User guide to Dbuild - energirigtigtbyggeri.dk
Contents
1. If the user wants an exact area of windows in one or more directions simply mark the check box Lock next to the direction Max shading factor The user can define the maximum shading factor if desired The value of the shading factor is relative to the window which is shaded For example a shading factor of 0 3 corresponds to light curtains if the glazing is an ordinary two layer glazing For other glazings the shading factor must be corrected The default factor is 0 3 where a factor 1 is no shading 11 1 USER GUIDE TO DBUILD Button Database When the button Database is pressed the windows database appears ferens Reference Reference Reference Reference Reference Reference Reference TET HE Orientation of the house in degres from north O or N 45 or NWJNE U value Costs Wimzk kr tim Reference frame 2 290 i Rationel 1 430 300 45N 12 4 12 SN4 Passivhausramme 0 740 2932 In this dialogue the user defines the windows in the building It 1s recommended to read the design guide that comes with the program NB In Danish only before it is decided which windows to use In the main part of the dialogue the user should choose The orientation of the house from north as either 0 or 45 Following the user has to define the windows in each direction of the house In the main list there are four reference windows that cannot be changed except the costs The calculati2. pressing the button Glazing and frames to the right e Frame the user can either select an existing frame from the default database in the Frame drop down menu or generate new frames by pressing the but ton Glazing and frames to the right e U value Dbuild automatically calculates the U value of the window com bined by the user e Costs the user fills in the costs of the window in kr m NB Remember to fill in the cost of your reference window as well Button Glazing and frames The user can generate new glazing units and frames by pressing the button Glazing and frames to the right of the Window database To generate a new glazing unit the user has to apply the following parameters Description user s own name for the glazing unit U value the center U value of the window W mK Solar transmittance the g value of the glazing unit Line loss the V value of the spacer in the glazing W mK NB remember to press Add to finally add the glazing unit If you change some information about the glazing unit remember to press Update To generate a new frame the user has to apply the following parameters e Description user s own name for the glazing unit 13 1 USER GUIDE TO DBUILD e Glazing part factor 0 1 that indicates how much frame there is in the com bines window A high factor indicates a slim frame and a lower factor indi cates e g a Dannebrog Window with a lot of frame
3. area filled in by the user in the tab General e Persons W m the effect coming from the persons occupying the building Default and fixed value of 3 5 W m in Dbuild which corresponds to the mi nimum value in Be05 2005 e Equipment W m the effect coming from electrical equipment Default and fixed value in Dbuild of 1 5 W m which corresponds to the minimum value in Be05 2005 e Equipment night W m Feature not available in Dbuild version 1 0 e Sum W m The sum of internal loads Persons and Equipment 18 1 USER GUIDE TO DBUILD 1 8 Heating system amp hot water D build 1 0 General Constructions Windows Ventilation Internalload Heating system amp hot water Other measures Costs amp service Circulation pump pump K boiler F district heat E electical power V heat v Include pump Heating supply F Reference pump Grundfos Alpha 15 60 Max Min Hot water cons 250 liters yvear per mz floor area Power Constant operation during heating season noii Indude tank Iv Include pump in optimization Type Biral 45 5 Maks Min m Power 5 Ea Vi Heated zone 0 Outdaors 1 0 Calculate oO Exit Heating system The user can select the type of heating system K is boiler gas or oil F is district heat E 1s electricity V is a heat pump The buttons Boiler advanced and Exch advanced exchanger in a
4. columns are the design values e Shading factor the shading factor of the corresponding window orientations The user columns are the design values Furthermore the tab Result 2 contains e Data of optimized windows e Data of ventilation natural and balanced mechanical e Calculation of net present value according to section Fejl Henvisningskilde ikke fundet in del A 25 APPENDIKS FEJL INGEN TEKST MED DEN ANF RTE TYPOGRAFI I DOKUMENTET FEJL INGEN TEKST MED DEN ANF RTE TYPOGRAFI I DOKUMENTET 26
