cooling

Today's climate changes caused by anthropogenic factors are occurring according to a dramatic scenario. One of the consequences is the urban heat island effect (UHI). It is caused by the accumulation of heat by urban development. Living in the central part of the city has a number of advantages and is more environmentally friendly comparing with suburbs living. However, city centers are gradually becoming less appropriate for human living. One of the main reasons is the UHI effect. It intensify unfovarable environmental conditions, especially during the hot season.

Heat-mass exchange processes during regenerated activated carbon drying was studied to determine the minimum height of heat-mass exchange zone and termination time of hot heating agent supply based on criterion equations and heat balance calculations. The heating agent temperature changes with time and the adsorbent bed height, as well as the time of moisture content change and drying rate were studied experimentally. Minimum height of a wet material layer ensuring rational use of the heating agent was determined.

The paper deals with the cooling approaches and aims at using solutions for the energy efficient and economically viable high density computing system construction and usage. Power consumption of the standalone high density computing systems and supercomputing clusters with different types of cooling has been considered and their characteristics have been estimated. The influence on the overall budget of the system construction and exploitation for 5 years of life time has been analyzed.

In this article yields and sequence of crystallization of salts during cooling degreeal partially evaporated solution Каlush tailings were studied. Installed cooling temperature regimes which will provide obtaining sodium chloride, potassium-magnesium fertilizer, epsomite etc. Досліджено виходи і послідовність кристалізації солей під час ступеневого охолодження частково випаруваних розчинів Калуського хвостосховища. Визначено температурні режими охолодження, які забезпечать одержання натрію хлориду, калійно-магнієвого добрива, епсоміту тощо.