Refrigerators (Voluntary Scheme)

Refrigerator is one of the popular household electrical appliances nowadays. Almost all families have at least one refrigerator. The refrigerator has the longest operating hour among other electrical appliances because they have to be switched on continuously to keep food frozen and fresh.

Vapour compression refrigeration cycle is commonly used in domestic refrigerators. Refrigerators usually employ forced convective-cooling combined with active defrosting by heating the evaporator (known as “no frost”).

There are continuous improvements on refrigerator’stechnology. New developments of refrigerators include vacuum insulation panels around freezer sections; the addition of polyurethane foam to doors; replacing automatic defrost systems control with adaptive defrosters that operate only when needed; increasing the evaporator and condenser heat-exchange area.

The registered refrigerators will bear a “Grading Type” energy label under the VEELS. The registered refrigerators are classified into 5 grades, Grade 1 being the most energy-efficient and Grade 5 the least energy-efficient.

Room coolers (Voluntary Scheme)

Room coolers are popular in residential buildings in Hong Kong because they provide comfort during the hot and humid weather conditions.

Room coolers employ the same operating principles as the home refrigerator. A room cooler cools indoor space by the evaporation and condensation of refrigerant, and bringing the heat from the indoor air to outdoor air.

The investment of room coolers involves both initial cost and cost of electricity during its lifetime operation. The investment cost can be cut down by choosing energy efficient room cooler models with the help of the Energy Efficiency Labelling Scheme.

The registered room coolers will bear a “Grading Type” energy label under the VEELS. The grading system of room coolers are classified into 5 grades, Grade 1 being the most energy-efficient and Grade 5 the least energy-efficient.

Non-integrated Type Compact Fluorescent Lamp (CFL)

The compact fluorescent lamps are becoming increasingly popular as highly efficient and long life expectancy alternatives to standard incandescent bulbs. They consume about 80% less electrical power than incandescent lamp while producing comparable lighting output. In addition, the life expectancy of CFL can up to16 times that of incandescent lamp. Please click here for more energy related features of CFL.

The registered non-integrated type CFL will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme.

Electronic Ballast

The ballast takes advantage of a characteristic of fluorescent lamp whereby greater luminous efficacy is obtained at high operating frequency above 20kHz. Luminous efficacy due to high frequency operation is increased by about 10% thereby enabling the lamp to be operated at a lower input power than at 50Hz mains power frequency. Ballast losses are reduced compared to conventional ballast, as the solid state circuit contains no copper windings. The overall achievement in a suitable luminaire is an energy reduction in the region of 20-33% due to the improved light output at high frequency operation and the reduced power losses in conventional electromagnetic ballast.

The registered electronic ballast will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme.

Washing Machines (Voluntary Scheme)

Washing machines wash clothes using a mixture of heated water, detergent action and mechanical action. If a washing machine possesses water heating function, the process of water heating takes the largest portion of its total energy consumption.

The technology of washing machines is mature, but further improvement are being made in reducing the temperature and quantity of water needed, reducing the size of the structure, optimizing the power of the motor, applying electronic controls and optimizing the agitation phase in the washing cycle.

The registered washing machines will bear a “Grading Type” energy label under the VEELS. The grading system of washing machines are classified into 5 grades, Grade 1 being the most energy-efficient and Grade 5 the least energy-efficient.

Electric Clothes Dryers

Electric clothes dryers work by heating and aerating clothes. They can be powered by either electricity or natural gas.

Usually, a electric clothes dryer has moisture sensors in the drum. Most machines simply detect dryness by sensing the temperature of the exhaust air. There are two main types of electric clothes dryer, namely thermostat-controlled type and timed-dryers type. The thermostat-controlled type dryers may over-dry clothes. Timed-dryers consume more energy. Improvements on electric clothes dryers are on-going although it is a mature technology. Developments include reducing the temperature of drying, optimizing the heating element, reducing the thermal mass of the appliance, optimizing ventilator and air-flow design, reducing waste air, applying electronic controls and installing heat pumps.

