Green Energy PCM Phase Change Material Air Condition. Energy Saving Lights Windows Insulation --
Introduction to PCM Air Condition
Phase Change Material Non Hazardous Salts
Peak Load Shifting in AC Air Condition
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Energy Saving tips for Lighting, Insulation and Windows, Renewable Energy, Air Change Rate etc
Phase Change Material for Electronic Comfort
PCM for Green House.
- The fossil fuels that we have been using since a few decades have been formed in the earth’s crust, over millions or billions of years. The rate at which we are using them will not make it available in a few hundred years, even with the improved tapping methods. Our generation is concerned about reducing our carbon foot print. Global warming and heat waves have brought scientists attention, all over the world, to search of new and renewable energy sources.
- Cooling & Heating demand (HVAC) has already been increasing due to the evolving comfort expectations and technological development around the world. Significant economic benefit can be achieved by thermal energy storage for heating and cooling in buildings. Energy storage systems provide the potential to not only save energy but also reduce the environment impact related to energy use. In fact, these systems provide a valuable solution for correcting the mismatch that is often found between the supply and demand of energy. Latent heat storage in a phase change material (PCM) is very attractive because of its high storage density with small temperature change.
About Energy Saving Windows:
- We strongly recommend that Incandescent Lamps or bulbs should not be used. They have a short life and give 10 times less light than a LED or Fluorescent Lamp. They not only increase your energy bill for lighting but also add to your energy bill for Air conditioning.
About Air Change Rate:
- The object is to cut your home energy consumption for heating and cooling in half. To do this the transfer of heat between the outside and inside of your home must be reduced to a minimum by effectively insulating the home. If the Air Handling Unit AHU system doesn't continuously have to switch on to maintain the desired temperature inside your home, your energy bill will drop dramatically.
- Outdated or failing windows are responsible for a large percentage of the wasted energy in homes and other buildings.
- In the winter, windows can leak heat resulting in your burning more fuel and pay higher energy bills. In summer, poorly performing windows let cool air escape and fail to reflect outdoor heat.
- Modern, energy-efficient windows and doors can save you 15 to 25 percent on your monthly heating and cooling bills, according to the U.S. Department of Energy. Single sheet of clear glass was the rule a decade ago; there are now windows with multiple glass layers. Special coatings on the glass reflect sunlight and ultraviolet rays without dimming the view. Gases injected between panes create extra insulation. Advanced framing materials and innovative design provide further efficiency gains.
- The industry standard for energy-efficient glass coatings has become Low-Emissivity (LoE or Low-E) glazing. Coating a glass surface and gaps between each pane with LoE material can block a significant amount of heat transfer, reducing your home’s need for energy-consuming climate control systems.
- Low-E coatings are transparent to visible light, and different types of coatings have been designed to allow for high solar gain, moderate solar gain or low solar gain. These coating offers the lowest U factor and lowest solar heat gain. Inert gases (Generally Argon) pumped into the spaces between panes of glass slow the transfer of heat, increasing the insulating power of a window or door.
- A double-paned window with Low-E glass, with a vacuum-sealed argon fill — that's what people ask for, he says. It's an extra $40 or so per window for me to add these features, and they really do make a difference in a home's utility bills. John says he's found that doing anything more, like using triple-paned glass or denser gases with greater insulation properties, just adds cost and gives diminishing returns in efficiency.
- So what exactly are you getting when you choose a window with the aforementioned options? Low-E, argon-filled, double-paned windows provide significantly more insulation than a single-pane window, explains Kendra Weinisch, a residential energy efficiency consultant in San Jose, Calif. These windows protect the inside of the house from the sun's heat and UV rays in the summer, and they prevent heat from escaping during winter. From the standpoint of energy efficiency and value, these types of windows make a lot of sense.
- Making your home more energy efficient by properly insulating your attic, reducing air infiltration rates, accurately managing your AC/H system, and installing the high-tech, super insulating windows with, your family and your home can get more - much more.
- In the Chemical Engineering section of the University Institute of Chemical Technology (Formerly called University Department of Chemical Technology, UDCT as many of its alumni will loving refer to), Mumbai, India there are many sections of air conditioned rooms having double doors and double-pane windows. The teaching staff will vouch that saving in AC energy is significant. It was from this observation; we picked up the idea of adding this tip to our page.
About Insulation of House & Window Types:
- Air change rate is measured in appropriate units such as cubic meters per hour divided by the volume of air in the room, or by the number of times the home's air changes over with outside air.
- With dramatic improvement in the weather tightness of homes, anyone concerned about indoor air quality in their home, check the amount of fresh air entering there home. Recent cost reductions in CO2 meters and better understanding of the mixing of CO2 from the home occupants allow simple methods of calculating fresh air ventilation rates. Fresh ventilation is the most inexpensive way of controlling indoor pollutants in our home.
A fresh, filtered air change in an occupied home every 3 hours will purge the indoor pollutants and renew oxygen. Nothing else is as cost effective or provides better indoor air quality. By using the recently introduced CO2 meters to monitor your home's CO2 levels, you can determine the actual cfm of fresh air in your home.