5. district heat system are inactive in Dbuild version 1 0 Circulation pump The user may need a circulation pump which is added by marking the checkbox Include pump The reference pump is a Grundfos Alpha 15 60 with power con sumption 90 35 W The pump is in constant operation during the heating season The user can choose to optimize the pump by marking the checkbox Include pump in optimization As an example of an optimized pump a Biral 45 5 1s set as default Hot water consumption The amount of hot water consumed in a dwelling is according to Be05 2005 0 25 m per m floor area 250 liters The default value in Dbuild is 250 liters 19 1 USER GUIDE TO DBUILD Hot water tank This feature is not activated in Dbuild version 1 0 1 9 Other measures Other measures are optional energy measures that can be added to the building if the user wants to D build 1 0 General Constructions Windows Ventilation Internal load Heating system amp hot water Other measures Costs amp service Solar domestic hot water Other Net energy gain For hot water Energy consumption for pump amp control 15C kwhiyear Photovoltaic energy Include photovoltaics in optimization Net energy gain 200 kW A year Solar domestic hot water By marking the checkbox Include solar hot water in optimization the user
6. must specify e The net energy gain for hot water in kWh year The default value is 1500 kWh year corresponding to approx 60 of the total hot water consumption in a dwelling e The energy consumption for pump and control in the solar hot water system in kWh year Photovoltaic energy By marking the checkbox Include photovoltaic in optimization the user must specify the net energy gain by the photovoltaic compounds in kWh year The default value is 200 kWh year corresponding to the net energy gain produced by 2 ni solar panels 20 1 USER GUIDE TO DBUILD Other This application is not active in Dbuild version 1 0 1 10 Costs amp service D build 1 0 General Constructions Windows Ventilation Internal load Heating system amp hot water Other measures Costs amp service Economical parameters m Insulation costs per 100 mm Sustainable energy Service life Solar hot Photovoltaic Economical life 30 years years water Real interest rate 25 Roof Sal kr fm 100 Invest Ea i kr wall S4 kr jm2 100 ale kr year Floor 54 kr Jm2 100 rahe n 0 years Ventilation Extra costs For Service life years Energy Hot water pump tank Unit 27300 kr 20 Coste o ENS kr Ducts 36700 kr 100 Meinte o kr fvear Reduced la infiltration 5000 hr Maintenance 770 kr year Economical parameters The economical parameters are used in th
7. points The user may fill in set point temperatures for the heating system and the wanted indoor temperature The text boxes Night cooling and Cooling are not relevant for dwellings and are therefore not active in Dbuild version 1 0 No of floors The user fills in the number of floors in the building which in Dbuild version 1 0 is limited to 1 or 2 floors Room height The user inserts the room height of the building The room height is defined as the internal measure from floor surface to roof surface In case of multiple floors 0 2 m is automatically added as deck divider Heat capacity The user indicates the heat capacity Wh K per m of the building The capacity is divided into four categories defined in SBi 208 e Extra light 40 Wh K per m building all made of light materials e Medium light 80 Wh K per m some parts of the building are heavy mate rials 1 USER GUIDE TO DBUILD e Medium heavy 120 Wh K per m a large part of the building is heavy ma terials e Extra heavy 160 Wh K per m building all made of heavy materials 1 4 Constructions D build 1 0 General Constructions Windows Ventilation Internal load Heating system amp hot water Other measures Costs amp service Max acceptable insulation thickness m Thermal conductivity For insulation Roof construction 550 mm Roof construction 0 037 W mkK Wall construction 550 i mm Wall constr
8. wants to save the project When the user has answered the Dbuild worksheet will be closed Excel will still be open 1 12 Output After the calculation has finished Dbuild generates an output window containing three tabs Results 1 2 and 3 Result 1 Results I Results 2 Results 3 Energy consumption 27 2 kWh m2 Energy consumption vs cost of saved energy The building fulfills low energy dass 1 Comply with the amp W m2 demand 2 2 Wim2 No of hours above 26 deg C 0 0 15 0 20 0 25 0 30 0 35 0 40 0 45 Cost of saved energy kr kWh Energy consumption Energy frame 2006 Class 2 Class 1 This result tab contains the graph Energy consumption vs Cost of Saved Energy This graph is generated specific