Introduction and Background of the Study

As twenty-four hours clip is get downing to go more and more intolerable. as fans would merely invariably stir the hot gluey air S around. so the research workers ended up in taking this subject. The research workers chose this subject chiefly because of the hot conditions here in the Philippines. The changeless high temperature was the ground this came up to the researchers’ minds. This homemade air conditioner. besides known as the “Swamp Cooler” . can assist take the border off and do a small more endurable. Not merely that. but it’s besides really cheap. easy to do. instead effectual. and can be used over and over once more. Supplying cool air without devouring a batch of electricity. This peculiar design is a low-maintenance version that requires no H2O drainage. It is non merely easy to make. the stuffs that are besides needed to carry on the merchandise are besides inexpensive and easy to happen. which is really sufficient for people to do.

What more could you inquire for?

The research workers aim is to quantify the public presentation and features of the homemade air conditioner. To be able to make this. the research workers conducted a survey about the said merchandise. which is the homemade air conditioner. by doing it themselves with the usage of two fictile tubings. a Cu tubing. a ice chest. zippies and an ordinary electric fan that has already been used. To do the homemade air conditioner. foremost. you should set the Cu tubing in a swirl formation on the forepart or on the dorsum of the fan and to do the tubing certainly attached to the fan. procure them utilizing the zippies. do certain that they are firmly fastened to keep stableness. Second. you insert each terminal of the Cu tubing inside of each two plastic tubings. Third. set ice and H2O inside the ice chest and put the terminal of one plastic tubing on the right corner and put the terminal of the other plastic tubings opposed to the other 1. To acquire the air conditioner working. infix the stopper of the electric fan in a circuit. and that is how you should be able to make the merchandise.

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Statement of the Problem

The research workers would wish to cognize the homemade air conditioner’s capacity or the distance of how much it cools up a room.

In our coevals of today. Global Warming is taking topographic point which causes clime alteration. which causes the cutting of the ozone bed. Global heating is an mean addition in the temperature of the ambiance near the Earth’s surface and in the troposphere. which can lend to alterations in planetary clime forms. Global heating can happen from a assortment of causes. both natural and human induced. In common use. “global warming” frequently refers to the warming that can happen as a consequence of increased emanations of nursery gases from human activities. And due to this “Global Warming” . many people would endure under the sun’s blaze heat. To assist decrease the agony in a more inexpensive and sufficient manner. so the research workers would wish to cognize the homemade air conditioner’s capacity or the distance of how much it cools up and how cold it is.


The researchers’ aim is to achieve both the general and specific aim of the survey and besides the statement of the job.

General Aims

The general aim of the survey is to supply more cognition about this to other people and to the hereafter research workers every bit good and to allow them see the sufficiency that it gives.

Specific Aims

The specific aim of the survey is to quantify the public presentation and features of the homemade air conditioner. to find how much it cools up. to cognize if it can really chill up a room.

Scope and Boundary line

The survey covers the field of analyzing on the capacity and features of the homemade air conditioner. Concentrating chiefly on the public presentation of the said experiment.

Significance of the Study

To the community. it will assist decrease the agony from heat or merely to supply cool air to people in times when the temperature starts t rise and perspiration accumulates. And most of us take the ability to warm our places for granted. but few appreciate the benefits of being able to take unwanted heat during the summer months. When outside air temperatures reach uncomfortable degrees. the coolest temperature we can trust to keep within our places is the same. despite any sum of airing through the usage of conventional fans.

The ground why this survey is important can be explained from three facets. First. this survey investigates the researchers’ perceptual experiences. attitudes. point of views. and their engagement towards this research. Second. the consequences of how the researchers’ better their survey about the sufficiency of a homemade air conditioner. Third. it is hoped that this survey may assist the researchers’ in supplying the information of how they can better the survey.

A homemade and portable air conditioner which answers the demand of chilling in a manner of non destructing the environment. In the adjutant of the declining effects of planetary heating from air conditioning units. and for the demand of chilling machines in the heat of the Sun.

The homemade air conditioner uses inexpensive stuffs that merely needs a little sum of power that can be used in a considerable sum of clip. This experiment is a good replacement for expensive air conditioners that contributes to planetary heating. This experiment can besides assist in salvaging electricity measures.

