Showing papers in "Energy Conversion and Management in 1986"

TL;DR: In this article, the theory of wick-type solar distillers has been modified and the effects of climatic, design and operating conditions on the modified factor have been investigated experimentally.

TL;DR: In this article, cost analyses of three types of solar stills, viz. a single-slope fiber-reinforced plastic (FRP) still, a double-SLope FRP still and a doubleslope concrete still, have been presented.

TL;DR: In this paper, the authors have investigated means for food preservation using processes suitable for implementation in rural areas, where energy resources are scarce, and fabricated different types of solar dryers.

TL;DR: In this article, a new design of a collection-cum-storage water heater integrated with the dome of conventional Indian (KVIC) biogas units has been proposed and studied theoretically.

TL;DR: In this article, the authors present a design and mathematical model for a winter greenhouse at Leh, Jammu and Kashmir in India, where the ambient air temperature, in winter, dips down to −30°C and goes up to a maximum of about 25°C in summer.

TL;DR: In this article, a review on solar energy concentrators includes all existing concentrator types and specific aspects covered are design, fabrication, optical and thermal performance, testing, tracking, non-tracking and material requirements.

TL;DR: In this paper, a new box-type solar cooker with a single reflector at the hood is presented, where the base of the oven acts as the lid, unlike the conventional box type solar cooker.

TL;DR: In this paper, the economic feasibility of using a simple box-type solar cooker has been studied following simple engineering economics and the results of some typical numerical calculations are presented graphically and discussed.

TL;DR: In this article, a modular, easy on-site construction, low-cost solar still was designed and tested and its annual average daily productivity and efficiency values were 2.35 l/m 2 and 30%, respectively.

TL;DR: In this article, a split-system solar cooker is described which has its flat-plate collector outdoors and the cooking chamber inside the kitchen, with heat pipes transferring the energy between the two.

TL;DR: In this article, the authors investigated the use of planar reflectors which substantially improved the performance of flat-plate solar collectors, including a collector panel and a collector-reflector system with maximum useful heat gain.

TL;DR: In this article, the first phase of the study of the effective installation of solar water heaters and heating of swimming pool water at a high altitude in northern India is described, where collector specifications, structural designs, various losses and other useful parameters have been calculated for efficient operation of the system.

TL;DR: An economic analysis of biogas as a source of energy to the pumpless LiBrH 2 O absorption system has been carried out in this paper, where the generator temperature and pressure, evaporator temperature, precooler and preheater effectivenesses were used as system variables.

TL;DR: In this article, the performance of a corrugated-plate solar air heater was investigated experimentally, and the collector was tilted at 20° in summer and 40° in winter for maximum heat collection during the period of maximum solar irradiance.

TL;DR: In this paper, a detailed theoretical comparison between three different analytical models proposed to simulate the thermal behavior of solar ponds is presented, where the optimum thickness of the nonconvective layer and the thin upper convective layer (fresh water) and their effects on pond performance at a given ambient temperature, isolation and storage temperature are calculated using all the models.

TL;DR: In this paper, an explicit expression for the temperature of air, flowing through the channel of a suspended flat-plate solar air heater, has been developed as a function of time and space co-ordinates.

TL;DR: In this paper, a parametric study of salt-gradient solar ponds of size less than 100 m2 is presented, based on a dynamic model of the pond which takes into account the variation of solar radiation, ambient temperature and the amount of heat extracted with time.

TL;DR: In this article, the characteristics of wind speed data for three recent years, recorded at 14 stations of the Bangladesh Meteorological Department, have been studied, and the data have been used to compute the monthly average wind speed and the wind energy availability for the stations.

TL;DR: In this paper, appropriate sizes of sunshade overhangs over windows of different orientations have been calculated so that no direct sun radiation penetrates through them for a period from 22 March to 22 September at New Delhi (latitude 28°35′N).

TL;DR: The heat pipe is an innovative engineering structure characterized by its capacity to transfer large quantities of heat through relatively small cross-sectional areas with very small temperature differences; it also possesses high thermal conductance and low thermal impedance.

TL;DR: Based on transient analysis, an explicit expression for the temperature of water (flowing in the basin), as a function of time and space coordinates, has been developed as discussed by the authors, and the effect of inlet water temperature, velocity of flow, depth of water etc.

TL;DR: In this article, a simple straightforward transient analysis of the rise in the plate temperature of normal and reverse flat-plate collectors has been presented, and good agreement between the theoretical results obtained by the present model and the experimental observations of Madusudan et al. has also been observed.

TL;DR: In this article, a theoretical model was developed to predict the performance of thermosyphon solar domestic water heaters with a heat exchanger in the storage tank (indirect heating), under various load conditions.

TL;DR: In this article, a least square regression analysis was used to predict the heat loss factor of evacuated tubular receivers as a function of variables involved (absorber temperature, emittance, diameter and wind loss coefficient).

TL;DR: A straightforward transient analysis of a shallow solar pond (SSP) water heater fitted with a baffle plate has been presented in this article, where numerical calculations have been made for a typical cold day in Delhi, viz. 18 Dec. 1984.

TL;DR: In this paper, a two-stage intermittent solar refrigeration system is described and the successful operation of the cycle under such conditions depends upon the proper selection of the initial solution concentrations in high and low pressure generators and the volume ratio of the generators.

TL;DR: In this article, the status of energy accounting and control systems in industry within energy management systems and organizations was assessed, their main features were analyzed, and some factors influencing their efficiency were discussed.

TL;DR: In this paper, the solar radiation received by the five main design types of concentrating collectors for the conditions of Turkey is analyzed. And the results are presented for the six climatologically different stations which are representative of the country's conditions.

TL;DR: A generalized thermal analysis of tubular solar collectors such as the CPC, CPC with bare absorber and flat-plate (all having U-tube fluid carriers) is presented in this paper.

TL;DR: In this article, a fixed spherical reflector tracking absorber solar collector, popularly known as fixed mirror distributed focus (FMDF) collector, is described and an analysis has been performed to study the variations in optical concentration along the absorber.