to the energy solutions selected by the user This means that one constellation of energy solutions has a corresponding Energy con sumption vs Cost of Saved Energy graph and another constellation of energy solutions has a different graph Therefore the user can not select all possible energy solutions generate the Energy consumption vs Cost of Saved Energy graph then read backwards in the graph 23 1 USER GUIDE TO DBUILD to the desired level of energy consumption and assume that this reduced constella tion of energy solution will correspond to the energy consumption on the y axis However this read backward principle is valid and useful because it gives a visual understanding of how to combine a
9. Class 1 This version of Dbuild version 1 0 only applies for dwellings but the user form is ready for implementation of an extended version that handles other types of build ings In this user guide Dbuild is described tab by tab Each feature and parameter in the user form is described and explained in chronological order as the user goes through the program Sometimes the user guide refers to a Design guide for further details which is Metode til optimering af nyt lavt boligbyggeri til lavenerginiveau Del B Designguide til energirigtigt byggeri This design guide is currently only available in Danish 1 USER GUIDE TO DBUILD 1 1 How to get started Dbuild is downloadable from the web page www energirigtigtbyggeri dk It is based on Microsoft Office Excel which is found in a number of editions Dbuild version 1 0 is currently available for the following versions of Excel e Microsoft Office Excel 2002 e Microsoft Office Excel 2003 The version of Excel on the work station can be determined as follows Open Microsoft Excel Click Help in the menu Select About Micro soft Office Excel Read the version info e g Microsoft Office Excel 2003 First time you use Dbuild you must set up your version of Excel as follows e Security level the security level has to be low or medium level You must accept all macros if asked when program is executed Security level is set as fol
10. Metode til optimering af nyt lavt boligbyggeri til lavenerginiveau User guide to Dbuild L lt 2 D build 1 0 Design of Energy Efficient Buildings Dbuild 1 0 Design of Energy Efficient Buildings Developers cand polyt Christian Hviid amp cand polyt Steffen Petersen In cooperation with professor Svend Svendsen BYG DTU Energy consumption vs cost of saved energy CN E s x e T a E e e e kazi c LL 0 15 0 20 0 25 0 30 0 35 0 40 Cost of saved energy kr kWh Energy consumption Energy frame 2006 Class 2 Class 1 Eksamensprojekt ved Danmarks Tekniske Universitet BYG DTU Vejleder professor Svend Svendsen Christian A Hviid s991170 Steffen Petersen s001384 Dato d 29 07 2005 1 USER GUIDE TO DBUILD 1 User guide to Dbuild The computer program Dbuild is a tool for optimization of energy performance in buildings Dbuild is an abbreviation of DEEBuild both pronounced the same way which is short for Design of Energy Efficient Buildings D build 1 0 Design of Energy Efficient Buildings Dbuild 1 0 Design of Energy Efficient Buildings Developers cand polyt Christian Hviid amp cand polyt Steffen Petersen In cooperation with professor Svend Svendsen BYG DTLI Energy consumption vs cost of saved energy 0 05 0 10 D 15 0 20 0 25 0 30 0 35 0 40 Cost of saved energy kr kWh Energy consumption Energy frame 2006 Class 2
11. constellation of energy solutions to acquire the desired level of energy consumption The user has to select the solutions of this constellation idea in Dbuild and run the program press Calculate once again to generate a precise and correct Energy consumption vs Cost of Saved Energy graph of the desired constellation The energy saving and corresponding CSE of the selected energy solutions can be seen to the right of the Energy consumption vs Cost of Saved Energy graph Furthermore the tab Result 1 also contains the following information e The Total energy consumption of the desired constellation of energy solu tions Indication of which energy class the building is fulfilling A calculation to assure that the demand of 6 W per m building envelope windows excluded is fulfilled according to Till g 9 2005 The number of hours above 26 C indoor Energy price of the selected energy source Result 2 Results Results1 Results 2 Results 3 Insulation vs cost of saved energy e c ED C CJ mm e e e Gross perimeter Perimeter area ground N Q Ce Lh G 2 amp w o o E s a ai Parameters Roof Wall Floo 0 05 0 10 Thermalcond W mK 0 037 0 037 Max insulation mm 501 504 49 Cost of saved energy kr KWh Uexcl of ins Wim2K 0 300 0 300 U incl of ins W m2K 0 072 0 072 Wall Roof Floor Line loss W mK Floor heati
