Level 1 Energy Audit Report. For: Gladstone Regional Council

Transcription

1 Level 1 Energy Audit Report For: Gladstone Regional Council Gladstone Art Gallery & Museum Conducted by: Jamie Rogers - EcoXpert Barnes Electrical Service 1/54 Callemondah Drive Gladstone QLD 4680 Mob: sales@barneselectrical.com.au Submitted to: Heather Riches & Sonja Thomas Lyons Street Depot sonjat@gladstonerc.qld.gov.au Audit Report Date: 24/03/2016 Audit Date: 22/03/2016

2 Table of Contents SECTION 1: INTRODUCTION AND EXECUTIVE SUMMARY 2 SECTION 2: BACKGROUND AUDIT SCOPE AND LIMITATIONS METHODOLOGY SITE INFORMATION SITE VIEW 5 SECTION 3: ENERGY CONSUMPTION ANNUAL ENERGY BILL ANALYSIS 6 SECTION 4: REVIEW OF SITE ENERGY USE AND OPPORTUNITIES HVAC CONTROL to Identified HVAC opportunity Air conditioner Identified HVAC opportunity HWS 13 SECTION 5: QUICK WINS & FURTHER SCOPE 14 SECTION 6: SUMMARY OF OPPORTUNITIES 14 SECTION 7: ASSUMPTIONS 15 SECTION 8: GLOSSARY 16 1

3 SECTION 1: INTRODUCTION AND EXECUTIVE SUMMARY Barnes Electrical Service, certified EcoXpert, has been engaged by the Gladstone Regional Council to perform a simple walkthrough energy audit of the Gladstone Art Gallery & Museum and provide recommendations. This energy audit report: Evaluates overall energy consumption Illustrates current energy use Identifies and outlines potential areas of energy waste reduction and cost savings. The overall energy consumption of the site is summarised as follows: Energy Type KWh per Measured Period (9mths) GJ per year Energy Cost $ (inc. GST) GHG Emissions Tones CO2 Cost $/KWh Blended Rate (inc. GST) Electricity 541,683 1, $97, Table 1: Overall energy consumption of Gladstone Art Gallery & Museum Based on site observations, simple data analysis and meeting with Joanne Duke and Barnes Electrical Service, the following recommendations are listed at the end of this report to improve site energy efficiency and performance. Actions are related to: Operational practice Energy monitoring and tracking Lighting & Lighting control Heating, Ventilation and Air Conditioning (HVAC) control Implementation of all the identified opportunities listed at the end of this report is expected to deliver ongoing annual savings of $11, This equates to: Approximately GJ of energy savings (electricity) annually. Approximately 12% reduction of annual site energy consumption annually Approximately tco 2 emission reduction annually Total estimated implementation cost is $6,900, providing a payback period of approximately 0.58 years. In addition to these specific actions we have identified a number of low cost initiatives that may be actionable immediately that could also save energy with very little cost to implement. 2

4 SECTION 2: BACKGROUND The main objective of this walkthrough audit is to identify how energy is being used in the Art Gallery & Museum and help identify practical and cost effective energy saving measures that will reduce energy use and lower operating costs. 2.1 AUDIT SCOPE AND LIMITATIONS This audit report will: Evaluate Client site s overall energy performance. Highlight number of improvement opportunities and analyse the potential impact after the implementation. Provide an estimation of payback periods implementing the recommended actions. Demonstrate the reduction of environmental footprint. Identify quick wins and areas for further evaluation. In this walkthrough audit, the following major building-related activities were investigated: Energy supply and metering Lighting consumption and controls Climate control (Heating, Ventilation and Air Conditioning) The saving and cost calculations performed in this report are estimates only. If Gladstone Regional Council wants to implement any of the actions listed in this report, detail review will be required to get an accurate savings and implementation costs. 3

