Buildings Energy Efficiency & Energy Audit Ir Eagle Mo

Transcription

1 Buildings Energy Efficiency & Energy Audit Ir Eagle Mo Telemax Environmental and Energy Management Limited

2 Contents 1) Introduction 2) History of HK Energy Audit 3) Energy Audit in Other Contraries 4) Energy Audit Code (EAC) 5) Case Study Telemax Environmental and Energy Management Limited

3 1) Introduction Telemax Environmental and Energy Management Limited

4 What Are Energy Audits? An energy audit is a survey and analysis of energy consumptions for processes/systems, so that to reduce the amount of energy input into the processes/systems without negatively affecting the output(s). There are many types of energy audits that can be performed ranging from general 'walk-through audits' to more comprehensive 'process audits.

5 Inputs a) Energy: Electrical, Water, Town gas, Natural gas, LPG, other energy sources. b) Operation: Operation procedures, schedule equipment settings, control sequence.

6 Outputs (Indoor Environmental Qualities) a) Acoustics: sound level b) IAQ: CO 2, CO, radon, formaldehyde, etc c) Lighting output: Lux level, Glare d) Thermal Comfort: Temperature, RH, air movement

7 Objectives Assess the energy efficiency performance Assess the equipment conditions and system operation performance Review the indoor environmental quality Both the input side and output side should be considered Energy management measures BSE542 Energy Efficient Buildings

8 2) History of HK Energy Audit Telemax Environmental and Energy Management Limited

9 Enhancement of Energy Efficiency in Buildings Energy Consumption by Sectors in 2009 Hong Kong Energy End-use Data 2011 Total annual electricity consumption of HK in 2009: about 41.5 billion kwh (equivalent to the consumption by 9 millions of families annually) About 90% of the electricity consumed by buildings Enhancement of buildings energy efficiency will be an effective means to reduce energy consumption

10 The Hong Kong Energy Efficiency Registration Scheme for Buildings (HKEERSB) Launched since 1998 to promote the voluntary compliance with BEC to enhance building energy efficiency Up to Dec 2011, around 1,300 buildings have been registered Registered buildings included commercial, industrial and residential buildings Participation rate of the private sector is very low (only around 30% of the registered buildings)

11 Mandatory Implementation of Building Energy Code (BEC) As voluntary compliance with a higher energy efficiency standard appears not to be forthcoming in Hong Kong and amidst the growing environmental concerns, Government consider it an opportune time to pursue mandatory implantation of the BECs to accompany market In order to combat climate change, mandatory implementation of minimum energy efficiency standard in buildings by legislation has been widely adopted by overseas and Mainland China driven changes The mandatory BEC is formulated with the existing voluntary BEC 2007 Edition as the blueprint

12 Milestone of the Buildings Energy Efficiency Ordinance (BEEO) 21/03/2011 Registration of Registered Energy Assessors (REA) came into operation 11/ / / / / / / / / / / / / /12/2010 BEEO was gazetted 21/09/2012 BEEO will come into full operation

13 Structure of Legislative Framework Buildings Energy Efficiency Ordinance (BEEO) Buildings Energy Efficiency (Fees) Regulation Buildings Energy Efficiency (Registered Energy Assessors) Regulation Energy Audit Code (EAC) Building Energy Code (BEC) Code of Practice

14 Control Regimes 1) Newly constructed buildings will be required to comply with the minimum energy efficiency standards and requirements as specified in BEC under BEEO 2) Existing buildings will be required to comply with BEC only when major retrofitting works are carried out 3) Commercial buildings and commercial portions of composite buildings will be required to carry out energy audits in accordance with the technical requirements as specified in EAC under BEEO

15 Control Regimes (cont d) Different regulatory mechanisms for newly constructed building after the commencement of the legislation and existing building before the commencement of the legislation Newly constructed building after the commencement of the legislation Buildings having obtained the consent to the commencement of building works for superstructure construction from Building Authority after the legislation comes into full operation (i.e. 21 Sep 2012) Existing building before the commencement of the legislation Buildings that have obtained the consent on or before the legislation comes into full operation (i.e. 21 Sep 2012) *Remarks: The abov e two terms are for publicity purpose only and do not appear in BEEO.

16 Energy Audit Only applicable to central BS installations of commercial buildings and commercial portions of composite buildings The owner of a building is required to engage a REA to conduct Energy Audit every 10 years The owner is required to obtain an Energy Audit Form and an energy audit report from the REA The REA is required to submit a copy of Energy Audit Form and the energy audit report to EMSD for record The owner is required to exhibit the valid Energy Audit Form in a conspicuous position at the main entrance of the building

17 3) Energy Audit in Other Contraries Telemax Environmental and Energy Management Limited

18 Energy Audit in US The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) refers to benchmarking as a preliminary energy use analysis; this process involves collecting facility energy data, reviewing energy bills, and comparing the facility's energy consumption with similarly-sized facilities using similar processes. EPA s Energy Star's Portfolio Manager is a free, on-line benchmarking tool. EPA recommends all facilities use Portfolio Manager or another benchmarking tool prior to completing a walk-through or detailed process audit.

