Slade Green Phase 4, Block M, Erith, DA8 2JW 'Shell & Core'

Transcription

1 Part La Compliance Report Slade Green Phase 4, Block M, Erith, DA8 JW 'Shell & Core' Stroma Reference: S1 Date: 17/5/17 Prepared for: Redrow Homes South East 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 1

2 Contents 1. SUMMARY RESULTS CRITERION 1 ACHIEVING THE BER CRITERION LIMITS ON DESIGN FLEXIBILITY CRITERION 3 LIMITING THE EFFECTS OF SOLAR GAIN IN SUMMER EPC ASSET RATING BUILDING REGULATIONS SUMMARY MODEL GEOMETRY THERMAL ENVELOPE MECHANICAL AND ELECTRICAL SERVICES HEATING, COOLING AND VENTILATION MECHANICAL VENTILATION INTERNAL LIGHTING BMS AND POWER FACTOR CORRECTION RENEWABLE ENERGY TECHNOLOGY Appendix A. Model Input Parameters Appendix B. BRUKL Output Document Appendix C. Preliminary EPC Appendix D. As-Built Requirements STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ

3 1. Summary Building Regulations: Part La: 1 (Eng&Wales) Assessment Methodology: Level 5 DSM Software: IES-VE v17 Prepared by Checked by Angelos Kokkalis BSc MSc Richard de Fleury BEng (hons) MSc Trainee Assessor Principal Sustainability Consultant Date: 17/5/17 Date: 17/5/17 File reference: S1 Version Status Date Change Summary S1 First Issue 17/5/17 - Registered office as above. Company reg. no STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 3

4 . Results.1. Criterion 1 Achieving the BER Results show the shell & core development has the potential to comply with the requirements of ADLa Criterion 1; the Building Emission Rate is less than the Target Emission Rate. Building area or, part Notional Emissions Rate 41.1 Target Emissions Rate (TER) 41.1 Building Emissions Rate (BER) 4 Retail Unit Compliance margin.75 % Pass/Fail Table 1. Criterion 1 summary PASS kg.co /m /yr As-designed Part L documentation is required by Building Control to confirm that the proposed design meets the requirements of Approved Document Part L prior to construction. Upon building completion or the first fit-out, the Part L calculation must be revised to represent the as-built and as-installed specification. Please refer to the appendix of this report for details of the as-built evidence requirements... Criterion Limits on Design Flexibility Design limits are outlined within Approved Document Part La and Non-domestic Building Services Compliance Guide. The appended BRUKL document outlines the building performance against each of the respective design limits. No parameters exceed the recommended design limits;.3. Criterion 3 Limiting the Effects of Solar Gain in Summer The cumulative solar gain for all applicable zones has been calculated and compared against the recommended limits. The appended BRUKL document outlines all results. All applicable zones comply with the requirements of Criterion STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 4

5 .4. EPC Asset Rating A preliminary EPC has been produced at this stage based upon the details outlined within this report. Metric Asset Rating 34 Band Table. EPC result Result B Upon practical completion, a final EPC must be produced representing the as-built and as-installed specification and lodged onto the central Landmark register. EPCs must be generated within the most recently Government approved software version irrespective of the version used for the Part L compliance assessment. Therefore, Stroma Technology cannot be held responsible for any variations within the EPC rating as a result of specification, software or, regulatory changes. 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 5

