BUILDING SCIENCE MAND SERVICES WU JIAJING 0347305
Table of content 1.From Old to New 1.1 Site Analysis 1.1.1 An Introduction to Room Layout ........................... 1.1.2 Dissatisfactory Issues .............................................
1.2 Reintroducing Comfort 1.2.1 An Introduction to New Room Layout
.................
1.2.2 Highlighted Changes for Human Comfort .…...........
1.3 Energy Consumptions 1.3.1 Specifications.......................................................... 1.3.2 Energy Calculations……............................................
2.Re-Sources 2.1 Bill of Quantities............................................................... 2.2 Pictorial/Graphical References in BQ……………….…............ 2.3 Old Bedroom Layout Plan................................................ 2.4 New Bedroom Layout Plan...............................................
Site Analysis 1.1.1 An Introduction to Room Layout The selected location is the secondary bedroom, with simple spatial layout and very private, mainly used for sleeping, putting clothes, learning and storage. Under the old plan, the room had no Windows and only two doors, one to the bathroom, which was dark when the lights were off. The other door faces the south window, and when the light is not on, light comes through the door during the day,Lux is 11, so the farther you go inside the room, the less you can see. (As shown in the figure)
When standing in the doorway, the app shows the lux of light and the photo of the object
Door is to the south
According to the layout plan, there are only four lights and a wall-mounted air conditioner on the ceiling, and two chandeliers light up the room.
The other two fixtures are spotlights that are turned on at night for sleeping and searching for clothes. In addition, wall-mounted air conditioners are placed on that wall, facing the bed, and the model size is RAS -F10CF (1.0HP) 785x248x200.
1.1.2 Dissatisfactory Issues It is a wall in all directions, without natural light, the person can feel some depression hard to avoid inside, live for a long time in the room that does not have sunshine among, oneself mood also can bring a few influence, the ventilated sex of the room also can be opposite poorer a few. Because it has no Windows, there are no additional sources of light, and the air is relatively sealed. Sometimes when the door is closed, the air quality inside the bedroom is relatively poor.
Because whether it is day or night, the room can only rely on four lights for illumination, and the placement is relatively unreasonable. First of all, its Lux is 251 when only the chandelier is on, and 72 when in bed, because I like to play with my phone and watch TV in bed, but the light of the chandelier is extremely dazzling, affecting my sight. Moreover, there is only one switch to control the chandelier, which is at the door, so it is very inconvenient to go to the door to turn off the lamp every time before going to bed.
Lux of chandelier
Lux only when the chandelier is on
Second, study or read on the desk, because of the position of the chandelier, its light comes from the rear, its position is not in front of the desk or the upper part, but in the back of the position, so when doing things on the desk, will block the light source, so there will be shadow. When I had only the chandelier on, the desk had a lux of 77, and when I had four lights on, it had a lux of 145.
Only open the desk when the chandelier lux
Total lux with four lights on
Third, when looking for clothes or placing things, because of the position of the overhead light, often can not see the inside, so it is very inconvenient, only open the overhead light, standing in the closet lux is 20, lying on the bed, lux is 6, so when reading mobile phones or books in bed, the light is not enough, will easily lead to myopia, and very dazzling.
Lux of wardrobe when only overhead light is on
Lux at the head of a bed when only the overhead light is on
Lux of spotlights
Fourth, because there is only a bedside table on the left side, activities are generally carried out on the left side, while the air conditioner is facing the bed, so when you sleep with the air conditioner on, you will feel too cold, and when it is turned off, it is too hot, and you will face comfort problems.
The air conditioner faces the bed
Reintroducing Comfort 1.2.1 An Introduction to New Room Layout The new room layout includes new adjustments in lighting, ventilation and air conditioning. The position of desk and chest, maintain changeability, want to combine so consider comfortable and convenient for priority. After entering the room, there was a wall on the left side, but the left side of the wall was empty. In order to ensure ventilation and lighting of the room, I added a window so as to let more light into the house, improve the lighting effect of the room and resolve the influence caused by the absence of sunlight. And equipped with curtains, during the day when sleeping, also will not be affected by the window.
