Showing posts with label noise. Show all posts
Showing posts with label noise. Show all posts

Tuesday, 22 February 2011

Duct wrap roll out insulation is a high quality insulation with noise attenuation properties.

Duct wrap roll out insulation is a high quality insulation with noise attenuation properties. It is ideal for ventilation systems, air conditioning, refrigeration equipment, ridged ducting, building application such as walls, ceilings, lofts, loft eaves and many others. Easy to install with minimum mess.

Duct wrap include high density compact fibre glass insulation, with high insulation qualities to stop condensation forming with the added benefit of high acustic attenuated reflective plastic strip braided aluminium outer silver layer. Duct Wrap comes in two size formats, please select your size from top of page.

Key product Data 25mm Roll:

(17Mx1.20Mx0.0025M) with 24Kg/m3 density fiberglass faced on one side with reinforced aluminium facing. Complies with BS476 part7, Class 1

Key product Data 50mm Roll:

(13Mx1.20Mx0.0050M) with 16Kg/m3 density fiberglass faced on one side with reinforced aluminium facing. Complies with BS476 part7, Class 1

Thursday, 17 February 2011

Care for people and the environment. Providing highly efficient, energy-saving air conditioning with Fujitsu S series Multi units

Building air conditioning developed to care for people and the environment
Providing highly efficient, energy-saving operation.
Non-inverter system free of electrical noise emissions.


Features ( Cooling Only & Heat Pump Series )

A high-performance operating system utilising innovative triple high-efficiency compressors and advanced refrigerant flow control technology (Power Balance Technoligy).
The result is superior energy savings and impressively low operating noise.
Capable of connecting up to 13 ( 22.4kW ) or 16 ( 28kW ) indoor units to one outdoor unit.
Employs environmentally friendly R407C refrigerant.
Features ( Heat Recovery Series )

A high-performance operating system utilising innovative triple high-efficiency compressors and advanced refrigerant flow control technology (Power Accumulation Technology).
With heat recoverry operation, cooling and heating can be performed simultaneously and automatically within the same refrigerant system.
This approach provides maximum energy efficencies.
Capable of connecting up to 16 ( 28kW ) indoor units to one outdoor unit.
Employs environmentally friendly R407C refrigerant.

Saturday, 13 November 2010

Air Conditioning Noise Levels (relative loudness of typical noise sources in indoor and outdoor environments)

Sound levels (dB) and relative loudness of typical noise sources in indoor and outdoor environments

dB(A)

Overall Level

Community Noise Levels (Outdoors)

Home and Industry Noise Levels

Subjective Loudness (Relative to 70 dB)

120

Uncomfortably Loud

Military jet aircraft take-off from aircraft carrier with afterburner at 50 ft . . . 130 dB

Oxygen Torch . . . 121 dB

32 times as loud

110

Turbo-fan aircraft at takeoff power at 200 ft . . . 118 dB

Riveting machine . . . 110 dB

Rock band . . . 108 - 114 dB

16 times as loud

100

Very loud

Boeing 707 or DC-8 aircraft at one nautical mile (6080 ft) before landing . . . 106 dB

Jet flyover at 1000 feet . . . 103 dB

Bell J-2A helicopter at 100 ft . . . 100 dB

8 times as loud

90

Boeing 737 or DC-9 aircraft at one nautical mile (6080 ft) before landing . . . 97 dB

Power mower . . . 96 dB

Motorcycle at 25 ft . . . 90 dB

Newspaper press . . . 97 dB

4 times as loud

80

Car wash at 20 ft . . . 89 dB

Propeller plane flyover at 1000 ft . . . 88 dB

Diesel truck 40 mph at 50 ft . . . 84 dB

Diesel train 45 mph at 100 ft . . . 83 dB

Food blender . . . 88 dB

Milling machine . . . 85 dB

Garbage disposal . . . 80 dB

2 times as loud

70

Moderately loud

High urban ambient sound . . . 80 dB

Passenger car 65 mph at 25 ft . . . 77 dB

Freeway at 50 ft from pavement edge 10 a.m. . . . 76 dB

Living room music . . . 76 dB

Radio or TV-audio. vacuum cleaner . . . 70 dB

70 dB(A)

60

Air conditioning unit at 100 ft . . . 60 dB

Cash register at 10 ft . . . 65-70 dB

Electric typewriter at 10 ft . . . 64 dB

Dishwasher (Rinse) at 10 ft . . . 60 dB

Conversation . . . 60 dB

1/2 as loud

50

Quiet

Large transformers at 100 ft . . . 50 dB

1/4 as loud

40

Bird calls . . . 44 dB

Lowest limit of urban ambient sound . . . 40 dB

10

Just audible

0

Threshold of Hearing