18 Aylton Street, Cooper PlainsTable of ContentsIntroduction1.1 Background1.2 Scope1.3 Methodology1.4 Source of Information and Assumptions1.4.1 Electricity Bill1.4.2 Multifunction Power Readings1.4.3 Lux Meter Readings1.44 Manufacturer Specifications1.4.5 Estimated Weekly Run- Times1.5 Site Issues2 THE SITE2.1 General Characteristic of the Site2.2 General Description of Main Appliances2.2.1 White goods2.2.2 Hot Water2.2.3 Lighting and Fans2.2.4 Small Household Appliances3. Energy Consumptions3.1 Overall consumptions3.2 Seasonal changes of energy consumption3.3 Energy usage Assumption3.4 Appliances4. Audit measurement and calculations4.1 Lighting and fans4.2 White goods4.3 Small Household appliances4.4 Standby power5. Energy management opportunities5.1 LED Lighting solutions5.2 Automated Lighting control systems5.3 Solar Powered Energy System6. Recommendations6.1 Recommendation for Hot Water6.2 Recommendation for Heating and Cooling6.3 Recommendation for Lighting6.4 Recommendation for Solar6.5 White Goods7. Conclusion8. References9. Appendix -Manufacturer SpecificationIntroduction 1.1 BackgroundThe audit assignment on energy was taken up in line with the course Energy Efficiency. In order to save energy, the audit was conducted at our premises 18 Ayton Street, Cooper Plains, housing four tenants on co- sharing basis. The Owner of the house does not stay with us. In connection with the review, the actual measurements were taken during the period from mid-March to April 2019. The purpose of the review is to observe the actual consumption of energy for daily and weekly periods and estimating for half yearly and full year periods in respect of the above residential unit and also monitoring the performance of every appliance used in the residence. The details have been collected in this regard and analyzed for the trend energy consumption .It also gave me an idea about the energy requirement. After review of consumption, We are able to suggest alternative methods so that it would reduce the energy cost in the future.1.2 ScopeThe report not only covers the energy usage at our house but also reviews the design and utilization of the electrical appliances that are being used now in the house. A few appliances are associated with the Mains, for example, lights, fans, stove, water heater etc. Several assumptions and estimates were made to calculate the energy based on the location of power points. This report also recommends about the energy saving opportunities.1.3 MethodologyThe trend in consumption of electricity was taken into account to estimate the energy consumption of appliances during different seasons. Survey was done regarding the consumption pattern of different residents during each season. The lighting of house is measured with the help of the instrument, Lux Meter. All the data are evaluated for the energy usage and cost savings. Multifunction Power Meter was also used power measurement purpose in this assignment1.4 Source of Information and AssumptionsThe sources of data as well as assumptions for the energy audit are listed below:1.4.1 Electricity BillThe actual energy charges paid for the last quarter was taken from the bill given by the owner. It is noted that an amount of AUD.619.01 was spent on electricity bill for the total usage of 1735 kwh for the quarter ending Feb2019 .Based on this, daily usage was arrived at 19.3 kwh. The current quarter bill amount is compared with that of other quarters for usage and shown below.The bill tariff of the previous quarter is given below:Details (24/11/2018 to 21/02/2019) Usage Rate (EX.GST) Tariff peak only (24/11-31/12) 455 kWh $0.312021Tariff peak only (1/1-21/2) 592.57 kWh $0.294885 Tariff controlled supply (24/11-31/12) 295 kWh $0.261289Tariff controlled supply (1/1-21/2) 392.27 kWh $0.278412Daily supply charge 38 days $1.278000Daily supply charge 52Days $1.297000 1.4.2 Multifunction Power ReadingsMS-6115 Multifunction Power Meter was used to take readings from all the appliances.1.4.3 Lux Meter ReadingsA Lux meter was used to study the level of luminance in all the rooms. After that the result was compared with normal luminance level.1.44 Manufacturer Specifications The specifications given by the manufacturers in the appliances were utilized to confirm the measurement results. Further, it also facilitated to ensure the accuracy of functioning of the Power Meter. The LUX Meter readings were compared with the Manufacturers specifications for various lighting source to know the efficiency of the lights in the house.1.4.5 Estimated Weekly Run- TimesA study of weekly consumption was done for all appliances and the details of the study are furnished below.ApplianceWeekly usage Approximation/ Rooms (in hours)Room1Room2Room3Room4Total weekly usage (in hours)Common ApplianceVacuum cleanerToasterKettleInduction stoveOven / MicrowaveWashing machineRefrigeratorIron0.0.150.0.0510.50.2512.533.752.75310.51.52311 ****11.50.50.52.250.22.7512671683.5Personal Usage Table lampPhone ChargerLaptop Charger35453030Charged to full battery on daily basis751256575140340The usage timing of various common appliances among 4 tenants in our site have been recorded. Also tenants provided us with the personal timing consumption of table lamp, Phone charger and laptop charger.