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EWAD740C-SS
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Daikin EWAD740C-SS [103/304] Part 1 system outline 1 97

Daikin EWADC14C-SS [103/304] Part 1 system outline 1 97

ESIE10-01 General Outline

Part 1 – System Outline 1–97

3

1

4

5

Note: Water inlet and outlet are indicative. Please refer to the machine dimensional diagrams for exact

water connection of the partial recovery exchangers.

Description of the

refrigeration cycle

with partial heat

recovery

The low-temperature refrigerant gas from the evaporator is drawn by the compressor through the

electric motor, cooling it. It is subsequently compressed and during this process, the refrigerant mixes

with the oil from the oil separator.

The high-pressure oil-refrigerant mix is drawn into the high-efficiency oil separator, that separates it.

The oil depositing on the bottom of the separator through pressure difference is sent back to the

compressor while the refrigerant that has been separate from the oil is sent to the partial recovery

exchanger, where it dissipates the heat from post-overheating cooling, warming the water which

travels through the exchanger. On leaving the exchanger, the refrigerant fluid enters the condensation

bank where, by forced ventilation, it is condensed.

The condensed fluid at saturation temperature passes through the subcooling section where it loses

even more heat, increasing cycle efficiency.

The subcooled fluid then passes through the high-efficiency filter dryer. It subsequently passes

through the lamination element, which, by means of a pressure drop, starts the evaporation process.

The result at this point is a low-pressure and low-temperature liquid-gas mixture entering the

evaporator.

When the refrigerant liquid-vapour is uniformly distributed in the direct expansion evaporator tubes,

heat is exchanged with the cooling water, thus reducing the temperature, changing state until complete

evaporation, followed by superheating.

Once it has reached the superheated-vapour state, the refrigerant leaves the evaporator and is once

again taken into the compressor to repeat the cycle.

7 Condensation bank

8 Load valve

9 2-way angle valve

10 Filter dryer

11 Sight glass

12 Solenoid valve

13 Thermostatic expansion valve

14 Non-return valve

15 Electronic expansion valve

16 Water outlet temp. transducer

17 Evaporator

18 Water inlet temp. transducer

19 Low-pressure safety valve

20 Suction valve (optional)

21 Suction gas temp. transducer

22 Suction gas press. transducer

23 High-pressure pressure switch

24 Oil/delivery press. transd.

25 Delivery gas temp. transducer

26 Liquid injection valve

27 Liquid injection mesh filter

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