Maquinas Térmicas.pdf
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Maquinas térmicas
QH + Wentrada = QL + Wsalida QH - QL = Wsal - Went QH - QL = Wneto, sal.
Refrigeradoras
COPR =
𝑸𝑳 𝑸𝑯−𝑸𝑳 𝟏
COPR = 𝑸𝑯 𝑸𝑳
−𝟏
Wneto de entrada=QH-QL
Bomba de Calor Wneto de salida=QH-QL
COPHP=COPR+1
TRANSFERENCIA DE CALOR
𝑪𝒉 = 𝒎𝒉 ∗ 𝑪𝒑𝒉
𝑸𝒉= 𝑪𝒉 (𝑻𝒉 𝒆𝒏𝒕 − 𝑻𝒉 𝒔𝒂𝒍 )
𝑸 = 𝑼 ∗ 𝑨𝒔 ∗ ∆𝑻𝒎𝒍
𝑸 = [𝒎𝑪𝒑(𝑻𝟐 − 𝑻𝟏 )]
∆𝑻𝒎𝒍 =
∆𝑻𝟏 − ∆𝑻𝟐 𝐥𝐧(∆𝑻𝟏 /∆𝑻𝟐 )
QH + Wentrada = QL + Wsalida QH - QL = Wsal - Went QH - QL = Wneto, sal.
Refrigeradoras
COPR =
𝑸𝑳 𝑸𝑯−𝑸𝑳 𝟏
COPR = 𝑸𝑯 𝑸𝑳
−𝟏
Wneto de entrada=QH-QL
Bomba de Calor Wneto de salida=QH-QL
COPHP=COPR+1
TRANSFERENCIA DE CALOR
𝑪𝒉 = 𝒎𝒉 ∗ 𝑪𝒑𝒉
𝑸𝒉= 𝑪𝒉 (𝑻𝒉 𝒆𝒏𝒕 − 𝑻𝒉 𝒔𝒂𝒍 )
𝑸 = 𝑼 ∗ 𝑨𝒔 ∗ ∆𝑻𝒎𝒍
𝑸 = [𝒎𝑪𝒑(𝑻𝟐 − 𝑻𝟏 )]
∆𝑻𝒎𝒍 =
∆𝑻𝟏 − ∆𝑻𝟐 𝐥𝐧(∆𝑻𝟏 /∆𝑻𝟐 )
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