Session 13 Case Study & iPad Use

Case Study

EMSI Training

Outline•Software layout•Log in•Case study & iPad data collection•Contact us

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Software Layout2.iPad interface3.Project detail4.Risk assessment5.Carbon footprint6.Building

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Options to log in2.Use ipad3.Go to ipad virtual website (ipad.emsi.com.au) log in with a username and password4.These windows will show on the screen (next slide..)

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1. Log in

5. Projects

10. Individual project detail

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Building Layout Living area 1,2,3… Bedroom 1,2,3… Kitchen 1,2,3 Bathroom 1,2,3… Laundry 1,2,3… Outdoor/Garage Demand management section Behavioural recommendation Initiative photos

Case study coverage•Customer details•Auditor checklist•Utility accounts•Building property•Energy & Water service•Energy & Water improvement measures•Other recommendations (behavioural changes & thermal performance, message from assessor, etc.)

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Figure 1 Google map of the property

Assessor name: Roger Example Customer: The property owner is Joe BloggsAddress: 42 Example St, West End QLD 4101 (inner city)Customer Name: Joe BloggsCustomer Contact number: 07 3333 4444 Email: joe@email.com Assessment date on site: 3 /10 /2011.Audit number: S02-001 Your auditor number: S02 (shown in an audit number)

Figure 2 Front view of the property

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• You have assessed the property for potential Solar PV/Solar Hot Water; assessment of appropriate roof space, possible shading, roof orientation, switchboard etc.

• You entered the property at 9:10 am and completed the audit at 10:45 am.

• The client is clear about the necessity/purpose of a home assessment and ready to provide any information required .

• The necessary equipment required for the audit is on site.

• You met the client at the property. The client has been notified of any issues, programs, assistance, rebates involved (State, territory, industrial relations).

• All the Information (water, electricity bills etc.) required for the audit is gathered from the client

• Number of occupants: 6 people (45 year old male, 40 year old female, 2 male 2 female kids)

AUDITOR ASSESSMENT CHECK LIST

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BUILDING

• Building Size: approx. 200 sq.m.

• Building Type: free standing dwelling house, single storey, average 2.8 meter ceiling height. Originally built in 2000. No refurbishment.

• You have double checked the number of rooms in the building and confirmed that there are 6 bedrooms, 1 living area, 1 kitchen, 3 bathroom, 1 water closet.

• Home weekdays: yes the customer is often home on weekdays.

• The customer advised the temperature is good in winter and breezy and cool in summer.

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• Solar: There is no solar power installed however the customer is keen to install a 1.5 kW system.

• You estimate a total installation cost of $2,990 and advise the customer to connect to a net feed- in tariff ($0.44/kWh in QLD).

• For a tariff which might not be readable on the switchboard, refer to the energy bills.

• Metering: The customer wishes to install Web Metering on sub circuits if they can monitor energy use and save on energy bills.

ELECTRICAL / POWER

AUDITOR ASSESSMENT CHECK LIST

• The property has two dogs in the cage outside which could be a risk to you when performing a job. You informed the home owner not to let dogs out.

• You have double checked the number of rooms in the building and confirmed that there are 6 bedrooms, 1 living area, 1 kitchen, 3 bathroom, 1 water closet.

• You have also confirmed that the laundry room and swimming pool are located outside the building but under the same property.

• You have obtained a Google map (Fig. 1) to determine the property orientation for potential solar hot water or solar PV installation.

Figure 1 Google map of the property

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Period 1: 7/7/ 2011 – 13/10/2011, 90 days

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Period 2: 7/4/2011 -7/7/ 2011, 91 days 16

Period 3: 7/1/2011- 7/4/2011 , 90 days 17

Period 4: 5/10/2010-7/1/2011, 94 days18

ACCOUNTS

GAS ACCOUNT

LPG: 2 x 13.5 kg LPG bottles found outside the house. Customer advised that they use a total 3 bottles per year (one bottle replaced per year)

Householder has not kept the gas bills but estimated an expense of $216 per year for all 3 bottles.

Figure 29. 2x 13.5 kg LPG gas bottles

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Electricity Billing information

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PROPERTY LAYOUT

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ELECTRICAL / POWER

Figure 3 Meters and electrical switchboard

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SOLAR PHOTOVOLTAIC• The longest part of the roof is east facing.

However, there is suitable space facing north to install 1.5 kW solar panels.

• There is shading within 40 and 60 degrees of north which would lead to some shading in the afternoon.

• The roof pitch is 30 degrees

BUILDING INSULATION

• The customer claims that there is 100% reflective foil (sarking) insulation for the entire house.

• Ceiling insulation in the lounge only, accounting for approximately 30% of the house. Additional ceiling insulation can be installed in the ceiling area, costing around $12-20/sqm.