5 2.2 METHODOLOGY The following activities were performed during and after the Walkthrough Audit in Art Gallery & Museum: Short kick-off meeting the Property Team Members Analyse of existing energy bills and data Site inspection Interviews and consultation with staff Review of all major site activities, equipment s and process A written report detailing findings, recommendations, approximate costing and savings with payback times. 2.3 SITE INFORMATION The Gladstone Regional Art Gallery & Museum was established in 1985 and is a community cultural initiative funded by the Gladstone Regional Council. It is dedicated to promoting art and heritage for and by the communities of the Gladstone region and Central Queensland, acting as a focal point for the preservation and display of the region's history and cultural heritage. After talking to the Art Gallery & Museum management team, Barnes Electrical Service has collected the following information: This site is funded by Gladstone Regional Council and operates Monday to Saturday, from 10am to 5pm. The site is approximately 6,400 Square meters of covered area Electricity is the main source of energy Site has recently completed replacements of Large Air-condition Systems Air-conditioning requirements for the Touring Arts needs to maintain at fixed set points in the Main galleries and storage rooms at 21 Degrees (-1/+2) air temperature at 50% (+/-5) humidity. 4

6 2.4 SITE VIEW Figure 1: Real view of Gladstone Art Gallery & Museum Figure 2: Aerial view of Gladstone Art Gallery & Museum 5

7 SECTION 3: ENERGY CONSUMPTION The major energy consumptions at this facility are: Heating, Ventilation and Air Conditioning (HVAC) Lighting 3.1 ANNUAL ENERGY BILL ANALYSIS Electricity Consumption: Date Consumption Total Cost Consumption Blended Rate GHG Emissions KWh ($ ex GST) GJ ($/kwh) Tonnes CO2e Jul $10, $ Aug $11, $ Sep $11, $ Oct $10, $ Nov $10, $ Dec $11, $ Jan $10, $ Feb $10, $ Mar $11, $ TOTAL $97, $ Table 2: Electricity consumption for 9 months Electricity Consumption (9mths) Consumption (KWh) Jul-15 Aug-15 Sep-15 Oct-15 Nov-15 Dec-15 Jan-16 Feb-16 Mar-16 Figure 3: Electricity consumption trend 6

8 Figure 4: Gladstone Climate for 2015 Gladstone Art Gallery - Electricity Usage (Iterval Data) Summary Total 5 0 Figure 5: Gladstone Art Gallery Electricity Usage (Interval Data) for 2015 From the figure 4 and figure 5 above, it is noticeable that site reflects the outside climate. Which identifies that the air-conditioning is the main energy consumer. 7

9 SECTION 4: REVIEW OF SITE ENERGY USE AND OPPORTUNITIES 4.1 HVAC CONTROL Onsite meeting with Joanne Duke, it was stated that the Art Gallery is required to have the Airconditioning maintain at fixed set points in the Main galleries and storage areas to meet the requirements for the Touring Arts shows/displays. In discussions, it was found that the site has some latitude in set point adjustments in the cool months. As the result of the required set points, the running cost of the air-conditioning is high. The site has recently had the Main Gallery, Storage area, Tower and the Entry/hall ducted airconditioning systems replaced to improve the effectives of the system to maintain the set points. The systems were replaced in different stages which is hard to clarify how much the new systems has reduced energy used. But there has been some reduction in power usage. Throughout the Audit process, it was it was notice that there are different air-conditioning systems that are trying to cool the same areas. As the larger systems have been replaced or at the age of replacement, the additional smaller units may not be required. We recommend GRC to get an Aircondition Engineer or consultant to assess the whole building (new and old sections) installation to ensure all sections/systems are working together not against each other. Due to the building lay out, there are common areas shared by different sections like stair wells, Link Spans, admin offices and access points (rear personal entry points). We recommend to ensure doors that separate these areas to be closed to prevent cooling spaces that used in short periods. Examples: - Door at downstairs office to kitchen/hallway - Rear personal access exit/storage door to kitchen/hallway - Closing time, close stair well doors on exit Audit findings: Main Hall (64kw)- Temperature Adjustment in Cold Months Entry/Hallway (30kw)- Temperature Adjustment in Cold Months Tower (25kw)- Temperature Adjustment in Cold Months Store/Loading Room- Temperature Adjustment in Cold Months O Connor Gallery- Temperature Adjustment in Cold Months Split System (2.5kw)- Set Point Temperature Adjustment Split System (3kw)- Set Point Temperature Adjustment Split System (8kw)- Set Point Temperature Adjustment Link Span Cassette 10kw (Jo s Office)- Set Point Temperature Adjustment Link Span Cassette 10kw (O Conner Entry)- Set Point Temperature Adjustment Link Span Cassette 10kw (Jo s Office)- Switch off between 8pm-6am every day Link Span Cassette 10kw (O Conner Entry)- Switch off between 8pm-6am every day Down Stairs Office Entry Doors- Tint Doors to reduce heat transfer Jo s Office Windows Tint Windows to reduce heat and allow more natural light Downstairs Kitchen Room HWS Reduce time to 8hrs/day (9am-5pm) 8