As you can see in our community today. planetary heating is taking topographic point. Bit by spot the ozone bed is acquiring dilutant and dilutant doing the heat of the Sun to be hotter than the usual. Extreme temperature during summer besides becomes a challenge for everyone. Many places do non hold air conditioning due to the expensive monetary value and for some who has intended to minimise the usage to avoid high electricity measures.

The innovation of homemade air conditioner is a large aid for all as the research workers believe that it can be about 30-50 % cheaper to run as it consumes less power ( if used right ) . The best portion about the homemade air conditioner is its economic feasibleness and will do your proximate conditions ice chest and pleasant to digest summer yearss.

Related Literature

A dehumidifier is typically a family contraption that reduces the degree of humidness in the air. normally for wellness grounds. Humid air can do cast and mold to turn inside places. which pose assorted wellness hazards. Very humid climes or air make some people highly uncomfortable. doing inordinate perspiration that can’t evaporate in the already-moisture-saturated air. It can besides do condensation that can interrupt kiping. or prevent wash from drying exhaustively plenty to forestall moldiness. Higher humidness is besides preferred by most plagues. including apparels moths. fleas. cockroaches. slater and dust touchs. Relative humidness in homes is sooner 30 to 50 per centum.

By their operation. dehumidifiers produce an surplus of H2O which has been removed from the conditioned air. This H2O. normally called condensate in its liquid signifier. must be collected and disposed of. Some dehumidifier designs dispose of extra H2O in a vapour. instead than liquid signifier. Energy efficiency of dehumidification procedures can change widely. Dehumidifiers are besides used in industrial climatic Chamberss. to command comparative humidness within certain suites to remain at degrees conducive to processing of merchandises.

Thermal condensation

These methods rely on pulling air across a thermocline. Since the impregnation vapor force per unit area of H2O lessenings with decreasing temperature. the H2O in the air condenses on the cold surface. and is separated from it.


Mechanical/refrigerative dehumidifiers. the most common type. normally work by pulling moist air over a refrigerated spiral with a little fan. The cold spiral of the infrigidation device condenses the H2O. which is removed. so the air is reheated by the hot spiral. This procedure works most efficaciously with higher ambient temperatures with a high dew point temperature. In cold climes. the procedure is less effectual. They are most effectual at over 45 percent comparative humidness. higher if the air is cold.

Air conditioners

Air conditioners inherently act as dehumidifiers when they chill the air. and therefore there is besides a demand to manage the accrued condensate. Newer high-efficiency window units use the condensed H2O to assist chill the condensation spirals ( warm side ) by vaporizing the H2O into the out-of-door air. while older units merely allowed the H2O to drip outdoors. Central air conditioning units typically need to be connected to a drain. A conventional air conditioner is really similar to a mechanical/refrigerative dehumidifier. Air in a dehumidifier passes over a series of chilling spirals ( the evaporator ) and so over a set of heating spirals ( the capacitor ) . It so goes back into the room as dry air with its temperature elevated. The H2O which condenses on the evaporator in a dehumidifier is disposed of in the drain pan or drain hosiery.

However in an air conditioner. air passes over the chilling spirals ( the evaporator ) and so straight into the room. Spent refrigerant so is pumped by the compressor through a tubing to outside the infinite being cooled. to where the warming spirals ( the capacitor ) are located. The waste heat is transferred to the outside air. which passes over the capacitor spirals and remains outside. The H2O that condenses on the evaporator in an air conditioner is normally routed thorough a drain channel to the exterior of the window. therefore taking extracted H2O from the learned infinite.


Electronic dehumidifiers use a Peltier heat pump to bring forth a cool surface for distilling the H2O vapour from the air. The design is simpler as there are no traveling parts. and has the benefit of being really quiet compared to a dehumidifier with a mechanical compressor. However. because of its comparatively hapless Coefficient of Performance ( energy efficiency ) . this design is chiefly used for little dehumidifiers.

Makeshift dehumidifiers

Because they operate in the same basic manner as mechanical/refrigerative dehumidifiers. window air conditioner units are sometimes used as stopgap dehumidifiers by directing their heat fumes back into the room alternatively of outside the infinite. This can bring forth the same net consequence as utilizing a dehumidifier. a room ambiance that is much less humid but somewhat warmer.

