smart materials for hot and dry climates

8/12/2019 Smart Materials for Hot and Dry Climates

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Free Powerpoint Templates

Smart Materia

And their application in Arc
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Functional, Smart, Innovative M

Functional Materials or Smart Mater

Smart Materials is a relatively new term fo

and products that have changeable proper

able to reversibly change their shape or co

response to physical and/or chemical influ

Semi-smart materials are notable for their

example, to change their shape in respons

influence once or a few times


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Smart Materials exhibit the following

characteristics:

Immediacythey respond in real-time.

Transiencythey respond to more than on

environmental state.

Self-actuationintelligence is internal to r

external to the material.

Selectivitytheir response is discrete and

Directnessthe response is local to the ac

event


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Smart materials may be classified in

ways:

Type 1- property changing Materials that u

changes in one or more of their properties C

Mechanical, Electrical, Magnetic, Thermal, in

response to a change in the external stimuli

with the environment surrounding the mate

Type 2- energy exchanging Materials that tr

energy from one to an output energy in ano

and again do so directly and reversibly (piez

thermoelectric, photovoltaic'setc.)
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Project Proposal:


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Architectural Needs for Optimizatio

and Dry Climates:

1. Control of Solar Radiation transmittin

Buildings Envelope

2. Control of Conductive Heat Transfer th

Buildings Envelope

3. Control of Interior Heat Generation

4. Secondary Energy Supply

5. Optimization of Lighting Systems

6. Optimization of HVAC Systems (Passiv


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1. Control of Solar Radiation transmitting

Buildings Envelope

Smart Material Application:

Electrochromics

Proposed Products

Electrochromic Glass systemsincorporating Metal Oxides( Electrochromic glass utilizes a

thin film of metal oxides that cantint a window when hit with asmall amount of voltage. Theglass stays clear or translucent onthe inside and gets darker on theoutside, lowering cooling loadsand reducing the need for windowshades)


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1. Control of Solar Radiation transmitting th

Buildings Envelope

Smart Material Application:

Photochromics

Proposed Products

Photochromic Pigments

Photochromic Glass

Photochromic Plastics


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Buildings Envelop

Smart Material Application Liquid Crystal Displays

Proposed Products

LCDs(are made out of special thin flat panelthat can let light go through it, or can blockthe light. The panel is made up of severalblocks, and each block can be in any shape.Each block is filled with liquid crystals that canbe made clear or solid, by changing theelectric current to that block.)


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the Buildings Envelope

Smart Material Application

Louver control systems

Exterior radiation sensors (photo

voltaics)

Interior daylight sensors (photo-electrics)

Controls (shape memory alloys)

Proposed Products

Organic Photovoltaic Cells (OPV)


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2. Control of Conductive Heat Transfer t

the Buildings Envelope


Phase Change Materials (PCM): absorbs and

releases thermal energy in order to maintain a

regulated temperature within a product such as

textiles, building materials, packaging, or electronics.

Proposed Products

Microencapsulated PCM: The capsule wall or

shell provides a microscopic container forthe PCM. Even when the core is in the liquid state,

the capsules still act as a solid keeping

the PCMfrom melting away.

Plaster with PCM

Gypsum Plasterboard with PCM

Aluminum foil bags with PCM


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3. Control of interior heat generatio


Fiber-optic systems: Heat-Freelighting (fiber transmits the light butisolates the heat from the lightsource from the illumination point)

Proposed Products

Fiber-optic systems


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3. Control of interior heat generation


Thermo-electrics: They reactto temperature differences byabsorbing heat and generatingan electric current

Proposed Products

Thermoelectric Generators (TEG)


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Photoluminescents

Proposed Products

Daylight-Luminous Dispersion-BasedPaints: They can be applied by brush, rolleror spray to surfaces such as wood, plastic,textiles, paper, cardboard, concrete and

masonry/ High flexibility, good adhesion.

Daylight-Luminous Paints Based on Two-Component Acrylate-Based Paint: Goodresistance to mechanical loads, goodadhesion, highly dirt-repellent, simple toclean, resistance to wear with additional

protective coating.


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Light-emitting diodes

Proposed Products

Light-emitting diodes


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4. Secondary Energy Supply


Photovoltaics

Proposed Products

Organic Photovoltaic Cells (OPV)


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5. Optimization of Lighting Systems


Electroluminescents

Proposed Products

Injection Electroluminescence

Powder Electroluminescence

Thin Film Electroluminescence

Thick Film Electroluminescence

Polymer-/Small MoleculeElectroluminescence


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Pyroelectrics: releaseselectrical charge due to amaterials change intemperature and vice versa

Proposed Products

Pyroelectrics


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6. Optimization of HVAC Systems (Passive Smart Material Application

Photoelectrics

Proposed Products

Dye Solar Cells (DSC): are aphotovoltaic enablingtechnology which enablesmetal, glass and polymericbased products in the building,

transport and electronicssectors to generate energy andimprove energy efficiency.


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Thermoelectrics

Proposed Products Thermoelectric Generators

(TEG): by absorbing the heat totransfer it to electricity, it helpsin reducing the temp of thespace.


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CASE STUDY

The Faculty of Architecture Building

University of Khartoum


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University of Khartoum is a multi-campus, co-educa

public university located in Khartoum, between Jam

and the Nile Street.

Faculty of

Architecture


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Faculty of Architecture


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The Faculty consists of 4 main buildings

Building A:

GF: 3 Lecture Halls

1stF.: Studio/Exam Hall

Building B:

GF: Lecture room + Computer Lab

1stF.: Administration Offices

2ndF.: Staff Offices + Girls Lounge


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Building C:

GF: 2 Studios

1stF.: 2 Studios

2ndF.:1 Studio + Library

Building D:

GF: Adm. Offices + Lab

1stF.: Staff Offices

2ndF.: Staff Offices


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Case study will take place on Building B.

Characteristics:-

Structure: R/C Column and Beam

Walls: Brick + Plaster Finish

Ceilings: R/C Flat Slab + Plaster/Gypsum Boar Windows: Aluminum Frame + Glazing + Louve

Air-conditioning System: Split Units


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Ground Floor Planc

Masters Lecture RoomComputer Lab Recept


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First Floor Plan

Deans Office Reception Meeting Room

Faculty

Stude

affai


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Staff OfficeStaff OfficesGirls Lounge & Rest

Rooms

Second Floor Plan


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Northern Elevation


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Southern Elevation


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Proposed Changes

All plaster finishes + paint+ gypsum board panels be

materials that includes PCM. This will help in controll

amount of heat conducted from the outside to the intherefore reducing the temp. inside the space and lea

usage of cooling systems


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The windows of the administration and staff offices ca


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The windows of the administration and staff offices ca

by either photo-chromic or thermo-tropic glass. Where

subjected to light or heat the glass changes color to da

the amount of heat and light transmitted into the spac

Dye solar cells can also be used and integrated in the g

generate electricity as well as giving an aesthetic value


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When it comes to the electricity generation, OPV c

used on the exterior of the building to absorb sola

provide the building with electricity as well as an a

value.

Fiber optic systems and light emitting diodes can b

internal lighting systems because they dont releas

energy which will help in keeping the space cool


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Thank Yo
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smart materials for hot and dry climates

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