kWh Cost in your area (Cost of energy)?

GWF Texas · November 13, 2007

We are analyzing the energy savings for window film, the higher the cost of the energy, the higher the savings.

In Houston we pay $.120 - $.140 per kWh.

This is very expensive. Missouri was only $.08 /kWh and Florida was $.08 / kWh just a few years ago. What is your energy cost?

November 13, 2007

almost .14 here in AZ fuggin crooks :dunno

GWF Texas · November 17, 2007

almost .14 here in AZ fuggin crooks

Yep, that's expensive as cr$%Xp!

Where I was trying to go with this thread was for everyone to be very aware of the cost of energy in their city and to know how many kWh window film will save in their area. Multiple the two together and you come up with an estimated cost savings with window film. Of course it varies greatly depending on which exposure the glass is on (hardly no savings on Northern exposure...but great savings on East, West & Southern exposure, depending on what city you are in).

Texas (Houston) for example, with a SC of .24 (Silver 20), you can save appox (estimated) 14 - 15kWh per SF per year.

14 kWh x $.125 kWh = $1.75 in energy savings per year per SF

* with Silver 20 in Houston (not including northern exposure) with clear mono glass.

And as cost of energy continues to go up, your customer can save more and more money each year. "Win, Win," right?

Of course, always be very careful on clarifying that this is only an "estimate" since there are so many other factors that come into play (shading, HVAC system, peak cost, insulation, tinted glass, window setback, etc.)

Now to get the word out to all of those building managers, building owners, etc...

November 17, 2007

"Thermal Bridging" is another big factor that affects your results... :dunno

GWF Texas · November 17, 2007

"Thermal Bridging" is another big factor that affects your results...

Vclimber,

Please explain what "Thermal Bridging" is? :poop

Appreciate the feedback.

:dunno

November 17, 2007

A thermal bridge is created when materials that are poor insulators come in contact, allowing heat to flow through the path created.

Insulation around a bridge is of little help in preventing heat loss or gain due to thermal bridging; the bridging has to be eliminated, rebuilt with a reduced cross-section or with materials that have better insulating properties, or with an additional insulating component

TintDude · November 17, 2007

Nice cut and paste, we got another MT in training. :dunno JUST KIDDING!

November 17, 2007

A thermal bridge is created when materials that are poor insulators come in contact, allowing heat to flow through the path created.
Insulation around a bridge is of little help in preventing heat loss or gain due to thermal bridging; the bridging has to be eliminated, rebuilt with a reduced cross-section or with materials that have better insulating properties, or with an additional insulating component

:hmmm wanna repeat that in english........... Vclimber :dunno :poop :poop :lol2

That would be the explination of a thermal bridge :poop

November 17, 2007

Nice cut and paste, we got another MT in training. JUST KIDDING!

he asked a question..I gave it to him. :poop

November 17, 2007

Thermal bridging occurs when the continuity of the building "“Building” means any structure or erection, whether temporary or permanent, other than a structure or erection consisting of, or ancillary to: any public road (including any bridge on which the road is carried), any private road any sewer or water main which is, or is to be, vested in Scottish Water, any aerodrome runway, any railway line, any large raised reservoir within the meaning of the Reservoirs Act 1975 (c23) any wires and cables, their supports above ground and other apparatus used for telephonic or telegraphic communication. Any references to a building include references to a prospective building . Any references to a building structure or erection include references to a part of the building structure or erection. In relation to the extension, alteration or conversion of a building references to a building are to so much of the building as is comprised in the extension or the subject of the alteration or conversion . " fabric is broken by the penetration of an element allowing a significantly higher heat loss than its surroundings. These ‘bridges’ commonly occur around openings such as lintels, jambs and sills and at wall/roof junctions, wall/floor junctions and where internal walls penetrate the outer fabric. Thermal bridges provide a ready passage of heat transfer to the outside air and allow a heat flow entirely disproportionate to their surface area resulting in excessive heat losses. Condensation may occur on the inner surfaces that can damage the dwelling "“Dwelling” means a unit of residential accommodation occupied (whether or not as a sole or main residence): by an individual or by individuals living together as a family; or by not more than six individuals living together as a single household (including a household where care is provided for residents) and includes any surgeries, consulting rooms, offices or other accommodation, of a floor area not exceeding in the aggregate 50 square metres forming part of a dwelling and used by an occupant of the dwelling in a professional or business capacity. " or threaten the health of the occupants.

there ..is that better :dunno