The article deals with a comparative analysis of CHP operational efficiency in various working modes before and after the absorption heat pumps installation. The calculation was performed using a mathematical model of the extraction turbine PT-80/100-130/13. Absorption heat pumps of LLC "OKB Teplosibmash" were used as AHP models for the analysis. The most effective way of absorption lithiumbromide heat pumps application as a part of the turbine PT-80/100-130/13 turned out to be their usage in a heat-producing mode during a non-heating season with a load of hot water supply. For this mode the dependence of the turbine heat efficiency on the heat load of the external consumer at a given throttle flow was analyzed.

Abstract. Design analysis of absorption heat pumps use for delivery water stage heating levelling-off at ambient air temperature decrease has been reported in the present paper.

Abstract. Nowadays combination of electric, heat and refrigerating energy production (trigeneration) is one of the modern technological solutions for energy efficiency increase and ecological problem solution [1]. Two types of refrigerating machines can be used for both energy and heat production combined: compression aggregates consuming electric energy and absorption aggregates using hot water heat, vapor or other heat conductors. Goal settingThere is a goal of combined determination of tariffs for cold, heat and electric energy in trigeneration system and also purposeful area of different types of refrigerating machines use.There are methods of expenses division for three types of products in the system of trigeneration developed on the basis of Ginter's triangle in the present work [2]. It allows calculating cost of refrigerating products developed in compression and absorption types of machines depending on coefficient of expenses distribution between heat and electric energy at thermal power plant and also determine economically efficient area of application of these types of machines. Methods of expenses distribution for heat and electric energy production according to Ginter's trianglePeculiarities of cost determination and formation of tariffs at thermal power plant producing two kinds of energy -heat and electric are presented in [2,3]. As a basic method there is one offered by the authors according to which expenses for electric energy and heat production can be distributed between two kinds of produce in any way, but as the sum of expenses does not change because of it, the results of all possible variants of distribution are on one line (Picture 1, line ST) -'Ginter's triangle'.

Abstract. Two-dimensional dynamic programming algorithm for distribution of loads between the controlled heat electropower station (HES) extractions is developed. Main recurrent correlations of sequential optimization process by using modified Bellman criterion are presented. Results of program complex implementation are shown.

Abstract. The article deals with a comparative analysis of the efficiency of a two-stage line installation in a heating turbine before and after the inclusion of absorption heat pumps into its scheme with a decrease in the outside air temperature. The research shows the dependence of the efficiency of the line installation on its heat load while using AHP in its scheme, as well as on the heat conversion factor of the absorption heat pumps.