SU932146A1 - Power refrigeration unit - Google Patents

Description

one

The invention relates to power plant engineering and can be used to autonomously provide consumers with electrical energy and cold at the same time with increased demands on the reliability of the power system.

The energetic refrigerating unit containing a forward cycle circuit is known, in which a heat exchanger, a high-temperature heat source and a power turbine are installed in series with a reverse cycle circuit with a refrigerator, a throttle valve and a refrigerator installed in it, and the outlines have a common area in which compressor ll.

A disadvantage of the known energy cooling unit is the presence of a direct cycle heat removal refrigerator and a reverse cycle regenerative heat exchanger, which complicates the heat removal subsystem in the energy cooling unit and reduces its structural reliability.

The purpose of the invention is to increase reliability.

This goal is achieved by

 5 that in the energy cooling installation in the common area of the circuits there is additionally installed an intercycle heat exchanger of the mixing type, connected to the outputs

to from the refrigerator and the heat exchanger, and the outlet from the compressor is directly connected to the refrigerator of the reverse loop circuit.

Fig. 1 shows a structural 15 flow diagram of an energy cooling unit; Fig. 2 - its conjugate cycles in the diagram (T-S).

Claims (2)

The installation contains a high-temperature heat source 1 (gas generator 20, a nuclear reactor, a solar radiation receiver-concentrator system, etc.), a power turbine 2, a heat exchanger 3, a mixing type cycle compressor, a compressor 5, a refrigerator 6, a throttle valve 7, a refrigerator 8 and generator 9 of electric current. The installation works as follows. The working fluid heated due to the supply of heat (thermal power Q,) from the high-temperature heat source 1 to the highest temperature of the direct cycle T goes to the power turbine 2, where it expands, gives a part of the enthalpy in the form of external work (process a - b) Then the working fluid enters the hot shoulder of the heat exchanger 3 where in the isobaric process b- C heat capacity Qp is diverted to the flow directing to the high-temperature heat source 1. Then the working fluid enters the entrance to the inter-cycle heat exchanger A, where see shiva flow stream from the refrigerator 8, lowers its temperature to the lowest temperature T (isobaric process Cd) From the inter-cyclic heat exchanger k, the total flow of the working fluid enters the co-collector 5, where, compressing, it increases its pressure to a higher pressure of the direct cycle (process CZ-e) - At the same time, part of the working fluid from the intermediate stage of the compressor 5, is compressed to the optimum pressure in the reverse cycle (process c1 - tf) is retracted into the contour of the reverse cycle. From the compressor discharge pipe 5, the working fluid circulating in the direct cycle circuit is first heated in the cold shoulder of the heat exchanger 3 (e-1 isobaric process) and then high-temperature heat source 1 (i-a isobaric process). Thus, the direct cycle of converting heat to mechanical energy is closed. Another part of the working fluid circulating in the loop of the reverse cycle, from the intermediate stage of the compressor 5 enters the refrigerator 6, where, cooled by isobaric cooling of the heat power Q2 to the environment, it lowers its temperature to T, it condenses (process) and the liquid state enters the throttle valve 7, in which it is throttled by lowering the temperature to the value of T (isenthal process | c- 2.). Then in the refrigerator 8 heat Q from the cooled (thermostatted) objects (isobaric-isothermal process b) is supplied to the working medium. Next, the working fluid in the inter-cycle recuperator C is supplied with heat O. from the working fluid circulating in the forward cycle circuit (n-d isothermal process), after which the working fluid enters the compressor 5. Thus, the reverse cycle closes. As a result, the unit generates electrical energy (due to the withdrawal of external work Lnc to the drive of the electric current generator 9) and cold. The economic efficiency of the invention lies in the localization of the process of heat removal to the environment only in the loop of the reverse cycle. The consequence of this is the elimination of the direct cycle heat removal cooler, which, in turn, makes it possible to increase the structural reliability of the energy refrigeration unit. The invention includes an energy cooling installation comprising a direct loop circuit in which a heat exchanger, a high-temperature heat source and a power turbine are installed in series, and a reverse loop loop with a series-mounted refrigerator, throttle valve and a refrigerator, and the outlines have a common area in which a compressor, characterized in that, in order to increase reliability, an inter-cycle heat exchanger is additionally installed in front of the compressor in a common area of the circuits ,, first type connected to outputs of the refrigerator and the heat exchanger, and the outlet of the compressor directly connected to the reverse cycle refrigerator circuit. Sources of information taken into account during the examination 1. V. Chikovani. et al. Analysis of a heat and power plant for the simultaneous generation of electrical energy and cold. - Lime USSR Academy of Sciences. Energy and Transport, Science -1979, 5, p. 116. Qi Lgh . ev uh l f t1 Sf e .421, / MIK / NJ / f g / b FIG.