6 3. Building Regulations Summary Part La: 1 (England & Wales) Approved Document Part La: 1 came into force on 1 st October, superseding the former Part La: 6. The 1 Part L largely follows the same methodology as before with a number of key changes intended to reduce energy consumption and promote a more holistic design approach. This assessment considers the first 3 of 5 criteria, the key objectives of which are unchanged. Criterion 1 achieving the BER Compliance is demonstrated where the Building Emission Rate (BER) is less than the Target Emission Rate (TER). Carbon Dioxide emissions of the building are calculated using Government approved software encompassing the Architectural form, fabric and building services specifications. Unlike 6, the TER is derived directly from the Notional building enabling a direct comparison between a compliant and the actual specification. Criterion limits on design flexibility In order to guide the building specification towards higher levels of energy efficiency and in recognition of technical development, the minimum performance limits for building services have been improved. These are all set out within the 1 Non-Domestic Building Services Compliance Guide. Backstop or, limiting U-values for building fabric and air permeability remain largely unchanged from 6. Criterion 3 limiting the effects of solar gain in summer Criterion 3 now considers the cumulative solar gain only, for all occupied or mechanically cooled spaces. The objective is to steer design towards a reduction for the need or, the installed capacity of air conditioning systems. In order to demonstrate compliance, the solar gain aggregated over the period April to September must not exceed a limit derived for a room of the same size with a pre-defined area of glazing and glass specification. The respective solar gain limit is dependent upon whether the room type is considered top lit or side lit. This development has been assessed by trained and accredited Energy Assessors using Government approved compliance software by Integrated Environmental Solutions (IES). This report details the basis of modelling and a summary of the results, including the BRUKL document included as an appendix. Energy Performance Certificates must always be generated using the most up to date software version, in accordance with European legislation. Therefore, Stroma Technology cannot be held responsible for any change in result owning to building specification, legislative or software revisions. 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 6

7 4. Model Geometry Architectural drawings have been provided by Redrow. Drawing type Drawing by Drawing reference Revision Ground Floor Plan E83M - 1 First Floor Plan E83M - A Second Floor Plan E83M - 3 A Roof Plan E83M - 83 A Section 1 E83M - 31 A Section E83M 3 B Redrow Section 3 E83M - 33 B Section 4 E83M 34 B Elevation 1 E83M Elevation E83M - 4 B Elevation 3 E83M - 43 A Elevation 4 E83M - 44 B Table 3. Drawings used for model D Figure 1. IES thermal model South East and North East elevation Pink indicates adjacent apartments 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 7

8 Figure. IES thermal model South West and North West elevation Pink indicates adjacent apartments 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 8

9 5. Thermal Envelope Construction information has been provided by Matthew Jack of Redrow. Opaque element Construction (type and insulation) U-value (W/m.K) Metal Cladding Assumption Ground Floor London Clay, Cavity, Cast Concrete, Insulation, Screed.18 NO Exposed Ceiling to cold roof Plasterboard, Cavity, Insulation.14 NO External Wall Brickwork, Cavity, Insulation, Concrete Block, Cavity, Cement.8 NO bonded particle board Personnel doors Oak. NO Table 4. Opaque building elements Thermal bridging has been accounted for in accordance with the approved dynamic simulation modelling procedure. Translucent element Construction type Overall U-value (W/m.K) Solar g-value Light trans. Assumption Windows Double glazing Glazed doors Double glazing Table 5. Transparent building elements Air permeability (m 3 5 Pa) Table 6. Air infiltration Tested by Date of test Assumption 5 N/A N/A 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 9

10 Ventilation Cooling Heating 6. Mechanical and Electrical Services 6.1. Heating, Cooling and Ventilation The mechanical performance specification and relevant drawings were assumed System reference: 1 VRF + MV System Areas served: Retail Unit Type: Split or multi-split system Source: Heat pump (electric): air source Fuel: Grid supplied electricity ECA N/A Seasonal efficiency: 3 Heating circulator pump: N/A Source: Heat pump (electric) ECA N/A Seasonal efficiency (SEER): 3.5 Nominal Efficiency (EER): 3 Central AHU SFP: 1.6 W/l/s AHU CEN leakage class: Untested - Use default Ductwork leakage class: Untested - Use default Heat recovery type: Cross plate Heat recovery effectiveness:.7 Provision for energy metering: Yes Alarms for out-ofrange values: No Table 7. HVAC system parameters System reference: Areas served: Type: DHW Retail Unit Instantaneous hot water only Efficiency: 1 Fuel: Grid supplied electricity Storage insulation or Storage volume: N/A N/A losses: Secondary circulation: No Loop length (m): N/A Losses (W/m): N/A Pump Power (kw): N/A Table 8. DHW system parameters All assumptions (in red) must be reviewed by the design team and confirmed to Stroma Tech. Variations made to the input parameters are likely to change the overall Building Emissions Rate and therefore may lead to non-compliance. 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 1