* Refrigerator is a common appliance and running 7 days a week for 24 hours1.5 Site IssuesMeasurement could not be taken inside the rooms of three Tenants due to privacy reason. However, they cooperated while taking survey in other common areas and also provided us with personal consumption timing. 2. THE SITEThe site layout is as below2.1 General Characteristic of the SiteDining cum Kitchen, Laundry room, Toilet and bathroom are shared services among 4 tenants. Each room of tenant consists of Study table, bed, ceiling fan, light and study lamp2.2 General Description of Main AppliancesThe energy consuming devices in the house were listed and analyzed under the following categoriesWhite goodsHot water heaterLighting and fanSmall house hold appliances2.2.1 White goods White goods are devices requiring heavy power when compared with other devices in the house (.e.g.) Refrigerator, Air conditioner, washing machine etc. Power consumption for white goods appliances are calculated based on the manufacturers power specification as shown below.ApplianceModelPower Rating (W)Total weekly usage (hours)RefrigeratorWestinghouse 230L 300168Washing machineLGWTG65204207Micro wave ovenEuro EBC 46S120062.2.2 Hot WaterThe power supply for hot water heater shall be directly from the mains. The mains shall be 240v AC, 50 Hz. The Switch board also consists of an isolating switch2.2.3 Lighting and FansThe entire house is fitted with CFL bulbs excluding table lamps that are fitted with halogen bulbs. Every bedroom has a 3-blade ceiling fan except common area. There is no air conditioner or heater used in the entire house.2.2.4 Small Household AppliancesThe other appliances are listed below and only laptop charger draws standby power even when not in use.ApplianceModelManufactures power Rating (w)Standby Power (w)ToasterHomemakerTA83017500KettleHomemakerWK83211850-22000IronPanasonic NI322c3000Table LampShellbelt900022559530Phone ChargerSamsung charger120Laptop ChargerDell inspiron i51600.1RouterNetgear31-5G60Vacuum cleanerPiranha Ruby2400W24000Due to privacy issues the laptop and mobile specifications were not obtained from other Tenants and hence the assumption was made based on Room 2.3. Energy Consumptions3.1 Overall consumptions The weekly energy consumption was calculated.The details are as followsCategoryWeekly energy consumption(kWh)White goods60.5Hot water Heater20.8*Lights and Fans21.1Small Appliances32.57Standby0.245Total Energy Consumption per Week135.105*- The hot water heater was inaccessible in the site. The energy consumption was made for the hot water heater based on the following calculationAverage daily consumption = 19.3 kWh (Refer 1.4.1)Average weekly consumption = 19.3*7= 135.1 kWhWeekly energy consumption for the remaining categories=114.45 kWhPer assumption, the energy usage for water heater = 20.855 kWh 3.2 Seasonal changes of energy consumptionAlmost all the appliances used in the house have a steady utilization throughout the year. However, the energy utilization doesnt vary much in different seasons of the year. The usage of the light in the house will be higher during the winter month because of less hours of sunlight and there maybe chances of increase in energy consumption. Similarly, there will be drop in fan energy usage during winter month.Similarly, the water heater energy consumption will be high during the winter season due to low ambient temperature affecting the water temperature from the main supply.3.3 Energy usage Assumption:The following assumptions were madeThe difficulty in accessing few electrical points such as heaters made us back calculate the power consumptionThe privacy of tenants hindered us directly measuring the power consumptions and made us rely on the consumption timing data provided by the tenantsThe refrigerator shall always be connected to power3.4 AppliancesThe energy usage of all the appliances in my house were verified for design and utilization purpose to find the efficiency of the appliances to save on energy.4. Audit measurement and calculations4.1 Lighting and fansThe lighting solutions in the house were measured using Lux measurement device and energy consumptions of lighting and fans in the house is presented below.LocationLocation of Lux measurementLuxMeasuredRecommended LuxRoom-2Surface of the bed60160Surface of the study table120Entrance doorAt the entrance94.640Halfway Room- 1 & 2In the hallway of the house5540KitchenSurface of the kitchen147160Common toiletSurface of the toilet55.240Common bathroomSurface of the sink4640Laundry roomSurface