The room that plans according to new, took out original droplight, change line lamp, slot is opened in the upper part of the head of a bed, make light downward, complement the lamplight of the head of a bed, let whole space more administrative levels sense and dimensional sense, do not have on the vision before so narrow, become open and
comfortable. And increased the head of a bed and ark of the head of a bed, linear lamp is installed in the head of a bed clapboard, go up lamplight, go up in the evening when toilet or reading, raised beautiful degree again, also have illume effect. The color temperature of the two lights is 3000K, and the embedded line lamp can enrich the lighting level and have a sense of atmosphere, while the bedroom still pays more attention to the warm atmosphere for lighting.
The light of original pendant lamp is dazzling and uncomfortable
Use linear lamp now, beautiful and comfortable
Still added in upper part of bed end prevent dazzle shoot the lamp, of bed end shoot the lamp far away from the head
of a bed, avoid lamplight dazzling. Shoot the lamp to be opened when common activity, the lamp that needs to open the head of a bed to take illume only before going to bed is enough. And the three lights in front of the head of the bed also set a switch, there is no need to turn off the light when running to the door.
Change the previous overhead lights and changed spotlights, and place light switches at the head of the bed.
Then go to the desk. Because of the backlight before, an anti-glare lamp is added above the desk, near the left front
of the seat, so that there will be no shadow when working or writing homework. A desk lamp was also added to meet the demand for higher brightness.
Desk lamps detail
spotlights detail
The product of air conditioner DAI was also re-placed in the area above the window, facing the aisle at the end of the bed, which solved the problem of different temperatures when sleeping. In the previous position, sitting at the desk and studying, the air conditioner would blow directly towards people. Now, the above problems have been solved. And the door switch can control the switch of the air conditioner, saving electricity.
Plan chest afresh, the space is used more, can buy content more. The linear lamp is installed inside each layer of wardrobe to solve the difficulty that nothing can be seen before, so that it can highlight the texture of clothes while illuminating the dark place inside wardrobe.
Display air conditioner position change
Wardrobe lamp belt light display
1.2.2 Highlighted Changes for Human Comfort 1. Lamps and lanterns To adjust the comfort of the room better, remove droplight and dome light, their light is too strong, can have dazzling feeling, and in desk and chest place, it is the place that lamplight place does not cover. As a place to sleep and rest, in fact, they do not like to see dazzling lights. The design of the lamp belt not only plays a role in beautifying the shape and space, but also solves the problem of light pollution. It is necessary to design the lamp belt at the head of the bed of the bedroom. For this reason, two linear lamps are added at the head of the bed, both using warm color light 3000K, which can give people a warm, healthy, comfortable and sleepy feeling.
Left to right White light (6000-6500K), Neutral light (4000-4500K), Warm light (3000-3500K)
Shot the lamp was added on desk additionally, use Angle of beam of light to be 15°, notice illume. The use of neutral light, because more inclined to sunlight more, to ensure a certain brightness and not hurt the eye, no stroboscope not dazzling. At the same time added a desk lamp, can adjust the color temperature of three kinds of light, can be switched at any time.
Beam Angle 24°, suitable for wall washing/basic lighting Beam Angle 15 degrees, suitable for lighting/key lighting
Table lamp three kinds of light
The overhead light before the change is too dazzling, so it can ensure that the lighting at the same time, lying on the bed will not be stabbed eyes. The beam Angle is 24° to ensure basic lighting.
Before the wardrobe due to light reasons, it is not very clear to pick up clothes or hang clothes. While adding laminators, add LED lamp belts, choose LED lamps with less heat, and install them on the outside to ensure a clear choice of clothes. A switch controls the lighting of the lamp belts.
The color temperature of the lamp belt is
displayed in different types
2. VAC Equipment In order to improve the energy efficiency of the air conditioner, the air conditioner has been switched from Hitachi to FTKM, a 3.0 Daikin wall-mounted standard R32 air conditioner. The Daikin air conditioner has higher voltage resistance and can easily cope with large voltage changes without short circuit, while ensuring a longer life. Having an efficient economic model leads to high energy efficiency.