19 Energy Audit in US ASHRAE Level 1 (Walk-through audits) - provide a first cut assessment of energy savings; - valuable to small utilities with simple production and distribution systems, and facilities that have never received an energy audit. - reliably include relatively simple and immediately affordable recommendations e.g. changes in operation timing and upgrades to lighting, heating, ventilating and air conditioning (HVAC), and pumping equipment. - a number of entitles have provided Do It Yourself guidance to assist facilities in conducting their own walk-through audits.

20 Energy Audit in US ASHRAE Level 2 (Detailed process audits ) - require a more in-depth conversation by professional auditors - experienced in water and wastewater systems - for mid-size and large facilities that lack in-house time to investigate energy efficiency opportunities, and that have not recently received an energy audit - involve equipment field tests, equipment energy performance data, creating energy profiles for equipment and systems, discussing potential O&M changes, and evaluating potential energy efficiency and renewable energy projects. - provide comprehensive information on the pay-back periods associated with the recommended measures.

21 3) Energy Audit Code (EAC) Code of Practice for Building Energy Audit Telemax Environmental and Energy Management Limited

22 Briefing on Energy Audit 22 SCHEDULE OF THE FIRST ENERGY AUDIT: Date of issue of occupation approval in respect of the building On or after 1 January 1988 After 1 January 1978 but before 1 January 1988 After 31 December 1969 but before 31 December 1977 On or before 31 December 1969 Period within which the first energy audit must be carried out 12 months from the commencement of Ordinance (21 Sept 2013) 24 months from the commencement of Ordinance (21 Sept 2014) 36 months from the commencement of Ordinance (21 Sept 2015) 48 months from the commencement of Ordinance (21 Sept 2016)

23 Scope 23 - Energy audit carried out for the central building services installations. 4 Key types of central building services installations i) Air-conditioning installation ii) Electrical installation iii) Lighting installation iv) Lift and Escalator installation

24 EAC Requirements Key Steps 1. Collection of information 2. Review of energy 3. Identification of EMO 4. Cost benefit analysis of EMO 5. Recommendations 6. Compiling energy audit report

25 Scope 25 - Step 1: Data Collection and Review Information on building operation & technical characteristic of various energy consumption were collected. Equipment type Quantity Power consumption Running schedule

26 Scope 26 - Step 1: Data Collection and Review (cont ) General Building Plan Occupancy Permit GFA of the building Retail Area

27 Scope - Step 1: Data Collection and Review (cont ) Owner of building Owner of Building Company: Address: Tel: Fax: Representative of Owner of Building Company: Contact Person: (Eng) (Chinese) Position in the company: Address: Tel: Fax:

28 Scope 28 - Step 2: Review of Energy The monthly and annual energy consumption of the building will be calculated Site survey will be conducted with E&M plant operators and engineers. - Confirm the equipment type - Confirm the equipment quantity - Confirm the equipment power consumption

29 Scope 29 Step 3: Identification of EMO Example: Replacing existing inefficient electrical equipment Replacing lower COP chillers Install occupancy sensors

30 Scope 30 - Step 4: Cost benefit analysis of EMO - Cost benefit and payback period will be provided if major BS equipment are being recommended to replace.

31 Scope 31 - Step 5: Recommendation Recommendation for the energy improvement work in the next few years will be provided to the owner for their consideration.

32 Scope 32 - Step 6: Compiling Energy Audit Report Energy audit report include: building information, findings, scope of audit, description of operating characteristics, recommendations and EMO. Appendix (calculation summary)

33 EAC Requirements Energy audit report Energy utilization index (EUI) (MJ/m/annum) Energy audit form (exhibit at building main entrance) Energy management opportunities (EMO) Implementation not mandatory

34 4) Case Study Telemax Environmental and Energy Management Limited

35 Energy Audit Example Chiller System Identify Energy Consumption and its Efficiency AHU / PAU System

36 Energy Audit Example 2 Lighting System Identification Electrical System

37 Elevation System Identify Power and Efficiency Energy Audit Example 3

38 Required information - Energy Bills Energy Bill in Excel format for 36 months

39 Required information Equipment Schedule (1) Equipment schedule with type, quantity, rating and power consumption

40 Required information Equipment Schedule (2) MVAC Chillers, chiller pump, AHU/PAU, FCU, exhaust fan Lighting Schedule Lift and Escalator

41 Required information - Operation Schedule MVAC equipment Lift and Escalator Lighting

42 Required information - Site Layout Layout in PDF or CAD format with dimension GBP

43 Required information -Administrative Information (1) GFA of the building Retail Area

44 Required information -Administrative Information (2) Occupancy Permit

45 END My Contact eaglemo@telemaxeem.com Tel :