ps3.mania.xooit.be Index du Forum
Home - FAQ - Rechercher - Membres - Groupes - S’enregistrer - Profil - Se connecter pour vérifier ses messages privés - Connexion
 
a history of head trauma

ps3.mania.xooit.be Index du Forum -> Ps3.mania -> Ps3 : Discussions générales
Poster un nouveau sujet Répondre au sujet Sujet précédent :: Sujet suivant
Auteur Message
ps3lily


Hors ligne

Inscrit le: 06 Juin 2017
Messages: 211

MessagePosté le: Mar 14 Nov - 08:58 (2017) Sujet du message: a history of head trauma Répondre en citant

This article offers an illustrated description of a method to produce a closed parabolic trough solar energy collector box based on the elasticity of the material. What is described here is basically a manual method to make high efficiency solar collectors against very low cost Cheap Nick Young Jersey , which is particularly suited for teaching, research or demonstration purposes. But it is hard for a manually made collector to match the efficiency, lifetime and water tightness standard of an industrial product using the same method. It will also cost more than the industrial collector.
The method for industrial production of elastic closed parabolic trough boxes will be described in another article later. A parabolic trough solar collector uses a mirror in the shape of a parabolic cylinder to reflect and concentrate sun radiations towards a receiver tube located at the focus line of the parabolic cylinder. The receiver absorbs the incoming radiations and transforms them into thermal energy, the latter being transported and collected by a fluid medium circulating within the receiver tube. This method of concentrated solar collection has the advantage of high efficiency and low cost, and can be used either for thermal energy collection, for generating electricity or for both, therefore it is an important way to exploit solar energy directly.
Known methods to form the parabolic cylinder reflective surface consist either of forming a curved plate material under high temperature, or of adding pre-formed ribs at the back of a flat reflective plate, then force the plate to follow the curve of the ribs. Both methods are expensive, and both have difficulties to reach a high precision. Our method uses the natural elastic deformation of a planar plate to form a curved surface close to a parabolic cylinder, then redress the approximation error of this surface, again using elasticity. As it is easier to get higher precision by natural elastic deformation, this method has the following advantages.
1. Simplicity and low cost. It is actually the only known method for home making high performance parabolic trough solar collectors without any special tools. Not only the production cost drops to far below the other manufacturing methods of parabolic troughs, but also it makes the solar energy collecting cost substantially lower than any fossil fuel. The economic and social signification of the method may be huge.
2. Better performance and quality of the product. It is a general understanding that the smaller a parabolic trough is Cheap Larry Nance Jr. Jersey , the lower is its performance, although smaller parabolic troughs are much more useful than bigger ones. The fundamental characteristics of the performance of a parabolic trough solar collector are its concentration ratio and its optical efficiency. Today, the concentration ratio of a parabolic trough collector of width between 1m and 2m is limited to about 50 times under industrial manufacturing conditions and with high cost, while our method can achieve an effective and efficient concentration ratio of over 80 times for a manually made parabolic trough of width less than 1m, together with a higher efficiency.
The solar collector described here has several usages, and changing the usage amounts simply to replacing the receiver tube. Beside the simple low-temperature receiver described in this article that can be used for water heater, space heater or heat source for an absorption cooler, there are also tubes covered by photovoltaic cells useful for combined heat and electricity generation, and evacuated high-temperature receivers. The latter can be combined with thermal storage devices to be described in a coming article, to form round the clock electricity generating systems of sizes ranging from individual home energy systems to large solar power plants.
Led Bath Mirror & lighted bathroom mirror could be found at Illuminated Bathroom Mirror (IBMirror).
The low costs of the collector and the storage device guarantee that all these applications will lead to an energy cost significantly below that of fossil fuels. The theoretic design principle of a closed parabolic trough box can be found in MIT.
The method described here is patent pending. But the patent assignee allows royalty-free manual use of this method for non-profit purposes. For commercial exploitation of the method or product, please contact the author.


IBMirror Offer Largest Colection of. Illuminated & LED bathroom mirrors in North America. Combining supreme quality, the latest in contemporary design and IB mirror: IBM-Illuminated Bathroom Mirror.
Illuminated Bathroom Mirror specializes in production and distribution of LED mirrors and backlit mirrors.
Illuminated bathroom Mirror specializes in production and distribution of LED (light emitting diode) mirrors.
We offer a wide variety of mirrors to suit all residential and commercial needs.
Whether it is for your bathroom, or simply to create a unique decor, we most certainly have a product for you.
PRODUCTS:
Backlit bathroom mirrors Cheap Jordan Clarkson Jersey ,
Led bath mirror,
lighted bath mirrors,
lighted bathroom mirror,
backlit bathroom vanity mirrors,
backlit mirrors for bathrooms,
illuminated mirrors,
http:www.ibmirror

205 West Service Road
Champlain, NY 12919, United States
185-544-49333
contact name: Ben
info@ibmirror
http:www.ibmirror

The Health Division also normally needs an inspection of the area to be utilised for your catering company.

With your catering organization begin up, you have to determine what kinds of meals you are heading to offer you. As soon as you have made the decision on the meals, you want the tools to prepare the meals and a way to transportation it. Some locations you will be functioning will have a kitchen area that you can use for last preparing, . Wholesale NCAA Jerseys   Wholesale Jerseys From China   Wholesale NFL Jerseys China   Wholesale Soccer Jerseys   Wholesale NFL Jerseys   Wholesale NFL Jerseys   Wholesale Jerseys   Cheap Authentic NFL Jerseys   Wholesale NFL Jerseys   Cheap NFL Jerseys Wholesale 


Revenir en haut

Auteur Message
Publicité






MessagePosté le: Mar 14 Nov - 08:58 (2017) Sujet du message: Publicité

PublicitéSupprimer les publicités ?
Revenir en haut

Poster un nouveau sujet Répondre au sujet ps3.mania.xooit.be Index du Forum -> Ps3.mania -> Ps3 : Discussions générales Toutes les heures sont au format GMT + 1 Heure
Page 1 sur 1


Sauter vers:  

Index | Panneau d’administration | créer un forum | Forum gratuit d’entraide | Annuaire des forums gratuits | Signaler une violation | Conditions générales d'utilisation
Powered by phpBB © 2001,2003 phpBB GroupTraduction par : phpBB-fr.com Silver_Xire background picture © BaRiMzI. made by BaRiMzI