p = p + p pv = wrt = 287.1 j/kg.k (for air) p a p s 0.425 0 exam... · 2017-01-13 · latent...

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PT = Pw + Pa PV = wRT Rw = 461.5 J/kg.K (for water vapour) Ra = 287.1 J/kg.K (for air) Pw = 0.622+ W = = 0.622 Latent (kJ/kg) = W (2500 + 1.86t) Sensible (kJ/kg) = 1.005t M = W = M (Pw1 – Pw2)A Pw = Ps x RH Mc = 1 = 1 1 1 + 1 2 + … = R1 + R2 +… RH = x 100 = Dubois Equation A = 0.2024m 0.425 h 0.725 Energy = Power x Time °C + 273 = K C = 1 = = 1 + 2 + 3 +⋯+ = 1 Ein = ∝It Eout = εσT 4 = √ 1 + 2 4 = ; = = = 1−2 = 1 ( 1 4 2 4 ) ℎ = 1 1 1 + 1 2 −1

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PT = Pw + Pa PV = wRT Rw = 461.5 J/kg.K (for water vapour) Ra = 287.1 J/kg.K (for air)

Pw = 𝑃𝑇𝑊

0.622+𝑊 W =

𝑤𝑤

𝑤𝑎=

0.622𝑃𝑤

𝑃𝑇−𝑃𝑤

Latent (kJ/kg) = W (2500 + 1.86t) Sensible (kJ/kg) = 1.005t

M = 𝜇

𝑙 W = M (Pw1 – Pw2)𝜃A

Pw = Ps x RH Mc = 1

𝑅𝑣𝑐 =

11

𝑀1+

1

𝑀2+ …

= R1 + R2 +…

RH = 𝑃𝑤

𝑃𝑠 x 100

∆𝑃𝑤

∆𝑃𝑤 𝑇𝑜𝑡𝑎𝑙=

𝑅𝑣

𝑅𝑣 𝑇𝑜𝑡𝑎𝑙

Dubois Equation

A = 0.2024m0.425h0.725 Energy = Power x Time

°C + 273 = K C = 1

𝑅 =

𝑘

𝑙

𝑅𝑡𝑜𝑡 = 𝑅1 + 𝑅2 + 𝑅3 + ⋯ + 𝑅𝑛 =1

𝑈

Ein = ∝It Eout = εσT4

𝑇 = √𝛼𝐼𝑡

𝜀1𝜎+𝜀2𝜎

4 𝑄 =

𝐴

𝑅∆𝑇𝑡 ; 𝑄 =

𝐴

𝑅𝐻𝐷𝐷

𝑞 =𝐴

𝑅∆𝑇

∆𝑇𝑖

∆𝑇𝑡𝑜𝑡=

𝑅𝑖

𝑅𝑡𝑜𝑡

𝑞1−2 = 𝐹𝐸 ∙ 𝜎𝐴1(𝑇14 − 𝑇2

4) 𝑤ℎ𝑒𝑟𝑒 𝐹𝐸 =1

1𝜀1

+1𝜀2

− 1

𝜎 = 5.67𝑥10−8 𝑄 = 𝐶𝐴 [2

𝜌(𝑝1 − 𝑝2]

1/2

𝑞 = 𝑆𝐶𝑥𝑆𝐻𝐺𝐹𝑥𝐶𝑙 ∓ 𝑈(𝑡𝑖 − 𝑡𝑜) 𝑉𝑧

𝑉𝑔= [

𝑍

𝑍𝑔]

𝛼

𝐺

𝐺𝑔= [

𝑍

𝑍𝑔]

𝛽

𝐺𝑔 = 1.35𝑉𝑔

𝐶𝑝 =𝑝

1/2𝜌𝑉2 𝑝𝑠 = 0.0342ℎ𝑝𝑡(

1

𝑇𝑜−

1

𝑇𝑖)

∆𝑝 = 𝛾𝑝𝑠 = 0.0342𝛾ℎ𝑝𝑡∆𝑇

𝑇𝑖𝑇𝑜 𝛾 = 𝑡ℎ𝑒𝑟𝑚𝑎𝑙 𝑑𝑟𝑎𝑓𝑡 𝑐𝑜𝑒𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑡