8 建筑环境设计模拟分析软件DeST（8）--通风加工稿_1.13_.doc

Size: px

Start display at page:

Download "8 建筑环境设计模拟分析软件DeST（8）--通风加工稿_1.13_.doc"

臭缵雷
5 years ago
Views:

1 DeST 8 DeST Building environment design simulation software DeST(8): combined simulation of naturaland mechanical ventilation By Zhang Ye, Zhang Yufeng, Song Fangting, Ya Da and Jiang Yi Abstract It is very important to understand the building ventilation conditions, because ventilation and infiltration affect building environment directly and instantly. Ventilation in buildings includes natural ventilation and mechanical ventilation. They are essentially the same and often occur at the same time, so need to be considered together instead of separately. Explicates the uniform network model and the solving method in the building simulation tool - DeST, which is developed from the multizone airflow network model and the pipe network model. Provides mathematical models for commonly used building components and achieves coupled simulation of natural ventilation and mechanical ventilation. Gives some case studies to illustrate how to solve the problems in designing building ventilation systems by DeST and indicates the significance of using simulation tools for ventilation design. Keyword natural ventilationmechanical ventilationairflow network modelstatic pressure ( zhangye0@mails.tsinghua.edu.cn

2 [1~] 30 DeST airflow model thermal model 50 [3] 1.

3 Tjbaou [4] DeST.1 0 [5] a)comis [6~7] b)contam [8] c)breeze [9] d)natvent [10] e)passport Plus [11] f)aiolos [1] a),b),c) d) e)f) Kendrick sequential coupling [13] [14] Hensen ping-pangonion [15] 1-3 -

4 onion 1 EnergyPlus COMIS COMIS [16] [16] ping-pang TRNSYS COMIS TRNSYS COMIS-TRNSYS TYPE 157 TYPE 56 onion [17] s 1 min 1 h [18]. a) b) CONTAM [8] CONTAM DOE- [19] DeST DeST - 4 -

5 - 5 - a) b) 3

6 3 3 A [0] N + 1 B N B A + 1 bj ni ni aij = 1 bj ni ni 0 b n j i A n A N i gi = q i i g i i q ρ ( av av 1 1) Z p1 p = + ht hp + ρgdz 0-6 -

7 p 1 p ρ v h t h p hp a 1 a Z a ρu d 3 u A d u A a = = 3 ρv v da va d u v a a DeST CFD 3 1 AG = Q T AP = DH H = SGG +? gz -DH -? P v A G kg/sq - 7 -

8 P PaH PaDH PaS P PaZ r kg/m 3 v g P v i ρ p vi = cos( αi) ai vi vi cos( αi1) ai1 vi1 v i1 4 v v α i1 α i 0 i1 i 90 a i1 a i Q = 0 5 Q 5-8 -

9 Z DeST 3. B N + 1 A N B A A A A= [, ] A A t l t G l l G A A A Q 5 I 0 l = Gl + S S t = l S Gt G = G l G G G DH t DH = DH l pvt Zt pv = Z = p vl Zl rt r = rl t = l 3 A p = S G G + r gz DH p T t t t t t t t vt A p = S G G + r gz DH p T l l l l l l l vl AA ( S G G + r gz DH p ) = SG G + r gz DH p T l t t t t t t vt l l l l l l vl T B =, f A A I l B f ( B N) B Bf ( SG G+ r gz DH pv) = G 6 B N B N 6 S S = S( G) l - 9 -

10 F = Bf ( SG G+ r gz DH p ) G A A l T 5 = = Bf Gl I F S DH ( pv) = Bf( SG + G G ) B G G G G l v S1 S1 S1 G1 sign( G1) G sign( G) GB sign( GB) G1 G G B S S S S G sign( G ) G sign( G ) G sign( G ) 1 1 B B G1 G G G G = B G SB SB SB G1 sign( G1) G sign( G) GB sign( GB) G1 G G B sign( G j ) j l T f F G p = SG 7 S = SG ( ) 8 G 7 8 DeST S

11 DeST 7 S a (a) l ρv p = λ d 7 S λl S = 9 dρ A λ l ρ d ' ε λ = 0.11( + ) d Re λ = λ + λ < ' ' λ = λ λ ' ' ε Re = vd ν v ν kpa 0 1. kg/m 3 ν = m /s (b) ρv p = ζ Pa 7 ζ S = 11 ρa ζ ζ ζ T