• The insulation type is Wool Batt with a rating of R2.5

• The customer advises you the thermal comfort of the property is cold in the winter and good in summer.

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HOT WATER HEATER• 315 litre electric storage hot water system on Off Peak Use Tariff

(see Fig.4)• The customer is interested in solar electric hot water and is

interested in the current solar hot water rebates. Total installation cost of is $5,699 and customer will pay $3,137 after STC discount ($962), Federal ($1,000) and QLD rebates ($600).

• There is no insulation on pipework. This cost $100 to insulate the hot water pipes.

• The water temperature, when tested at an untempered point is 60 degrees C

Figure 4 Hot Water System

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WATER USE

• No rainwater tank, bore or grey water used.

• Garden and trees have medium water demand.

• The irrigation method is a hose. Garden watering – 5mins/day, 5 days/week, 26 weeks/year.

• Home owner is keen to install a 4000 litre rainwater tank to top up pool and provide water for gardening. You have contacted some rainwater tank suppliers and estimated up to an installation cost of $1,000

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POOL AND SPA BATH• There is a 50,000L pool (See Fig. 5). There is no spa.

• Pool Filter (see Fig. 6) has a 1kW single speed pump which runs 8 hours a day in summer, winter, autumn and spring. The pool pump is on Tariff 11.

• The customer is concerned that the pool pump may have consumed a lot of electricity so he is considering connecting the pool to cheaper tariff.

• The customer is interested in replacing a single speed pump with a new 3 speed pump and a pump timer to cut down energy use for the pool. The pipe diameter is 50mm.

• The ideal runtime for the pump if a timer is used would be 8 hrs in summer, 4 hrs in winter, 6 hrs in autumn, and 6 hours in spring. You estimated $1,200 for a 3 speed pool pump and $300 for an additional pool timer.

• The top up water source is potable water.

• Backwash – 20 times a year.

• No pool blanket is used. A pool cover is highly recommended.

Figure 5 - 50,000 litre pool

Figure 6 Pool Filter

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Figure 5 - 50,000 litre pool

Figure 6 Pool Filter

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LOUNGE• Floor area of 55 m2. Large window facing south. There is ceiling

insulation as aforementioned.

• No zoning or draft proofing. An entry door has a large gap and can be sealed, costing $20/ door seal.

• Large clear glass door can be tinted to reduce heat gain through glass door.

• 8 x 62 W (this includes 12 watt ballast) MR16 halogen downlights used for 30 hrs a week in the lounge 52 weeks (see Fig. 7)

• 2 x 62 W MR16 halogen downlights used for 6 hours per day in the hallway, 7days a week for 40 weeks (see Fig.8)

• 2 x 62 W MR16 halogen down lights left on 4 hours per day near the outdoor area,7 days a week for 52 weeks (see Fig.9).

• There is the potential for the customer to replace all MR16 halogen fittings with 10W LED fittings.

Figure 7 8 x MR16 halogen bulbs in the lounge

Figure 8 2xMR16 halogen bulbs in the hallway

Figure 9 3 x MR16 halogen bulbs near an outdoor area

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LOUNGE• See Fig. 10 for entertainment appliances. Kids use them 5 hours/day, 7 days/

week, and always leave them in passive standby when not in use. Standby power is 8 watt when measured with Powermate meter. Power management can switch off standby energy from all entertainment appliance off at the wall costing $30 to buy.

• Two Laptops are used 6 hours/day everyday and no power management (hibernation) is activated and the laptops are rarely powered down when not in use.

• He was not aware where to place electronic waste and Last year, Joe disposed his old TV and old telephone and 3 CFLs in the recycle bin.

Figure 9 3 x MR16 halogen bulbs near an outdoor area

Figure 10 Plasma TV, 2 laptops, xbox, and DVD player

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LOUNGE

Figure 11 three phase reverse cycle air conditioner

Cooling Heating

Output (kW) 16 18Input (kW) 6 5.14EER/COP 2.67 3.5

• The air conditioner is a ducted reverse cycle non-inverter system supplying the kitchen area, lounge, and all three bedrooms. It is 5 years old and is on standard primary tariff. (See Fig. 11 for air conditioning specifications

• There are 2 zones;• Zone 1: for lounge and kitchen,• Zone 2: for all 3 bedrooms.

• The air conditioning is used for 10 weeks in summer 5 hours/day, 7 days/week, and about 5 hours per week for 13 weeks when it is only stuffy and hot in autumn & spring

BEDROOM 1

• Floor area of 12 m2. Southern window allows direct solar gain to the room.

