Ppt thermal storage wall

download Ppt thermal storage wall

of 18

  • date post

  • Category


  • view

  • download


Embed Size (px)

Transcript of Ppt thermal storage wall


2. Basic Diagram of thermalstorage wall 3. What is thermal storage wall?A thermal storage wall is defined as asouth-facing wall that is glazed on theoutside. Solar heat strikes the glazing andis absorbed into the wall, which conductsthe heat into the room over time. The wallsare at least 8 inches thick. Generally, thethicker the wall, the less the indoortemperature fluctuates. 4. WORKING OF thermal storage wall A typical Thermal storage wall can form part ofthe building envelope and may incorporatethermal mass principles. It consists of a 2040cm thick masonry wall coated with a dark,heat-absorbing material. A single or doublelayer of glass is placed on the outer face awayfrom the wall, with a small airspace betweenthe wall and the glass During the day solarradiation will heat the air trapped between theglass and the wall, and the wall itself will alsoheat up. Vents at the top and the base of thewall allow the heated air to be circulatednaturally into the building. 5. Once the wall heats up it too will radiateheat into the building. During the nightheat that is stored in the thermal mass ofthe wall will radiate into the room. Atnight it is advisable to close the uppervent to prevent the loss of heat energyfrom the building. These walls save energy bycomplementing conventional heating. Inan efficient building Trombe walls mayeven replace the need for conventionalheating. 6. FABRICATING COMPONENTS PLYWOOD THERMOCOL GLASS PANE BLACK FINS ALUMINIUM FOIL EXHAUST FAN G P SHEET 7. FABRICATION PROCEDURE First of all we will make a rectangular boxusing plywood of dimension 2feet sqr whereinside the box we will stick the thermocol forstorage of heat. On the front side we will make two holes oneon the up and other on the down i.e. uppervent and lower vent. We will fix the fan on the upper vent. 8. Now we will extend our construction bysticking the aluminum foil on the front side ALfoil acts as high reflecting source of sunlight. Black fins are fixed on above the aluminumfoil, purpose of black vents is to trap the heatof the sun. Lastly we will fix a glass. 9. FABRICATED VIEW OF THE MODEL 10. Sl.No. Time Ambient temp C Temp at went C1 9.30 25 262 10.30 26 273 11.30 28 304 12.30 29 325 13.30 30 336 14.30 32 367 15.30 34 378 16.30 34 37RESULTS:1TimeFig1 Plot of time v/s temperature05101520253035409.3 10.3 11.3 12.3 13.3 14.3 15.3 16.3Ambient temp CTemp at went C 11. Sl. No. Time Ambient temp C Temp at went C1 9.30 24 262 10.30 25 273 11.30 27 304 12.30 29 325 13.30 30 336 14.30 31 367 15.30 32 378 16.30 32 38RESULTS:205101520253035409.3 10.3 11.3 12.3 13.3 14.3 15.3 16.3Ambient temp CTemp at went CTimeFig2 Plot of time v/s temperature 12. SCOPE The solar heater can be effective for thepeople residing in colder areas. The total cost involved in the development ofsolar room heater is approx Rs.3400.This iscost effective and can be used for the poorpeople. This technique is already been used in thecountries like USA, Nepal, Canada and manyother countries. 13. Advantages: Thermal storage walls can be used in mild to severeclimates. They can be used to passively cool homes. They greatly reduce sun drenching, thereby lesseningglare and damage to carpets, upholstery, andplants, which can be quite significant in direct gaindesigns. They work best when nighttimes heating is the primarygoal. By installing vents and windows for direct gain they canbe modified to contribute to day time heat demand aswell. They provide mass in a relatively concentratedarea, taking up a minimal amount of living space andprovide great comfort. Thermal storage walls are aestheticallyappealing, externally and internally. 14. Disadvantages: Thermal storage walls may add to the cost ofconstruction, mainly by increasing the size of thefoundation required to support the additionalmass. They may reduce daylight and access to views. Heat loss can be quite significant at night unlessthe external surface of the structure is insulated. It cannot be used through out the year. 15. COST ESTIMATED(APRX)Glass 500Plywood 1100Thermal storagemedium(thermocol)100Black Fins 450Fan 60Other essentials 1200Total 3410 16. CONCLUSION Today, solar heating is becoming moreimportant than ever before because it is an nonconventional source as natural gas sourcessuch as coal, lignite all these fuels arebecoming more expensive as they are at a edgeof shrink. Our natural fossil fuels would last longer if weused this type of non conventional sources. Solar heating do not cause any pollution,so ourenvironment would be cleaner. 17. PRESENTED BYPrachurya Sarma( e-mail-prach.sit@gmail.com)Abhishek Kumar SinghPoorna Chandra PrakashRanga Swamy Naik