Environmental Friendly Building Design

GREEN BUILDING Land

use, site impact Materials Water use Energy use Environmentally Friendly

HEAT CONSERVATION Decreasing

indoor temperature Increasing indoor temperature

Environmentally Friendly

DECREASING TEMPERATURE Window’s

orientations Size of windows Plants around building Natural ventilation

Environmentally Friendly

WINDOW’S Should

ORIENTATIONS

build at south and north.

Environmentally Friendly

Two

windows in different wall, it can ensure wind can go in or out of every room.

Environmentally Friendly

SIZE OF WINDOW In

hot dry regions, building should only have very small windows.

Environmentally Friendly

In

hot humid regions, building should have large windows opening on the entire wall.

Environmentally Friendly

PLANTS AROUND BUILDING Plants

near a building Tree provide shade to the building Ground cover by plants around a building Environmentally Friendly

NATURAL

VENTILATION

Location

of opening with respect for wind direction. A

B

N

Environmentally Friendly

1 Increasing Indoor Temperature Passive Solar Design

Heat Pump

2 Reduced The Heat Loss

Building Envelope Environmentally Friendly

Special Glazing Systems

DESIGN Solar

energy is a radiant heat source that causes natural processes upon which all life depends. Passive Solar technologies are means of using sunlight for useful energy without use of active mechanical systems

Environmentally Friendly

Passive

solar energy helps heat the building by : -radiation -conduction -natural convection Sunlight strikes a building, the building materials can reflect, transmit, or absorb the solar radiation.

Environmentally Friendly

RULES OF PASSIVE SOLAR SYSTEM The

building should be elongated on an eastwest axis. The building’s south face should receive sunlight. Environmentally Friendly

Interior

spaces requiring the most light and heating should be along the south face of the building. Less used spaces should be located on the north. Use shading to prevent summer sun entering the interior. Environmentally Friendly

WAYS OF PASSIVE SOLAR HEATING Direct

Gain Indirect Gain Isolated Gain

Environmentally Friendly

DIRECT

GAIN

Actual

living space as

Solar a: collector Heat absorber Distributio Environmentally Friendly

Thermal

mass will temper the intensity of the heat during the day by absorbing the heat.

Environmentally Friendly

At

night, the thermal mass radiates heat into the living space.

Environmentally Friendly

INDIRECT In

GAIN

this system, thermal mass is located between the sun and the living space. The thermal mass absorbs the sunlight that strikes it and transfers it to the living space by conduction.

Environmentally Friendly

THERMAL STORAGE WALL SYSTEMS Operable

vents at the top and bottom of a thermal storage wall permit heat to convect from between the wall and the glass into the living space.

Environmentally Friendly

when

the vents are closed at night radiant heat from the wall heats the living space.

Environmentally Friendly

ISOLATED Its

GAIN

integral parts separate from the main living area of a house. Example: sunroom a convective loop through an air collector to a storage system in the house.

Environmentally Friendly

Environmentally Friendly

HEAT PUMP Is

a machine or device that moves heat from one location (the 'source') to another location (the 'sink' or 'heat sink') using mechanical work.

Environmentally Friendly

There

are 2 major types of heat pump: air

source heat pump (extracts heat from outside air) geothermal heat pump (extracts heat from the ground or similar sources)

Environmentally Friendly

HEAT PUMP TOGETHER WITH SOLAR COLLECTORS Solar heat energy 1.absorbed by the

solar cell Transferred to heat pump Provide warm air to inside area.

3. Environmentally Friendly

3

2

1

WAYS TO REDUCE THE HEAT LOSS The above methods show how building design providing heat in a “greener” way. But a heated building loses its thermal energy by conduction, convection and radiation, there are ways to reduce heat losses.

Environmentally Friendly

WAYS TO REDUCE THE HEAT LOSS Building

envelope Thermal Insulation Phase change material (PCM)

Environmentally Friendly

BUILDING Thermal

ENVELOPE

Insulation Thermal bridges A building construction that increase the heat losses of a building. impossible to build a house without thermal bridges. Add insulation layer to reduce the heat loss.