- The cost of conditioning fresh air is much less than people assume. On windy days you get this without mechanical ventilation. Purging indoor pollutants and renewing oxygen is not expensive. Indoor air quality is worth that.
- The US national average of air change rates, for existing homes, is between one and two per hour, and is dropping with tighter building practices and more stringent building codes. Standard homes built today usually have air change rates from 0.5 to 1.0. Extremely tight new construction can achieve air change rates of 0.35 or less. Most homes with such low air change rates have some form of mechanical ventilation to bring in fresh outside air and exchange heat between the two air streams. Recently, ASHRAE Standard 62.2 have been adopted (2004). It clarifies the ventilation air requirements for low-rise residences. The Standard specifies that forced ventilation is required in houses with infiltration less than 0.35 ACH. It is important to check that AHU Ducts are sealed.
- It will not be out of place here to state that there are many days in a year and many hours in such day, when you can switch off your AC and open the window. Living with open windows is a pleasant experience. The saving in the cost of energy is over and above the big pleasure of living with open windows.
- More saving in energy cost of AC can be achieved by setting the Air conditioner to a higher temperature say, 78-80C and using a slow speed fan. This will reduce the AC cost by 30%.
AC Size Calculation:
- The R-Value of Insulation
- An R-value indicates insulation's resistance to heat flow. Higher the R-value, greater is the insulating effectiveness.
- The R-value depends on the type of insulation and includes its material, thickness, and density. When calculating the R-value of a multilayered installation, add the R-values of the individual layers. Installing more insulation in your home increases the R-value and the resistance to heat flow.
- The effectiveness of insulation's resistance to heat flow also depends on how and where the insulation is installed. For example, insulation that is compressed will not provide its full rated R-value. The overall R-value of a wall or ceiling will be somewhat different from the R-value of the insulation itself because some heat flows around the insulation through the studs and joists. Therefore, it's important to properly install your insulation to achieve the maximum R-value. The amount of insulation or R-value you'll need depends on your climate, type of heating and cooling system, and the section of the house you plan to insulate. For more information, see our information on adding insulation to an existing house or you may go to the website about insulating a new house.
- Selecting Insulation
- Selecting Insulation for New Home Construction
- Your state and local building codes probably include minimum insulation requirements, but to build an energy-efficient home, you may need or want to exceed them. For maximum energy efficiency, you should also consider the interaction between the insulation and other building components. This is called the whole-house systems design approach.
- To properly insulate a new home, you first need to know where you need to insulate and the recommended appropriate R-values for each of those areas. Use the U.S. Department of Energy's Zip Code Insulation Calculator to determine where you need to insulate and the recommended R-values based on your climate and type of heating and cooling system, etc. The program also will provide cost estimates and a rate of return.
- Once you know where you need to insulate and the recommended R-values, review our information on the types of insulation available to help you decide what type to use and where.
- Before you insulate a new home, you also need to properly air seal it and consider also check for moisture control.
- You may also check the webpage dulley.com webpage
- For new construction or home additions, R-19 insulation for exterior walls is recommended for most of the country. To meet this recommendation, most homes and additions constructed with 2 x 4 walls require a combination of wall cavity insulation, such as batts, and insulating sheathing, such as rigid foam boards. You may want to consider building with 2 x 6 framing instead of 2 x 4 framing to allow room for thicker wall cavity insulation — R-19 to R-21.
- When shopping for insulation watch for the ENERGY STAR® label and the National Association of Home Builders (NAHB) certification.
U.S. Department of Energy Recommended* Total R-Values for New Construction Houses in Six Insulation Zones
Please Click to Enlarge
*These recommendations are cost-effective levels of insulation based on the best available information on local fuel and materials costs and weather conditions. Consequently, the levels may differ from current local building codes. In addition, the apparent fragmentation of the recommendations is an artifact of these data and should not be considered absolute minimum requirements. Please look for it online.
- Energy Star Insulation
- Comprehensive air sealing, properly installed insulation, and high–performance windows work together to enhance comfort, improve durability, reduce maintenance costs, and lower monthly utility bills. Learn more about a complete thermal enclosure system in this
fact sheet (1.55MB).
- Air Sealing
- By using less energy for heating, cooling, and water heating, ENERGY STAR certified homes deliver approximately 20% savings on annual utility bills. Over the 7 to 8 years that a typical family lives in a home, you can save thousands of dollars in maintenance cost.
- Properly Installed Insulation
- It’s not the amount of insulation; it’s the quality of installation that makes all the difference. Proper installation includes careful placement to eliminate gaps, voids, and compression; complete air barriers that prevent air from bypassing the insulation; and building techniques that minimize heat flow through framing. This ensures consistent temperatures throughout the house, reduced energy use, and increased comfort.
- High–Performance Windows
- Advanced technologies, like protective coatings and improved frames, help keep heat in during winter and out during summer. They also block damaging ultraviolet sunlight that can discolor carpets and furnishings.
- Calculator is based on the square foot method, with computations added for the most important values included, such as insulation, windows and other factors. The system is pre-set to a 72 degree indoor temp and 95 outdoor temperature.
This calculator is provided for use as a super quick method of computing basic size and value conditions.
Square foot methods are considered rule of thumb for quick calculations. Exact heat loads can be determined with a full heat load analysis.
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