EFFICIENCY REFRIGERATOR : REFRIGERATOR
EFFICIENCY REFRIGERATOR : KELVINATOR BLAST FREEZER.
- An appliance or compartment that is artificially kept cool and used to store food and drink. Modern refrigerators generally make use of the cooling effect produced when a volatile liquid is forced to evaporate in a sealed system in which it can be condensed back to liquid outside the refrigerator
- A refrigerator is a cooling apparatus. The common household appliance (often called a "fridge" for short) comprises a thermally insulated compartment and a heat pump—chemical or mechanical means—to transfer heat from it to the external environment (i.e.
- Refrigerator was an Appendix Quarter horse racehorse who won the Champions of Champions race three times. He was a 1988 bay gelding sired by Rare Jet and out of Native Parr. Rare Jet was a grandson of Easy Jet and also a double descendant of both Depth Charge (TB) and Three Bars (TB).
- white goods in which food can be stored at low temperatures
- The state or quality of being efficient
- skillfulness in avoiding wasted time and effort; "she did the work with great efficiency"
- The ratio of the useful work performed by a machine or in a process to the total energy expended or heat taken in
- An action designed to achieve this
- the ratio of the output to the input of any system
- (efficient) effective: able to accomplish a purpose; functioning effectively; "people who will do nothing unless they get something out of it for themselves are often highly effective persons"-G.B.Shaw; "effective personnel"; "an efficient secretary"; "the efficient cause of the revolution"
Refrigerator efficiency in Ghana: Tailoring an appliance market transformation program design for Africa [An article from: Energy Policy]
This digital document is a journal article from Energy Policy, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
In some cases, a simple replication of developed country appliance efficiency labels and standards may not be completely feasible in Ghana, Africa. Yet by creatively modifying the developed country appliance efficiency market transformation model, it should be possible to achieve dramatic energy use reductions. As was true in developed countries in the previous two decades, refrigeration efficiency improvements provide the greatest energy savings potential in the residential electricity sector in Ghana. Although Ghana, like many African countries may impose standards on imports since Ghana does not have manufacturing facilities for appliances in country. This approach may hurt some consumers who patronize a very diverse market of used appliances imported from Europe. We discuss how meeting the challenges of the Ghanaian market will require modification of the usual energy efficiency labeling and standards paradigm. But once a refrigerator market transformation is accomplished in Ghana, we estimate an average energy savings potential of 550kWh/refrigerator/year, and a monetary savings of more than $35/refrigerator/year. We discuss how this modified refrigerator efficiency market transformation may occur in the Ghanaian context. If successful, this market transformation is likely to be an example for many other African countries.
Surface Area Efficiency Comparison
Just a sample of modular origami surface area efficiency comparisons that I do. This analysis I do on some modulars that result in a completed closed surface to get an idea of how much paper was "wasted" in making locks and getting the right shapes for the particular polyhedron.
The black areas are the portions of each sheet of paper that becomes a part of the surface of the finished model (drawn perfectly to scale). The percents were calculated with a little help from AutoCAD.
As you can see, the sonobe unit is pretty inefficient. Though it should be noted that it sacrifices this efficiency for simplicity and flexibility. The other two are models of mine with both pictures and diagrams in my photostream. They were specifically designed for one polyhedron each, so in the customization allows them to gains efficiency.
Although 26%, or about 1/4 (for the dodecadodeca), might not sound very efficient, the drastically increased complexity of the shape it produces, including points of negative curvature, makes this design pretty efficient for what it does IMO; considering that it's twice as efficient as the sonobe unit.
The Icositetrahedron is one of my most efficient designs. The final model made from 24 sheets of paper is almost TWICE the diameter of a 30-piece sonobe model made from the same sized paper.
A simple example of a modular with even MORE efficiency is the Butterfly Ball, which sacrifices integrity for a 50% efficiency. This model doesn't even really have a lock; it is held together by friction. In fact, technically the sonobe unit is ALSO held together purely by friction, but at least the sonobe unit has pockets instead of just overlapping paper. Both of my designs shown here have strong, mechanical locks not based around friction.
Surface area efficiency for my truncated rhombic triacontahedron (not shown here) is 30.9%, which I think is pretty good considering the super-strength of the locking mechanism.
Diagrams for all 3 of my models described here, the two in this photo as well as the one I just mentioned can be found in my "Diagrams & Notes" set. Photos of the completed models are in my "Origami Modulars" set.
Castella Imports will save $58,000 annually through LIPA’s Efficiency Long Island Program
From left to right:
John Franceschina, LIPA Director of Commercial Efficiency Programs
Bill Valsamos, Castella President
John Roumbos, Castella Chief Financial Officer
Michael J. Deering, LIPA Vice President of Environmental Affairs
This digital document is a journal article from Energy Policy, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
The definition of simple and reliable emission baselines is crucial to foster clean development mechanism (CDM) projects. This paper assesses a project methodology that could boost large-scale energy-efficiency projects in the sector of domestic appliances. The baseline appliance is defined a priori in a ''conservative'' manner as the design option minimizing life-cycle social costs. The project methodology consists in a program which rebates new appliances according to their emission savings compared to the baseline. Is the proposed baseline acceptable? What could be the impact of such project on emissions? To address these questions, we look for insights from a hypothetical case on Brazilian refrigerators. A rational choice model is developed which assumes that households select design options minimizing life-cycle private costs. Results suggest that electricity tariff distortions and financial constraints might hamper project performances and allow significant free-riding. Low income households remain trapped into low-efficiency choices and high income households adopt outperforming appliances, whether rebated or not. However, simple solutions likely to improve the project methodology do exist.
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