Russian Journal of Applied Chemistry, 2010, Vol. 83, No. 9, pp. 1698−1706.
Pleiades Publishing, Ltd., 2010.
Original Russian Text
I.M. Piskun, G.N. Abaev, 2010, published in Khimicheskaya Promyshlennost’, 2010, Vol. 87, No. 4, pp. 194−203.
TECHNOLOGY OF ORGANIC
AND INORGANIC CHEMISTRY
Heat Pump with Working Body: Mixture of Steam and Air
I. M. Piskun and G. N. Abaev
“Naftan” Open Joint Stock Company, Polotsk, Russia
Received May 5, 2010
Abstract—The compression heat pump with working body of a mixture of steam and air was elaborated on the
basis of modernized vacuum compressor DVN-1 and jet device. Possible options of application of the heat pump
on technological plant “Naftan” OJSC and in Housing and Utilities are described. The assessment of efﬁ ciency
and the amortization period at introduction of the considered heat pump are performed.
As is well known, the efﬁ ciency of the energy
utilization and especially low-potential energy becomes
more and more valuable. In the fuel energy balance
of the Republic Belorussia, for example, the share of
import of energy resources is 80%, therefore the search
of efﬁ cient application of energy, in particular low-
potential energy, in to day conditions at the continues
growth of price of the hydrocarbon raw material
becomes the most important task.
One of the directions of the energy saving policy
is the elaboration by the department of the Chemical
Engineering of the Polotsk State University of the
compressor heat pump with available working body: the
mixture of steam and air, made for recuperation of low-
Heat pumps are well known since the 19th century;
they started to have wide practical application in 20–30s
of the20th century in USA and Europe as the component
of the heating system of residential buildings. But
heat pumps are still not widely used on the industrial
scale because highly hazardous substances like Freon,
ammonia, hydrocarbon are used as working body in
Description of the scheme of the pilot installation
of the heat pump. The principal feature of the
proposed heat pump is that the mixture of steam and
air is used as the working body; the jet device is used
as heat exchanger recuperator and independent vacuum-
compressor working together with rotary vane vacuum-
pump. The installation of the heat pump (Fig. 1) is
working in the following way: low-potential energy
source, water at the temperature 30–50°C, is circulating
in plate heat exchanger 6 and is cooled till 25–30°C. The
centrifugal pump 3 provides the circulation of water in
the circuit of the heat pump. In order to cool the “warm”
water cooled in jet device water 2 is transferred to the
heat exchanger 6. Cooling of the water in jet device is
reached at the expense of the evaporation of the liquid
part of the working body.
The jet device is used for the creation of deeper
vacuum in order to increase the content of the amount
of steam in vapors and to increase the speciﬁ c surface of
phase contact between heat carriers.
The gaseous part of the working body (air) is fed to
jet device via ejector. The water goes to the lower part of
the jet device, to gas-liquid layer. At the expense of the
evaporation of the liquid part of the working body the
cooling of the water occurs in the body of the jet device.
The vapors of the working body with temperature
25–30°C go to the inlet of the rotary plate compressor
1 where at compressing they are warmed up to 150–
“Hot” vapors of the working body go from compressor
1 to heat exchanger 4 where they are cooled, partially