To ventilate a factory building 5 k

To ventilate a factory building 5 kg/s of factory air at a temperature of 27 C is exhausted and an identical flow rate of outdoor air at a temperature of -12 C is introduced to take its place. To recover some of the heat of the exhaust air, heat exchangers are placed in the exhaust and ventilation air ducts

ผลลัพธ์ (เซโซโท) 1:

Ho ventilate fekthering ho haha ​​5 di kg / s ea fektheri moea ka mocheso oa 27 C ke ke khathetse 'me sa tšoanang phalla lebelo la ka ntle moea ka mocheso oa -12 C e hlahiswa ho nka sebaka sa oona. Ho hlaphoheloa ba bang ba mocheso oa ho qeta monono moea, phapanyetsano ea mocheso o ba kenngoa ka le ho qeta monono le ventilation moea ducts