Don׳t just follow the sun – A global assessment of economic performance for residential building photovoltaics

2015 ◽  
Vol 42 ◽  
pp. 932-951 ◽  
Author(s):  
Tillmann Lang ◽  
Erik Gloerfeld ◽  
Bastien Girod
2017 ◽  
Vol 4 (3) ◽  
pp. 111
Author(s):  
Saidou Baba Oumar ◽  
Molem Christopher Sama

This paper examines the implications of poverty on the Cameroon economic emergence vision 2035. Both primary and secondary data were collected on selected indicators of economic emergence for the period 1990-2035 and analyzed with descriptive and inferential tools of data analysis. The results reveal that the performance of major socio-economic indicators of well-being is poor in Cameroon. In consonance with the situation, a global assessment of the economic performance of Cameroon shows little hope for the economic emergence of the country by the target date of 2035. In order for the goal of economic emergence of Cameroon to come true as planned, it is suggested that the problem of poverty should be solved first by appropriately targeting macro-economic variables through policies that focus on job creation, provision of basic needs and services of life to people.


2013 ◽  
Vol 860-863 ◽  
pp. 1193-1198
Author(s):  
Shuang Liang ◽  
Wang Yan ◽  
Ke Huang ◽  
Neng Luo ◽  
Shao Jun Wang

Relative humidity in hot-humid and cold-humid area in summer is high, the sun radiation intensity is low, and the existing building thermal stability condition basic research data is absence . Select the region typical residential building, the sun radiation, relative humidity, air temperature and surface temperature were measured and recorded; Test analysis shows that typical residential house in summer in the climate characteristics the typical average indoor temperature fluctuation in the cycle is 4.3 °C,fluctuations of temperature to a larger extent, and was obviously affected by such factors as orientations and envelope constructional detail.


2019 ◽  
Vol 111 ◽  
pp. 06025
Author(s):  
Suzi Dilara Mangan ◽  
Gul Koclar Oral ◽  
Idil Erdemir Kocagil

Rapid urbanization, responsible for considerable global energy consumption, emphasizes sustainability challenges, in particular that of climate change. In order to tackle with climatic and environmental problems, the first step is to achieve energy efficiency in urban textures, are the main source of emissions, the major part of which is due to the energy consumption of buildings. Therefore, this study aims to develop and suggest a model which allows the evaluation of the level of effects of the design parameters which should be considered at the scale of urban textures, on the energy and economic performance of buildings to design sustainable, energy efficient built environments. Energy and economic performances of a reference building modeled in different urban texture alternatives were evaluated. In the first stage, the evaluations regarding energy consumption were performed through DesignBuilder simulation program. In the second stage, for the assessment of economic performance of the alternatives life cycle cost (LCC) analyses were performed integrated to the energy performance analyses. Consequently, the urban texture alternative which achieved the optimum result in terms of energy and cost efficiency was determined for Istanbul representing temperate-humid climatic region where an ongoing mass urban renewal has already been changing the existing urban textures.


Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5723
Author(s):  
Wongeun Lee ◽  
Taesub Lim ◽  
Daeung Danny Kim

In South Korea, radiant floor heating has been used from old housing to the recently constructed residential buildings, which is called “Ondol”. The Ondol system is generally a water-based system and it uses hot water as a heat medium provided by boilers fueled by natural gas. With great effort to reduce greenhouse gas emissions, electric Ondol panels have been increasingly applied to the recent residential buildings for floor heating. While the prefab electric Ondol panels were developed with the demand for dry construction method, the information about the prefab electric Ondol system is not sufficient. For the present study, the thermal performance of the prefab electric Ondol panels was investigated through field measurement. In addition, the heating energy and economic performance of the electric panel were compared with the conventional Ondol system. As a result, a significant surface temperature difference was observed. Moreover, the heating cost for the prefab electric Ondol system was more expensive than the conventional system, even though a heat loss was observed by the operation of the conventional system.


1966 ◽  
Vol 24 ◽  
pp. 40-43
Author(s):  
O. C. Wilson ◽  
A. Skumanich

Evidence previously presented by one of the authors (1) suggests strongly that chromospheric activity decreases with age in main sequence stars. This tentative conclusion rests principally upon a comparison of the members of large clusters (Hyades, Praesepe, Pleiades) with non-cluster objects in the general field, including the Sun. It is at least conceivable, however, that cluster and non-cluster stars might differ in some fundamental fashion which could influence the degree of chromospheric activity, and that the observed differences in chromospheric activity would then be attributable to the circumstances of stellar origin rather than to age.


1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.


1997 ◽  
Vol 161 ◽  
pp. 761-776 ◽  
Author(s):  
Claudio Maccone

AbstractSETI from space is currently envisaged in three ways: i) by large space antennas orbiting the Earth that could be used for both VLBI and SETI (VSOP and RadioAstron missions), ii) by a radiotelescope inside the Saha far side Moon crater and an Earth-link antenna on the Mare Smythii near side plain. Such SETIMOON mission would require no astronaut work since a Tether, deployed in Moon orbit until the two antennas landed softly, would also be the cable connecting them. Alternatively, a data relay satellite orbiting the Earth-Moon Lagrangian pointL2would avoid the Earthlink antenna, iii) by a large space antenna put at the foci of the Sun gravitational lens: 1) for electromagnetic waves, the minimal focal distance is 550 Astronomical Units (AU) or 14 times beyond Pluto. One could use the huge radio magnifications of sources aligned to the Sun and spacecraft; 2) for gravitational waves and neutrinos, the focus lies between 22.45 and 29.59 AU (Uranus and Neptune orbits), with a flight time of less than 30 years. Two new space missions, of SETI interest if ET’s use neutrinos for communications, are proposed.


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