10 4.1.1 Identified HVAC opportunity Main Hall (64kw)- Temperature Adjustment in Cold Months Alter Building Management System (BMS) to increase set point to 24 Degrees between 10pm- 3am during the cooler months. During the cooler months, there is less heat losses between inside and outside temperatures. Alter BMS programing to increase set point between 10pm-3am during the cooler months Every 1 degree increase from 21 degrees (up to 24), is saving of around 10% of Savings potential: Approximately 7,200 kwh, $ 1,292.65, 6.84 tco 2 p.a. Payback: Approximately 0.31 years Identified HVAC opportunity Entry/Hallway (30kw)- Temperature Adjustment in Cold Months Alter Building Management System (BMS) to increase set point to 24 Degrees between 10pm- 3am during the cooler months. During the cooler months, there is less heat losses between inside and outside temperatures. Alter BMS programing to increase set point between 10pm-3am during the cooler months Every 1 degree increase from 21 degrees (up to 24), is saving of around 10% of Savings potential: Approximately 3,375 kwh, $ , 3.21 tco 2 p.a. Payback: Approximately 0.66 years Identified HVAC opportunity Tower (25kw)- Temperature Adjustment in Cold Months Alter Building Management System (BMS) to increase set point to 24 Degrees between 10pm- 3am during the cooler months. During the cooler months, there is less heat losses between inside and outside temperatures. Alter BMS programing to increase set point between 10pm-3am during the cooler months Every 1 degree increase from 21 degrees (up to 24), is saving of around 10% of Savings potential: Approximately 2,813 kwh, $ , 2.67 tco 2 p.a. Payback: Approximately 0.79 years 9

11 4.1.4 Identified HVAC opportunity Store/Loading Room- Temperature Adjustment in Cold Months Alter Building Management System (BMS) to increase set point to 24 Degrees between 10pm- 3am during the cooler months. During the cooler months, there is less heat losses between inside and outside temperatures. Alter BMS programing to increase set point between 10pm-3am during the cooler months Every 1 degree increase from 21 degrees (up to 24), is saving of around 10% of Savings potential: Approximately 2,813 kwh, $ , 2.67 tco 2 p.a. Payback: Approximately 0.79 years Identified HVAC opportunity O Connor Gallery- Temperature Adjustment 10pm-3am in Cold Months Alter Building Management System (BMS) to increase set point to 24 Degrees between 10pm- 3am during the cooler months. During the cooler months, there is less heat losses between inside and outside temperatures. Alter BMS programing to increase set point between 10pm-3am during the cooler months Every 1 degree increase from 21 degrees (up to 24), is saving of around 10% of Savings potential: Approximately 2,250 kwh, $ , 2.14 tco 2 p.a. Payback: Approximately 0.99 years Identified HVAC opportunity Split System (2.5kw)- Set Point Temperature Adjustment Set default temperatures on split system to 24 Degrees Staff task- Set default temperature to 24 Degrees Office spaces don t require to be at 21 Degrees Every 1 degree increase from 21 degrees (up to 24), is saving of around 10% of Savings potential: Approximately 1,051 kwh, $ , 0.99 tco 2 p.a. Estimated capital cost: $0.00 (as GRC Staff can make the change) Payback: Approximately 0.00 years 10