of the laundry room9180The lighting solutions are measured with the help of Lux meter where ever possible surface is there.The recommended Lux level is obtained from the AS/NZS1680 Series to provide minimum level of the particular task (service, 2019).In spite of the fact that the guide depends for the most part on work environment of lighting arrangements, however, they were extended to domestic lighting calculationsThe lighting in rooms, kitchen, restrooms and hallway are at par or even higher compared with the recommended lux levelsRoomTypeRating(W)Total number of installationsUsage of the entire household in April(hours/week)Winter usage of the entire house6))hold(Hours / Week)Weekly winter energy consumption(kWh)Summer usage of the entire household (Hours/ week)Weekly summer energy consumption (kWh) (1) (2)(3)(4)(5)(6)(3 x 6)/1000(7) (3 x 7)/1000Table lamps in bedroomHalogen424125140.6255.90625109.3754.59375Bedroom Lights CFL204225252.565.0512196.8753.9375Bedroom ceiling fan75cm, 3Blade50465.6250065.6253.28125EntranceCFL1513033.6750.50512526.250.39375KitchenCFL1525460.6150.90922547.250.70875Halfway-1CFL1511213.50.202510.50.1575Halfway-2CFL2011314.6250.292511.3750.2275ToiletsCFL2011681893.781472.94BathroomCFL2021681893.781472.94Laundry roomCFL15240450.675350.525Total (kWh / Week )21.1018 19.705The number of daylight hours data was taken from the Australias official weather website-Government of bureau of metrology (Australia, 2019)The weekly hours of sunlight was calculated as followsAverage sunshine in April = 8 (hours)Average sunshine in June =7(hours) =12.5% hours of sunshine less than April.Average sunshine in November =9 (hours) =12.5% hours of sunshine more than April.The summer usage shall be 12.5% lesser for the lights and the winter usage shall be 12.5% shall be higher respectivelyAll the lights in the site were taken into account for power consumptionThe power consumption for ceiling fan was considered only for summer season as it is assumed that no ceiling fan was used in winter season4.2 White goodsApplianceModelPower Rating (W)Total weekly usage (hours)Weekly energy consumptions (kWh)(1)(2)(1 x 2)/1000FridgeWestinghouse 230L30016850.4Microwave ovenHomemakerEW925EAB120067.2Washing machineLGWTG652042072.94Total60.54The energy consumption of all the white goods is not expected to fluctuate over different seasons because the usage need also doesnt fluctuate along with the seasons.The assumptions are as followsThe refrigerator shall be in working condition all the time 24 hours and 7 daysMicrowave and washing machine are need based as this is the shared facility4.3 Small Household appliancesThe energy consumption of the small household appliances is shown below.The usage of Kettle, iron and laptop charger was measured using power meter. For instance, the usage of Kettle was for 2.5 hours per week.For the measurement of the kettle the energy reading of 0.3kWh was obtained over 5 minutes to boil the 1.5 liter of water. The energy reading was 3.6 kWh for an hour. The weekly usage was obtained by multiplying consumption hours and power consumption. The same was done for iron and laptop charger also.ApplianceModelPower meter reading (w) Calculated energy values (kWh)Total weekly usage (hours)Energy consumption per week (kWh)RouterNetgear31-5G61681.008ToasterHomemakerTA83017700.180.1386Iron0.153.50.525KettleHomemakerWK83213.62.59Vacuum cleanerPiranha Ruby2400W161011.61Laptop chargerDell inspirion i50.0633019.8Phone chargerSamsung0.0175perdayCharged to full battery basis.0.49Total32.5716In our residence, all are using Samsung mobile phones and hence the manufactures specification of power consumption was taken into consideration for the calculation .The maximum battery capacity of 3500 mAh. The basic assumption is such that all phones need to be charged from Zero to full daily. This accounts to 0.0175kWh. This is then equated for 4 residents and 7 days in a week to get the consumption of deviceThe laptop shows fluctuation while measuring on the power meter using more and less application. To calculate the energy consumption per week it is further multiplied with calculated energy values (0.06) and weekly usage (330 hours)4.4 Standby powerApplianceStand by consumption(w)Weekly duration in standby mode (hours)Weekly energy consumption(kWh)Washing machine0.51610.07925Laptop charger0.13320.0332Microwave0.8165.750.1326Total0.245kWh/weekSome of appliances draw power while not in use. They are known as standby power. It was made evident with measurement of various devices. They are not too big in terms.The standby power is calculated by subtracting weekly run time of the appliance from weekly usage of the appliance. The total no. of usage hours per week (24*7=168). We can observe that the standby energy consumption doesnt consume much energy in the house but still it contributes to the energy consumption and electricity bill of the house.5. Energy