11 6.. Mechanical Ventilation Mechanical ventilation details have assumed and applied to the thermal model accordingly. Specific Fan Powers (SFPs) are reported within the appended BRUKL output document against the limiting value for each fan category. Detail Source Assumption Fan types Supply/Extract MVHR Unit Specific Fan Power 1.6 W/l/s Extract Flow Rate - Table 9. Mechanical ventilation data source All assumptions must be reviewed by the design team and confirmed to Stroma Technology. Variations made to the input parameters are likely to change the overall Building Emissions Rate and therefore may lead to non-compliance. 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 11

12 6.3. Internal Lighting Internal fixed lighting details have been assumed and applied to the thermal model accordingly. Principal information format: Luminaire specification - No calculations carried out Detail Information Source Assumption Luminaire Type/Performance Assumed Please refer to Appendix A Presence detection None Assumed Daylight control None Assumed Sensor parasitic power None Assumed Table 1. Internal lighting details All assumptions must be reviewed by the design team and confirmed to Stroma Technology. Variations made to the input parameters are likely to change the overall Building Emissions Rate and therefore may lead to non-compliance. Model input parameters are tabulated within Appendix A of this report. 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 1

13 6.4. BMS and Power Factor Correction A BMS facilty will not be installed with the capacity for AMT and alarms for out-of-range values. A Power Factor Correction device will not or, has not been installed. Therefore, the default Factor of <.9 has been applied. Evidence of both the BMS functionality and achieved Power Factor will be required at as-built stage. 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 13

14 7. Renewable Energy Technology No renewable energy technologies have been incorporated into this development. 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 14

15 Appendix A. Model Input Parameters 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 15

16 Room Name Lamp Efficacy (lm/w) LOR Design Illuminance (lux) Display Lighting Uses Efficient Lamps? Lamp Efficacy (lm) Lighting and Controls Display Lighting Time Switching? Daylight Control Control Type Sensor Type Sensor Timeswitch Sensor Parasitic Power (W/m²) Occupancy Sensing Sensor Parasitic Power (W/m²) Sensor Timeswitch System Heating / Cooling / Vent System Supply Specific Fan Power (W/(l/s)) Extract Flow Rate (l/s) Specific Fan Power (W/(l/s)) Mechanical Ventilation Is fan remote from room? Heat Recovery Type Heat Recovery Seasonal Efficiency Retail Unit Yes 3 No No NONE VRF + MV System Yes 1.6 No Plate Heat Exchanger.7