Environmentally Friendly

Reduce

heat loss by adding insulation materials on the wall. Insulation materials: cellulose glass wool rock wool Polystyrene urethane foam

Environmentally Friendly

BUILDING Phase

ENVELOPE

change material (PCM) is a substance with a high heat of fusion melting and solidifying at a certain temperature capable of storing and releasing large amounts of energy

Environmentally Friendly

Heat

is absorbed or released when the material changes from solid to liquid and vice versa.

Environmentally Friendly

UTILIZING SUSTAINABLE Lighting

system Renewable energy in building applications

Environmentally Friendly

HAVING A GOOD LIGHTING SYSTEM Provide

a more comfort environment Using less energy Having a substantially lower Environmentally Friendly

ADVANTAGES Make

a more comfort environment with a better mood and overall happiness in a working place Help to build up the corporate image and staff morale

Result in productivity benefits for the company Environmentally Friendly

Reduce

the energy consumption and emission of greenhouse gases More environmental friendly Lower the operating costs Increase the competiveness of a company The building become

Environmentally Friendly

WAYS TO HAVE A BETTER LIGHTING SYSTEMS Change

the bulbs LED it out Make as much use of natural light

Environmentally Friendly

CHANGE

THE BULBS

Replacing

a large watt incandescent bulb with a low watt Compact Fluorescent Light Bulb (CFL)

Environmentally Friendly

ADVANTAGES It

can save a certain energy costs Prevent greenhouse gases emission

Environmentally Friendly

DISADVANTAGES Environmental

damage Need to be disposed specially Environmentally Friendly

LED IT OUT A

light-emitting diode (LED) is an electronic light source. LEDs are used as indicator Lamps in many kinds of electronics and increasingly for lighting.

Environmentally Friendly

ADVANTAGES Last

longer More energy efficient

Environmentally Friendly

DISADVANTAGES Are

not common in the market

Environmentally Friendly

USE OF NATURE Natural light can be effectively obtained by well-placed windows, skylights and translucent wall panels.

Environmentally Friendly

LIGHT

ADVANTAGES More

healthy

Affects

the vitamin D and immune system, circadian rhythms, sleeps cycle and hormones.

Free

of charge More environmental friendly

Environmentally Friendly

DISADVANTAGES Unstable

light intensity and period

Environmentally Friendly

SUNLIGHTDEVICE

Environmentally Friendly

TRANSPORT-

ADVANTAGES sunlight

transfer in public urban art

To save the city money Infuse public space on energy

with a good mood boost.

Environmentally Friendly

DISADVANTAGES extremely

probably

expensive

due to fibre optic costs, diffusers

Environmentally Friendly

RENEWABLE ENERGY IN BUILDING APPLICATIONS Solar

Power System

Solar PV Solar Thermal 

Wind

Environmentally Friendly

Turbine

SOLAR POWER

Environmentally Friendly

SYSTEM

SOLAR THERMAL Is

used to heat a fluid to power energy

Environmentally Friendly

Environmentally Friendly

SOLAR PV (PHOTOVOLTAIC) Convert

solar energy directly into electricity.

Environmentally Friendly

Sunlight strikes the surface of a photovoltaic cell, this electrical field provides momentum and direction to light stimulated electrons, resulting in a flow of current when the solar cell is connected to an electrical load.

Environmentally Friendly

BENEFITS Clean,

Renewable and Sustainable Meets Peak Energy Demand Generates electricity is immediately Environmentally Friendly

DISADVANTAGES Climate

Problem Disposal of panels and batteries Expensive

Environmentally Friendly

WIND TURBINE Wind turbines harness the power of the wind and use it to generate electricity. Environmentally Friendly

WIND TURBINE

Environmentally Friendly

ADVANTAGES Cut

your carbon footprint Cut your electricity bills Store electricity for a calm day

Environmentally Friendly

DISADVANTAGES Wind

speed problem Noise problem Obstacles to building

Environmentally Friendly