SU1364837A1 - Air cooling condenser - Google Patents

Abstract

The invention of: allows to exclude the possibility of steam leakage from the condenser and to ensure the subcooling of the liquid refrigerant. For this, the exhaust manifold is located at an angle to the intake manifold 6 with the formation of a free compartment coil underneath them. The outflow collector is connected to the outlets of the pipes of each coil. In the free compartment, transverse and longitudinal pipes are installed, connected by rolls to one end coil 19, connected to the outlet of the high-flow collector. In the end coil 19, the refrigerant completely condenses and is overcooling. Such a design allows for intensified heat transfer. 6 Il. // yy lgg. lt rtHf C (L 00 00 O chadsgent (jKudnacfm

Description

The invention relates to the field of refrigeration engineering, in particular to air cooled condensers of steam chilling machines.

The purpose of the invention is to prevent steam from escaping from the condenser and, if necessary, to supercool the liquid refrigerant by intensifying heat exchange.

FIG. 1 shows a capacitor, a general view; in fig. 2 - the same, side view; in fig. 3 - the same, with a staggered arrangement of pipes; in fig. 4 is a diagram of increasing the length of parallel hoses along the air flow through two hoses; in fig. 5 - the same, through three hoses; in fig. 6 - condenser with intermediate collector and intermediate hoses.

The condenser contains five parallel coils 1-5 connected to inlet 6 and outlet 7 manifolds. Each of the coils 1-5 is increased in the course of the air, compared with the previous one, by two pipes and two rolls. The exhaust manifold 7 is located in the plane 8, which intersects the transverse 9, 10, etc., and longitudinal 11, 12, and other rows of pipes at the level of the latter along the coolant pipe 13-17 of the transverse rows. The exhaust manifold 7 is connected to an end coil 19, including 10 by means of a pipe 18.

The refrigerant vapor entering the intake manifold 6 is distributed in parallel coils 1, 2, etc. in which they are cooled and condensed. Liquid refrigerant with partial steam content is collected from different parallel coils in the output manifold 7 and then flows through the pipe 18 into the end coil 19, where the refrigerant is concentrated completely and is overcooled. In the end coil 19 due to the reduction of the flow area

15 (in this case, five times) the speed of movement of the refrigerant increases and the efficiency of heat transfer increases. In those cases when a significant overcooling of the liquid refrigerant is required, the overcooling zone may constitute a large proportion of the entire surface, since during single-phase movement of the medium, the heat transfer coefficients are much lower than

25 at refrigerant condensation. In addition, the end coil prevents steam from entering any of the parallel-connected hoses into the output pipeline if their length

30 fish is not quite accurate.

Formulas and inventions An air-cooled condenser of various cross-sectional tubes and pro-jg pipes containing inlet and outlet longitudinal rows located under collectors and connected to them by parallel rows of coils in the form of straight ribbed pipes connected by cashed pipes 13- 17 parallel coils. The end coil tubes are connected to one another by followers, with the coils of adjacent p

The refrigerant vapor entering the intake manifold 6 is distributed in parallel coils 1, 2, etc. in which they are cooled and condensed. Liquid refrigerant with partial steam content is collected from different parallel coils in the output manifold 7 and then flows through the pipe 18 into the end coil 19, where the refrigerant is concentrated completely and is overcooled. In the end coil 19 due to the reduction of the flow area

(in this case, five times) the speed of the refrigerant increases and the efficiency of heat transfer increases. In those cases when a considerable overcooling of the liquid refrigerant is required, the overcooling zone may constitute a large proportion of the entire surface, since at single-phase movement of the medium, the heat transfer coefficients are much lower than

during refrigerant condensation. In addition, the end coil prevents steam from entering any of the parallel-connected hoses into the output pipeline if their length

The fish is not quite accurate.

Formulas and inventions Condenser air coolers, and coils adjacent p

flax, starting from the first pipe 20 of the first Dov have a different length, increasing the transverse row along the air course and ending with the last pipe 21 of the first along the transverse row along the air. The end coil 19 in the condenser (Fig. 1 and 2) includes 20 pipes. The connection of the pipes in the end coil during the transition from one longitudinal row 11 to another row 12 is carried out using transverse steps 22 arranged in directions, roll 23, and from one transverse row to another, rolls 24 located in directions longitudinal steps 25.

The capacitor works as follows.

Downstream of the air flow into two pipes and two rolls, characterized in that, in order to prevent steam from escaping from the condenser and to provide, if necessary, subcooling of the liquid refrigerant by intensifying heat exchange, the exhaust manifold is positioned under the coal to the intake to form under

It has a coil-free compartment and is connected directly to the pipe outlets of each coil, and in the free compartment there are additional transverse and longitudinal rows of pipes connected by rolls to an end coil connected to the outlet of the exhaust manifold.

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Claims (1)

Claim An air-cooled condenser containing intake and exhaust manifolds and coils connected to them in parallel rows in the form of straight finned tubes connected by kalach, moreover, the coils of adjacent rows have different lengths, increasing along the air flow by two pipes and two kalach, characterized in that , in order to prevent leakage of steam from the condenser and to provide, if necessary, supercooling of liquid refrigerant by intensifying heat transfer, the exhaust manifold is located at an angle to the inlet with mation under 5θnim free coil compartment and is connected directly to the outputs of each pipe coil, and the free compartment installed additional transverse and longitudinal rows of tubes connected in opine kalatches coil terminal connected to the output of the exhaust manifold. air ^ Refrigerant (steam) The refrigerant (liquid) of FIG. 2 I I ί ! I I I Fig.Z FIG. 5 FIG. IN