Lecturer prof. Iskandarova GT

1. Hygienic requirements for heating, 2. Comparative evaluation of sanitary heating systems, radiant systems and air heating systems, their features. 3. Hygienic requirements for ventilation. 4. Natural and mechanical ventilation. 5. Air conditioning.

1. maintaining an internal temperature of premises from 17 to 220, the temperature of wards from 18 to 220; 2. The stability of the internal temperature and humidity diurnal temperature variations of ± 20 and a relative humidity of 40-60%; 3. The uniformity of temperature fluctuations in the horizontal ± 10 and vertically not more than 2,5-30;

4. mild temperatures on the surface of heating elements, excluding excessive infrared radiation emission of harmful to health or foul- smelling gases; 5. exception of indoor air pollution by smoke and ash; 6. Easy to use; 7. accessibility and ease of maintenance and cleaning of the main elements of the system; 8. Security in fire extinguishing.

Local heating is common in rural areas. 1. local; 2. central

Local heating devices can be classified as having a spread of electric and gas heating.

High temperature heat donating surface. One type of local heating water heating system is quite acceptable hygienic hand.

There are two main types of central heating: To include convective system of water, steam and air heating. Radiant heating systems are classified by the location of the heating panels - in the ceiling, walls and floor. 1) convective 2)radiant

In central water heating systems, which are more common in other modern construction. When the central heating source of education and place of heat accumulation are special boilers installed boilers. Coolants, respectively, serve hot water and steam.

Air heating Air heating have recently put into practice for reasons of economy housing (reduction of metal consumption for radiators) and hygiene (implementing much-needed permanent ventilation in modern small apartments).

Radiant (radiation, panel), heating to create the desired temperature of indoor air is used surface fences, heated by a heat transfer medium: water, steam, air, electricity. Radiant heating is better than any other heating system ensures uniform temperature in the room air vertically and horizontally with periods of no more than 20C.

Properly organized ventilation in buildings is one of the main conditions for air pollution abatement facilities. Exceptionally great importance for the preservation of buildings ventilation and prevent the development of moisture in them.

1. Maintain a comfortable temperature and humidity; 2. Perhaps a complete flushing of the entire air space of premises served, avoiding strong and unpleasant air velocities; 3. Warning accumulation of odors and different gas and vapor contaminants in the air; 4. Year-round uninterrupted operation; 5. Low overall details, quiet action ease repair and cleaning; 6. Security.

Natural ventilation in residential apartments and rooms is almost entirely carried out through the gap and density in the window and door openings, as well as opening the vents, transoms or all windows and doors. By the amount of air mainly influenced by meteorological factors - the outdoor temperature and indoor air, wind strength and direction.

Ventilation system can be: Exhaust Blowing Supply and exhaust

In the process of health surveillance is often necessary project expertise of heating, which can be either an independent project or a section of the residential and public buildings.

1. The selection of the heating system; 2. Sufficiency of surface heaters. 3. Evaluate device designed heating system. 4. Optionally check the adequacy of the area heaters. 5. Particular attention is paid to the elucidation of projected sections in the radiators of different premises.

- Total heat loss of the premises; - The area of individual protections; - The calculated temperature of the outside air; - Coefficient of resistance of the fence.

1. on the orientation of the fences on either side of the world: north, north-east and east - 10%; Northwest - 8%; southwest, west, south-east - 5%; 2. the influence of the wind - 5%; 3. at the height of the room for each 1m over 4m total heat loss should be increased by 2%.

1) to establish the feasibility of selecting the ventilation system; 2) verify the adequacy of ventilation; 3) determine whether the quality of the air supply sanitary requirements; 4) evaluate the correctness of the device separate units of the ventilation system; 5) to find out the rationality of the proposed mode of operation of ventilation facilities.

THANK YOU FOR YOUR ATTENTION