12. ding infiltration Default in Dbuild e Winter mech in the winter time the mechanical ventilation is used The ventilation rate is 0 3 l s per m including infiltration default in Dbuild The parameters of the ventilation unit are set in Parameters for mechanical ven tilation Parameters for mechanical ventilation The user may fill in the following parameters of the ventilation system e Floor area m the floor area filled in by the user in the tab General e Heat rec efficiency the efficiency of the heat recovery unit from 0 to 1 See Designguide for further information e Inlet temp C the inlet temperature is the temperature of the air coming into the building In Dbuild the default value is 0 meaning that the inlet air has the temperature that the outdoor air obtains due to the heat recovery unit By setting Inlet temp to a positive value the ventilation unit will regulate 16 1 USER GUIDE TO DBUILD the heat recovery and if needed heat the inlet air to 20 C by using electrical power in a heating coil If the user fills in a negative value the heat recovery unit will not be regu lated and the inlet temperature will be the numeric value of the filled in tem perature using heating coil 1f necessary e Time of operation hours week value from the tab General 168 hours as default in Dbuild e SEL value kJ m SEL is the specific electrical power consumption for air transport T
13. e U value the center U value of the window W m K NB remember to press Add to finally add the frame profile If you change some information about the frame remember to press Update Glazing and frames Glazing Description Reference glazing 4 15 5N4 45SN 12 4 12 5N4 Frames Description Reference frame Rationel Passivhausramme VelFac fixed Frame VelFac top Button Shades The user can create a specific shade description pressing the shades button to the right of the main list and fill in the following information about the shading Shading profile users own name for the shading profile Horizon depending on the surroundings of the building Overhang depending on size of the overhang Left shading depending on size of the shading Right shading depending on size of the shading Build in depending on how deep the build in is NB remember to press Add to finally add the profile to the database If you change some information about the glazing unit remember to press Update 14 1 USER GUIDE TO DBUILD Shades Horizon Overhang Left Right Build in a re a a Tia ID Description Horizon Overhang Left Right Build n 10 Reference 1 a 3 d 2 amp Fi 9 1 Button Optimize By pressing the button Optimize the user starts an optimization of the areas and the amount of shading of the selec
14. e economic optimization based on Cost of Saved Energy as described in the Designguide section Fejl Henvisningskilde ikke fundet e Economical life the life span of the investment e Real interest rate the minimum yield of the investment excl inflation Energy prices The user can change the default energy prices by marking the checkbox Other The default energy prices are e Electricity 1 65 kr KWh e District heat 0 61 kr kWh e Gas oil 0 70 kr kWh Windows Here the user can change the service life of the window The default value 1s 30 years There is no distinction between the window frame and the glazing in Dbuild 1 0 21 1 USER GUIDE TO DBUILD Cost of the windows are found in the window database tab Window Insulation costs per 100 mm The user must fill in the prices of the insulation in the constructions Roof Wall and Floor The unit must be kr m per 100 mm insulation The default values should be seen as suggestions Furthermore the user can change the service lifetime Default value is 100 years Ventilation If the user applies mechanical ventilation and reducing of infiltration the following information about the ventilation system must be applied default values should be seen as suggestions Unit the price of the total ventilation unit and the service life Ducts the price of the duct system and its service life Reduced infiltration the price of reducing the