17 Appendix B. BRUKL Output Document 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 16

18 BRUKL Output Document Compliance with England and Wales Building Regulations Part L 1 Project name Block M Retail Unit Shell and Core As designed Date: Wed May 17 1:34:59 17 Administrative information Building Details Address: 8 - Slade Green Phase 4, Erith, DA8 JW Certification tool Calculation engine: Apache Calculation engine version: Interface to calculation engine: IES Virtual Environment Interface to calculation engine version: BRUKL compliance check version: v4.1.g. Owner Details Name: - Telephone number: - Address: -, -, - Certifier details Name: Ian Andrews Telephone number: Address: Stroma Tech 6 Silkwood Business Park Fryers Way, Wakefield, WF5 9TJ Criterion 1: The calculated CO emission rate for the building should not exceed the target 1.1 CO emission rate from the notional building, kgco /m.annum Target CO emission rate (TER), kgco /m.annum Building CO emission rate (BER), kgco /m.annum Are emissions from the building less than or equal to the target? BER =< TER 1.5 Are as built details the same as used in the BER calculations? Separate submission Criterion : The performance of the building fabric and the building services should achieve reasonable overall standards of energy efficiency.a Building fabric Element Ua-Limit Ua-Calc Ui-Calc Surface where the maximum value occurs* Wall** RT1:Surf[1] Floor RT1:Surf[] Roof RT8:Surf[11] Windows***, roof windows, and rooflights RT1:Surf[] Personnel doors... RT1:Surf[1] Vehicle access & similar large doors No Vehicle access doors in building High usage entrance doors No High usage entrance doors in building U a-limit = Limiting area-weighted average U-values [W/(m K)] U a-calc = Calculated area-weighted average U-values [W/(m K)] U i-calc = Calculated maximum individual element U-values [W/(m K)] * There might be more than one surface where the maximum U-value occurs. ** Automatic U-value check by the tool does not apply to curtain walls whose limiting standard is similar to that for windows. *** Display windows and similar glazing are excluded from the U-value check. N.B.: Neither roof ventilators (inc. smoke vents) nor swimming pool basins are modelled or checked against the limiting standards by the tool. Air Permeability Worst acceptable standard This building 3 m /(h.m ) at 5 Pa 1 5 Page 1 of 5

19 .b Building services The building services parameters listed below are expected to be checked by the BCO against guidance. No automatic checking is performed by the tool. Whole building lighting automatic monitoring & targeting with alarms for out-of-range values Whole building electric power factor achieved by power factor correction < VRF + MV Sytem Heating seasonal efficiency Cooling nominal efficiency SFP [W/(l/s)] HR seasonal efficiency Automatic monitoring & targeting with alarms for out-of-range values for this HVAC system 1- DHW Heating seasonal efficiency 1 - Local mechanical ventilation and exhaust Hot water storage loss factor [kwh/litre per day] Zone Supply/extract SFP [W/(l/s)] HR seasonal efficiency Exhaust SFP [W/(l/s)] RETAIL UNIT NO NO Shell and core configuration Zone RETAIL UNIT Assumed shell? NO General lighting and display lighting Zone General lighting [W] Display lamps efficacy [lm/w] RETAIL UNIT 71 3 Criterion 3: The spaces in the building should have appropriate passive control measures to limit solar gains Zone Solar gain limit exceeded? (%) Internal blinds used? RETAIL UNIT NO (-64%) NO Criterion 4: The performance of the building, as built, should be consistent with the BER Separate submission Criterion 5: The necessary provisions for enabling energy-efficient operation of the building should be in place Separate submission EPBD (Recast): Consideration of alternative energy systems Were alternative energy systems considered and analysed as part of the design process? Is evidence of such assessment available as a separate submission? Are any such measures included in the proposed design? NO NO NO Page of 5

20 Technical Data Sheet (Actual vs. Notional Building) Building Global Parameters Actual Area [m ] 46. External area [m ] Weather LON 3 Infiltration [m 5Pa] 5 Average conductance [W/K] Average U-value [W/m K].77 Alpha value* [%] 4.74 Notional LON * Percentage of the building's average heat transfer coefficient which is due to thermal bridging Building Use % Area Building Type 1 A1/A Retail/Financial and Professional services A3/A4/A5 Restaurants and Cafes/Drinking Est./Takeaways B1 Offices and Workshop businesses B to B7 General Industrial and Special Industrial Groups B8 Storage or Distribution C1 Hotels C Residential Inst.: Hospitals and Care Homes C Residential Inst.: Residential schools C Residential Inst.: Universities and colleges CA Secure Residential Inst. Residential spaces D1 Non-residential Inst.: Community/Day Centre D1 Non-residential Inst.: Libraries, Museums, and Galleries D1 Non-residential Inst.: Education D1 Non-residential Inst.: Primary Health Care Building D1 Non-residential Inst.: Crown and County Courts D General Assembly and Leisure, Night Clubs and Theatres Others: Passenger terminals Others: Emergency services Others: Miscellaneous 4hr activities Others: Car Parks 4 hrs Others - Stand alone utility block Energy Consumption by End Use [kwh/m ] Heating Cooling Auxiliary Lighting Hot water Equipment* TOTAL** Actual Notional * Energy used by equipment does not count towards the total for calculating emissions. ** Total is net of any electrical energy displaced by CHP generators, if applicable. Energy Production by Technology [kwh/m ] Photovoltaic systems Wind turbines CHP generators Solar thermal systems Actual Notional Energy & CO Emissions Summary Heating + cooling demand [MJ/m ] Primary energy* [kwh/m ] Total emissions [kg/m ] Actual Indicative Target * Primary energy is net of any electrical energy displaced by CHP generators, if applicable. Page 3 of 5

