| We hear a lot about air conditioner
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| | exercise?the occupants. It takes a lot to
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| sizing, whenever we make the important
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| | cool a town hall full of people, doesn't
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| choice of purchasing, or installing one.
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| | it? Oh yes, we generate heat.Square feet
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| What does the word sizing really mean?Air
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| | method?You might have heard about the
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| conditioners are designed for heat
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| | square feet method in air conditioner
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| removal, or addition (if heat pump is
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| | sizing. In fact, it is used often by many
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| included in the single package).
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| | contractors, that we sometimes use it
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| Therefore, the "size" of an AC, will be
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| | arbitrarily. This method have been
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| specified in terms of heat removal, or
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| | generalised, and simplified by
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| addition capability.Units that we use
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| | contractors, from sizing many ACs.The
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| for air conditioner sizing, are BTU/hr
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| | most common relationship is, "1 ton for
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| (British Thermal Units per hour), Ton,
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| | every 500 square feet of floor area".
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| and Watts. Some countries utilise one
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| | This method might work for a contractor,
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| unit, more than the others, in air
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| | working in a small area, with similar
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| conditioner sizing.It is excellent if you
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| | type of houses or buildings,
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| can remember the relationship between BTU
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| | and similar wall material.But, the
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| hr, Ton, and Watts. You can quickly gauge
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| | relationship will not work, if you change
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| the AC size, in case if your friends use
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| | the wall construction type, or if you
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| units - that are unfamiliar to you;1 ton
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| | move into a different area, with
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| is equivalent to 12,000 BTU/hr.
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| | different climate. Simply said, this
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| And,12,000 BTU/hr is equivalent to 3,516
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| | method of air conditioner sizing will
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| Watts - or 3.516 kW (kilo-Watts).Concept
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| | only work for a confined group of
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| and fundamental of air conditioner
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| | building, in a given area.However, this
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| sizingIt is based on heat gain, and/or
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| | is method is reasonably useful for
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| losses in a building. It is obvious that
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| | installing window, small split, or
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| you will need to remove the amount of
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| | portable air conditioners.Manual JNow,
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| heat gain into your house - if it is hot
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| | this is the way we should do air
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| outside. Similarly, you'll need to add in
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| | conditioner sizing. Manual J is a
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| the heat loss from your house - if
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| | database, with methodologies, formulas
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| outside temperature is cold.In short,
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| | and guide for sizing and AC. This manual
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| heat gain and loss, must be equally
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| | has been developed by ACCA (Air
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| balanced by heat removal, and addition,
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| | Conditioning Contractors of America) -
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| to get the desired room comfort that we
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| | with regular reviews.It will provide you
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| want.What determines the amount of heat
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| | with necessary data for heat gain and
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| removal and/or addition that we want?It
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| | heat loss calculations. Wall
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| is determined by,the temperature
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| | construction, building orientation,
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| difference between outside temperature,
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| | infiltration, shading, number of
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| and our desired temperature. It is common
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| | occupants, the temperature you would like
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| sense that if you want a cool room, in a
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| | to set, outside temperatures, are among
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| very hot climate, you'll need to remove a
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| | the most important values it will look
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| lot of heat. On the other hand, it does
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| | for, for proper air conditioner
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| not take much to maintain a cool room, on
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| | sizing.This is indeed, an extensive
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| a mild daythe construction material, and
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| | manual, which is used by certified and
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| arrangement of your building. Let's say,
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| | experienced air conditioning
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| that you have two identical houses. One
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| | contractors.Manual J is just a tool. The
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| is build out of glass, and the other out
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| | important things are, the values that are
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| of brick, and well insulated.Of course
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| | put in it. If we put in accurate values,
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| the one built with glass would require
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| | then our results will be come accurate.
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| much more heat addition, or removal,
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| | Otherwise, it's not going to help
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| compared to the other - given a same
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| | much.What are amongst the important
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| day.Two identical house, with different
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| | information, you should have for air
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| orientation with respect to the direction
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| | conditioner sizing using Manual J? These
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| of sun rise and fall, will also influence
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| | are,required temperature range within
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| the air conditioner sizingthe surface
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| | your space,approximate temperature
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| area of the walls. The larger the surface
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| | distribution within your area, to find
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| area - the more heat that can loose, or
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| | out the number of months you have winter,
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| gain through it. Hence, effects the AC
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| | summer, and mild weathers,wall surface
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| size that you would needinfiltration
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| | area and material. Window surface
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| plays a part in determining our air
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| | area,any tinted window? Any insulated
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| conditioner sizing. Door gaps, cracked
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| | space?how many person is going to live
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| windows, chimneys - are the "doorways"
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| | within each space?what are the activities
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| for air to enter from outside, into your
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| | carried out throughout any day? How much
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| living space. Only you know how
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| | cooking? How much of hot water
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| frustrating it can get, to feel a draft
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| | utilisation?orientation of your building,
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| of chill, or hot air from
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| | with respect to the sun's rise and fall
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| outsideactivities and other equipment
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| | direction, and,sources of
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| within a building. Cooking? Hot bath? Is
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| | infiltrationPart II or air conditioner
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| it a gymnasium with a lot of intense
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| | sizing is coming soon...
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