In modern engineering systems of a klimatizatsiya of buildings three types of thermal pumps are applied: parokompressionny, adsorbtsionny and absorbing. The most widespread type of thermal pumps – parokompressionny.
Classification of parokompressionny thermal pumps: – as the compressor used in TN: spiral, piston, screw, turbokompressorny; – on criterion functions: for heating, for hot water supply, for conditioning and heating; for heating, hot water supply, conditioning; – as a low-temperature source of heat and the heated-up environment: liquid-liquid, air-liquid, air-air, liquid-air; – on an applied working environment (coolant): high-temperature, srednetemperaturny, low-temperature; – on a design: monoblock, Split system; – on an installation site: indoors, outside of a room; – by quantity of steps of compression: one-stage, two-level, multistage; – as a source of low-potential energy: soil, air, water (this classification is the most widespread); – as system of distribution of heat: water (heat-insulated floor, radiators), air (channels of air lines). For various updatings of thermal pumps the following ranges of change of temperatures of environments are characteristic.
Temperature range, 0С
– 25. 20
Air after a rekuperatsiya
– 5. 20
Technical and economic indicators of thermal pumps it is closely connected with characteristics of a source of heat.