15. factor b is determined according to Be05 2005 The value of the factor is 1 as default If the ground floor is without floor heating the value must be 0 7 In version 1 0 crawl spaces are not supported Thickness excl insulation The user fills in the thickness of the part constructions This is necessary to calculate the net area of the building foot print heat transmission area according to DS 418 2002 section 3 6 Doors The user fills in the total area of external doors in the building and the U value of the doors If e g two external doors have different U values an average U value should be used 1 5 Windows D build 1 0 General Constructions Windows Ventilation Internal load Heating system amp hot water Other measures Costs amp service Minimum legal values Users minimum values N o m R N 2 me s 7 me E 7 me w 7 me z Min shading Factor n os s es no shading 10 1 USER GUIDE TO DBUILD Min legal start values Minimum legal start values are the start values needed for the optimization to start and take place The values are an area of windows generated automatically by Dbuild based on regulations from the Danish working environment authority The regulation recommend that the sum of window areas in the building should be at least what corresponds to 10 of the floor area www at dk Dbuild then assumes that these 10 of the floor area are d
16. his value must not exceed 1 2 kJ m Natural ventilation w o heat rec The natural ventilation is defined as follows e Summer the ventilation rate in the summer l s per m7 e Winter the ventilation rate in the winter l s per m The natural ventilation is thereby divided into a summer and winter situation e In the winter situation the ventilation rate is 0 3 1 s per m as demanded de fault in Dbuild including 0 13 l s per m infiltration e Inthe summer situation the ventilation should be raised due to the increased risk of overheating more than 100 hours above 26 C The maximum value for raising the natural ventilation by opening windows and doors is 1 2 l s per m Be05 2005 including 0 13 1 s per m infiltration Default in Dbuild 17 1 USER GUIDE TO DBUILD 1 7 Internal load The internal load in dwellings cannot be optimized due to Be05 2005 This tab is implemented due to future updates of Dbuild which may include e g design of offices where the internal load is an important part of the energy consumption D build 1 0 General Constructions Windows Ventilation Internal load Heating system amp hot water Other measures Costs amp service Floor area Persons Equipment Eoun mon Sum Occupation and lighting zones me wim Wimz W m2 D 8 5 as ML RS This tab contains the following parameters Occupation and lighting zone user s description of the zone Floor area m the floor
17. infiltration Maintenance the maintenance costs of the ventilation system per year e g filters and cleaning sustainable energy The following information about additional sustainable energy solar hot water and photovoltaic technology must be applied default values should be seen as sugges tions e ZInvest the size of the investment in kr e Maintenance the maintenance costs of the investment e Service life the service life of the investment in years Extra costs The following information about additional extra costs must be applied e Energy pump if an energy pump is chosen by the user the price difference between the standard pump in the area of 1 000 kr and the energy pump must be applied Furthermore costs of maintenance per year and service life must be applied e Hot water tank this application is not active in Dbuild version 1 0 1 11 Calculate save and exit Calculate After the user has pressed the button Calculate the window optimization will run an update before the final CSE optimization initiates Results will pop up automati cally see section 1 12 22 1 USER GUIDE TO DBUILD Calculate Save Exit Save The button Save is not functional in Dbuild version 1 0 The only way to save the project is when user press Exit However Dbuild will always store the values filled in by the user even if program crashes Exit When the user presses Exit Excel will ask if the user
18. ions Windows Ventilation Internal load Heating system amp hot water Other measures Costs amp service Balanced mechanical ventilation w heat rec r Natural ventilation w o heat rec iv Include mechanical ventilation wi heat rec in optimization Ene fiz Us pr m2 Summer nak Winker mech Infiltration ccm om o5 Wear mE Winter 0 3 ls pr m2 are used to calculate the reference Reduced infiltration 0 05 lis pr m2 Parameters For mechanical ventilation Floor Heat rec Inlet Time of area efficiency temp operation SEL value Inlet temperature erc hours week KJ m3 O Heat rec regulation an Heating coil up ka inlet temp mz 0 No regulation of heating rec Mo heating zur 0 3 LE l lt 0 Mo reg of heating rec Reg of heating coil to inlet ternp Calculate Mechanical ventilation w heat rec In Dbuild mechanical ventilation and reduced infiltration is included as default The mechanical ventilation is divided into a summer and a winter situation e Summer nat in the summer time the mechanical ventilation is bypassed and the ventilation of the building 1s thereby natural ventilation The summer ventilation rate should be raised due to the increased risk of overheating more than 100 hours above 26 C The maximum value for raising the natu ral ventilation by opening windows and doors is 1 2 l s per m Be05 2005 inclu