This jury-rigged agreement may non be as energy efficient as a machine designed for the intent. since most window air conditioners are designed to dispose of condensate H2O by re-evaporating it into the exhaust air watercourse. even if the air conditioner is modified to let some of the condensed H2O to be drained off alternatively. In add-on. most air conditioners are controlled by a thermoregulator which senses temperature. instead than the humidistat typically used to command a dehumidifier. While temperature and humidness in a closed infinite are related. it is hard to command humidness by feeling merely the temperature. hypertext transfer protocol: //en. wikipedia. org/wiki/Dehumidifier | 12/04/12 1:25 Autopsy

An evaporative ice chest ( besides swamp ice chest. desert ice chest. and wet air ice chest ) is a device that cools air through the vaporization of H2O. Evaporative chilling differs from typical air conditioning systems which use vapor-compression or soaking up infrigidation rhythms. Evaporative chilling plants by using water’s largeenthalpy of vaporisation. The temperature of dry air can be dropped significantly through the stage passage of liquid H2O to H2O vapour ( vaporization ) . which can chill air utilizing much less energy than infrigidation.

In highly dry climes. evaporative chilling of air has the added benefit of conditioning the air with more wet for the comfort of edifice residents. Unlike closed-cycle infrigidation. evaporative chilling requires a H2O beginning. and must continually devour H2O to run. Air washers and wet chilling towers use the same rules as evaporative ice chests but are designed for intents other than straight chilling the air inside a edifice. For illustration. an evaporative ice chest may be designed to chill the spirals of a big air conditioning or infrigidation system to increase its efficiency.

Evaporative chilling is a physical phenomenon in which vaporization of a liquid. typically into environing air. cools an object or a liquid in contact with it. Latent heat. the sum of heat that is needed to vaporize the liquid. is drawn from the air. When sing H2O vaporizing into air. the wet-bulb temperature which takes both temperature and humidness into history. as compared to the existent air temperature ( dry-bulb temperature ) . is a step of the potency for evaporative chilling. The greater the difference between the two temperatures. the greater the evaporative chilling consequence. When the temperatures are the same. no net vaporization of H2O in air occurs. therefore there is no chilling consequence. The wet-bulb temperature is basically the lowest temperature which can be attained by evaporative chilling at a given temperature and humidness.

A simple illustration of natural evaporative chilling is sweat. or perspiration. secreted by the organic structure. vaporization of which cools the organic structure. The sum of heat transportation depends on the vaporization rate. nevertheless for each kg of H2O vaporized 2. 257 kJ of energy ( about 890 BTU per lb of pure H2O. at 95°F ) are transferred. The vaporization rate depends on the temperature and humidness of the air. which is why perspiration accumulates more on hot. humid yearss. as it does non vaporize fast plenty. Vapor-compression infrigidation uses evaporative chilling. but the evaporated vapour is within a certain system. and is so compressed ready to vaporize once more. utilizing energy to make so.

A simple evaporative cooler’s H2O is evaporated into the environment. and non recovered. In an interior infinite chilling unit. the evaporated H2O is introduced into the infinite along with the now-cooled air ; in an evaporative tower the evaporated H2O is carried off in the airflow fumes. Air washers and wet chilling towers use the same rules as evaporative ice chests but are designed for intents other than straight chilling the air inside a edifice. For illustration. an evaporative ice chest may be designed to chill the spirals of a big air conditioning or infrigidation system to increase its efficiency. hypertext transfer protocol: //en. wikipedia. org/wiki/Evaporative_cooler | 12/04/12 1:41 Autopsy

Cold H2O roughness of Cu tubing occurs in merely a minority of installings. Copper H2O tubings are normally guaranteed by the maker against fabrication defects for a period of 50 old ages. The huge bulk of Cu systems far exceed this clip period but a little minority may neglect after a relatively short clip. The bulk of failures seen are the consequence of hapless installing or operation of the H2O system. The most common failure seen in the last 20 old ages is opposing corrosion in cold H2O tubings. besides known as Type 1 roughness. These failures are normally the consequence of hapless commissioning pattern although a important figure are initiated by flux left in the dullard after assembly of soldered articulations. Prior to about 1970 the most common cause of Type 1 roughness was C movies left in the dullard by the fabrication procedure. Research and fabricating betterments in the 1960s virtually eliminated C as a cause of opposing with the debut of a clause in the 1971 edition of BS 2871 necessitating tubing dullards to be free of hurtful movies. Despite this. C is still on a regular basis blamed for tubing failures without proper probe.

