| Hygiene of populated places | ISSN: 2707-0441 eISSN: 2707-045X |
Issue 64, 2014 - Pages: 398-409
HYGIENIC ASSESSMENT OF VENTILATION AIR HANDLING UNITS WITH HEAT RECOVERY LOSSNAY, PRODUCTION MITSUBISHI ELECTRIC, ON ACOUSTIC MODE RESIDENTIAL AND PUBLIC BUILDINGS
V.Ya. Akimenko1, P.V. Semashko1
1 STATE INSTITUTION «O.M. MARZIEIEV INSTITUTE OF HYGIENE AND MEDICAL ECOLOGY» NAMSU
ÓÄÊ: 613.164
SUMMÀRY:
Purpose of the study was to assess the sanitary condition of the acoustic residential and office space in the operation in which air handling units with heat recovery Lossnay from Mitsubishi Elec-tric.
Methods: Acoustic calculations of the expected sound levels in rooms with a view of the func-tioning of these systems in Lossnay at different modes of operation with the installation location and distance.
The research results. We prove that admissible under CH ¹ 3077-84, sound levels for sleep-ing rooms (30 dB) when working air handling units Lossnay, achieved only in modes Low and Extra Low (model LGH-15RX5-E, LGH-25RX5- E and LGH-35RX5-E).
It has been established that the expected sound levels in a sleeping room, when operation of the VL-100-E and LGH-40ES-E, equal to 36.7 and 41.2 to 46.2 dB and 50.2 dB, respectively, which does not meet the CH ¹ 3077-84 for sleeping rooms.
It is found that the expected sound levels in offices, at work systems VL-100-E and LGH-40ES-E, meet the requirements of SDS 3.3.6.037-99 "State sanitary norms of industrial noise, ultrasound and infrasound" for office space.
It is proved that the joint work conditioning and air handling units Lossnay increases calculat-ed the expected sound levels approximately 1-3 dBÀ.
Found that when the joint operation of air handling units and air conditioners Lossnay not achieved the recommended level of WHO sound in sleeping quarters (25 dBA).
Methods: Acoustic calculations of the expected sound levels in rooms with a view of the func-tioning of these systems in Lossnay at different modes of operation with the installation location and distance.
The research results. We prove that admissible under CH ¹ 3077-84, sound levels for sleep-ing rooms (30 dB) when working air handling units Lossnay, achieved only in modes Low and Extra Low (model LGH-15RX5-E, LGH-25RX5- E and LGH-35RX5-E).
It has been established that the expected sound levels in a sleeping room, when operation of the VL-100-E and LGH-40ES-E, equal to 36.7 and 41.2 to 46.2 dB and 50.2 dB, respectively, which does not meet the CH ¹ 3077-84 for sleeping rooms.
It is found that the expected sound levels in offices, at work systems VL-100-E and LGH-40ES-E, meet the requirements of SDS 3.3.6.037-99 "State sanitary norms of industrial noise, ultrasound and infrasound" for office space.
It is proved that the joint work conditioning and air handling units Lossnay increases calculat-ed the expected sound levels approximately 1-3 dBÀ.
Found that when the joint operation of air handling units and air conditioners Lossnay not achieved the recommended level of WHO sound in sleeping quarters (25 dBA).