19. istributed in the cardinal direction with the factors in Tabel 1 1 Tabel 1 1 Distribution of windows in the cardinal directions starting from south or SW SE Main facade Factor Lock Main facade Factor Lock direction South direction SW SE North N v Northwest NW South S Southeast SE v East E v Northeast NE West W y Southwest SW y In Tabel 1 1 Main facade direction South the window area is only distributed to the S E and W direction 0 33 in each direction because windows in the north direction under any circumstances will lead to an energy loss Furthermore for rooms placed with a corner in e g the northwest direction a window should be placed in the west facade rather than in the north facade thereby obtaining the needed window area in the room in the most energy efficient way In an optimization process without restraints Dbuild would maximize the window area to the south and minimize eliminate windows areas to the other directions Because of this the factors in Tabel 1 1 are locked in the N E and W direction This means that the areas in these directions are constant when the button Opti mize is pressed and the demands in www at dk are thereby met Same principles applies for Main facade direction SW SE in Tabel 1 1 User start values If the user has any other preferences to the start values than the minimum legal start values it is possible to change these in this setting
20. k Ok e Tilfojelsesprogrammer Dbuild skal bruge Tilfojelsesprogrammet Problem loser som ikke er installeret 1 standard opsaetningen 1 Excel Denne tilfojes som folgende Klik Funktioner i menuen v lg Tilfajelsesprogrammer marker checkboksen ved siden af Tilfajelsesprogram Problemleser Klik Ok e Initialiser Problemloser Problemlgseren skal initialiseret Dette sker som folgende Klik Funktioner i menuen v lg Problemleser Klik Luk 1 USER GUIDE TO DBUILD NB Ovenst ende skal kun g res f rste gang Dbuild bruges p den p g ldende computer Men fremover er det vigtigt at starte Dbuild p felgende m de o ben Excel seperat for Dbuild bens e Initialiser Problemloser Problemleseren skal initialiseret Dette sker som folgende Klik Funktioner i menuen v lg Problemleser Klik Luk Nu er programmet klar til at blive bnet 1 Excel Accepter alle makroer Excel sp rger Start Dbuild 1 sin egen mappe da Dbuild genererer en r kke forel bige filer som bliver gemt p computeren n r Dbuild k res ben Dbuild indefra Excel efter du har initialiseret Probleml seren Ydermere s husk f lgende ved brugen af Dbuild e Brug punktum som separator 1 decimal tal f eks 54 23 ellers opst r der fejl 1 programmet e Udfyld alle faneblade 1 Dbuild undtagen Other measures og Costs and service f r der trykkes p knap
21. lows Click Tools in the menu select Macro select Security choose Low or medium level Click Ok e Solver add in Dbuild needs a Solver add in which is not installed in a standard setup of Excel The Solver add in is applied as follows Click Tools in the menu select Add ins mark the checkbox next to Solver add in Click Ok e Initialize solver the solver needs to be initialized This is done as follows Click Tools in the menu select Solver click Close NB This only has to be done the first time you use Dbuild But every time you want to start up the program you have to do it as follows e Open Excel separate before opening Dbuild e Initialize solver the solver needs to be initialized This is done as follows Click Tools in the menu select Solver click Close Now the program is ready to be opened in Excel Accept all macros when asked Start up the program in its own folder as Dbuild is generating temporary files which is stored on the computer when the program is executed Open Dbuild from within Excel after initializing the solver Furthermore when using Dbuild please remember to 1 USER GUIDE TO DBUILD e Use point as separator in case of decimal numerals e g 54 23 or the program will corrupt e Fill out every tab in the program except Other measures and Costs and service before