AIR CONDITIONING TYPE： FTKM SERIES (R32) FTKH28BV1MF
ENERGY CONSUMPTION GRADE
NEW AIR CONDITIONER ENERGY
OF OLD AIR CONDITIONERS
CONSUMPTION LEVEL
Before the change, the energy consumption of the air conditioner was 2 stars, with an average annual energy consumption of 2616kwj, while the air conditioner after the change, with an energy rating of 5 stars, won the 2021 product safety award (PSA). For traditional air conditioning, after the room temperature reaches the set temperature, humidity begins to increase, making people feel sultry. For FTKM models, humidity is maintained for constant comfort.
There are no Windows in the room before, and the ventilation is poor, so the dust blown out by the air conditioner will cause coughing. Sometimes, people will choose to open the air
conditioner, but it will be very hot and affect the comfort of sleep. The filter can remove PM2.5 particles smaller than 2.5 microns (um).
Smart Control is an optional accessory that turns a smartphone into a remote Control (Daikin Mobile Controller) that can be used at home or outdoors. Together, it gives you total control, such as start/stop, operation mode and set temperature, as well as advanced features such as weekly scheduling. When you are about to enter the home, the air conditioner can be opened on the mobile phone first, and it will be very cool when you return home. Moreover, you do not need to find the remote control every time. Sometimes the remote control can not be pressed because of key problems and network problems, so it can be operated through the mobile phone, which is convenient and fast.
1.3 Energy Consumptions 1.3.1 Specifications 1.Light Fixtures ① Two linear lamps at the head of the bed WIDTH:17MM
THICKNESS: 7MM
LENGTH:1200MM
SLOTTED LENGTH:1195MM
POWER:12W
VOLTAGE:220V
This LED linear lamp strip, do not need transformer, can be directly energized, high transparent PC cream cover, light is not dazzling, and the use of high quality aluminum groove, rust and oxidation resistance, bending resistance, high pressure resistance, good heat dissipation.
②Four slotless cable lights Cable lights LED strips PRODUCT MODEL:205 POWER:14W/M
PRODUCT SIZE: 0.3-3M THE INPUT VOLTAGE:DC12V
COLOR TEMPERATURE: WHITE/NATURAL/WARM LIGHT LED CHIP MATERIAL: ALUMINUM + ACRYLIC LAMPSHADE Soft light is not harsh, with three color temperature selection, aviation aluminum shell, rust and oxidation resistance, thin and fast heat dissipation, acrylic mask, high transmittance, bright and soft light, with constant current design, effectively protect the chip, improve life.
③Three anti-glare spotlights（Includes spotlights above the desk ） Case color: black/red
Process: die casting
Material: aluminum, Use place: commercial lighting/home decoration Voltage111v ~ 240v (included) Type
C0107
C0209
C0312
Power
7W
10W
12W
Size
90*68MM
90*78MM
90*78MM
Opening
∅ 75MM
∅ 75MM
∅ 75MM
Adjustable Angle of view, about 30 degrees of rotation demand lighting, blade type efficient radiator, new circulation heat dissipation function, accelerate the reduction of temperature, heat dissipation performance is good, prolong the service life, aluminum lamp body, with good corrosion resistance and rust resistance characteristics, durable, and good color, high brightness, not stasmoscope, not dazzling, healthy eye protection.
④Study Table Lamp Bulb: E27 /E26(not included)
Voltage: 85V-265V
Material: Metal
Body Color: Black
Cable:1 m Variation: No Blub: only the lamp and bulb is not included Tri Color: Tri Color bulb is included and color can be change from cool white,warm white and yellow by on/off.But Brightness is not adjustable. Tri+DIM Bulb:ri Color bulb is included and color can be change from cool white,warm white and yellow by on/off.But Brightness is adjustable. Features: The lamp itself takes up to a 40-watt bulb (not included). Modern and sophisticated black swing arm design. Steel spring and tension control knobs. Ideal for any studios, home or office.
3. Daiftkm series (R32) air conditioner Advanced energy-efficient inverter technology (high CSPF) Inverter technology with high rated energy; 1hp = high CSPF value (7.40) & low energy consumption (600).
Kangda effect The new shape of this newly designed Coanda panel generates airflow along the ceiling. This allows the air to disperse throughout the room without causing uncomfortable airflow. Provide comfortable cooling space without ventilation and uneven temperature.
Mixing cooling Hybrid refrigeration is Daikin's technology. By developing indoor heat exchanger to dehumidify at any time, the humidity can be effectively controlled even under low refrigeration load. After reaching the set temperature, dehumidify continuously and keep cool.
