Deshko V.I.

Heat and Mass Transfer Characteristics of Air-to-Air Membrane Recuperator During Heating Season

This paper considers issues of heat and mass transfer simulation in cross flow membrane plate heat exchanger in ventilation systems with condensation and frost formation during heating season. Simulation results are presented in the form of distribution of heat and mass transfer coefficients and heat-transfer agents temperature on the heat exchange surface. We present the dependences of critical conditions of frost formation and sensible efficiency adjustment factor on indoor air relative humidity and outside air temperature.

Energy certification of buildings

The paper considers the European approaches to assessment of the buildings’ energy efficiency. We scrutinize their advantages and disadvantages. Specifically, we investigate the feasibility of one of the approaches by employing the example of NTUU "KPI" educational buildings and define principal obstacles that hinder the utilization and can also lead to misinterpretation of the results obtained. We propose possible ways of specification of existing methods and attempt to adapt them to the Ukrainian context.

Structural Analysis of Energy Consumption and Energy Efficiency in Education

The paper studies the structural analysis of the energy consumption facilities in the area of education. The following areas are included: analysis of energy use, specific consumption of energy facilities, as well as identifying factors that influence the energy consumption of higher education institutions. We determine the specific energy consumption using the data on energy consumption, total areas of buildings and the difference between weather conditions of actual and reference years.

The economically expedient thermal defense оf building with different heating sources

In this paper, we consider the heating sources employing the method of cash flow. We propose the function of optimization of cash flow taking into account the thermal protective properties of building envelope, heating system, and energy resources cost change, and also cost change of heat source depending on thermal protective properties of the building envelope. In addition, we anticipate the discounting of cash flow and analyze the expedience of the abovementioned factors.