ontwerpdagen
English translation: design days
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| 12:20 Mar 31, 2015 |
| Dutch to English translations [PRO] Tech/Engineering - Mechanics / Mech Engineering | |||||||
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|  Selected response from: Barend van Zadelhoff Netherlands Local time: 15:41 | ||||||
Grading comment
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| Summary of answers provided | ||||
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| 4 +2 | design days |
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| 3 | daytime spaces // 24-hour spaces |
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| Summary of reference entries provided | |||
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| heating and cooling loads calculation |
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| Discussion entries: 1 | |
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Answers
3 hrs confidence: 
daytime spaces // 24-hour spaces Explanation: This is about climatic data for comfort zone calculations (to determine the cooling load and the thermal output) The context seems to be as follows: Climate has an influence on the thermal sensation and preferences of people and on the design of the buildings they inhabit. There has been a growing interest among architects and building contractors to make buildings that are responsive to climate and the thermal comfort requirements of the building users. With the help of this tool, architect and designers will be able to understand comfort and weather characteristics of a place before designing a building. Data are obtained on certain days or during 24-hour periods that are supposed to be representative of a whole month. Reference: http://www.carbse.org/comfort-and-weather-analysis-tool-tech... Reference: http://www.magicad.com/en/content/magicad-comfort-energy-ene... |
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5 hrs confidence: peer agreement (net): +2
peer agreement (net): +2design days Explanation: I refered to the English version amongst other things In order to optimize the representativeness of the weather data, in accordance with what found by some authors in literature and coherently with what prescribed by the EN ISO 15927-4:2005, the TRYEN calculation procedure can be modified introducing weighting factors for the different primary variables to develop TRY for specific purposes (e.g., heating or cooling energy needs evaluation). This is partially already done for the design days according to the EN ISO 15927-2:2009 (CEN, 2009) and could be extended to the TRY calculations. http://tinyurl.com/qc8v2jk ISO 15927-2:2009-02 (E) Hygrothermal performance of buildings - Calculation and presentation of climatic data - Part 2: Hourly data for design cooling load 4 Method determination 4.1 Sources data 4.2 Identification of the design days 5 Data for the design of air conditioning systems 6 Presentation of the design days http://tinyurl.com/pjkt72g Termen en definities 3.12 ontwerpbuitentemperatuur := buitentemperatuur met een bepaalde frequentie van vóórkomen die gebruikt wordt voor het bepalen van het ontwerpwarmteverlies van een gebouw 3.13 ontwerpdag := dag van een kalendermaand met een gegeven overschrijdingskans voor extreme waarden van significante klimaatgrootheden als bijvoorbeeld de buitenluchttemperatuur, globale zonnestraling en luchtvochtigheid https://www.nen.nl/pdfpreview/preview_120501.pdf On Development of Design Day for Cooling Energy Need Calculations The idea is to replace the design day for cooling load calculation by design day for cooling energy need (DEDCEN) while keeping the same calculation procedure. This would enable to introduce the dynamic impact of weather to the calculation of cooling energy use. http://www.irbnet.de/daten/iconda/CIB8068.pdf -------------------------------------------------- Note added at 6 hrs (2015-03-31 18:47:34 GMT) -------------------------------------------------- Antother interesting example: A series of test cases were run in EnergyPlus to test the TIM model. The building was a very simple box with walls facing north, south, east, and west, all of which are exterior walls. Transparent Insulation Material has been applied to the south wall (except as noted in the table below). The program was run for this fictional 1 zone building located in Chanute AFB IL, for two design days, (21st June and 21st January). The main purpose of these runs was to verify that the transparent insulation model was predicting results that were reasonable using a simple test case. The winter design day was also modified in some runs to have a clearness of 1.0 so that the effect that solar radiation during winter-time conditions could be studied. Test cases included no movable insulation, moveable opaque insulation, and TIM on the exterior (south wall unless otherwise noted). Savings reported are heating and cooling loads for the design days only. The results showed that the TIM model was performing reasonably well and was producing results that were within expectations. See for further info the pdf http://apps1.eere.energy.gov/buildings/energyplus/pdfs/engin... -------------------------------------------------- Note added at 1 day1 hr (2015-04-01 13:54:14 GMT) Post-grading -------------------------------------------------- It is 'odd' technical language (and it is a complicated concept). If you come across ISO standards in your translation it can be very helpful to refer to the equivalents of the target language. It would even be wise to copy the equivalent sentences you find there, as these are part of the approved standard. In addition, the English version is most likely no translation of the Dutch version. |
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Grading comment
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9 hrs peer agreement (net): +1 |
| Reference: heating and cooling loads calculation Reference information: The Heating and Cooling Loads feature was designed following the specifications of the ASHRAE Handbook of Fundamentals. There are several ways to determine peak loads, and the one that this feature adheres to is the RTS (Radiant Time Series) method. (...) For the cooling loads calculation, a design day is derived for each of the 12 months of the year, with a maximum dry-bulb temperature corresponding to the 1% monthly percentile temperature for the location. This is the temperature that is exceeded on average, during that month, for 1% of the time. (...) Design cooling loads are based on the assumption of steady periodic conditions (i.e., the design day's weather, occupancy, and heat gain conditions are identical to those for preceding days such that the loads repeat on an identical 24 h cyclical basis). http://inside-the-system.typepad.com/files/rme_calc_heating_... |
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