The registered electric clothes dryers will bear a “Grading Type” energy label under the VEELS. The grading system of electric clothes dryers are classified into 5 grades, Grade 1 being the most energy-efficient and Grade 5 the least energy-efficient.

Rice-Cookers

Rice-cookers are popular cooking device in Hong Kong and in the Asian region. The majority of cooking energy is used to heat food, and small amounts are used for the control devices.

The registered rice cooker will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme.

Household Electric Storage Water Heaters

Storage type water heaters heat and store water in a tank so that hot water is available to the user at any time. Hot water is drawn from the top of the tank, while cold water enters the bottom of the tank and is heated. An energy efficient storage type water heater will typically have one or more of the following features:  

  • enhanced tank insulation for reducing heat loss;
     
  • a better heat exchanger to transfer more heat from the energy source to the water; and
     
  • factory-installed heat traps, which allow water to flow into the tank but prevent unwanted flow of hot water out of the tank.
     
  • A number of more efficient technologies on the storage water heater are developing now. Option with simple technology includes improving the insulation of the water tank. At the more advanced technological scale, heat pump water heaters have considerable potential to reduce electricity demand for water heaters.

    The registered hosuehold electric storage water heaters will bear a “Grading Type” energy label under the VEELS. The household electric storage water heaters are classified into 5 grades, Grade 1 being the most energy-efficient and Grade 5 the least energy-efficient.

 

Dehumidifiers (Voluntary Scheme)

Dehumidifiers remove excess moisture from the air in your home. They work on the same principles as room coolers, using refrigerated coils to condense moisture. Then, unlike room coolers, the dehumidifiers return the heat back to the air through a separate heating condenser coil. As a result, no heat is removed by the dehumidifier but only moisture.

The registered dehumidifier will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme, however it does not provide information about the energy efficiency grades.

Televisions

There are three common television technologies, namely cathode-ray tube (CRT) screens, liquid crystal display (LCD) screens and plasma. Among these three technologies, LCD screens use much less energy.

The registered televisions will bear a “Grading Type” energy label under the VEELS. The grading system of room televisions is the same as refrigerator classified into 5 grades, Grade 1 being the most energy-efficient and Grade 5 the least energy-efficient.

LED (Light Emitting Diode) Lamp

With the advancement of technology in Light Emitting Diodes (LED) lamps, the energy efficient LED lamps have become a wise choice in lighting applications with its long lamp life, low power consumption and environmental friendly characteristics.

The registered LED lamp will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme, however it does not provide information about the energy efficiency grades.

Microwave Ovens

A microwave oven heats and cooks food by exposing it to electromagnetic radiation in the microwave spectrum. This induces polar molecules in the food to rotate and produce thermal energy and excitates evenly to heat and cook foods quickly and efficiently.

The registered microwave oven will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme, however it does not provide information about the energy efficiency grades.

Induction Cookers

An induction cooker heats a cooking vessel by magnetic induction, instead of by thermal conduction from a flame, or an electrical heating element. Induction cooking is quite efficient because inductive heating directly heats the pot, very rapid increases in temperature can be achieved.

The registered induction cooker will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme, however it does not provide information about the energy efficiency grades.

Domestic Gas Instantaneous Water Heaters

Domestic gas instantaneous water heaters heat water directly without the use of a storage tank. Therefore, the standby energy losses from the storage tank are eliminated by using this type of heater. However, the maximum water flow rate of the heater is limited by the size of the gas burner. This means it may not be able to provide two or more demand simultaneously.

The registered Domestic gas instantaneous water heaters will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme, however it does not provide information about the energy efficiency grades.

Gas Cookers

A gas cooker uses natural gas, propane, butane, liquefied petroleum gas or other flammable gas as a fuel source. It is easily adjustable and could be turned off when not in use.

The registered gas cooker will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme, however it does not provide information about the energy efficiency grades.

Multifunction Devices

Multifunction device (MFD) is an office equipment which combines the functions of a photocopier, fax machine and printer. The advantages of MFD include systems integration, ease of use, office space savings and often significant lower capital costs compared with buying several equipment items individually. Choosing MFD over individual pieces of equipment can also create significant savings in energy, materials and environmental impacts.