22. ng This result tab contains the graph Insulation vs Cost of Saved Energy The graph is generated in respect of the Max acceptable insulation thickness in the tab Con structions In this graph the user can read the insulation thickness of the wall roof and floor corresponding to any CSE 24 1 USER GUIDE TO DBUILD Following information can be seen to the right of the Insulation vs Cost of Saved Energy graph e Geometry a summary of the geometry parameters of the building e Constructions parameters describing the constructions wall roof and floor NB The optimized insulation thickness in the wall roof and floor 1s listed under Constructions Result 3 Results Results 1 Resuts2 Results 3 Distribution of energy consumption Window areas Orientation Total 27 2 kKWhim2 B34 Ww BOpt 35 m2 User 36 m2 Winter Distrib of elec energy consump Shading factor Infiltration Total 1 3 KWh m2 Heat rec Inlet temp deg C n93 SEL value kJ m3 Bg Optimum TEA D Ventilators m User Net pr veis i Circ pump D AMometior NPY kr 207700 11844 40202 This result tab contains four graphs e Distribution of energy consumption the total energy consumption and distri bution e Distribution of electrical energy consumption the total electrical energy con sumption and distribution e Window areas Orientation the area of windows and the corresponding ori entation The user
23. on of energy savings is based on a reference house that uses these values It is however important that the costs of the reference window is estimated correctly Furthermore the user is presented to four very energy efficient windows placed in the four cardinal directions of the building which is used as default windows in the user s building The windows can be changed by marking the line of the window to be changed and then fill in the following information about the window 12 1 USER GUIDE TO DBUILD e Description user s own description optional e Window type the user can either select existing windows from the default database of windows in the Window type drop down menu or generate new windows in the Window database e Shading the user can choose default shadings in the Shading drop down menu or create a specific shading description pressing the shadings button to the right Press Update to store data Orient orientation is a value fixed by Dbuild as is Inclination only 90 win dows are possible in Dbuild version 1 0 It is possible to add the users preferred windows to the Window database below the main list and use these as Window type in the main list This is done as fol lows e Description users own name for the window e Glazing the user can either select an existing glazing from the default data base in the Glazing drop down menu or generate new glazing units by
24. pen Optimize 1 fanebladet Window for at sikre en korrekt vinduesoptimering e V r altid kritisk over for input og output data 1 Dbuild Hvis du har problemer eller kommentarer kontakt da info energirigtigtbyggeri dk 1 USER GUIDE TO DBUILD 1 3 General D build 1 0 General Constructions Windows Ventilation Internalload Heating system amp hot water Other measures Costs amp service Name of project Exampel House 200 m2 Type of building Dwelli Heated ground area 7 r Occupation Set points Hoursfweek Startat Endat Heating 20 C al Net area l m2 Wanted bemperature 2U C Optimum gross E m NINE Matveritilation 24 C perimeter S Design indoor temperature 20 ba Gross area 200 2 Perimeter ground area ratio 0 3 No of floors 1 T K ling ga ec Pre eam Room height z al cc cc Heat capacity Extra light 40 01 WhjK pr mz Name of the project The users own call name or description of the project Type of building The type of building is a dwelling Dbuild can only handle dwellings in this 1 0 version Heated ground area The user can choose to fill in the gross area of the building the area based on the outside measures of the building or the net area the inside measures of the build ing Depending on what kind of area the user 1s filling in gross or net Dbuild generates the optimum perimeter smalles
25. t perimeter of the building This optimum is calcu lated under the following assumptions e Rectangular building minimum perimeter see Design guide section Fejl Henvisningskilde ikke fundet e Maximum width of building is 10 m to assure sufficient day light penetra tion Knowing the Heated ground area and the perimeter of the building Dbuild auto matically calculates the perimeter ground area ratio for further information about perimeter ground area ratio see Design guide section Fejl Henvisningskilde ikke fundet 1 USER GUIDE TO DBUILD Button Perimeter If the user at some point comes up with a specific geometry that 1s different from the optimum geometry as defined above the perimeter of the new building geometry must be applied by pressing the Perimeter button in Heated ground area and filling in the new perimeter Heated ground area r Occupation m Set poin Haurshweek Start at End at j i Gross area 200 mz Heatinc C Net area mz User defined 5E m Gross perimeter m perimeter Perimeter ground area ratio 0 3 Perimeter Occupation The occupation time of a dwelling is according to Be05 2005 168 hours a week start at 0 and end at 24 This corresponds to an occupation time of 24 hours a day the whole week throughout the year These values are currently fixed by Dbuild version 1 0 Set