management opportunitiesThe followings steps are to be taken to minimize the energy consumption.5.1 LED Lighting solutionsThe efficiency of the house lighting solutions increases by shifting from CFL to LED. The following advantages are evidentThe energy consumption is lesser in LED than CFLLuminance is enhanced in LED than CFLArea CFL (w)NoUsage hours/week Energy cost / week ($)LED(w)NoBulb Costs($)Energy cost/ week ($)Savings/ week($)Entrance151300.16917.20.100.06Kitchen152 540.58151220.290.29Halfway-1151120.06917.20.040.02Halfway-2201130.09917.20.040.05Bathroom202 1682.42151220.911.51Toilet201 1681.21151220.910.30Laundry152 400.43151220.220.21Total4.95109.62.512.44The energy cost is calculated by average cost factor $ 0.36/kwh. The energy cost of LED bulb is calculated by multiplied LED (w), no .of hours usage and average cost factor. The price of the LED bulb has been taken from the Philips website.Total LED bulb costs=$109.6Energy cost savings after switching to LED Bulbs=$2.44Payback period =109.6/2.44*7= 314 days (say 10 months)Similarly, halogen bulbs can also be replaced with LED Bulbs based on the following calculation:Power rating of halogen Bulb = 42 WUsage of 4 table lamps per week = 125 hoursPower rating of LED Bulb = 9 WEnergy cost of the halogen lamp = $1.89Energy cost of the LED Bulb = $0.40Saving in Energy cost = $ 1.48Total cost to replace with LED Bulb = 4*7.2=$29Payback period = 29/1.48 *7= 138 days (say 4.5 months)From the above the calculation we can understand that switching over to LED Bulb will result in a saving of $1.48 per week. Due to cost saving and energy efficiency, it is recommended to replace halogen bulb with LED bulb.5.2 Automated Lighting control systemsLighting control systems plays an important role in residential building . Benefits like reduced energy consumption, operational convenience. A best example is Philips Hue White Starter kit E26. This starter kit includes two E26 bulbs, warm white light; control your voice, and Hue Bridge. The main advantage of this lighting system is:(i) Motion detected, when there is no motion the bulb automatically turns off.(ii) It can control remotely .Even if we are not at home, it can control through app.(iii) The Hue(iv) Bridge can be controlled through voice recognizer by Google Assistant, Apple home kit.(v) It can synchronize with sunrise and sunset. (https://www2.meethue.com/en-us)To understand the energy cost, the lighting system is tabulated below.Area Usage hours per weekEnergy cost per week ($) per table5.1LEDNoPower rating (W) Estimated weekly duration of light Requirement(Hours)proposed Energy consumption/Week(kwh)Proposed Standby Energy Consumption/week(kwh)Proposed Energy cost/week($)Savings per week($)Entrance300.161920.0180.06640.03Halfway1120.061930.0270.0660.03Kitchen540.58115200.3000.05920.13Halfway-2130.091930.0270.0660.03Common bathroom1682.4211590.1350.06360.07Common Toilet1681.2111590.1350.06360.07Laundry400.4311520.0300.06640.03Total4.950.6720.45120.394.56The tabular column gives the information about the estimated weekly duration of light requirement for the particular area.The motion detector switches on the light when there is a motion and automatically switches off when there is no motion detected for a minute. For entrance, it is considered that a household leaves and enters at least once in a day and it is 2 minutes per person.Hence, 7*2=14*4persons=56minutesThe remaining 64 minutes is taken into account for guests, residents leaving and entering more than once in a day. For calculating the stand by power we have multiplied the weekly number of hours with factor 0.4. to calculate the energy consumption per week.The above tabular column is calculated only for common area and individual bedroom is not calculated in this report. We are not sure how comfortable it would be with automated lighting control system in bedroom.The starter kit will have two 9W bulbs and five more bulbs need to be purchased in total of 7 bulbs. And five motion detectors need to be purchased as well.Detector 1- To control from Entrance to Halfway1Detector2 To control from kitchenDetector3- To control from halfwayDetector4 -To control from BathroomDetector5- To control from Toilet area.Cost of Philips Hue starter kit ($) 56Cost of 5 bulb Philips Hue E27 LED Bulb ($29*5) 145Cost 5 Philips Smart Wireless smart sensor ($59.95*5) 300Total cost for installing Philips Hue control system ($) 501Energy cost savings per week ($) 3.72Payback period ( 501 /4.56*7= 769 days) 2 years and 1 month5.3 Solar Powered Energy System The purpose of installing solar panel is to reduce energy consumption of the house. After comparison with various service providers, a suitable provider is chosen, and quotation obtained is shown below. The main reason for choosing this provider is cheapest option among all the providers. For selecting the best solar panel, it is chosen from the website