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2 Used for insulation outside The rigid polyurethane foam without solvent.
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2 Used for roofing heat preservation Roofing, outer wall, ground heat transfer coefficient K value calculation: F(roof)＝ 1/R R =δ/(λ·α) Rvalue calculation(refer with: Table 2) Table 2 : R value calculation Material material Coefficient of thermal conductivity (λ) Correction coefficient (α) Thick degree (δ) Thermal resistance (R) cement mortar hang watts.
DOI: 10.3403/01275705
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03 R=0. 03/0. 93=0. 032 the waterproof layer.
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004 R=0. 004/0. 17=0. 0235 cracking mortar.
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005 R=0. 005/0. 93=0. 0053 light mortar screed-coat.
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02 R=0. 02/0. 29=0. 0690 solvent free the rigid polyurethane foam.
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12 R=0. 12/ (1. 5X0. 027)=2. 963 cement mortar screed-coat.
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02 R=0. 02/0. 93=0. 02299 reinforced concrete roof board.
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1 R=0. 1/1. 74=0. 0575 mixed mortar.
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02 R=0. 02/0. 87=0. 023 ∑R(roof)=0. 032+0. 00235+0. 0053+0. 0690+2. 963+0. 02299+0. 0575+0. 023=3. 175 K(roof)＝1/R=1/3. 175=0. 315 (W/(M2•K) F(roof)=107. 1㎡ Exterior wall K value calculation Main body wall(refer with: Table 3) Table 3: Main body wall Material material Coefficient of thermal conductivity (λ) Correction coefficient (α) Thick degree (δ) Thermal resistance (R) mixed mortar.
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02 R=0. 02/0. 87=0. 0230 the common clay bricks.
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37 R=0. 37/0. 81=0. 4570 the air layer.
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01 R=0. 140 polystyrene.
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08 R=0. 08/(0. 042x1. 2) =1. 361 the bond type powder polystyrene particles.
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2 10 R=0. 01 /(0. 070x1. 2)=0. 119 cracking mortar.
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005 R=0. 005/0. 93=0. 0053 ∑R =0. 0230+0. 4570+0. 14+1. 361+0. 119+0. 0053=2. 105 K (Main body wall )＝ 1/R=1/2. 105=0. 475 (W/(M2•K) F (Main body wall )=48. 888+46. 068*2+65. 688 =206. 712㎡ Ring beam, lintel, constructional column K value calculation(refer with: Table 4) Table 4: Ring beam, lintel, constructional column K value calculation Material material Coefficient of thermal conductivity (λ) Correction coefficient (α) Thick degree (δ) Thermal resistance (R) mixed mortar.
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02 R=0. 02/0. 87=0. 0230 Reinforced concrete column, beam.
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37 R=0. 37/1. 74=0. 2126 the air layer.
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01 R=0. 140 polystyrene.
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08 R=0. 08/(0. 042x1. 2) =1. 361 the bond type powder polystyrene particles.
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01 R=0. 01 /(0. 070x1. 2)=0. 119 cracking mortar.
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005 R=0. 005/0. 93=0. 0053 ∑R =0. 0230+0. 2126+0. 14+1. 361+0. 119+0. 0053=1. 861 K(bridge. column)＝ 1/R =1/1. 861=0. 537 (W/(M2•K) F(bridge. column)= (14. 28+7. 680)*2*0. 45=19. 764㎡ Exterior wall average heat transfer coefficient K(outer) ＝ (K(main wall)x F(main wall)+ K(bridge. column)x F(bridge. column)/ (F(main wall)+ F(bridge. column)= (0. 475 x 206. 712+0. 537 x 19. 764)/206. 712+19. 764= (98. 1882+10. 61)/226. 476=0. 4834 (W/(㎡•K) The ground around the area of the house to take the around the area of the 2 m expansion after, so for: K(floor)＝ 0. 3 F(floor)= (2+14. 28+2)+ (2+7. 680+2)=18. 28*11. 68=213. 510㎡ Window wall area than calculation Open hole wall area calculation: F( south hole)= 1. 800*2. 000*3+1. 500*2. 000*2=16. 8 F (south)= (13. 800+0. 480)*4. 6-1. 800*2. 000*3-1. 500*2. 000*2=65. 688-10. 8-6=48. 888 Window wall area than: The south for: 16. 8/48. 888 = 0. 344 < 0. 35 North : 0 < 0. 25 East, west : 0 < 0. 30 Building material consumptions heat index: Heating period of indoor and outdoor temperature difference of the building(refer with: Table 5) ti=16 te= -6. 2 ti-te=22. 2 Table 5: Heating period of indoor and outdoor temperature difference of the building project Correction factor: E Ki [w/(m2. k)] Fi (m2) EKi . Fi (ti-te).E. Ki . Fi roof.
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025 666. 56 Exterior wall north.
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166 381. 086 east.
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056 423. 054 west.
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056 423. 054 south.
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384 652. 329 Outside door window north.
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5 233. 1 ground 1.
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053 1421. 976 Heating heat consumption (W) QH. T= (ti-te). ( ∑ E. Ki . Fi)=4201. 159 The air permeability of heat consumption (W) QINF= (ti-te). CP .N. V 0=22. 2 x0. 28 x1. 29 x0. 8 x585. 401=3755. 295 Heat transfer heat consumption index (W/m2) qH. T= QH. T/AO =4201. 159/112=37. 510 The air permeability of heat consumption index (W/m2) qINF= QINF/AO =3755. 295/112=33. 529 Internal heat qI. H=3. 8 Building material consumptions heat index (W/m2) qH= qH. T+ qINF- qI. H= 37. 510+33. 529-3. 8=67. 239 Conclusions According to the state formulates the standards for energy conservation Hohhot area: 21. 3, the residential building material consumptions heat index greater than 21. 3 67. 239, not the energy-saving standards. Advice is through the lower layer construction and increase condole top, to reduce the heat consumption index measures. Acknowledgements This work was financially supported by National Natural Science Foundation of China(50808099) and Inner Mongolia Natural Science Foundation of China (2010MS0709) and Inner Mongolia autonomous region higher school science research project of China(NJZY11155) and Inner Mongolia autonomous region higher school science research project of China (NJZY12114) and Inner Mongolia university of science and technology innovation fund project (2011NCL044). The authors would like to express our gratitudeto all those who helped us during the investigation process. Anonymous referees are gratefullyacknowledged for careful reviewing of the earlier version of this manuscript.
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