26. ted windows starting from the Min legal start values or the User start values The graphs to the right in the Window tab are the results of the optimization The Opt optimum columns are the optimal amount of windows based on Min legal start values areas locked in the N E and W direction and the user columns are the optimal amount of windows based on the User start values no areas locked When optimizing further the window areas displayed as user are used Net energy kWh m This text box shows the net energy use of the building for the optimum solution and the user solution No of hours gt 26 C This text box shows the number of hours gt 26 C in the building for the optimum solution and the user solution Check box Include windows in optimization If this check box is unchecked the optimization of windows is bypassed The win dow types are then the reference windows U 2 3 W m K and the areas and orien tations of the windows are as Min legal start values 1 6 Ventilation Due to The Danish Building Code BR S 98 supplement 9 the air change rate in a dwelling must be at least 0 5 h corresponding to 0 3 1 s per m This can be ob tained in Dbuild by natural or mechanical natural ventilation Dbuild calculates the reference energy consumption of the building with natural ventilation 15 1 USER GUIDE TO DBUILD D build 1 0 General Construct
27. uction 0 037 Wm Thickness excl of insulation Roof D 1 m Wall 0 1 m b Factoris Estimated line loss JmK i E porated Doors Reference U values These values are default reference U values of the part constructions that cannot be changed The calculation of energy savings is based on a reference house that uses these values minimum U values according to Till g 9 2005 Max acceptable insulation thickness The default value of max acceptable insulation thickness is 600 mm for each con struction part The user can change this value if required It is recommended to keep a relatively high value in relation to the energy optimization Please note that the optimization always will suggest a lower value than the one intended especially when optimizing on the basis of gross area Thermal conductivity for insulation These values are the thermal conductivity A value for insulation in the part con struction Default value is 0 037 W mK which is the thermal conductivity of a standard insulation product The user may fill in another value if desired Resistances excl of insulation USER GUIDE TO DBUILD The resistances of the part constructions excl of the resistance of the insulation The other materials of the part constructions have thermal resistances that need to be calculated and given in Dbuild due to the transmission area calculations according to DS418 2002 section 6 The temperature
28. you press Optimize in the tab Window to ensure a cor rect window optimization e Always be critical to input and output data in Dbuild Any problems or comments please contact info energirigtigtbyggeri dk 1 USER GUIDE TO DBUILD 1 2 Hvordan kommer jeg i gang med Dbuild Dette er en dansk overs ttelse af afsnit 1 1 How to get started Overs ttelsen er udarbejdet da nogle brugeres version af Excel er p dansk og det kan v re vanske ligt at overs tte de engelske begreber 1 Excel til de tilsvarende danske begreber Dbuild kan downloades fra hjemmesiden www energirigtigtbyggeri dk Dbuild er baseret pa Microsoft Office Excel der forefindes 1 forskellige udgaver Dbuild version 1 0 er indtil videre tilg ngelig til f lgende udgaver af Excel e Microsoft Office Excel 2002 e Microsoft Office Excel 2003 Udgaven af PC ens Excel kan bestemmes som f lger ben Microsoft Excel klik Hj lp i menuen V lg Om Microsoft Of fice Excel Les udgave f eks Microsoft Office Excel 2003 For Dbuild startes er det n dvendigt med f lgende indstillinger 1 Excel e Sikkerhedsniveau sikkerhedsniveauet skal vere lav eller medium ni veau Brugeren skal acceptere alle makroer hvis der sp rges ved program mets opstart Sikkerhedsniveauet stilles som f lgende Klik Funktioner i menuen v lg Makroer v lg Sikkerhed v lg Lav eller medium Kli
Download Pdf Manuals
Related Search