• 2 x 62 W MR16 halogen down lights on for 6 hours per day, 7 days a week, 52 weeks per year. The customer indicates that although the lights are on for 6 hours per day the room is only used for about 3 hours per day.

• The customer also wants to replace bedroom MR16 halogen fittings with 10W LED fittings.

Figure 13 LCD desktop and laser printer in the Bedroom

•The ducted AC system supplies cooling to the bedroom (Zone 2) and is used in summer only, 5 hours/day, 4 days/ week for 13 weeks •There is one ceiling fan. It is sometimes in use for 3 hours, 2 days/week, 13 weeks in summer only.

•There is a computer used for 5 hours 6 days a week for 45 weeks (Figure 13), with one printer attached. The computer is usually left on standby (5 watt standby when measured with Powermate) rarely turn off at the wall. You recommend another power management at $30.

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BEDROOM 2,3,4,5,6 Area:•Bedroom 2: 16 sq.m.•Bedroom 3 &4: 14 sq.m.•Bedroom 5: 20 sq.m.•Bedroom 6: 16 sq.m.

Lighting

•Each bedroom has 2 x 62 W MR16 halogen down lights, use for 5 hours per day, 7 days a week, 52 weeks per year.

•The customer also wants to replace bedroom MR16 halogen fittings with 10W LED fittings. •Air conditioner:

•The ducted AC system supplies cooling to the bedrooms (Zone 2) and is used in summer only, 5 hours/day, 4 days/ week for 13 weeks.

•There is one ceiling fan in bedroom 2,3,4. It is sometimes in use for 3 hours, 4 days/week, 13 weeks in summer only.

•There is a laptop in each room the customer estimated children use around 4 hours 5 days a week for 45 weeks. Laptops have no active power management setting and is powered off after use.

Figure 12 2x MR16 halogen bulbs and ceiling fan in the Bedroom 1

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KITCHEN• Floor area: 18 sq.m. No direct solar gain.

• Lighting: 2x 15w CFLs (see Fig.14), used 7 hours a day, everyday for 50 weeks.

• AC system: same usage as in the lounge.

• Gas cooktop: use once a day, 11 times/week, 50 weeks per year for 20 mins on average. Only 1 main burner is used during cooking (see Fig 15).

• Rangehood light is integrated with an exhausted fan and operated during cooking.

• Electric oven: on average 6 hours a week, for 40 weeks.

Figure 14 2x CFLs in the kitchen

Figure 15 Cooktop, oven, and rangehood

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KITCHEN

Figure 16 Microwave, kettle Figure 17Dishwasher

• Microwave: use 8 mins a day, 5 days/week, for 52 weeks (see Fig 16).

• Kettle: boil a full kettle twice a day, 6 days a week (see Fig 16).

• Toaster: use twice a day 6 days/week

• Dishwasher: 13 place settings, used once a day 7 days/week, 48 weeks per year. There is a hot water connection to the dishwasher and it is on Tariff 11(Fig 17).

• Sink dishwashing twice a week for 40 weeks, no pre-rinsing.

• Kitchen Tap: when measured, it takes 7 seconds to fill up one liter container.

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• There is one fridge in the kitchen area.

• Seals are in good condition and on primary tariff.

• It is 5 years old (Fig. 18 for specifications).

Figure 18 Refrigerator in the kitchen

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KITCHEN

Figure 19 Food Composting

• Joe and family place your kitchen waste into the a container used as fertiliser (Fig. 19).

• The family has one, typical 240Lwaste bin and 1 recycling bin. Every week, Joe notices that the waste bin is always full and the recycling bin is 75% full on a collection day.

• The family is always sure to take a carry bag for shopping.

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Bathroom 1,2,3 & water closet

Area•Bathroom 1: 7 sq.m.•Bathroom 2: 8 sq.m.•Bathroom 3: 4 sq.m•Water Closet: 2 sq.m

Figure 20 Bathroom 1 bathroom

Lighting Bathroom 1,2,3•The integrated 1 x 75W incandescent light and exhaust fan fitting in the bathroom is used for 1 hour/day everyday. The incandescent could be replaced with 15w CFL. •The 2x 275W tastic lamps are used for 1 hour a day, 7 days a week for 20 weeks in the colder months. These are often left on unnecessarily causing wasted energy. •Water closet: 32 w circular fluorescent, 4 hours per week

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Bathroom 1,2,3 & water closet

Water use•3 shower booths, 2 basin sinks, 3 toilets (see floor plan).•Shower 1: twice a week, 48 weeks, 4 people, 7 mins each time•Shower 2: twice a week, 48 weeks, one person, 7 mins each time•Shower 3: twice a week, 48 weeks, one person, 7 mins each time

Note:•The water used for shower, sink and bath is mains supply potable water •The bathroom taps, when measured with a cup indicates 0.8 liters in 4.5 secs. •The shower, when measured with a cup indicates 1 liter in 6.5 secs. •A standard sized bath in bathroom 1 is used approximately once a week for 10 weeks per year at full capacity.

