.... An improved mathematical model to evaluate the performance of the solar-operated LTDSE has been developed by incorporating the top heat loss coefficient correlation with the finite-time thermodynamic model of the Stirling engine. In order to realize the internal imperfections of the thermodynamic Stirling...

.... A brief summary of solar energy source and heat transfer equations for the Olympic pools are given. An Olympic swimming pool is assumed to be in different cities, and energy losses are calculated. For our sample Olympic pool, convective heat loss obtained is −3.86 kW and evaporative heat loss obtained...

... temperature. The thermal efficiency can be determined by testing the collector under actual operating conditions or by separately measuring these two components. This paper describes how outdoor measurement of the optical efficiency is combined with laboratory measurements of receiver heat loss to obtain...

.... The test results confirm the full functionality of the storage subsystem, the ability to perform cycling at high discharge heat rates and relatively low heat losses, supporting the view that the technology represents a promising basis for up-scaled implementations. Measurement data and simulation results...

... vacuum and thereafter suffer from significant convective heat loss. An alternative to this design is to use a vacuum pump to actively maintain low pressure in a long section of absorber with a continuous vacuum jacket. A detailed thermal model of such a configuration is needed to inform design efforts...

... on operating experience it has gained over the last two decades. Recently, researchers found that trough plants that use organic heat transfer fluids (HTFs) such as Therminol VP-1 are experiencing significant heat losses in the receiver tubes. The cause has been traced back to the accumulation of excess...

...Eckhard Lüpfert; Klaus-J. Riffelmann; Henry Price; Frank Burkholder; Tim Moss The heat loss of a receiver in a parabolic trough collector plays an important role in collector performance. A number of methods have been used to measure the thermal loss of a receiver tube depending on its operating...

... the indicated efficiency reduces because of the increase in the heat loss due to water vaporization and condensation processes. pumps solar absorber-convertors thermodynamics condensation vaporisation heat losses The force, which is proportional to the difference of the water levels in the hot...

... on top of the collector. This is an initial phase of the work and only winds aligned with the solar collector are investigated. In other words no influence of lateral winds is accounted for. The first experimental results proved very encouraging. It was observed a 12% heat-loss reduction in comparison...

...Viorel Badescu A solar stirling engine based on a horizontal selective flat-plate converter is analyzed in this work. A detailed model for the heat losses towards the atmosphere is presented. The engine’s output power is maximised numerically. The analysis is based on meteorological data measured...

...T. Taumoefolau; S. Paitoonsurikarn; G. Hughes; K. Lovegrove Natural convection heat loss inevitably occurs in cavity-type receivers in high concentrating solar dishes, downward focusing systems and solar towers. In most applications, it can contribute a significant fraction of total energy loss...

... over a predefined ratchet period. These high demand charges or ratchet percentages and a large differential between on- and off-peak energy rates make cool storage economically attractive. thermal energy storage optimal control ice power consumption load forecasting heat losses economics...

..., conductive, and radiative losses toward the ambient. It is important to assess the physical values of the vapor and the condensed water at the actual working conditions temperature. During evaporation the water in the basin gets colder due to evaporation and heat loss to the ambient. In order to maintain...

... anemometer/resistance thermometer measurements, to determine the heat loss to the air stream over the plate as a function of wind speed, suction velocity, and plate geometry. Both attached and separated flow regimes were observed, and the criterion for flow attachment was determined to be Re V 0 , P ⩾ 6.93...

.... The approach retains the convenience of the standard analysis while accounting for the unequal front/rear ambient temperatures and permits collector characterization in terms of the conventional parameters: plate efficiency factor, F ′ ; heat removal factor, F R ; overall heat loss coefficient, U L...

..., like CPCs full or truncated and it permits the glazing of the receiver in order to reduce heat losses. For small acceptance angles, these advantages are more relevant, but end-mirrors perpendicular to the trough and an east-west orientation are required. The main disadvantage of the new concentrator...

... that the overall heat loss coefficient is constant. In other words, the temperature difference between the panel and the environment is linearly related to the heat flux on the panels (solar irradiance). The heat transfer characteristics of a rack-mounted PV module and a BIPV module can be quite different...

...Pirawas Chuangchid; Moncef Krarti General semi-analytical solutions for the steady-state heat conduction problems for circular and three-dimensional rectangular slab-on-grade floors with uniform insulation are presented. The soil temperature field, and the total slab heat loss are presented...

...), and integration of various radial cell concepts into potential future ultra-high-power solar thermal systems. thermoelectric conversion thermoelectric devices space vehicle power plants heat losses solid electrolytes alumina 25 Mar 1999 12 Mar 2000 Contributed by the Solar Energy...