Energy Efficient Rating

8/10/2019 Energy Efficient Rating

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Group 14

Arthur Lu Wei Cheng 111515

Lee Jin Liang 113605

Mohd Safie Abdullah 111546

Muhammad Nazreen Bin Mohd Noor 111562

Roger Ho Zhen Yu 111577


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EER based on test s do ne in acc ord ance to MS ISO 5151:2004

Tests can be either the Balanced Type Calorim eter or

Psychometr ic ty pe.

Tested capacity value must b e at least 90% o f that declared

by the manufacturer.


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EER is calcu lated as show n below :

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For non-inverter air condi t ion er

= .

%

%

+ . %

%

For inverter ai r con di t ioner


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Eff ic iency of air cond it ioners rated by the SEER.

The SEER rat ing of a unit is the coo l ing ou tpu t dur ing a

typ ical cool ing -season div ided by th e total electr ic energy

inpu t dur ing the same per iod.

The higher th e unit 's SEER rat ing the more energy eff ic ient

In th e U.S., the SEER is the rat io of c oo l ing in Bri t ish thermal

un it (BTU) to the energy c ons umed in watt-hou rs.


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The coeff ic ient of p erformance or COP is a rat io of heat ing or

coo l ing p rovided to electr ica l energy c onsumed.

Higher COPs equate to low er operat ing cos ts.

COP is high ly dependent on operat ing co ndit io ns, especial ly

absolu te temperature and relat ive temperature between sin k

and sy stem , and is o ften graphed or averaged against

expected con dit ion s.


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Energy eff ic iency is def ined as the energy s ervice per un it of

energy con sumpt ion.

For example, an air conditions efficiency is the amount of

coo l ing capaci ty(outp ut) per un it of energy i t consumes(input).

Standard s tar rat ing s ys tem has a m in imum of 1 star and a

maximum of 6.


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Calculate the power consumption o f 5000 Btu /h room aircondit ion er with an Energy Eff ic iency Ratio (EER) of 8. Then,co nvert EER to COP.

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Power consumption is 625W.


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An old ro om air co ndi t ioner wi th an EER 6 was replaced by anew air cond it ioner with an EER of 10. The powerconsumption of the old air condit io ner was 1000 W. Calculatethe power consum pt ion of new air condi t ioner.

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Outpu t coo l ing power is 6000 Btu/h.


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The size of room is no t chang ing, so even the air condit ioner

is replaced w ith a new one with EER of 10, i t is st i l l pul l ing o ut

6000 B tu /hr.

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Power consumption o f new air con is 600 Watts.

What we are doin g here is, by replacing th e old air cond it ioner

wh ich us ed to con sum e 1000 watts w i th th is new air

condit ion er which has an EER of 10, we are reducin g the

power consum pt ion to 600 watts.


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This Malaysian Standard was developed by the Working Group

on Minimum Energy Performance Standards (MEPS) for Air

Cond it ioners under the author i ty of the Industry Standards

Comm ittee on Electr ical and Electron ics Equipments and

Accessor ies.

MEPS for electr ical appl iances have been introduced to

Malays ian market sin ce 2009. Since then, development has been

carr ied out b y Suruhanjaya Tenaga to put MEPS requirement in

the Electr ic i ty Regu lation 1994.


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This Malaysian Standard specif ies m inimum energy performance

standard (MEPS) and energy label l ing requirements for s ingle-

phase non-ducted sing le spl i t wall mounted type vapour

com pression air condi t ioners w i th coo l ing capaci ty up to 7.1 kW.


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Energy Eff iciency Ratio (EER) Ratio of the total cooling capacity to the effective

power input at any given set of rating conditions. Theunit is (Btu/h)/W.

Minimum Energy Performance Standards(MEPS) The minimum level of energy efficiency which has to be

met by each of applicable air conditioners.

Star rat ing The number of stars displayed on the energy label.Available stars are between a minimum of one and amaximum of five.


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Inverter air c ondi t ioners

Air conditioners employ technologies that vary theoutput of the compressor, by means other than start-stop operation.

Non inverter air condi t ioners

Air conditioners employ technologies that control theoutput of the compressor by start-stop operation.


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Table 2:4.5 kW rated cooling capacity 7.1 kW

Star rating Tested EER (Btu/h)

/ W

5 10.71

4 9.83 to 10.703 8.94 to 9.82

2 8.03 to 8.93

1 7.50 to 8.02


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Description:

- LG 115V 8,000 BTU cooling

capacity with variable speedfan.

- Product Dimensions:

23.3x22.6x15.4 inches.

- Cools room sizes up to 350 sq.

ft.

- 4-way air direction control

Existing Product


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- Frigidaire 115V 8,000 BTU

cooling capacity with variable

speed fan.- Product

Dimensions:19.6x19.4x12.4

inches.

- Cools room sizes up to 350 sq.

ft.

- 8-way air direction control.

Description:


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LG Energy Star 8,000-BTU 115V Window-Mounted AirConditioner

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11.8=(8(/)

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Power consumption is 677.97W.

Power consumption calculation


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Frigidaire FRA083AT7 8,000 BTU 115-Volt Window-Mounted

Mini-Compact Air Conditioner

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10.8=(8(/)

()

Power consumption is 740.74W.


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Electricity consumption (kWh) = 677.97W x 10 hours /1000 = 6.8 kWh

For 1 month:

Electricity consumption (kWh) = 6.8 kWh * 30 days =204 kWh

Charge for first 200 kWh = 200 * RM 0.218 = RM 43.60

Charge for remaining 4 kWh= 4 * RM 0.334 = RM 1.336

Charge for 1 month = RM 43.60 + RM 1.336 = RM 45

LG Energy Star 8,000-BTU 115V Window-Mounted Air Conditioner


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Electricity consumption (kWh) = 740.74W x 10 hours /1000 = 7.4 kWh

For 1 month:

Electricity consumption (kWh) = 7.4 kWh * 30 days =222 kWh

Charge for first 200 kWh = 200 * RM 0.218 = RM 43.60

Charge for remaining 22 kWh= 22 * RM 0.334 = RM7.348

Charge for 1 month = RM 43.60 + RM 7.348 = RM 51

Frigidaire FRA083AT7 8,000 BTU 115-Volt Window-MountedMini-Compact Air Conditioner


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BTUs: The cooling capacity of an air conditioner is measured inBritish thermal units per hour (Btu/hr). Find the best BTUsneeded to cool the room.

Energy Star rating: The Environmental Protection Agency'sEnergy Star ratings indicate that an appliance is at least 10percent more energy-efficient than the minimum federalstandards.

EER: A room air conditioner's EER, or Energy-Efficiency Ratio, isthe ratio of the cooling output divided by the unit's power

consumption. The higher the EER, the more efficient the model. Anti-Microbial filter? Most room air conditioners come with

reusable electrostatic filters, which may be treated with triclosan.If purchasing a unit with an antimicrobial filter, ask the retailerto replace it with an untreated electrostatic filter.


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Energy Efficient Rating

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