For traditional air conditioners, when the room temperature reaches the set temperature, the humidity starts to increase again, which makes people feel stuffy. For FTKM models, humidity can be maintained to keep you comfortable.
1.3.2 Energy Calculations Sizing air conditioner: Area of room(㎡）
= 4*3 =12 ㎡
Estimated heat of the room,multiply 600 =12 ㎡*600 =7200 btu/hr North window BTU
= 1.7*1*1.64 =2.788
Occupants,multiply 600
=1*600 =600but/hr
Total Wattage from electrical equipment =LED linear light +led hard light bar+Fire lamp+table lamp =(12W*2)+(9W*4)+(7W*3 )+(85W*1) =166W Estimated heat from electrical equipment with 4.5= 166W*4.5 =747btu/hr Total Heat Calcylation (Byu/hr)
=7200+600+747 =8547but/hr
Air conditioner sizing (horsepower,hp)
=8547/9500 =0.8996 ≈1 HP
Bill Costing for Master Bedroom: 1. Light Fixtures Old Design Item
Product Name
Calculations Power =30W=0.03KW
The suspension
Per Day =0.03kw*5h =0.15kwh Per Month =0.15kwh*30days =4.5kwh
line is 1.2m long, （LH121-02， 30W） Daylight(6500K)
Bill cOSTING =Prorated Block(kwh)*Rate(rm) =4.5kwh*RM0.218 =RM0.981
New Design 1 Item
Product Name
Calculations
Power =12W=0.012KW Per Day =0.012kw*5h =0.06kwh Per Month =0.06kwh*30days
Linear led lamp*130cm Warm light:3000K
=1.8kwh Bill costing =Prorated Block(kwh)*Rate(rm) =（1.8kwh*RM0.218）*2 =RM0.7848
After changing the monthly, the net expenditure is saved =RM0.981-RM0.7848 =0.1962 Old Design Item
Product Name
Calculations Power =20W=0.02KW
Philips LED20 watt RS100B high power（20w） Daylight(6500K)
Per Day =0.02kw*2h =0.04kwh Per Month =0.04kwh*30days =1.2kwh Bill costing =Prorated Block(kwh)*Rate(rm) =（1.2kwh*RM0.218）*2 =RM0.5232
New Design 2 Item
Product Name
Calculations
Power =7W=0.007KW
Deep Hidden Anti-Glare Cob
Per Day =0.007kw*2h =0.014kwh Per Month =0.014kwh*30days =0.42kwh
Spotlight（7W） Bill costing Warm light:3000K =Prorated Block(kwh)*Rate(rm) =（0.42kwh*RM0.218）*2 =RM0.1831
After changing the monthly, the net expenditure is saved =RM0.5232-RM0.1831 =RM0.34
Based on the above calculations, the front chandelier is about 0.981/month, and the power is 30W. In order to better fall asleep before going to bed, choose two LED lights instead. The monthly cost is about RM0.78, 12W per month, saving RM0.2 per month. On the other hand, Design 2 Selects the LED top light. Its power is 20W and RM0.52 is RM0.52 each month. Change to two spotlights, their power is 7W, and the monthly cost is RM0.18, saving RM0.34 every month.
2.VACE equipment Old Design Item
Product Name
Calculations Power =915w=0.915kw Per Day =0.915kw*6h =5.49kwh
RAS-F10CF COOLING 915W
Per Month =5.49kwh*30days =164.7kwh Bill cOSTING =Prorated Block(kwh)*Rate(rm) =164.7kwh*RM0.218 =RM35.9
New Design Item
Product Name FTKM, a 3.0 Daikin Rated Power Consumption (Min-Max)720 w(260 – 1,200)
Calculations Power =720W=0.72KW Per Day =0.72kw*6h =4.32kwh Per Month =4.32kwh*30days =129.6kwh Bill costing =Prorated Block(kwh)*Rate(rm) =（129.6kwh*RM0.218） =RM28.25
After changing the monthly, the net expenditure is saved =RM35.9-RM28.25 =RM7.65
Based on the above calculations, the old air conditioner is 915W, RM35.9 per month, and 720W of the new air conditioner, RM28.25 per month. After replacing the new air conditioner, it saves RM7.65/month. The air conditioner accounts for a large electricity bill, so it should be paid more attention to and saved.