Copper Water Tubes

Copper tubings have been used to administer drinkable H2O within constructing for many old ages and 100s of stat mis are installed throughout Europe every twelvemonth. The long life of Cu when exposed to natural Waterss is a consequence of its thermodynamic stableness. its high opposition to responding with the environment. and the formation of indissoluble corrosion merchandises that insulate the metal from the environment. The corrosion rate of Cu in most drinkable Waterss is less than 25 µm/year. at this rate a 15 millimeter tubing with a wall thickness of 0. 7 millimeter would last for about 280 old ages. [ 1 ]

In some soft Waterss the general corrosion rate may increase to 125 µm/year. but even at this rate it would take over 50 old ages to punch the same tubing. Despite the dependability of Cu and Cu metals. in some cold difficult Waterss cavities may organize in the dullard of a tubing. If these cavities signifier. failure times can be expected between 6 months and 2 old ages from induction. The mechanism that leads to the roughness of Cu in cold difficult Waterss is complex. it requires a H2O with a specific chemical science that is capable of back uping pit growing and a mechanism for the induction of the cavities.


The cavities that penetrate the dullard are normally covered in a difficult picket green nodule of Cu sulphate and Cu hydrated oxide salts. If the nodule is removed a hemispherical cavity is revealed filled with harsh crystals of ruddy cupric oxide and green cupric chloride. The cavities are frequently referred to as Type 1 cavities and the signifier of onslaught as Type 1 roughness.


The features capable of back uping Type 1 cavities were determined through empirical observation by Lucey after analyzing the composings of Waterss in which the opposing behavior was known. [ 2 ] They should be cold. less than 30°C. difficult or reasonably difficult. 170 to 300 mg/l carbonate hardness. and organically pure. Organically pure Waterss normally originate from deep Wellss. or boreholes. Surface Waterss from rivers or lakes contain of course happening organic compounds that inhibit the formation of Type 1 cavities. unless a deflocculation intervention has been carried out that removes organic stuff.

Type 1 roughness is comparatively uncommon in North America and this may be a consequence of the lower population denseness leting a important proportion of the drinkable H2O to be obtained from surface derived beginnings. In add-on to being cold hard and organically pure. the H2O needs a specific chemical science. The consequence of the H2O chemical science can be through empirical observation determined though usage of the Pitting Propensity Rating ( PPR ) a figure that takes into history the sulphate. chloride. nitrate and Na ion concentrations of the H2O every bit good as its sourness or pH. A H2O with a positive PPR has been shown to be capable of propagating Type 1 cavities.


Many Waterss in both the UK and Europe are capable of back uping Type 1 opposing but no jobs will be experienced unless a cavity is initiated in the wall of the tubing. When a Cu tubing is ab initio filled with a difficult H2O salts sedimentation on the wall and the Cu easy reacts with the H2O bring forthing a thin protective bed of assorted corrosion merchandises and hardness graduated table. If any roughness of the tubing is to happen so this movie must be locally disrupted. There are three mechanisms that allow the break of the protective sedimentations. The most good known. although now the least common. is the presence of C movies on the dullard. Stagnation and flux residues are the most common induction mechanisms that have led to Type 1 opposing failures in the last 10 old ages.

Carbon movies

Copper tubings are made from the big notes of Cu that are bit by bit worked and drawn down to the needed size. As the tubings are drawn they are heat treated to bring forth the right mechanical belongingss. The organic oils and lubricating oils used to lubricate the tubings during the drawing procedures are broken down during the heat intervention and bit by bit surface the tubing with a movie of C. If the C is left in the dullard of the tubing so it disrupts the formation of the protective graduated table and allows the induction of cavities in the wall. The presence of hurtful movies. such as C. has been prohibited by the British Standards in Cu tubings since 1969. [ 3 ] [ 4 ] All Cu tubings for H2O service are treated. normally by grit blasting or acid pickling. to take any movies produced during industry with the consequence that Type 1 roughness initiated by C movies is now really rare.


