on the performance of the greenhouse system has been studied.

TL;DR: In this paper, global irradiances incident on a horizontal surface are estimated from the bright sunshine hour measurements over Turkey, and their components on daily and hourly bases are computed for the surfaces with any inclination and orientation.

TL;DR: In this article, a two-stage vapour absorption refrigeration system employing the refrigerant absorbent combinations of NH3-H2O and NH3 -LiNO3 was investigated.

TL;DR: In this paper, the effect of the dust haze prevalent at this time is evaluated and the predicted solar radiation, using the above relationship, compares well with measured values with an error of 0.07.

TL;DR: In this paper, an economic analysis of a G.I. sheet multi-wick solar distillation plant is presented taking into account the various factors, viz. the lifetime of the system, salvage values, interest rate and maintenance cost.

TL;DR: In this paper, a general form of availability efficiency, efficiency of a process based on the available energy analysis, is reduced to suitable forms for equipment like a heat exchanger, separator, heat engine, furnace, coal gasifier, turbine, compressor, heat pump and refrigerator.

TL;DR: In this article, the operating temperatures of linear solar concentrators for optimum power output have been calculated considering the operating temperature, emissivity of absorber and wind velocity dependence of the heat loss factor.

TL;DR: The results of experiments performed on two non-porous solar absorber solar air heaters with and without fins have been reported in this article, where the experiments were performed under laboratory conditions.

TL;DR: In this article, a site-specific study has been carried out on the economics of commercial, hybrid solar and solar coal-gasification plants of 107 GJ/yr capacity located at a coal field near Edmonton, Alberta.

TL;DR: In this paper, various design concepts of solar water heaters for intermittent use and a new concept of continuous water supply are reported. But the authors highlight technical difficulties encountered in these designs and upgrade the state of the art in solar liquid heaters by proposing and testing different prototypes for a long period of time.

TL;DR: In this article, the turbine-pump system, installed across irrigation structures, is considered, where the available low-head energy is used to drive a turbine connected to a pump, to lift water for irrigation or domestic purposes.

TL;DR: In this article, the authors presented a time-dependent heat and mass transfer analysis of an open roof surface as a solar collector-regenerator system for absorption air-conditioning.

TL;DR: In this paper, the absorption spectra of multilayer structures have been obtained and analyzed in the wavelength range 0.5-10 μm, where M is a thin metallic layer sandwiched between two semiconducting layers.

TL;DR: In this article, data obtained from an experimental roof pond building showed that the summer performance of such a building can be further improved by allowing vapours to escape from the roof into the atmosphere.