Ventilation Air Conditioning

Download BRE Building Elements: Building Services: Performance, by H.W. Harrison PDF

By H.W. Harrison

The fourth e-book within the BRE construction components sequence, this ebook is ready the gamut of fuelled, piped, ducted, stressed and mechanical amenities which expand over the entire age variety of the UK’s development inventory. it's the caliber of heating, man made lights and different companies, comparable to refuse disposal which makes an different clever naked carcass liveable - even effective and stress-free.

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Read or Download BRE Building Elements: Building Services: Performance, Diagnosis, Maintenance, Repair and the Avoidance of Defects (BR 404) PDF

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Additional info for BRE Building Elements: Building Services: Performance, Diagnosis, Maintenance, Repair and the Avoidance of Defects (BR 404)

Example text

4 Thermal storage capacities. 4a) warm up relatively slowly. 5 Draughtstripping to control unwanted air infiltration. This example is factory applied. 6 Infrared thermography image of part of a three-storey office building. This technique is used to identify thermal bridges or areas of reduced thermal insulation, and therefore higher surface temperatures where heat is being lost to the outside of the building 24 Case study Effects of different forms of glazing on energy consumption Experiments on the comparative energy consumption of houses with single, double and heat reflecting glazing were carried out in the BRE ‘matched house pairs with simulated occupancy’.

3 Condensation LQWKHIROORZLQJ\HDUVWKHFDVHORDGRI WKH$GYLVRU\6HUYLFHURVHDJDLQ 5HGXFHGZDOOWKLFNQHVVHV DQG KHQFHUHGXFHGLQVXODWLRQ PD\H[LVW LQSRUFKHVSUHYLRXVO\EULFNHGXS RSHQLQJVDQGZKHUHILUHSODFHVKDYH EHHQUHPRYHG+DOIEULFNVROLGZDOOV RIWHQIRXQGLQSURMHFWLQJEDFNURRPV RIµE\HODZKRXVLQJ¶DUHKLJKO\ VXVFHSWLEOHWRVXUIDFHFRQGHQVDWLRQ DQGPRXOGJURZWK )LJXUH  ● &RQGHQVDWLRQFDQEHDSUREOHPDW ZLQGRZDQGGRRUUHYHDOVZKHUH WKHUHPD\EHORFDWLRQVZLWK UHGXFHGZDOOWKLFNQHVV&RUURGLQJ PHWDOFRUQHUEHDGVDURXQGZLQGRZ RUGRRURSHQLQJVPD\LQGLFDWHWKDW FRQGHQVDWLRQKDVEHHQDSUREOHP ● ,PSHUYLRXVH[WHUQDOZDOOFRDWLQJV PD\SUHYHQWRUUHVWULFWGU\LQJRXW RIZDWHUYDSRXUIURPWKHZDOODQG OHDGWRGDPSQHVVDQGDQLQFUHDVHG ULVNRIFRQGHQVDWLRQ ● &KDQJHVWRKHDWLQJYHQWLODWLRQDQG RFFXSDQF\SDWWHUQVRQWKHRWKHU KDQGFDQRIWHQOHDGWR FRQGHQVDWLRQDQGPRXOGZKHUH SUHYLRXVO\QRSUREOHPVZHUH HQFRXQWHUHG7KHUHLVIXUWKHU GLVFXVVLRQRIFRQGHQVDWLRQRQ ZDOOVDQGLWVWUHDWPHQWLQ:DOOV ZLQGRZVDQGGRRUV&KDSWHU Condensation on windows and doors 2IDOOGZHOOLQJVLQ(QJODQG   ● KDYHGRXEOHJOD]LQJRQDOO ZLQGRZV ● KDYHGRXEOHJOD]LQJRQVRPH ZLQGRZV ● KDYHQRGRXEOHJOD]LQJ ,WLVROGHUGZHOOLQJVZKLFKDUHOHVV OLNHO\WRKDYHGRXEOHJOD]LQJ PRUH WKDQWZRWKLUGVRIWKRVHGZHOOLQJV GDWLQJIURPEHIRUHKDYHQR GRXEOHJOD]LQJ PRVWOLNHO\EHFDXVH RIWKHUHWHQWLRQRIGHVLUDEOH DUFKLWHFWXUDOIHDWXUHVVXFKDVZRRGHQ VDVKZLQGRZVZLWKVOHQGHUJOD]LQJ EDUVZKLFKZLOOQRWWDNHVHDOHGGRXEOH JOD]LQJXQLWV)XUWKHULQIRUPDWLRQLV JLYHQLQ:DOOVZLQGRZVDQGGRRUV &KDSWHU ,Q6FRWODQGZLWKDFROGHUFOLPDWH QHDUO\WZRWKLUGVRIGZHOOLQJVLQ KDGIXOOGRXEOHJOD]LQJ FRPSDUHGZLWKMXVWRYHURQHWKLUG LQ   Condensation on floors 7KHLQVXODWLRQYDOXHRIPDQ\NLQGVRI IORRUFDQEHGHJUDGHGE\WKHUPDO EULGJHVZKHUHKLJKWKHUPDO WUDQVPLVVLRQPDWHULDOVSHQHWUDWH OD\HUVRIORZWKHUPDOWUDQVPLVVLRQ PDWHULDOWKLVPD\RFFXUDWWKUHVKROGV RUVOHHSHUZDOOV7KHUPDOORVVHVGXH WRWKHUPDOEULGJHVDUHRIWHQLJQRUHG LQFDOFXODWLRQVHVSHFLDOO\ZKHUHWKLQ VHFWLRQVDUHLQYROYHGEXWWKHVHDQG 31 Case study Excessive condensation on windows of a refurbished house Two adults and four teenage children occupied a 1920s semi-detached house which had been modernised.

6 Infrared thermography image of part of a three-storey office building. This technique is used to identify thermal bridges or areas of reduced thermal insulation, and therefore higher surface temperatures where heat is being lost to the outside of the building 24 Case study Effects of different forms of glazing on energy consumption Experiments on the comparative energy consumption of houses with single, double and heat reflecting glazing were carried out in the BRE ‘matched house pairs with simulated occupancy’.

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