Two factors to consider when choosing a MFD are as follows:

  • ENERGY LABEL issued by Electrical and Mechanical Services Department (EMSD) is a good tool for selecting energy efficient MFDs. A device with ENERGY LABEL is a good choice. Those with ENERGY LABEL can reduce the annual electricity at inactive stage by about 50%; and
     
  • It is recommended to choose a MFD having low power mode and sleep mode.
The registered MFDs will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme, however it does not provide information about the energy efficiency grades.

 

Photocopiers

Photocopier is an essential equipment in modern offices. When purchasing a photocopier, it is suggested to follow the general principles below for selecting an energy efficient model:

  • It is recommended to select a photocopier with "energy save" and programmable power management features so that users can put the machine into low power mode after use;
     
  • It is recommended to choose a photocopier with a programmable timer that allows you to programme it to turn off when it is not needed at the end of each work day and over the weekends;
     
  • ENERGY LABEL issued by Electrical and Mechanical Services Department (EMSD) is a good tool for selecting energy efficient photocopiers. A device with ENERGY LABEL is a good choice. Those with ENERGY LABEL can reduce the annual electricity at inactive stage by about 50%; and
     
  • It is recommended that to choose a photocopier having low power mode and off mode.
     
  • The registered photocopier will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme, however it does not provide information about the energy efficiency grades.

 

Printers

Printer is a common type of computer printer that produces high print quality. The speed and lower operation cost make printers attractive to many businesses. In order to choose an energy efficient printer, it is suggested to follow the general principles below for selecting an energy efficient model:

  • ENERGY LABEL issued by Electrical and Mechanical Services Department (EMSD) is a good tool for selecting energy efficient printers. A device with ENERGY LABEL is a good choice. Those with ENERGY LABEL can reduce the annual electricity at inactive stage by about 50%; and
     
  • It is recommended to choose a laser printer having standby mode and sleep mode.
     
  • The registered laser printers will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme, however it does not provide information about the energy efficiency grades.

 

Fax Machines

Fax machine is one of the necessary equipment units in modern office. It offers rapid and convenient way to send information to another fax machine via communication line, as well as receiving information from another fax machine and producing hardcopy output.

Printer/fax combination is also covered by this Scheme under the same category as fax machine. Printer/fax combination can serves both as a fully-functional printer and a fax machine. This type of device does not have a scanning table. (Those with a scanning table are likely to be classified as "multifunction device" under the EELS.)

When purchasing this kind of machine, it is suggested to choose machine with sleep mode. It is also recommended to select a machine with ENERGY LABEL issued by EMSD.

The registered fax machine will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme, however it does not provide information about the energy efficiency grades.

Computers and LCD Monitors

The use of computer is very common in modern offices. Desktop computers generally draw about 40 to 50W when in use. Monitors usually use 50 to 100W. When purchasing a computer and/or LCD monitor, it is suggested to follow the general principles below for selecting an energy efficient model:

  • In general, a laptop is much more energy and material-efficient than a desktop computer and monitor. Therefore, it is suggested to consider buying a laptop;
     
  • Consider buying LCD monitor as they are more energy and space-efficient than Cathode-ray Tube (CRT) monitor; and
     
  • It is recommended that to choose a LCD monitor with low power/sleep mode and standby/off mode.
     
  • The registered computer and LCD monitor will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme, however it does not provide information about the energy efficiency grades.

 

Hot/Cold Bottled Water Dispensers

Hot/cold bottled water dispenser is one of the common equipment in modern office. Standard size bottled Water normally is delivered to the office on a regular basis, where empty bottles are exchanged for full ones. User does not have to wait for hot/chilled water. Water is delivered by pressing a button on a spring-loaded valve located on the top of the unit, that turns off the water when released.

The registered hot/cold bottled water dispenser will bear a "Recognition Type" energy label under the VEELS. The energy label recognizes the product has met the minimum energy efficiency and performance requirements of the Scheme, however it does not provide information about the energy efficiency grades.

   
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