Clothes Dryers



Recognitionof the problem

Clothes dryers remain one of the most significant residentialappliances that require an efficiency in energy consumption upgrade.They have received considerable attention when it comes to the needto conduct a complete makeover as pertains to the need for ensuringthat they become efficient when it comes to the consumption ofenergy. The need to identify ways in which the upgrade needs to bedone arises from various reasons. Typical households spend close toone hundred dollars on an annual basis on utility bills whenoperating the electric dryer. If all of the electric dryers were tobe updated to become the most efficient models, people would have thebenefit of saving a lot of money because of the less energyconsumption requirements (Attari, DeKay, Davidson &amp De Bruin,2010). There are weak policies for the clothes dryers making themanufacturers come up with appliances that are poor at the use ofenergy. The high energy consumption rate of the dryers means thatpeople who are using them continue to spend much to cater for theelectricity bills. There is need to focus on ways of coming up with asystem that is efficient enough to help in saving the users the highcost by consuming less energy (Dubin &amp McFadden, 1984). Focusshould be on the need to ensure that there is an effective waythrough which the dryer can be tested to determine its energy use.There is also need to design dryers that are efficient for theconsumers so that they do not have to spend a lot in catering for theelectricity costs. Emphasis should further be made on coming up witha dryer that is most efficient in not only energy use but efficiency.

Selection of the response variable

The effectiveness of the clothes dryers is dependent upon variousfactors. Out of the same factors, one would be able to identify theresponse variables based on the dependent and the independentvariables. The response variable can be termed as the time that itwould take for the clothes to dry with the manipulation of otherfactors such as the energy that is in use. There are various types ofdryers. The heat pump dryers, for instance, tend to utilize lessenergy, but clothes take a longer time to dry. However, when one isusing the gas dryer, there is a chance of a better balance of energyconsumption and the time that it would take for the clothes to drywould also have been reduced. As for the electric dryers, they havebeen determined to use more energy but with a less time involved inthe drying of the clothes (Wood &amp Newborough, 2003). In lookingat all of the factors, it is evident that energy applied could beseen as the dependent variable whereas the time that the clothes getto dry can be determined as the response variable. It is because whenthe clothing dryer is in operation, the emphasis is put on how muchenergy is used but the response is the time that the clothes get todry and at what efficiency rate. The various types of clothes dryersavailable utilize different amounts of energy. The amount of energyused by each of the dryers would dictate the time that the clotheswould eventually dry (Donnelly et al., 2010). The same negates theneed to identify time as the response variable.

Choice of factor, levels and ranges

In choosing the factors, levels, and the ranges, there is a need tounderstand what role they play when it comes to the experiment. Onewould consider both the potential design factors and the nuisancefactors. When working with the clothes dryers, there is a need tohave an understanding as to what could be the possible design factorsand the nuisance factors. However, to identify such factors in aclothes dryer, it would be prudent to have a definition of thefactors. The potential design factors in the clothes dryer are thosethat the experimenter can modify while conducting the experiment. Thenuisance factors could be defined as those that need to be accountedfor in the course of the experiment. For the potential designfactors, some of the variables that could be in existence aretemperature, the clothing dryness and the humidity that is used whilethe clothes dryer is in operation. However, for the nuisance factors,one may need to consider the type of the clothes dryer. Notably, onecould look at the various types such as the heat pump dryer, the gasdryer, and the electric clothes dryer. The nuisance factors must beconsidered when conducting the experiment since each has an effect onthe amount of energy that each consumes and the clothes dryness((Seltman, 2012).

Experimental design

The decision to perform the experiment aims at identifying the mostefficient clothes dryer taking into consideration factors such astemperature, humidity, clothes dryness and the response variable. Forpurposes of this discussion, the clothes dryers can be grouped intotwo, clothes dryer A and B. Each of the dryer would have a particularpotential design where the factors can be manipulated. The nuisancefactor is the different types of the dryers A and B. Temperature,humidity and clothes dryness would be different for each of thedryers, and each would be monitored for how long the clothes takewhen the factors are modified (Tso &amp Yau, 2007). The same canthen be used to determine the level of efficiency since it would bepossible to measure the changes and the time it would take for theclothes to get dry. However, there is need to take into considerationthe material that would be used. For the experiment, cotton willbe used as the material for the clothing.

