ES compressors

Sound power levels (one-third octave band) and sound pressure levels

The measurements were taken with the refrigerant R134a (except ESH743Y: refrigerant R407C) at an operating frequency of 50 Hz and with a suction gas temperature of 20°C.
The calculated sound pressure level in the last column refers to free field conditions with hemispherical sound propagation at a distance of 1 m.
The tolerance for all specifications is +/- 2 dB(A).
For the measured quantities and their units: Introduction

Sound power and sound pressure levels for scroll compressors of series ESH
to: evaporation temperature, tc: condensing temperature





Compressor




to/tc in °C

Sound power level in dB(A) at different frequencies (one-third octave band)

Sound pressure level in dB(A)

25 Hz

31.5 Hz

40 Hz

50 Hz

63 Hz

80 Hz

100 Hz

125 Hz

160 Hz

200 Hz

250 Hz

315 Hz

400 Hz

500 Hz

630 Hz

800 Hz

1000 Hz

1250 Hz

1600 Hz

2000 Hz

2500 Hz

3150 Hz

4000 Hz

5000 Hz

6300 Hz

8000 Hz

10000 Hz

ESH725

+5/+50

17.4

15.8

14.8

29.2

17.6

17.8

27.7

28.5

23.8

32.2

35.5

43.3

44.9

54.3

59.0

62.2

65.0

59.7

61.1

59.2

60.1

60.3

57.9

50.1

49.0

46.5

41.1

62.8

-10/+45

14.7

13.9

20.4

32.3

11.2

19.0

24.1

18.9

30.6

33.1

34.9

44.8

45.6

53.2

62.1

61.6

66.5

64.9

63.3

62.9

65.0

62.8

59.2

57.3

54.5

49.3

43.9

65.4

ESH730

+5/+50

15.9

18.2

18.5

29.5

5.7

19.6

27.2

25.4

25.1

25.5

33.7

42.1

45.1

51.8

58.7

61.8

63.8

61.1

61.9

61.8

63.2

61.1

58.0

52.6

51.8

46.9

40.4

63.3

-10/+45

18.7

17.5

16.9

39.6

25.2

24.2

43.8

35.3

50.2

38.2

29.7

43.6

49.5

51.4

63.0

62.1

65.8

64.2

65.1

63.4

65.1

64.6

59.9

57.3

56.6

50.8

44.8

65.8

ESH736

+5/+50

12.1

17.2

15.1

30.2

6.2

16.4

28.2

23.5

22.6

32.9

33.7

40.0

45.0

50.6

58.0

61.4

62.8

60.0

60.5

61.2

64.7

60.3

58.8

50.5

49.0

42.6

39.5

63.0

-10/+45

13.7

14.0

10.5

22.9

17.6

20.9

15.8

25.9

34.2

35.1

31.0

43.1

41.1

52.4

62.5

61.8

65.0

64.1

63.3

63.1

65.3

62.3

60.2

58.9

55.2

48.0

42.7

65.2

ESH743

+5/+50

23.7

21.6

17.0

39.8

27.5

24.8

38.2

32.0

42.2

47.6

43.7

53.5

57.4

66.5

65.5

63.1

63.1

60.5

61.8

67.2

61.8

60.8

59.8

59.4

54.9

47.6

41.7

66.1

-10/+45

25.9

27.5

23.5

34.6

22.3

19.1

38.5

31.3

35.6

49.5

38.3

48.3

55.1

64.2

65.1

62.0

64.9

60.4

66.1

68.4

66.3

63.8

62.0

60.3

56.5

51.3

44.4

67.2