21 HVAC Systems Performance System Type Heat dem Cool dem Heat con Cool con Aux con Heat Cool Heat gen Cool gen MJ/m MJ/m kwh/m kwh/m kwh/m SSEEF SSEER SEFF SEER [ST] Split or multi-split system, [HS] Heat pump (electric): air source, [HFT] Electricity, [CFT] Electricity Actual Notional [ST] No Heating or Cooling Actual Notional Key to terms Heat dem [MJ/m] Cool dem [MJ/m] Heat con [kwh/m] Cool con [kwh/m] Aux con [kwh/m] Heat SSEFF Cool SSEER Heat gen SSEFF Cool gen SSEER ST HS HFT CFT = Heating energy demand = Cooling energy demand = Heating energy consumption = Cooling energy consumption = Auxiliary energy consumption = Heating system seasonal efficiency (for notional building, value depends on activity glazing class) = Cooling system seasonal energy efficiency ratio = Heating generator seasonal efficiency = Cooling generator seasonal energy efficiency ratio = System type = Heat source = Heating fuel type = Cooling fuel type Page 4 of 5

22 Key Features The BCO can give particular attention to items with specifications that are better than typically expected. Building fabric Element Ui-Typ Ui-Min Surface where the minimum value occurs* Wall.3. RT1:Surf[31] Floor..18 RT1:Surf[] Roof RT1:Surf[5] Windows, roof windows, and rooflights RT1:Surf[] Personnel doors 1.5. RT1:Surf[6] Vehicle access & similar large doors No Vehicle access doors in building High usage entrance doors No High usage entrance doors in building U i-typ = Typical individual element U-values [W/(m K)] U i-min = Minimum individual element U-values [W/(m K)] * There might be more than one surface where the minimum U-value occurs. Air Permeability Typical value This building 3 m /(h.m ) at 5 Pa 5 5 Page 5 of 5

23 Appendix C. Preliminary EPC The following EPC is based upon information outlined within this report. A final EPC cannot be generated until the as-built and as-installed information relating to the constructed development or, first fit-out is available. 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 17

24 1 SK Energy Performance Certificate Non-Domestic Building This certificate has been produced by E P C g e n, a software module developed by B R E for C L G under contract with F M. The author of the program is J o s e O r t i z (o r t i z b r e. c o. u k ). Some security features proves the authenticity of this document. 8 - Slade Green Phase 4 Slade Green Road Address 3 Address 4 Erith DA8 JW Energy Performance Asset Rating More energy efficient A+ A -5 B 6-5 C D 76-1 E F G Over 15 Less energy efficient Net zero CO emissions 34 Certificate Reference Number: This certificate shows the energy rating of this building. It indicates the energy efficiency of the building fabric and the heating, ventilation, cooling and lighting systems. The rating is compared to two benchmarks for this type of building: one appropriate for new buildings and one appropriate for existing buildings. There is more advice on how to interpret this information in the guidance document Energy Performance Certificates for the construction, sale and let of non-dwellings available on the Government's website at S K D C L G x E P C g e n 8 ONLY FOR This is how energy efficient the building is. ILLUSTRATION Technical information Benchmarks Main heating fuel: Grid Supplied Electricity Building environment: Air Conditioning Total useful floor area (m ): 46.4 Building complexity (NOS level): 5 Building emission rate (kgco /m per year): Primary energy use (kwh/m per year): 76.6 Buildings similar to this one could have ratings as follows: 59 If newly built If typical of the existing stock