If H2O is left to stand in a tubing for an drawn-out period. the chemical features of the H2O alteration as the assorted graduated table and corrosion merchandises are deposited. In add-on any loose graduated table that is non good adhered to the wall will non be flushed off and air dissolved in the H2O will organize bubbles. bring forthing air pockets. These procedures can take to a figure of jobs chiefly on horizontal tubing tallies. Atoms of graduated table that do non adhere to the walls and are non washed off tend to fall into the underside of the tubing bring forthing a harsh porous sedimentation. Air pockets that develop in horizontal tallies disrupt the formation of protective graduated tables in two countries.

The H2O lines at the sides and the air infinite at the top of the tubing. In each of the countries that the graduated table has been disrupted there is the possibility of the induction of Type 1 roughness. Once opposing has initiated. so even after the tubing has been put back into service. the cavity will go on to develop until the wall has perforated. This signifier of onslaught is frequently associated with the commissioning of a system. Once a system has been commissioned it should be either set instantly into service or drained down and dried by blushing with tight air otherwise opposing may originate. If either of these options is non possible so the system should be flushed though on a regular basis until it is put into usage.


In plumbing systems fluxes are used to maintain the coupling surfaces clean during soldering operations. The fluxes frequently consist of caustic chemicals such as ammonium chloride and Zn chloride in a binder such as crude oil jelly. If excessively much flux is applied to the joint so the surplus will run and run down the dullard of a perpendicular tubing or pool in the underside of a horizontal tubing. Where the dullard of the tubing is covered in a bed of flux it may be locally protected from corrosion but at the borders of the flux cavities frequently initiate. If the tubing is put into service in a H2O that supports Type 1 opposing so these cavities will develop and finally punch the sides of the tubing. hypertext transfer protocol: //en. wikipedia. org/wiki/Cold_water_pitting_of_copper_tube | 12/04/12 1:50 Autopsy

Why are Cu tubings used in air conditioning units?

Modern engineering has drawn on the alone combination of belongingss of Cu and Cu metals in the signifier of tubing and pipe merchandises. Copper tubing is used extensively to convey drinkable H2O in edifices and places. Copper metals are selected to convey many diverse fluids for the oil. chemical. procedure and Marine industries. Copper tube’s second largest application is in air-conditioning and infrigidation systems ; its fastest-growing usage in is fire sprinkler systems and fuel gas distribution systems in residential and office edifices. Copper is used for plumbing tubing chiefly because of its corrosion opposition. machinability and high degree of heat transportation.

Chief tubing applications for Cu in the transit industry are for automotive and truck radiators. air-conditioning systems and hydraulic lines like Cu tubings for air conditioning and infrigidation Cu tubing. In marine service. Cu and Cu metal tubing and pipe are used to transport drinkable H2O. saltwater and other fluids. but the main application is alloy tubing packages for capacitors and subsidiary heat money changers. The nutrient and drink industries besides use Cu to transport process fluids for beer. liquors. cane sugar refinement and other nutrient processing operations.

Benefits of Copper Tubes

In big diameters or little. for liquid or gas. for high- or low-pressure systems under a broad scope of temperatures. you can depend on Cu and cut down costs for any mechanical system. Key benefits offered by Cu tubing include:

* Versatility
* Variety of applications
* Wide scope of sizes
* Problem-free public presentation
* Long lasting and care free
* Corrosion opposition
* High thermic conduction
* Easy to fall in and put in
* An abundant resource

Furthermore. Cu is lasting plenty to implant in concrete without concern. We can fabricate tubings in form of square. rectangular or any other form harmonizing to client demand.

Assortment of Applications

In mechanical systems of all sorts. Cu does more than of all time before. Today Cu tubing has proven superior for: Cardinal benefits offered by Cu tubing include:
* Water distribution systems
* Chilled H2O brinies
* Drainage and vent systems
* Heating systems ( including solar )
* Fuel-oil systems
* Oxygen systems
* Non-flammable medical-gas systems


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