The paper presents results from numerical modelling of thermal conduction process in
ABAQUS. The computing mesh of the model has been verified. Based on the simulation …

Absorption refrigerators have been used in recent decades for utilization of waste or solar
energy to produce heat or cold for industrial purposes or to condition the microclimate in …

In the last two decades, a significant increase in the share of heat pump systems, used to
maintain the microclimate in residential, public and municipal buildings, has been observed …

There are two main types of power thyristors-rectifier and inverter thyristors used in different
power converters: in induction heating technologies, in DC motor drives, for power supplies …

The refrigeration cycle of a reversible water-to-water heat pump has been investigated at
different operation parameters of a laboratory installation. The investigation has been …

One of the most used ways to achieve nearly-zero energy buildings (nZEB) in relation to
Bulgarian legislation is by the use of air-to-air heat pumps for heating. Specifically for …

An increase in the population of cities and the tendency to form urban agglomerations
inevitably lead to more complex transport, energy and utility infrastructure. Which in turn …

Research of reliability of power semiconductors depends on type of semiconductor,
electrical modes, quality and number of elements, environment condition of operating arias …

The paper presents results from numerical modelling in ABAQUS of heat convection
processes in the ducts of two-stage “water to air” heat exchanger, used as a heat consumer …

ABSTRACT The Sn–Zn eutectic alloys with small addition of Ni were studied experimentally
as part of the ternary Ni–Sn–Zn system. It was found that small amount of Ni in the liquid …