Figure 21 Water Closet – toilet and light bulb

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Laundry Room•Area: 4.5 sq.m. •1 x 20 W CFL, 2 hours/week•8 kg clothes washer (Fig.23) is used 5 times a week with warm water (40 C) for 50 weeks.

– 3.5 energy rating (67 kWh cold wash and 311 kWh hot wash)– 4 star water rating (77 Liters/wash)– Clothes washer on a standard tariff – One high flow laundry tap, when measured with a cup indicates 1 liter in 3.5 secs. It is

used 3 times a week for 15 mins. The customer would also like to upgrade to a more water efficient tap in order to save water.

Figure 23 Clothes Washer(3.5 Energy rating, 67kWh cold wash, 311 kWh

hot wash, 4 star WELS, 72 L)

LAUNDRY ROOM

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LAUNDRY AREA

• Laundry area is outside laundry room• The water used for a old sink and washing machine is mains

potable water measured at 4.5 secs per litre. The customer would also like to upgrade to a more water efficient tap in order to save water.

• You recommended an 4 star water efficient tap ($90) to reduce wasteful water use.

• Lighting:1 x 20w fluorescent and 3 x 62w halogen globes used approximately 2 hours a day, 5 days a week for 50 weeks (see Fig.22). The customer would like to replace the MR16 halogen fittings with 10W LED fittings.

Figure 22 2ft fluorescent and 3 x MR16 halogen bulbs

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LAUNDRY AREA

Figure 24 5kg clothes dryers

• Clothes dryer (Fig 24): 5kg clothes dryer with a timer, heavily used about 7 times a week for 45 weeks and on the standard tariff.

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OUTDOOR/ GARAGE

• Lighting: • 1x 23W paraflood CFL globe, and 1x 150w paraflood

globe left on 5 hour a day, 7 days a week for 50 weeks (see Fig. 25)

• 4x 32w circular CFLs, 2 x 62wMR16 halogen bulbs left on 5 hour a day, 7 days a week for 50 weeks (see Fig. 26)

Figure 25 Left-PAR 38, Right-CFL Par38 Figure 26 Outdoor lights

(4x 32wcircular CFLs, 2 62wMR16 halogen bulbs)

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TRANSPORT

• Joe lives 5 kms away from his workplace and takes the bus 5 days/week, approximately 50kms per week, total 250 kms all family members (per week).

• All family members commute by a small car (E10) at weekends approximately 200 kms/week, 52 weeks.

• During conversation between you (assessor) and Joe (property owner), you discuss the possibility of behavioural alterations to reduce energy use in his property, as follows.

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BEHAVIOURAL

• Reduce hours of exterior lighting overnight when not needed – saving 99 kWh p.a.

• Switch off some internal lights in living area & kitchen and open the curtain to take advantage of natural light – estimated saving 330 kWh savings p.a.

Lighting

During conversation between you (assessor) and Joe (property owner), you discuss the possibility of behavioural alterations to reduce energy use in his property, as follows.

Admin Energy• Switch off office & entertainment devices

at the wall after use – estimated saving 80kWh p.a

Climate Control• Increase the ducted air conditioner temperature setting from 23°C to 24°C for the

whole house in summer – saving 222 kWh p.a. (based on a 10% reduction in air conditioning energy use per 1°C reduction)

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BEHAVIOURAL

Showerhead

• Reduce your current shower time from 7 mins to 4 mins to save water – estimated saving of 18 kL p.a.

Washing MachineUse washing machine at full load to avoid unnecessary washes – estimated saving of 4 kL p.a.

Note: calculate energy & water saving can be calculated by using the formulas below.

• Energy (kWh)= Power (kW) x usage reduction(hours reduction p.a.) • Energy (kWh)= Power reduction (kW reduction) x usage reduction

(hours p.a.)• Water (kL)= Water flow reduction (L/min) x Total mins p.a. (1 kL/1000L)• Water (kL)= Water (L/min) x Total mins reduction p.a. (1 kL/1000L)

Food Preparation

• Avoid cooking several small meals and instead, allow family members to prepare meals together – reducing total food preparation energy in oven and cooktop by 309kWh p.a.

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Note:Information is automatically saved. After completion, return to Project page•To export•To upload (to EMSI)•To delete •To Synchronize •To edit•To create another projectFinally Logout

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Contact Ussupport@emsi.com.au

www.emsi.com.auPh: 1300 661 220 or  07 3051 0014 

Session 13 Case Study & iPad Use