12 4.1.7 Identified HVAC opportunity Split System (3kw)- Set Point Temperature Adjustment Set default temperatures on split system to 24 Degrees Staff task- Set default temperature to 24 Degrees Office spaces don t require to be at 21 Degrees Every 1 degree increase from 21 degrees (up to 24), is saving of around 10% of Savings potential: Approximately 1,226 kwh, $ , 1.16 tco 2 p.a. Estimated capital cost: $0.00 (as GRC Staff can make the change) Payback: Approximately 0.00 years Identified HVAC opportunity Split System (8kw)- Set Point Temperature Adjustment Set default temperatures on split system to 24 Degrees Staff task- Set default temperature to 24 Degrees Office spaces don t require to be at 21 Degrees Every 1 degree increase from 21 degrees (up to 24), is saving of around 10% of Savings potential: Approximately 2,920 kwh, $ , 2.77 tco 2 p.a. Estimated capital cost: $0.00 (as GRC Staff can make the change) Payback: Approximately 0.00 years Identified HVAC opportunity Link Span Cassette 10kw (Jo s Office)- Set Point Temperature Adjustment Alter Building Management System (BMS) to increase set point to 24 Degrees as it is walk ways. Alter BMS programing to increase set point Every 1 degree increase from 21 degrees (up to 24), is saving of around 10% of Savings potential: Approximately 3,942 kwh, $ , 3.75 tco 2 p.a. Payback: Approximately 0.57 years 11

13 Identified HVAC opportunity Link Span Cassette 10kw (O Conner Entry)- Set Point Temperature Adjustment Alter Building Management System (BMS) to increase set point to 24 Degrees as it is walk ways. Alter BMS programing to increase set point Every 1 degree increase from 21 degrees (up to 24), is saving of around 10% of Savings potential: Approximately 3,942 kwh, $ , 3.75 tco 2 p.a. Payback: Approximately 0.57 years Identified HVAC opportunity Link Span Cassette 10kw (Jo s Office)- Switch off between 8pm-6am every day Alter Building Management System (BMS) to switch off between 8pm-6am. After closing of the gallery, there is less heat losses between inside and outside temperatures due to less people traffic in the area. Alter BMS programing to shut off between 8pm-6am per day Every hour the air-conditioner is off, around 5kw electricity energy will be saved for non-occupied areas Savings potential: Approximately 9,855 kwh, $ 1,769.28, 9.36 tco 2 p.a. Payback: Approximately 0.23 years Identified HVAC opportunity Link Span Cassette 10kw (O Conner Entry)- Switch off between 8pm-6am every day Alter Building Management System (BMS) to switch off between 8pm-6am. After closing of the gallery, there is less heat losses between inside and outside temperatures due to less people traffic in the area. Alter BMS programing to shut off between 8pm-6am per day Every hour the air-conditioner is off, around 5kw electricity energy will be saved for non-occupied areas Savings potential: Approximately 9,855 kwh, $ 1,769.28, 9.36 tco 2 p.a. Payback: Approximately 0.23 years 12

14 Identified HVAC opportunity Down Stairs Office Entry Doors- Tint Doors to reduce heat transfer Tinting doors will reduce heat transfer through the glass and reduce the UV transfer into the space. Tint Sculpture Courtyard access door to Lunch room area Tint Sculpture Courtyard access door to Downstairs Office Tinting improves energy cooling efficiencies and reduces energy consumption Savings potential: Approximately 2,957 kwh, $ , 2.81 tco 2 p.a. Estimated capital cost: $ Payback: Approximately 1.53 years Identified HVAC opportunity Jo s Office Windows Tint Windows to reduce heat and allow more natural light Tinting doors will reduce heat transfer through the glass and reduce the UV transfer into the space. Currently Joanne has blinds fitted to reduce the glare and the sun light beaming into the room. If glass if fitted with darker tint, will allow more natural light through, lower glare and reduce the need to have lights on due to the blinds are fully down. Tint Windows to reduce heat and allow more natural light Tinting improves energy cooling efficiencies and reduces energy consumption Lower the need for lights to be on Savings potential: Approximately 2,957 kwh, $ , 2.81 tco 2 p.a. Estimated capital cost: $2, Payback: Approximately 4.14 years Identified HVAC opportunity Downstairs Kitchen Room HWS Reduce time to 8hrs/day (9am-5pm) Only have the hot water system on to suit site usage. Currently site only uses hot water for washing up during normal work hours. Alter Dynalite controller to suit operating hours (9am-5pm) Savings potential: Approximately 9,461 kwh, $ 1,698.55, 8.98 tco 2 p.a. Estimated capital cost: $ Payback: Approximately 0.18 years 13