2.1 Bill of Quantities 1.Light Fixtures in the room Item
Description
Unit
qty
Rate(RM)
Total(RM)
Note
L-1
LED linear light deng'dai
nos
4
42.00
168.00
The price does not include freight
L-2
Glip -free light line light LED hard light strip
nos
4
22.20
88.80
The price does not include freight
L-3
Deep Hidden Anti-Glare Cob Spotlight
nos
3
20.90
62.70
The price does not include freight
L-4
Study Table Lamp Office Desk Light
nos
1
29.40
29.40
The price does not include freight
Total:
348.90
2.VAC Equipment in the room Item
Description
Unit
qty
Rate(RM)
Total(RM)
Note
V-1
DAIKIN FTKH28BV1MF
nos
1
2340.00
2340.00
The price does not include freight
Total:
2340.00
2.Summary of the Total Cost for the Room NO.
Description
Sub Total(RM)
BQ1
Total Cost for Light Fixtures in the room
BQ2
Total Cost for VAC Equipment in the room
2340.00
GrandTotal:
2688.90
348.90
2.2 Pictorial/Graphical References in BQ Item
References
Sources
L-1
https://www.lazada.com. my/products/led-linear-li ght-hard-light-bar-v-linea r-light-with-wine-cabinetwardrobe-shoe-cabinet-la mp-tube-concealed-embe dded-line-light-i29722989 19-s14581504772.html?
L-2
https://www.lazada.com. my/products/open-moun ted-non-slot-line-light-lin ear-lamp-led-hard-light-b ar-v-transformer-free-obli que-angle-45-degree-side -luminous-i2678922458-s 12573306550.html?
L-3
https://www.lazada.com. my/products/deep-hidde n-anti-glare-cob-spotlight -household-wall-washinglamp-indoor-ceiling-lamp -led-downlight-embedde d-no-main-lamp-lighting-i 2859866886-s137812201 14.html?
L-4
https://shopee.com.my/S IV-Study-Table-Lamp-Offi ce-Desk-Light-Lampu-Wit h-Flexible-Swing-Arm-Wh ite-Black-Silver-i.2773794 97.5739283934?sp_atk=d c377438-e9df-40dd-bf3b7b9c5ba20aa9&xptdk=dc 377438-e9df-40dd-bf3b-7 b9c5ba20aa9
V-1
https://www.daikin.com. my/smarto/#price
BUILDING SCIENCE AND SERVICES BLD62304 PROJECT 2
WU JIAJING 0347305
Heat Gain & Loss Calculation Equation for Conduction
q=
A * △T R
where q = heat flow, Btu/hr A = area, ft2 R = resistance, ft2-hr-°F/Btu △T = temperature differential, °F Higher temperature – Lower temperature
The chosen space is the second-floor bedroom, where two of the four walls are exposed to sunlight and the rest are inside.
Cad floor plan of the room
WALL D (NORTH FACING WALL) WALL A (WEST FACING WALL)
WALL C (EAST FACING WALL)
WALL B (SOUTH FACING WALL)
Room model drawing, direction introduction
7AM
12PM
Room sunlight distribution map
5AM
WALL A (WEST FACING WALL)
3000*4000 concrete wall, this wall is load-bearing wall, the outside of the wall is outdoor. R-values-concrete block perlite cores=6
Heat transfer calculation of wall A 7：00AM
12:00PM
5:00PM
Outside temp
78.8°F
82.4°F
80.6°F
Inside temp
77°F
77°F
77°F
Difference
1.8°F
5.4°F
3.6°F
Calculations Concrete wall with (9’*13*3inch) Area wall
9’*13’=117’sq R= 6hr*ft2*f/(BTU*inch) =6*3inch =18 hr*ft2*f/(BTU*inch)
Q=A*△T/R
Q=A*△T/R
Q=A*△T/R
=117’*1.8/18
=117’*5.4/18
=117’*3.6/18
=11.7BTU/hr
=35.1BTU/hr
=23.4BTU/hr
By calculation, heat transfer is highest at 12pm and lowest at 7am.
