1.5 ton ac price in Bangladesh

Air Conditioning and Ventilation in Houses

Air first-rate is a fundamental detail for our nicely-being and that of our family contributors, whether or not at domestic, directly at work or in enjoyment locations.


It's miles vital to have ok air-con and airflow structures that assure absolute properly-being in it. Ok, 1.5 ac price in Bangladesh and/or herbal or pressured ventilation is vital to obtain the thermal nicely-being of humans, that is, the “inner situations of temperature, humidity and air speed set up via regulation that is considered to produce a feeling of properly-being, ok and sufficient, for folks who occupy it. But, this ought to be accomplished in an accountable manner, energetically speaking, for the reason that aircon represents 14% of the entire power used in houses.
What function does ventilation play in homes?

Ventilation is typically described in the manner users update the ambient air of a room or room. The air is taken into consideration stale due to loss of purity or as it has an insufficient temperature or immoderate humidity and is replaced by outdoor air, which has higher traits.

Ventilation functions

•    The ventilation of the house solves one of the fundamental vital functions such as the supply of oxygen vital for respiration and the manipulate of the warmth this is produced. But other than being important for breathing, the airflow of the house also gives consolation situations and improves air first-rate, in which the humidity may be faded or improved. And however, it also allows diluting unwanted odours.
•    The shortage of true airflow alters the shortage of oxygen that does not mean a high danger, but this is one of the foremost factors of pain and feasible harm to the health of the inhabitants of the residence. In lots of instances the steam, this is due to the usage of the lavatories, the kitchen, the stoves or the showers can make contributions to those issues.
•    Then again, the ventilation of the residence may be very essential to improve the indoor climatic situations and on this manner prevent the appearance of mould in the rooms, which typically occurs because of the condensation of water.

The importance of true airflow

Ventilation is also of the utmost significance for the one's websites in which industrial methods are carried out and in installations with machines, considering that on this way it is viable to manipulate the warmth, toxicity or potential explosiveness of the environment:
•    Renew the air necessary for breathing
•    Keep away from the accumulation of odours or poisonous gases
•    Ensure the proper functioning of combustion devices
•    Keep away from housing deterioration

Forms of airflow

To assure the proper ventilation of the rooms or buildings, there are distinct sorts of ventilation and that may be catalogued as follows:

•    Pressured airflow
It's far the only this is carried out by artificially developing depressions or overpressures in air distribution ducts or constructing areas. These may be created through extractors, enthusiasts, air coping with devices (UTAs) or other mechanically actuated elements.

•    Natural airflow
It is the only that is done with the aid of the appropriate place of surfaces, passages or conduits taking advantage of the depressions or overpressures created within the building using wind, humidity, solar, thermal convection of the air or every other phenomenon without it is essential to offer electricity to the system in form of mechanical work.

•    Selective airflow
It is a bioclimatic building layout technique proposed via Givoni while the moisture content material of the air is low and if techniques inclusive of cross airflow are carried out, the constructing might have a hygrothermal discomfort. This is because of the truth that circulation of air with a low moisture content on the skin reasons its desiccation with the ensuing discomfort.
In these instances, the selective airflow in the house takes gain of the enthalpy distinction between the day and night time air, favouring the cooling of the indoor spaces of the buildings.


This implies that in the day the airflow of the premises may be minimum and should be umbrellas (shaded) decreasing as an awful lot as feasible the prevalence of direct and diffuse solar radiation. With this, you may maintain the premises fresh.

•    Infiltration
It's miles the entry of air from outdoor utilizing phenomena or in principle out of control makes use of, but that effect or are assumed for ventilation, for example, gaps in doors or diffusion through positive surfaces …….

What differentiates compelled mechanical ventilation from natural?

The cause of both varieties of airflow is exactly the equal: to ventilate or preserve clean air in a constructing and purify it as wanted. But, there may be a brilliant distinction among the 2 at the structural stage, on account that pressured ventilation is acquired with a gadget that consumes electrical electricity and that in maximum cases ought to be established in buildings due to the way they're constructed.

Whilst within the case of natural airflow, it's far obtained obviously as the call implies, the usage of different sources and taking benefit of the building's creation version, to obtain pure air within it.

Next, we will carry out the calculation for an example home it's for a house with three or extra bedrooms. A waft of dry premises: dwelling room, dining room and bedrooms:

•    Main bedroom: eight l / SX 1 bedrooms = 8 l / s.
•    Relaxation of bedrooms: four l / SX 2 bedrooms = eight l / s.
•    Living rooms and eating rooms: 10 l / SX 1 residing room = 10 l / s.
•    Total flow dry premises: 26 l / s

The float of wet rooms: Kitchens, bathrooms and lavatories

•    Minimal in general = 33 l / s.
•    Minimal in keeping with room = 8 l / SX 2 bathrooms + eight l / SX 1 kitchen = 24 l / s <33 l / s.
•    TOTAL FLOW Wet locations: 33 l / s> 26 l / s (from dry premises)


General ventilation device waft

When referring to this sort of go with the flow, it will be vital to calculate 33 l / s either for admission or air extraction. For the calculation of the renovations hour, we multiply via 3.6 for the trade of units (3600s / 1000l = m³ / h) and divide with the aid of the extent of the house in m³. As an instance, if the residence has a volume of 252.50 m³ (101 m²x2.5m): 33 l / SX 3.6: 252.50 = zero.Forty-seven renovations/hour.

With these facts, we realize what fan or fans we want, in case of desiring forced airflow. Or if we intend to design the house to have herbal airflow, we need to consider it whilst making the distribution and putting the air inlet and outlet openings, to choose that herbal air circulation.

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