Overall trends in the sector

Research into the various types of dryers has been going on for sometime with the aim of determining the most efficient dryers that havethe capability of utilizing less energy but with a short period ofclothes dryness. Emphasis on the studies has been on the reasonsbehind the high energy consumption rates by the dryers(Aydinalp-Koksal &amp Ugursal, 2008). According to researchers,certain attributes could be linked to the high energy consumption ofthe dryers. The first regards the type of technology that is beingused in the manufacture of the dryers. Researchers point out thatmost of the manufacturers have been using old technological meanswhen they are designing the clothes dryers. According to studies, thedryers tend to utilize a lot of energy because of the nature ofconception. Notably, some of them bake water out of the clothes withmuch force meaning that they would utilize a lot of energy. Theyinefficient when it comes to how they heat the air that is inside thedryer.

Further, it has been identified that the government has failed totake a tough stance when it comes to ensuring that the manufacturersadhere to the highest standards of production when designing thedryers. The failure by the federal government to put the highestlevels of production means that there would be a continuation ofmanufacture of clothes dryers that are not efficient enough when itcomes to operation (Kudra, 2004). The same lives the consumers at theexpense of spending more on the utility bills since the energy costsare equally high.

Also, studies have shown that the consumers may not be havingknowledge as to the type of the clothes dryer that is the mostefficient when it comes to operations (Lanciaux, 1986). According tostatistics, many consumers have a preference for electric clothesdryers compared to the gas dryers. It is evident that the gas dryersare quite efficient when it comes to the balancing of the amount ofenergy that it uses and the time it takes for the clothes to dry. Asfor the clothes dryer, they tend to use a lot of energy making themcostly. Unfortunately, most of the consumers still prefer to use theelectric dryers for lack of information (Abrahamse, Steg, Vlek &ampRothengatter, 2007). In light of the same, those who use the electricdryers tend not to adhere to the proper means of operation. Forexample, as for the electric dryers, it can be possible to manipulatethe temperature, clothes dryness, and humidity to come up with asystem that takes a shorter time to dry while utilizing a less amountof energy.


Overall, the type of dryer that one uses has a significant impactwhen it comes to the concept of consumption of energy. Consumers needto be on the watch out in the type of clothes dryer they use to savethem the cost of energy they use during operation. The manufacturers,however, need to come up with more efficient dryers to deal with theconcerns presented.


Abrahamse, W., Steg,L., Vlek, C., &amp Rothengatter, T. (2007). The effect of tailoredinformation,

goal setting, andtailored feedback on household energy use, energy-related behaviors,

and behavioral antecedents. Journal of Environmental Psychology,27(4), 265-276.

Aydinalp-Koksal, M.,&amp Ugursal, V. I. (2008). Comparison of neural network,conditional

demand analysis,and engineering approaches for modeling end-use energy consumption

in the residentialsector. Applied Energy, 85(4), 271-296.

Attari, S. Z.,DeKay, M. L., Davidson, C. I., &amp De Bruin, W. B. (2010). Publicperceptions of

energy consumptionand savings. Proceedings of the National Academy of Sciences,


Donnelly, M. K.,Chassin, D. P., Dagle, J. E., Kintner-Meyer, M., Winiarski, D. W.,Pratt, R. G.,

&ampBoberly-Bartis, A. M. (2006). U.S. Patent No. 7,010,363.Washington, DC: U.S.

Patent andTrademark Office.

Dubin, J. A., &ampMcFadden, D. L. (1984). An econometric analysis of residentialelectric

appliance holdingsand consumption. Econometrica: Journal of the Econometric Society,


Kudra, T. (2004).Energy aspects in drying. Drying Technology, 22(5),917-932.

Lanciaux, F. (1986).U.S. Patent No. 4,621,438. Washington, DC: U.S. Patent andTrademark


Seltman, H. J.(2012). Experimental design and analysis. Online at: http://www.stat. cmu. edu/,


Tso, G. K., &ampYau, K. K. (2007). Predicting electricity energy consumption: Acomparison of

regressionanalysis, decision tree and neural networks. Energy, 32(9),1761-1768.

Wood, G., &ampNewborough, M. (2003). Dynamic energy-consumption indicators fordomestic

appliances: environment, behaviour and design. Energy andBuildings, 35(8), 821-841.

Close Menu