WALL B (SOUTH FACING WALL)
5000*4000 concrete wall, hollow wall, the outside of the wall is inside R-values: Concrete Block Hollow cores=1.1 1000 * 3000 wooden door, R - values: hardwood = 0.91
Heat transfer calculation of wall B 7：00AM Outside temp 78.8°F
12:00PM
5:00PM
80.6°F
78.8°F
Inside temp
77°F
77°F
77°F
Difference
1.8°F
3.6°F
1.8°F
Calculations Concrete wall with (6’*13’*3inch) Area wall
6’*13’=78’sq R= 1.1hr*ft2*f/(BTU*inch) =1.1*3inch =3.3 hr*ft2*f/(BTU*inch) Q1=A*△T/R
Q1=A*△T/R
Q1=A*△T/R
=78’*1.8/3.3
=78’*3.6/3.3
=78’*1.8/3.3
=42.5BTU/hr
=85.1BTU/hr
=42.5BTU/hr
Concrete wall with (6’*13’*3inch)
Q1=Q2
Q2=A*△T/R
Q2=A*△T/R
Q2=A*△T/R
=78’*1.8/3.3
=78’*3.6/3.3
=78’*1.8/3.3
=42.5BTU/hr
=85.1BTU/hr
=42.5BTU/hr
Concrete wall with (1’*13’*5inch) Area wall
1’*13’=13’sq R= 1.1hr*ft2*f/(BTU*inch) =1.1*5inch =5.5hr*ft2*f/(BTU*inch) Q3=A*△T/R
Q3=A*△T/R
Q3=A*△T/R
=13’*1.8/5.5
=13’*3.6/5.5
=13’*1.8/5.5
=4.25BTU/hr
=8.5BTU/hr
=4.25BTU/hr
Concrete wall with (3’*2’*3inch) Area wall
3’*2’=6’sq R= 1.1hr*ft2*f/(BTU*inch) =1.1*3inch =3.3hr*ft2*f/(BTU*inch)
Q4=A*△T/R
Q4=A*△T/R
Q4=A*△T/R
=6’*1.8/3.3
=6’*3.6/3.3
=6’*1.8/3.3
=3.3BTU/hr
=6.5BTU/hr
=3.3BTU/hr
Q5=A*△T/R
Q5=A*△T/R
Q5=A*△T/R
=33’*1.8/0.91
=33’*3.6/0.91
=33’*1.8/0.91
=65.3BTU/hr
=130.5BTU/hr
=65.3BTU/hr
Wood door with (3’*11’*1inch) Area door
3’*11’=33’sq
R= 0.91hr*ft2*f/(BTU*inch) =0.91*1inch =0.91hr*ft2*f/(BTU*inch)
Q1+Q2+Q3+Q4+Q5 Total
=42.5*2+4.25
=85.1*2+8.5
+3.3+65.3
+6.5+130.5
=157.85 BTU/hr
=315.7 BTU/hr
=42.5*2+4.25 +3.3+65.3 =157.85 BTU/hr
By calculation, heat transfer is highest at 12pm, the same as at 7am and 5pm.