12 6 6 I T 6 II ρ v3 v3 l ρ v3 v3 p1 p3 = ζ pv 13 + λ 1 d ζ p 1, p3 1,3 v 3 3 λ l ρ d ρ v v 1 p 3 3 v13 = 1 l ρ p1 p3 = ( ζ λ ) d v v 3 3 ζ ζ p > p v > ζ 7-1 -

13 [1] S 7 CQ kgpa n G = C ( p) n 13 Q 1 1 n n Q S = C G /s n n n 0.5 n 1 n [8] GB DeST C n Q S 7 p G = CA d 15 ρ ρ S = ( CA) d A DeST C d Cd [~4] C 0.65 C 0.8 [8] Per Heiselberg d C 1 [5] d d

14 AchakjiTamura [8] 17 Ae 0.6 S G = Ae 0.6 p S = 18 A e Ae As h d A e Ae = As(0.089 h)( d) Ae = As(0.083 h)( d) d 01 /m DeST As h d b [6] DeST S S S 9( g ρ ) ( WC ) ρ = 8 d mg a 1/3 ( G ) b ( g ρ ) 8 ( ) Hg ρ sign 9 = b 4/3 Gb Gb WCd ρm 19 1/3 0 W, H C d ρ m ρ G a, Gb G = G + G 7 a b

15 p p p= Sa Ga Ga p= Sb Gb Gb DeST Hensen onion DeST onion sequential DeST 15 W/m m 40 mm

16 7 1 m /W/m K h :00 7: h / = > A B h / = > A B h / = >

17 A B h h h h A 9 B

18 m1m 4mm DeST /mm /mm

19 /m p = 5 10 G G m /h Pa

20 13 14 (m 3 /h) p G G 8 = (m 3 /h)

21 (Pa) p = G G η = G G

22 10 h h (m 3 /h) (Pa) m 3 /h

23 (kwh) James W Axley. Residential passive ventilation systems: evaluation and design. AIVC Technical Note ,0(3) 3., 004,34(9) (4) 5 Musser A M. Multizone modeling as an indoor air quality design tool. Health Building, 000() :455~460 6 Annex a, COMIS 3.0 with IISiBat User Manual, 31st October 1997, IEAECBCS Annex 3, Multizone Air Flow Modelling 7 Helmut E Feustel. COMIS An International Multizone Air-Flow and Contaminant Transport - 3 -

24 Model, LBNL-418 8Dols W S, Walton G N.. CONTAMW 1.0 User Mannual. NISTIR BRE.BREEZE 6.0f User Manual. Building Research Establishment, Watford,UK, Svensson C. The NatVent Programme 1.0 User's Guide. J&W Consulting Engineers, Malmö, Sweden, Balaras C A, Alvarez S. Passport Plus Version.1 User s Manual.University of Athens, Greece, Allard F. Natural Ventilation in Buildings: A Design Handbook. James& James, London, UK, Kendrick J, An overview of combined modelling of heat transport and ai rmovement, AIVC Technical Note 40, Hensen J L M. Modelling coupled heat and airflow: ping pong versus onions. Proceedings of 16th AIVC Conference, 1995, Malcolm Orme.Applicable models for air infiltration and ventilation calculations. AIVC Technical Note 51, Sahlin Per. On the effects of decoupling airflow and heat balance in building simulation models. ASHRAE Trans, 003, 109() Haasa A, Weber A. COMIS v3.1 simulation environment for multizone air flow and pollutant transport modeling. Energy and Buildings, 00 (34): ,,,. DeST 1 DeST, DOE- Engineers Manual. Version. 1A ASHRAE. ASHRAE Handbook Fundamentals001 3, Allard F, Haghighat F.. Airflow through large openings in buildings. Technical Report of IEA/ECB-Annex 0: Air Flow Patterns Within Buildings, CH1015 Lausanne, Switzerland, 199 5Heiselberg Per. Characteristics of airflow from open windows. Building and Environment 001 (36) Allard F, Dorer V B, Feustel H E, et al.fundamentals of the Multizone Air Flow Model - COMIS, AIVC Technical Note 9,

14 建筑环境设计模拟分析软件DeST--辅助商业建筑设计应用实例.doc

14 建筑环境设计模拟分析软件DeST--辅助商业建筑设计应用实例.doc DeST 15 DeST DeST DeST DeST Building environment design simulation software DeST(15): Practical application of the commercial buildings models of DeST By Zhang Ye, Yan Da, Liu Ye and Jiang Yi Abstract