15 SECTION 5: QUICK WINS & FURTHER SCOPE During the audit we have found other areas where energy efficiency can be improved. Some of them can be implemented just by doing best practice. Closing off areas that are untended to improver cooling efficiencies and cooling losses In periods where no touring arts are stored on site, shut down air-conditioning in storage areas SECTION 6: SUMMARY OF OPPORTUNITIES Based on the walkthrough audit, calculations and our assumptions, there is possibility to make a savings of approximately 12% on overall energy cost annually which equates to approximately $11, Total estimated implementation cost will be $6, with a payback period of approximately 0.58 years. Above Opportunities are listed below in table 5. 14

16 SECTION 7: ASSUMPTIONS Assumptions used in this Audit report are: The Blended electricity unit price is 18 c/kwh inc. GST. A factor of 1 kwh = GJ has been used to convert from kwh to GJ. For Electricity, GHG emission factor of 0.95 kg CO 2-e/kWh SECTION 8: GLOSSARY kw - Kilowatt: a measure of one thousand watts of electrical power GJ - Gigajoule: one thousand million joules GHG Green House Gas: a gas that contributes to the greenhouse effect by absorbing infrared radiation. Carbon dioxide and chlorofluorocarbons are examples of greenhouse gases. HVAC: Heating, Ventilating and Air-conditioning. It is the technology of indoor and vehicular environmental comfort. PF: Power Factor is the ratio of the actual electrical power dissipated by an AC circuit to the product of the r.m.s. values of current and voltage. The difference between the two is caused by reactance in the circuit and represents power that does no useful work. ROI: Return on investment is used to evaluate the efficiency of an investment or to compare the efficiency of a number of different investments. ROI measures the amount of return on an investment relative to the investment s cost. 15

17 Table 5: Summary of Energy Efficiency Opportunities Accuracy +/- 33% Description of Opportunity Group / Area Electricity savings (kwh) p.a. Gas savings GJ p.a. Electricity cost savings ($ p.a.) Total cost Other savings savings ($ p.a. (e.g. maint.) $ p.a. ex. GST) Capital cost $ (ex GST) Simple Payback period (years) GHG savings tonnes CO2 p.a. Energy savings as % of total site consumption Accuracy of estimate (+/-%) FORMULA FORMULA FORMULA FORMULA FORMULA 64kw A/C 10pm-3am Temp Adj in Cold Mths Main Hall % 40% 30kw A/C 10pm-3am Temp Adj in Cold Mths Entry/Hallway % 40% 25kw A/C 10pm-3am Temp Adj in Cold Mths Tower % 40% 25kw A/C 10pm-3am Temp Adj in Cold Mths Store/Loading Room % 40% 20kw A/C 10pm-3am Temp Adj in Cold Mths O'Connor Gallery % 40% 2.5kw Split AC Temp Adj as in office spaces % 20% 3kw Split AC Temp Adj as in office spaces % 20% 8kw Split AC Temp Adj as in office spaces % 20% 10kw Cassette Unit - Temp Adj Jo's Office/Hallway % 40% 10kw Cassette Unit - Temp Adj O'Connor Gallery Entry % 40% 10kw Cassette Unit - Switch off 8pm-6am Jo's Office/Hallway % 20% 10kw Cassette Unit - Switch off 8pm-6am O'Connor Gallery Entry % 20% HWS- Reduce time to 8hrs/day 9am-5pm Downstairs Kitchen % 30% Tint Entry Doors x 2 Downstairs Office Entries % 40% Tint Office Windows Jo's Office/Hallway % 40% % % % % % Sum % 33%