www.solarchoice.net.au. Residential Solar systemINPUTTotal system Size5kWAverage daily sun hours7HoursTotal cost of solar system5274$ Cost of retail electricity0.36$Self-consumption 1Average daily consumption19.3kWhOutputSolar power proposed & Consumed14.475kWhPower purchased from Grid4.825kWhValue total power consumed / savings5.211$Total electricity charges with Solar1.737$Total electricity charges without solar6.948$ It is observed that by use of solar power system, there will be a daily saving of $ 5.21 in consumption of Power. There is no power supplied to the GridConsidering the daily saving, the entire Project cost of $5274 can be recovered in5274/5.21 =1012 days which is equivalent to 2 years and 10 months under the Payback method.Quotation of Solar System 6. Recommendations6.1 Recommendation for Hot WaterThe heating unit must be operated only at the time of non-peak electricity mode. The volume of water heated and stored during non-peak hours can be used in peak time also to save on electricity bill.Immediate repairs should be done if there is any leakage in the appliance and water taps.Cold or warm water to be used to the maximum extent for the washing machine and dishwasher.Water heating unit should be checked periodically and maintained according to the manufacturers instructions.Installing high efficiency showerhead and faucet aerators will reduce the amount of energy required in the household.6.2 Recommendation for Heating and CoolingProper installation should be made for a comfortable house combined with passive solar design and drought proof.Select the proper size heater as oversize heater will cause waste of money and energy.Air sealing the roofPeriodically clean the air filters as it should be free from dust.Select better efficiency appliances by shifting from 3-star to 5- star rating. 6.3 Recommendation for Lighting? As far as lighting is concerned, there is more scope for reducing the energy cost by replacing CFL bulbs with energy efficient LED bulbs .Per Table in 5.1, the weekly saving in cost will be $2.44 and the cost of LED bulb can be recovered in 10 months. ? Similarly, by replacing halogen bulbs with LED, a saving of $ 1.48 can be achieved per week and the cost of replacement can be recovered in a period of 4.5 months.By switching over to automated lighting control system a further saving of $ 4.56 per week is possible and the cost of purchase can be recovered in 2years and 1 month.6.4 Recommendation for SolarInstallation of solar power systems can significantly reduce the energy cost of the house. There will be a daily saving of $5.21 as explained in Table 5.3. The entire project cost can be recovered in a period of 2years and 10 months.6.5 White Goods Further, there is scope for reducing the energy consumption in the house in respect of white goods especially washing machine and Refrigerator when the latest energy efficient models are put into use.7. ConclusionAs part of Energy audit, the energy consumption and efficiency of different electrical appliances in the house have been reviewed and recommendations given above to save on energy cost.It may be observed that by adopting the above recommendations, there will be a daily saving of $ 6.44 (94%) with solar power and $ 1.23 (18%) without solar power as against the daily average energy cost of $6.88.It may be noted that by implementing the above solutions, the ozone depleting substance can get reduced and any harm to the Society avoided by which current and future generations are benefited.8. ReferencesAustralia, G. o. (2019, 04 20). Retrieved from Australias offical weather forecasts & weather radar- Government Bureau of Meteorology: www.bom.gov.au/Choice, S. (2019, 04 24). Retrieved from Solar choice-Australias Solar Power Comparsion& Brokerage: www.solarchoice.net.au.Lighting, P. H. (2019, 04 24). Retrieved from The official site of Philips Hue | Meethue.com: https://www2.meethue.com/en-usservice, A. B. (2019, 04 27). Retrieved from Interior Lighting Levels Australian Building Services WordPress.com: https://australianbuildingservices.wordpress.com/lighting-levels/.9. Appendix -Manufacturer SpecificationVacuum cleaner- https://www.hegroup.com.au/index.php/piranha-ruby-2400w-bagless-vacuum-cleaner.htmlRefrigerator-https://www.westinghouse.com.au/fridges/wtb2300wg/Washing Machine- https://www.lg.com/au/washing-machines/lg-WTG6520Microwave Oven https://www.kmart.com.au/wcsstore/Kmart/pdfs/41928523%20-%2025L%20Microwave%20Convection%20Oven%20(Stainless%20Steel).pdfRouter-http://www.netgear.com.au/home/products/networking/wifi-routers/default.aspxWater Heater-https://1stchoicehotwater.com.au/wp-content/uploads/2016/08/Everhot-Owners-Guide-and-Installation-Instructions.pdfGet Help With Your EssayIf you need assistance with writing your essay, our professional essay writing service is here to help!Find out more
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