The adequate mathematical model of diesel locomotive cooling device is offered. The solution of this model is received by numerical method of calculation. The optimization criterion and the method of accounting the influence of aerodynamics on heat exchange process are offered.
"The analysis of the energy demand for heating and cooling of the house built on the basis of the modernised Canadian wood-frame construction". This study shows calculation of demand for power needed for heating and cooling of a house built in compliance with modernised Canadian wood-frame construction technology and by modern solutions of construction details connections. Conducted calculations prove that the passive house built of wood-based materials enables to achieve the highest efficiency of thermal power demand for heating the building.