25 1 35 Administrative information This is an Energy Performance Certificate as defined in the Energy Performance of Buildings Regulations 1 as amended Assessment Software: Property Reference: Assessor Name: Assessor Number: Accreditation Scheme: Employer/Trading Name: Employer/Trading Address: Issue Date: Valid Until: Related Party Disclosure: Recommendations for improving the energy performance of the building are contained in the associated Recommendation Report: About this document and the data in it Virtual Environment v7..7 using calculation engine ApacheSim v7..7 Ian Andrews LCEA CIBSE Certification Limited Stroma Technology 6 Silkwood Business Park, Fryers Way, Wakefield 17 May May 7 (unless superseded by a later certificate) Not related to the owner This document has been produced following an energy assessment undertaken by a qualified Energy Assessor, accredited by CIBSE Certification Limited. You can obtain contact details of the Accreditation Scheme at A copy of this certificate has been lodged on a national register as a requirement under the Energy Performance of Buildings Regulations 1 as amended. It will be made available via the online search function at The certificate (including the building address) and other data about the building collected during the energy assessment but not shown on the certificate, for instance heating system data, will be made publicly available at ONLY FOR This certificate and other data about the building may be shared with other bodies (including government departments and enforcement agencies) for research, statistical and enforcement purposes. For further information about how data about the property are used, please visit To opt out of having information about your building made publicly available, please visit There is more information in the guidance document Energy Performance Certificates for the construction, sale and let of non-dwellings available on the Government website at: It explains the content and use of this document and advises on how to identify the authenticity of a certificate and how to make a complaint. Opportunity to benefit from a Green Deal on this property ILLUSTRATION The Green Deal can help you cut your energy bills by making energy efficiency improvements at no upfront costs. Use the Green Deal to find trusted advisors who will come to your property, recommend measures that are right for you and help you access a range of accredited installers. Responsibility for repayments stays with the property - whoever pays the energy bills benefits so they are responsible for the payments. To find out how you could use Green Deal finance to improve your property please call

26 Appendix D. As-Built Requirements Prior to the production of as-built Part L documentation and the final Energy Performance Certificate, the following information is required by the Assessor. 1. As-built drawings. Air permeability test report or certificate 3. MCS certificate for any renewable energy technology 4. Statement from the developer, or equivalent person who is working for the client who is in a position to provide a professional judgement, that the building has been constructed (services, fabric U-value and glazing g-value etc.) in line with the details provided. Please copy the below text onto your company letter head, complete details and return to the Energy Assessor. A copy of the statement can be provided in a Word document by Stroma Tech at client request. Developer Statement Dear Assessor, Re: Slade Green Phase 4, Block M, Erith, DA8 JW In regards to As-Built Part L and EPC documentation, please find herewith confirmation of variations between the as-built specification and that outlined within your report reference: S1: Element Thermal envelope Heating service Cooling service Domestic hot water service Mechanical ventilation Internal lighting BMS and PFC Variations Please provide details or write none Please provide details or write none Please provide details or write none Please provide details or write none Please provide details or write none Please provide details or write none Please provide details or write none Renewable technology Please provide details or write none I hereby confirm that all information given is accurate to the best of my knowledge and understand that subsequent changes to Part L or EPC documentation will be at my cost. Signature: Position: Name: Date: 17 STROMA Stroma Tech, Unit 6, Silkwood Business Park, Fryers Way, Wakefield, WF5 9TJ 18