WALL C (EAST FACING WALL)
3000*4000 concrete wall, hollow wall, the outside of the wall is inside R-values: Concrete Block Hollow cores=1.1 1000 * 3000 wooden door, R - values: hardwood = 0.91
Heat transfer calculation of wall C 7：00AM
12:00PM
5:00PM
78.8°F
80.6°F
78.8°F
Inside temp
77°F
77°F
77°F
Difference
1.8°F
3.6°F
1.8°F
Outside temp
Calculations Concrete wall with (5’*13’*3inch) Area wall
5’*13’=65’sq R= 1.1hr*ft2*f/(BTU*inch) =1.1*3inch =3.3 hr*ft2*f/(BTU*inch)
Q1=A*△T/R
Q1=A*△T/R
Q1=A*△T/R
=65’*1.8/3.3
=65’*3.6/3.3
=65’*1.8/3.3
=35.5BTU/hr
=70.9BTU/hr
=35.5BTU/hr
Concrete wall with (1’*13’*5inch)
Area wall
1’*13’=13’sq R= 1.1hr*ft2*f/(BTU*inch) =1.1*5inch =5.5hr*ft2*f/(BTU*inch)
Q2=A*△T/R
Q2=A*△T/R
Q2=A*△T/R
=13’*1.8/5.5
=13’*3.6/5.5
=13’*1.8/5.5
=4.25BTU/hr
=8.5BTU/hr
=4.25BTU/hr
Concrete wall with (3’*2’*3inch) Area wall
3’*2’=6’sq R= 1.1hr*ft2*f/(BTU*inch) =1.1*3inch =3.3hr*ft2*f/(BTU*inch)
Q3=A*△T/R
Q3=A*△T/R
Q3=A*△T/R
=6’*1.8/3.3
=6’*3.6/3.3
=6’*1.8/3.3
=3.3BTU/hr
=6.5BTU/hr
=3.3BTU/hr
Wood door with (3’*11’*1inch) Area door
3’*11’=33’sq
R= 0.91hr*ft2*f/(BTU*inch) =0.91*1inch =0.91hr*ft2*f/(BTU*inch)
Q4=A*△T/R
Q4=A*△T/R
Q4=A*△T/R
=33’*1.8/0.91
=33’*3.6/0.91
=33’*1.8/0.91
=65.3BTU/hr
=130.5BTU/hr
=65.3BTU/hr
Q1+Q2+Q3+Q4
Total
=35.5+4.25+3.3 +65.3 =157.85 BTU/hr
=70.9+8.5+6.5
=35.5+4.25
+130.5 =216.4BTU/hr
+3.3+65.3 =108.35 BTU/hr
According to calculation, heat transfer is the highest at 12 o 'clock and the lowest at 5 o 'clock in the afternoon。
WALL D (NORTH FACING WALL)
5000*4000 concrete wall, this wall is load-bearing wall, the outside of the wall is outdoor. R-values-concrete block perlite cores=6
Heat transfer calculation of wall D 7：00AM
12:00PM
5:00PM
Outside temp
78.8°F
82.4°F
80.6°F
Inside temp
77°F
77°F
77°F
Difference
1.8°F
5.4°F
3.6°F
Calculations Concrete wall with (16’*13*3inch) Area wall
16’*13’=208’sq R= 6hr*ft2*f/(BTU*inch) =6*3inch =18 hr*ft2*f/(BTU*inch)
Q=A*△T/R
Q=A*△T/R
Q=A*△T/R
=208’*1.8/18
=208’*5.4/18
=208’*3.6/18
=20.8BTU/hr
=62.4BTU/hr
=41.6BTU/hr
According to calculation, heat transfer is highest at 12 o 'clock and lowest at 7 am。
BUILDING SCIENCE AND SERVICES BLD62304 PROJECT 2
WU JIAJING 0347305
PROBLEM STATEMENT Choose the B wall because only the B wall can come in the sun. If you open the door, there is a window at the door. The air does not circulate.
Cad floor plan of the room
SOLUTION First of all, because the room can only be put into the sun, but if the door is opened, the sunlight of the room is too dazzling, and the eyes will be directly shot directly. Therefore, I need to illuminate the sun and ventilate. Because it is hanging on the door, it can be moved when I need to enter and exit the room, which is convenient. Secondly, because the room does not store keys and other things, it is easy to find it at random, so it can make some storage, such as the key, etc., and you can hang it on it when I enter the room.
MATERIAL
Wooden frame *2
felt *1
wooden stick *12
line*1
Woven *2
Rolling *1
Buttons *1
PRODUCTION STEP
First, attach the linen cloth to the back of the two wooden frames.
Then make one of the wooden frames, saw the stick to the right length, paste it in the middle,
Then make another wooden frame, cut the felt cloth in sections,
After securing from the top, twist the cloth to form a shape and secure the bottom
Add linen cloth on the outside of wooden frame, make rolling curtain, fixed above, natural vertical
To make buttons, attach a button to the top of the cloth
Create a button on the reverse side of the curtain for easy roll-up
Finally, by fastening the two wooden frames together
Use felt cloth and attach it to linen to form a handle that can be carried
COST
Wooden frame
17.6 RM
felt
2.8 RM
wooden stick
9.5 RM
linen
13.5 RM
Woven
11 RM
Rolling
2.5 RM
Buttons
5.9 RM
Total
62.8RM
REFLECTION