REFRIGERATION
SUBMITTED BY: KEVIN BRENDAN P. BANTATUA
SUBMITTED TO: ENGR. MOSQUERA
Product load
Above freezing: 3.22 kJ/kg °C
Latent Heat: 247 kJ/kg
Below freezing: 1.59 kJ/kg °C
Entering temp : -4°C
Inside temp: -17 °C
Mass of the new product daily: 875 kg ( half of the total capacity)
Above freezing
𝑄𝑠𝑎𝑓 = 𝑚 ∗ 𝐶𝑝 ∗ ∆𝑇 36000
(875)(3.22)(-4-(-17))/3600
𝑄𝑠𝑎𝑓=10.17 kwh/d
Latent Heat
𝑄𝐿 = 𝒎 ∗ 𝒒𝑳 𝟑 𝟔𝟎0
875(247)/3600
𝑄𝐿=60.03 kwh/d
Below freezing point
𝑸𝑺𝑩𝑭 = 𝒎 ∗ 𝒄𝒑 ∗ ∆𝑻/𝟑𝟔𝟎0
(875)(1.59)(-4-(-17))/3600
𝑸𝑺𝑩𝑭 =5.02 kwh/d
Total product load:
10.17+60.03+5.02=75.22 kwh/d